public static void Run(Options options)
{
//load the image and compute the ratio of the old height
//to the new height, clone it, and resize it
using (var disposer = new Disposer())
{
var image = new Image <Bgr, byte>(options.Image);
disposer.Add(image);
Image <Bgr, byte> orig = image.Clone();
disposer.Add(orig);
double ratio = image.Height / 500.0;
image = ImageUtil.Resize(image, height: 500);
disposer.Add(image);
Image <Gray, byte> gray = image.Convert <Gray, byte>();
disposer.Add(gray);
gray = gray.SmoothGaussian(5);
disposer.Add(gray);
Image <Gray, byte> edged = gray.Canny(75, 200);
disposer.Add(edged);
Console.WriteLine("STEP 1: Edge Detection");
CvInvoke.Imshow("Image", image);
CvInvoke.Imshow("Edged", edged);
CvInvoke.WaitKey();
CvInvoke.DestroyAllWindows();
//find the contours in the edged image, keeping only the
//largest ones, and initialize the screen contour
VectorOfVectorOfPoint cnts = new VectorOfVectorOfPoint();
disposer.Add(cnts);
using (Image <Gray, byte> edgedClone = edged.Clone())
{
CvInvoke.FindContours(edgedClone, cnts, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
}
Point[] screenCnt = null;
foreach (VectorOfPoint c in
Enumerable.Range(0, cnts.Size).Select(i => cnts[i]).OrderByDescending(c => CvInvoke.ContourArea(c)).Take(5))
{
//approximate the contour
double peri = CvInvoke.ArcLength(c, true);
using (VectorOfPoint approx = new VectorOfPoint())
{
CvInvoke.ApproxPolyDP(c, approx, 0.02 * peri, true);
if (approx.Size == 4)
{
screenCnt = approx.ToArray();
break;
}
}
}
if (screenCnt == null)
{
Console.WriteLine("Failed to find polygon with four points");
return;
}
//show the contour (outline) of the piece of paper
Console.WriteLine("STEP 2: Find contours of paper");
image.Draw(screenCnt, new Bgr(0, 255, 0), 2);
CvInvoke.Imshow("Outline", image);
CvInvoke.WaitKey();
CvInvoke.DestroyAllWindows();
//apply the four point transform to obtain a top-down
//view of the original image
Image <Bgr, byte> warped = FourPointTransform(orig, screenCnt.Select(pt => new PointF((int)(pt.X * ratio), (int)(pt.Y * ratio))));
disposer.Add(warped);
//convert the warped image to grayscale, then threshold it
//to give it that 'black and white' paper effect
Image <Gray, byte> warpedGray = warped.Convert <Gray, byte>();
disposer.Add(warpedGray);
warpedGray = warpedGray.ThresholdAdaptive(new Gray(251), AdaptiveThresholdType.GaussianC, ThresholdType.Binary, 251, new Gray(10));
disposer.Add(warpedGray);
Console.WriteLine("STEP 3: Apply perspective transform");
Image <Bgr, byte> origResized = ImageUtil.Resize(orig, height: 650);
disposer.Add(origResized);
CvInvoke.Imshow("Original", origResized);
Image <Gray, byte> warpedResized = ImageUtil.Resize(warpedGray, height: 650);
disposer.Add(warpedResized);
CvInvoke.Imshow("Scanned", warpedResized);
CvInvoke.WaitKey();
CvInvoke.DestroyAllWindows();
}
}
public Form1()
{
InitializeComponent();
//Mat picture = new Mat(@"C:\Users\flore\Desktop\OK.png", Emgu.CV.CvEnum.LoadImageType.AnyColor); // Pick some path on your disk!
//CvInvoke.Imshow("Hello World!", picture); // Open window with image
Capture capture = new Capture(); //create a camera captue
// var inImage = new Image<Bgr, byte>(@"PhotosCube\cube3.jpg");
var processViewer = new ImageBox(); //create an image viewer
this.pnl.Controls.Add(processViewer);
processViewer.Dock = DockStyle.Top;
processViewer.Height = capture.Height;
var cannyViewer = new ImageBox(); //create an image viewer
this.pnl.Controls.Add(cannyViewer);
cannyViewer.Dock = DockStyle.Top;
cannyViewer.Height = capture.Height;
var contourViewer = new ImageBox(); //create an image viewer
this.pnl.Controls.Add(contourViewer);
contourViewer.Dock = DockStyle.Top;
contourViewer.Height = capture.Height;
var viewer = new ImageBox(); //create an image viewer
this.pnl.Controls.Add(viewer);
viewer.Dock = DockStyle.Top;
viewer.Height = capture.Height;
Vector2 vect1;
Vector2 vect2;
for (int i = 0; i < Colors.Count - 1; i++)
{
for (int j = i + 1; j < Colors.Count; j++)
{
var dist = (Colors.Values.ElementAt(i) - Colors.Values.ElementAt(j)).LengthFast;
if (dist < MaxColorDistance)
{
MaxColorDistance = dist;
vect1 = Colors.Values.ElementAt(i);
vect2 = Colors.Values.ElementAt(j);
}
}
}
Application.Idle += new EventHandler(delegate(object sender, EventArgs e)
{
//run this until application closed (close button click on image viewer)
var frame = capture.QueryFrame();
var inImage = frame.ToImage <Bgr, byte>(); //draw the image obtained from camera
var contourImage = inImage.Clone();
// Mat outImage = new Mat();
//CvInvoke.MedianBlur(frame, outImage, 5);
var processsImageChannels = new Image <Bgr, byte>(inImage.Size);
CvInvoke.CvtColor(frame, processsImageChannels, ColorConversion.Rgb2Hsv);
// var processsImage = new Mat();
// CvInvoke.ExtractChannel(inImage, processsImage, 1);
processViewer.Image = processsImageChannels;
Mat canny = new Mat();
CvInvoke.Canny(inImage, canny, barCanny1.Value, barCanny2.Value, 3, true);
cannyViewer.Image = canny;
//CvInvoke.DrawContours(outImage, contours,-1, new MCvScalar(0,0,255));
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.FindContours(canny, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
var lstParallelogram = new List <Quadrilateral>();
for (int i = 0; i < contours.Size; i++)
{
using (VectorOfPoint contour = contours[i])
using (VectorOfPoint approxContour = new VectorOfPoint())
{
var arc = CvInvoke.ArcLength(contour, true);
// éliminer les objets les plus petits
if (arc / 4 < inImage.Width / 30)
{
continue;
}
CvInvoke.ApproxPolyDP(contour, approxContour, arc * 0.1, true);
if (approxContour.Size == 4)
{
var pts = approxContour.ToArray();
contourImage.DrawPolyline(pts, true, new Bgr(Color.Green));
var quadri = new Quadrilateral(pts, 0.1, 0.1);
if (quadri.IsParallelogram)
{
lstParallelogram.Add(quadri);
}
}
}
}
contourViewer.Image = contourImage;
// suppression des doublons
var comparer = new QuadrilateralCenterComparer(0.3);
lstParallelogram = lstParallelogram.Distinct(comparer).ToList();
var lstSquares = lstParallelogram.Where((x) => x.IsSquare).ToList();
// nombre minimal de cube
if (lstSquares.Count > 5)
{
//var circle = CvInvoke.MinEnclosingCircle(lstCube.SelectMany((x) => x.Points).Select((x) => new PointF(x.X, x.Y)).ToArray());
//inImage.Draw(circle, new Bgr(255, 255, 0));
var minX = lstSquares.Min((x) => x.Center.X);
var maxX = lstSquares.Max((x) => x.Center.X);
var minY = lstSquares.Min((x) => x.Center.Y);
var maxY = lstSquares.Max((x) => x.Center.Y);
//inImage.Draw(new Rectangle((int)minX, (int)minY, (int)(maxX - minX), (int)(maxY - minY)), new Bgr(Color.Bisque), 1);
lstSquares.Min((x) => x.Center.X);
var averageLength = lstSquares.Average((x) => x.AverageLength);
var centerDistance = averageLength * 1.4;
var bottom = new Vector2(lstSquares.Average((x) => x.Bottom.X), lstSquares.Average((x) => x.Bottom.Y));
bottom.Normalize();
var right = new Vector2(bottom.Y, -bottom.X);
var pastilles = new List <Pastille>();
var pastilleOrigine = new Pastille();
pastilleOrigine.m = 0;
pastilleOrigine.n = 0;
pastilleOrigine.Quadrilateral = lstSquares[0];
pastilleOrigine.Center = lstSquares[0].Center;
pastilles.Add(pastilleOrigine);
var origine = lstSquares[0].Center;
for (int i = 1; i < lstSquares.Count; i++)
{
var u = lstSquares[i].Center - origine;
var pastille = new Pastille();
pastille.Quadrilateral = lstSquares[i];
//inImage.DrawPolyline(quadri.Points, true, new Bgr(Color.Blue), 3);
pastille.n = (int)Math.Round(Vector2.Dot(u, bottom) / centerDistance);
pastille.m = (int)Math.Round(Vector2.Dot(u, right) / centerDistance);
pastille.Center = lstSquares[i].Center;
pastilles.Add(pastille);
}
var xMax = pastilles.Max((x) => x.m);
var xMin = pastilles.Min((x) => x.m);
var yMax = pastilles.Max((x) => x.n);
var yMin = pastilles.Min((x) => x.n);
if (xMax - xMin != 3 || yMax - yMin != 3)
{
return; // ce n'est pas un cube 4x4
}
// x et y entre 0 et 3
pastilles.ForEach((x) => { x.m -= xMin; x.n -= yMin; });
// recalcul de centerDistance
centerDistance = 0;
for (int i = 0; i < pastilles.Count - 1; i++)
{
var dm = pastilles[i + 1].m - pastilles[i].m;
var dn = pastilles[i + 1].n - pastilles[i].n;
centerDistance += (pastilles[i].Center - pastilles[i + 1].Center).LengthFast / Math.Sqrt(dm * dm + dn * dn);
}
centerDistance /= pastilles.Count - 1;
Pastille[,] pastilleMatrix = new Pastille[4, 4];
//http://www.wolframalpha.com/input/?i=x%3Dx1%2Bk1*u1,x%3Dx2%2Bk2*u2,y%3Dy1%2Bk1*v1,y%3Dy2%2Bk2*v2+for+x,y
for (int m = 0; m < 4; m++)
{
for (int n = 0; n < 4; n++)
{
var pastille = pastilles.FirstOrDefault((x) => x.m == m && x.n == n);
if (pastille == null)
{
pastille = new Pastille();
pastille.m = m;
pastille.n = n;
// calcul de la position des pastilles non détéctées
foreach (var p in pastilles)
{
pastille.Center += p.Center + (float)centerDistance * ((m - p.m) * right + (n - p.n) * bottom);
}
pastille.Center /= pastilles.Count;
}
pastilleMatrix[m, n] = pastille;
var ptRect = pastille.Center - new Vector2(averageLength / 4);
if (ptRect.X < 0)
{
ptRect.X = 0;
}
else if (ptRect.X + averageLength / 2 >= inImage.Width)
{
ptRect.X = inImage.Width - 1 - (int)averageLength / 2;
}
if (ptRect.Y < 0)
{
ptRect.Y = 0;
}
else if (ptRect.Y + averageLength / 2 >= inImage.Height)
{
ptRect.Y = inImage.Height - 1 - (int)averageLength / 2;
}
var rectangle = new Rectangle((int)ptRect.X, (int)ptRect.Y, (int)averageLength / 2, (int)averageLength / 2);
var rectMat = processsImageChannels.GetSubRect(rectangle);
var color = CvInvoke.Mean(rectMat);
pastille.MeanColor.MCvScalar = color;
var minDist = float.MaxValue;
foreach (var elt in Colors)
{
var dist = (elt.Value - new Vector2((float)color.V0, (float)color.V1)).Length;
if (dist < minDist)
{
minDist = dist;
pastille.Color = elt.Key;
}
}
}
}
// inImage.Draw(pastille.X + ";" + pastille.Y, new Point((int)lstSquares[i].Center.X - 10, (int)lstSquares[i].Center.Y + 10), FontFace.HersheyComplex, 0.5, new Bgr(Color.Aquamarine), 1);
// int n = 0;
h.Add(pastilleMatrix[0, 0].MeanColor.Hue);
s.Add(pastilleMatrix[0, 0].MeanColor.Satuation);
lblH.Text = h.Average().ToString();
lblS.Text = s.Average().ToString();
foreach (var pastille in pastilleMatrix)
{
if (pastille.Quadrilateral != null)
{
inImage.DrawPolyline(pastille.Quadrilateral.Points, true, new Bgr(Color.Blue), 3);
inImage.Draw(new LineSegment2D(new Point((int)(pastille.Quadrilateral.Center.X), (int)(pastille.Quadrilateral.Center.Y)), new Point((int)(pastille.Quadrilateral.Center.X + right.X * 20), (int)(pastille.Quadrilateral.Center.Y + right.Y * 20))), new Bgr(Color.SeaGreen), 3);
inImage.Draw(new LineSegment2D(new Point((int)(pastille.Quadrilateral.Center.X), (int)(pastille.Quadrilateral.Center.Y)), new Point((int)(pastille.Quadrilateral.Center.X + bottom.X * 20), (int)(pastille.Quadrilateral.Center.Y + bottom.Y * 20))), new Bgr(Color.Red), 3);
inImage.Draw(pastille.m + ";" + pastille.n, new Point((int)pastille.Quadrilateral.Center.X - 10, (int)pastille.Quadrilateral.Center.Y + 10), FontFace.HersheyComplex, 0.5, new Bgr(Color.Aquamarine), 1);
}
else
{
var circle = new CircleF(new PointF(pastille.Center.X, pastille.Center.Y), averageLength / 4);
inImage.Draw(circle, new Bgr(Color.Pink), (int)averageLength / 4);
//inImage.Draw(circle, new Bgr(Color.Pink), 3);
}
var l = 20;
var rect = new Rectangle(pastille.m * l + l, pastille.n * l + l, l / 2, l / 2);
inImage.Draw(rect, new Bgr(pastille.Color), l / 2, LineType.AntiAlias);
// n++;
// inImage.Draw(n.ToString(), new Point(quadri.Points.Sum((x) => x.X) / 4 - 10, quadri.Points.Sum((x) => x.Y) / 4 + 10), FontFace.HersheyComplex, 0.5, new Bgr(Color.Aquamarine), 1);
}
inImage.Draw(new CircleF(new PointF(origine.X, origine.Y), 5), new Bgr(Color.Purple), 10);
//var angles = lstParallelogram.SelectMany((x) => x.Angles).ToList();
//angles.Sort();
//var derivateAngle = new List<double>(angles.Count-1);
//for (int a=0;a<angles.Count-1;a++)
//{
// derivateAngle.Add(angles[a + 1] - angles[a]);
//}
//derivateAngle.Sort();
//lblNbFace.Text = derivateAngle.Count((x) => x > 0.5).ToString();
}
else
{
h.Clear();
s.Clear();
}
}
// CvInvoke.inra
// CvInvoke.CvtColor(inImage, outImage, ColorConversion.Rgb2Hsv);
//var hue = outImage.Split()[0];
//CvInvoke.Laplacian(inImage, outImage, DepthType.Default, 3);
// CvInvoke.Erode(inImage, outImage, null, new Point(-1, -1), 3, BorderType.Default, new MCvScalar(1));
viewer.Image = inImage;
});
/*
* Mat outImage = new Mat();
*
* CvInvoke.MedianBlur(inImage, outImage, 5);
*
* Mat canny = new Mat();
*
* CvInvoke.Canny(outImage, canny, barCanny1.Value, barCanny2.Value);
*
*
* var contours = new VectorOfVectorOfPoint();
* var hierarchy = new Mat();
*
* CvInvoke.FindContours(canny, contours, hierarchy, RetrType.List, ChainApproxMethod.ChainApproxNone);
*
*
* CvInvoke.DrawContours(outImage, contours, -1, new MCvScalar(0, 0, 255), 1, LineType.FourConnected, hierarchy);
*
*
* var area = new List<double>();
*
* for(int i=0;i<contours.Size;i++)
* {
* var contour = contours[i];
*
* area.Add( CvInvoke.ContourArea(contour));
* }
*
* area.Sort();
*
* richTextBox1.Text = String.Join("\r\n", area.Select((x) => x.ToString()).ToArray());
*
*
*
* viewer.Image = outImage;
*/
return;
StringBuilder msgBuilder = new StringBuilder("Performance: ");
//Load the image from file and resize it for display
Image <Bgr, Byte> img =
new Image <Bgr, byte>(@"PhotosCube\cube3.jpg");
//Convert the image to grayscale and filter out the noise
UMat uimage = new UMat();
CvInvoke.CvtColor(img, uimage, ColorConversion.Bgr2Gray);
//use image pyr to remove noise
// UMat pyrDown = new UMat();
//CvInvoke.PyrDown(uimage, pyrDown);
//CvInvoke.PyrUp(pyrDown, uimage);
//Image<Gray, Byte> gray = img.Convert<Gray, Byte>().PyrDown().PyrUp();
//#region circle detection
Stopwatch watch = Stopwatch.StartNew();
double cannyThreshold = 30;
/*
* double circleAccumulatorThreshold = 100;
* CircleF[] circles = CvInvoke.HoughCircles(uimage, HoughType.Gradient, 2.0, 20.0, cannyThreshold, circleAccumulatorThreshold, 5);
*
* watch.Stop();
* msgBuilder.Append(String.Format("Hough circles - {0} ms; ", watch.ElapsedMilliseconds));
#endregion
*/
#region Canny and edge detection
watch.Reset(); watch.Start();
double cannyThresholdLinking = 100;
UMat cannyEdges = new UMat();
CvInvoke.Canny(uimage, cannyEdges, cannyThreshold, cannyThresholdLinking);
LineSegment2D[] lines = CvInvoke.HoughLinesP(
cannyEdges,
1, //Distance resolution in pixel-related units
Math.PI / 45.0, //Angle resolution measured in radians.
20, //threshold
30, //min Line width
10); //gap between lines
watch.Stop();
msgBuilder.Append(String.Format("Canny & Hough lines - {0} ms; ", watch.ElapsedMilliseconds));
#endregion
#region Find triangles and rectangles
watch.Reset(); watch.Start();
List <Triangle2DF> triangleList = new List <Triangle2DF>();
List <RotatedRect> boxList = new List <RotatedRect>(); //a box is a rotated rectangle
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.FindContours(cannyEdges, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
CvInvoke.DrawContours(img, contours, -1, new MCvScalar(0, 0, 255));
int count = contours.Size;
for (int i = 0; i < count; i++)
{
using (VectorOfPoint contour = contours[i])
using (VectorOfPoint approxContour = new VectorOfPoint())
{
CvInvoke.ApproxPolyDP(contour, approxContour, CvInvoke.ArcLength(contour, true) * 0.05, true);
var a = new VectorOfVectorOfPoint();
// img.Draw(approxContour, new Bgr(Color.DarkOrange), 2);
CvInvoke.DrawContours(img, approxContour, 0, new MCvScalar(0, 255, 0));
if (CvInvoke.ContourArea(approxContour, false) > 2) //only consider contours with area greater than 250
{
if (approxContour.Size == 3) //The contour has 3 vertices, it is a triangle
{
Point[] pts = approxContour.ToArray();
triangleList.Add(new Triangle2DF(
pts[0],
pts[1],
pts[2]
));
}
else if (approxContour.Size == 4) //The contour has 4 vertices.
{
/*
#region determine if all the angles in the contour are within [80, 100] degree
* bool isRectangle = true;
* Point[] pts = approxContour.ToArray();
* LineSegment2D[] edges = PointCollection.PolyLine(pts, true);
*
* for (int j = 0; j < edges.Length; j++)
* {
* double angle = Math.Abs(
* edges[(j + 1) % edges.Length].GetExteriorAngleDegree(edges[j]));
* if (angle < 80 || angle > 100)
* {
* isRectangle = false;
* break;
* }
* }
#endregion
*
* if (isRectangle) */ // boxList.Add(CvInvoke.MinAreaRect(approxContour));
}
}
}
}
}
watch.Stop();
msgBuilder.Append(String.Format("Triangles & Rectangles - {0} ms; ", watch.ElapsedMilliseconds));
#endregion
this.Text = msgBuilder.ToString();
#region draw triangles and rectangles
//Image<Bgr, Byte> triangleRectangleImage = img.CopyBlank();
//foreach (Triangle2DF triangle in triangleList)
//img.Draw(triangle, new Bgr(Color.DarkBlue), 2);
foreach (RotatedRect box in boxList)
{
img.Draw(box, new Bgr(Color.DarkOrange), 2);
}
#endregion
/*
#region draw circles
* // Image<Bgr, Byte> circleImage = img.CopyBlank();
* // foreach (CircleF circle in circles)
* // img.Draw(circle, new Bgr(Color.Brown), 2);
#endregion
*
*
#region draw lines
* //Image<Bgr, Byte> lineImage = img.CopyBlank();
* foreach (LineSegment2D line in lines)
* img.Draw(line, new Bgr(Color.Green), 2);
#endregion
*/
viewer.Image = img;
}
private void FindStopSign(Mat img, List <Mat> stopSignList, List <Rectangle> boxList, VectorOfVectorOfPoint contours, int[,] hierachy, int idx)
{
for (; idx >= 0; idx = hierachy[idx, 0])
{
using (VectorOfPoint c = contours[idx])
using (VectorOfPoint approx = new VectorOfPoint())
{
CvInvoke.ApproxPolyDP(c, approx, CvInvoke.ArcLength(c, true) * 0.02, true);
double area = CvInvoke.ContourArea(approx);
if (area > 200)
{
double ratio = CvInvoke.MatchShapes(_octagon, approx, Emgu.CV.CvEnum.ContoursMatchType.I3);
if (ratio > 0.1) //not a good match of contour shape
{
//check children
if (hierachy[idx, 2] >= 0)
{
FindStopSign(img, stopSignList, boxList, contours, hierachy, hierachy[idx, 2]);
}
continue;
}
Rectangle box = CvInvoke.BoundingRectangle(c);
Mat candidate = new Mat();
using (Mat tmp = new Mat(img, box))
CvInvoke.CvtColor(tmp, candidate, ColorConversion.Bgr2Gray);
//set the value of pixels not in the contour region to zero
using (Mat mask = new Mat(candidate.Size.Height, candidate.Width, DepthType.Cv8U, 1))
{
mask.SetTo(new MCvScalar(0));
CvInvoke.DrawContours(mask, contours, idx, new MCvScalar(255), -1, LineType.EightConnected, null, int.MaxValue, new Point(-box.X, -box.Y));
double mean = CvInvoke.Mean(candidate, mask).V0;
CvInvoke.Threshold(candidate, candidate, mean, 255, ThresholdType.Binary);
CvInvoke.BitwiseNot(candidate, candidate);
CvInvoke.BitwiseNot(mask, mask);
candidate.SetTo(new MCvScalar(0), mask);
}
int minMatchCount = 8;
double uniquenessThreshold = 0.8;
VectorOfKeyPoint _observeredKeypoint = new VectorOfKeyPoint();
Mat _observeredDescriptor = new Mat();
_detector.DetectAndCompute(candidate, null, _observeredKeypoint, _observeredDescriptor, false);
if (_observeredKeypoint.Size >= minMatchCount)
{
int k = 2;
Mat mask;
using (VectorOfVectorOfDMatch matches = new VectorOfVectorOfDMatch())
{
_modelDescriptorMatcher.KnnMatch(_observeredDescriptor, matches, k, null);
mask = new Mat(matches.Size, 1, DepthType.Cv8U, 1);
mask.SetTo(new MCvScalar(255));
Features2DToolbox.VoteForUniqueness(matches, uniquenessThreshold, mask);
}
int nonZeroCount = CvInvoke.CountNonZero(mask);
if (nonZeroCount >= minMatchCount)
{
boxList.Add(box);
stopSignList.Add(candidate);
}
}
}
}
}
}
void DetectPolygons(UMat cannyEdgesImg, bool detectTriangles, bool detectRectangles, bool detectHexagons, int area)
{
triangles = new List <Triangle2DF>();
rectangles = new List <RotatedRect>();
hexagons = new List <LineSegment2D[]>();
//Find contours
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
CvInvoke.FindContours(cannyEdgesImg, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
//Check all contours
for (int i = 0; i < contours.Size; i++)
{
VectorOfPoint contour = contours[i];
//Approximate a polygon
VectorOfPoint approxContour = new VectorOfPoint();
CvInvoke.ApproxPolyDP(contour, approxContour, CvInvoke.ArcLength(contour, true) * 0.025, true);
//Contours bigger than defined area
if (CvInvoke.ContourArea(approxContour, false) > 250)
{
int areaTresshold = 1000;
if (area != 0)
{
if (CvInvoke.ContourArea(approxContour, false) < area - areaTresshold ||
CvInvoke.ContourArea(approxContour, false) > area + areaTresshold)
{
//Consider contours near defined area
//If area is smaller or bigger than defined -> continue to next countour as this one doesn't fit
continue;
}
}
//Add triangle
if (approxContour.Size == 3 && detectTriangles)
{
Point[] pts = approxContour.ToArray();
triangles.Add(new Triangle2DF(pts[0], pts[1], pts[2]));
}
//Add rectangle
else if (approxContour.Size == 4 && detectRectangles)
{
//Determine if all angles in the contour are within [80, 100] degree
bool isRectangle = true;
Point[] pts = approxContour.ToArray();
LineSegment2D[] edges = PointCollection.PolyLine(pts, true);
for (int j = 0; j < edges.Length; j++)
{
double angle = Math.Abs(edges[(j + 1) % edges.Length].GetExteriorAngleDegree(edges[j]));
if (angle < 80 || angle > 100)
{
isRectangle = false;
break;
}
}
if (isRectangle)
{
rectangles.Add(CvInvoke.MinAreaRect(approxContour));
}
}
//Add hexagon
else if (approxContour.Size == 6 && detectHexagons)
{
// Determine if all the angles in the contour are within [50, 70] degree
bool isHexagon = true;
Point[] pts = approxContour.ToArray();
LineSegment2D[] edges = PointCollection.PolyLine(pts, true);
for (int j = 0; j < edges.Length; j++)
{
double angle = Math.Abs(edges[(j + 1) % edges.Length].GetExteriorAngleDegree(edges[j]));
if (angle < 50 || angle > 70)
{
isHexagon = false;
break;
}
}
if (isHexagon)
{
hexagons.Add(edges);
}
}
}
}
}
private static void FindRectangle(int min, int max)
{
Image <Rgb, Byte> img = new Image <Rgb, byte>(ori_img);
Image <Gray, Byte> edgeImage = new Image <Gray, byte>(show_img);
#region Find rectangles
boxList = new List <RotatedRect>(); //a box is a rotated rectangle
double rate = img.Width * img.Height / 3864714.0;
bool isIDPExist = false, isUseExist = false, isAddressExist = false;
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.FindContours(edgeImage, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
int count = contours.Size;
for (int i = 0; i < count; i++)
{
using (VectorOfPoint contour = contours[i])
using (VectorOfPoint approxContour = new VectorOfPoint())
{
CvInvoke.ApproxPolyDP(contour, approxContour, CvInvoke.ArcLength(contour, true) * 0.05, true);
double area = CvInvoke.ContourArea(contour, false);
if (area > 100000 * rate && area < 142000 * rate && !isIDPExist)
{
// eid, date, price
Point[] pts = contour.ToArray();
PointF[] ptfs = new PointF[pts.Length];
for (int pi = 0; pi < pts.Length; pi++)
{
ptfs[pi] = new PointF(pts[pi].X, pts[pi].Y);
}
Rectangle rec = PointCollection.BoundingRectangle(ptfs);
img.Draw(rec, new Rgb(Color.DarkOrange), 2);
rects.Add(rec);
isIDPExist = true;
}
else if (area > 350000 * rate && area < 450000 * rate)
{
// use
Point[] pts = contour.ToArray();
PointF[] ptfs = new PointF[4];
int minx = int.MaxValue, miny = int.MaxValue, maxx = 0, maxy = 0;
for (int pi = 0; pi < pts.Length; pi++)
{
if (pts[pi].X < minx)
{
minx = pts[pi].X;
}
if (pts[pi].Y < miny)
{
miny = pts[pi].Y;
}
if (pts[pi].X > maxx)
{
maxx = pts[pi].X;
}
if (pts[pi].Y > maxy)
{
maxy = pts[pi].Y;
}
}
ptfs[0] = new PointF(minx, miny);
ptfs[1] = new PointF(minx, (miny + maxy) / 2);
ptfs[2] = new PointF(maxx, miny);
ptfs[3] = new PointF(maxx, (miny + maxy) / 2);
Rectangle rec = PointCollection.BoundingRectangle(ptfs);
img.Draw(PointCollection.BoundingRectangle(ptfs), new Rgb(Color.DarkOrange), 2);
if (!isUseExist)
{
rects.Add(rec);
isUseExist = true;
}
PointF[] ptfks = new PointF[4];
ptfks[0] = new PointF(maxx * 1.5f, maxy);
ptfks[1] = new PointF(maxx * 1.5f, (float)(maxy + 32 * rate));
ptfks[2] = new PointF(minx, maxy);
ptfks[3] = new PointF(minx, (float)(maxy + 32 * rate));
Rectangle rec2 = PointCollection.BoundingRectangle(ptfks);
img.Draw(PointCollection.BoundingRectangle(ptfks), new Rgb(Color.DarkOrange), 2);
if (!isAddressExist)
{
rects.Add(rec2);
isAddressExist = true;
}
}
else if (area > min * rate && area < max * rate)
{
Point[] pts = contour.ToArray();
PointF[] ptfs = new PointF[pts.Length];
for (int pi = 0; pi < pts.Length; pi++)
{
ptfs[pi] = new PointF(pts[pi].X, pts[pi].Y);
}
Rectangle rec = PointCollection.BoundingRectangle(ptfs);
img.Draw(rec, new Rgb(Color.DarkOrange), 2);
rects.Add(rec);
}
}
}
}
#endregion
#region draw rectangles
foreach (RotatedRect box in boxList)
{
img.Draw(box, new Rgb(Color.DarkOrange), 2);
}
pre_img = show_img;
show_img = img.Bitmap;
rform.UpdateImage(show_img);
//img.Save("rect_" + this.count + ".png");
#endregion
}
void DetectPolygons(UMat cannyEdgesImg, bool detectTriangles, bool detectRectangles, bool detectHexagons, int area)
{
triangles = new List <Triangle2DF>();
rectangles = new List <RotatedRect>();
hexagons = new List <LineSegment2D[]>();
// find contours from binary image
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
CvInvoke.FindContours(cannyEdgesImg, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
for (int i = 0; i < contours.Size; i++)
{ // go trough all detected contours
VectorOfPoint contour = contours[i]; // select i-th contour
// approximate a polygon
VectorOfPoint approxContour = new VectorOfPoint();
CvInvoke.ApproxPolyDP(contour, approxContour, CvInvoke.ArcLength(contour, true) * 0.025, true);
if (CvInvoke.ContourArea(approxContour, false) > 250) //only consider contours bigger than defined area
{
int areaTresshold = 1000;
if (area != 0)
{
if (CvInvoke.ContourArea(approxContour, false) < area - areaTresshold || CvInvoke.ContourArea(approxContour, false) > area + areaTresshold)
{ //only consider contours near defined area
// if area is smaller or bigger than defined -> continue to next countour as this one doesn't fit
continue;
}
// debug - min area
//if (CvInvoke.ContourArea(approxContour, false) > area)
// continue;
}
if (approxContour.Size == 3 && detectTriangles)
{ // triangle
Point[] pts = approxContour.ToArray(); // take points that define a triangle
triangles.Add(new Triangle2DF(pts[0], pts[1], pts[2])); // add triangle to the list
}
else if (approxContour.Size == 4 && detectRectangles)
{ // rectangle
// Determine if all the angles in the contour are within [80, 100] degree
bool isRectangle = true;
// create a line segment from points
Point[] pts = approxContour.ToArray();
LineSegment2D[] edges = PointCollection.PolyLine(pts, true);
for (int j = 0; j < edges.Length; j++)
{ // go trough all edges of a potential rectangle
// get angle between two adjcent edges
double angle = Math.Abs(edges[(j + 1) % edges.Length].GetExteriorAngleDegree(edges[j]));
if (angle < 80 || angle > 100)
{
isRectangle = false;
break;
}
}
if (isRectangle)
{
rectangles.Add(CvInvoke.MinAreaRect(approxContour)); // if it's a rectangle add it to the list
}
}
else if (approxContour.Size == 6 && detectHexagons)
{ // hexagon
// Determine if all the angles in the contour are within [50, 70] degree
bool isHexagon = true;
// create a line segment from points
Point[] pts = approxContour.ToArray();
LineSegment2D[] edges = PointCollection.PolyLine(pts, true);
for (int j = 0; j < edges.Length; j++)
{ // go trough all edges of a potential hexagon
// get angle between two adjcent edges
double angle = Math.Abs(edges[(j + 1) % edges.Length].GetExteriorAngleDegree(edges[j]));
if (angle < 50 || angle > 70)
{
isHexagon = false;
break;
}
}
if (isHexagon)
{ // if it's a hexagon add it to the list
hexagons.Add(edges);
}
}
}
}
}
private void FindStopSign(Image <Bgr, byte> img, List <Image <Gray, Byte> > stopSignList, List <Rectangle> boxList, VectorOfVectorOfPoint contours, int[,] hierachy, int idx)
{
for (; idx >= 0; idx = hierachy[idx, 0])
{
using (VectorOfPoint c = contours[idx])
using (VectorOfPoint approx = new VectorOfPoint())
{
CvInvoke.ApproxPolyDP(c, approx, CvInvoke.ArcLength(c, true) * 0.02, true);
double area = CvInvoke.ContourArea(approx);
if (area > 200)
{
double ratio = CvInvoke.MatchShapes(_octagon, approx, Emgu.CV.CvEnum.ContoursMatchType.I3);
if (ratio > 0.1) //not a good match of contour shape
{
//check children
if (hierachy[idx, 2] >= 0)
{
FindStopSign(img, stopSignList, boxList, contours, hierachy, hierachy[idx, 2]);
}
continue;
}
Rectangle box = CvInvoke.BoundingRectangle(c);
Image <Gray, Byte> candidate;
using (Image <Bgr, Byte> tmp = img.Copy(box))
candidate = tmp.Convert <Gray, byte>();
//Emgu.CV.UI.ImageViewer.Show(candidate);
//set the value of pixels not in the contour region to zero
using (Image <Gray, Byte> mask = new Image <Gray, byte>(box.Size))
{
mask.Draw(contours, idx, new Gray(255), -1, LineType.EightConnected, null, int.MaxValue, new Point(-box.X, -box.Y));
double mean = CvInvoke.Mean(candidate, mask).V0;
candidate._ThresholdBinary(new Gray(mean), new Gray(255.0));
candidate._Not();
mask._Not();
candidate.SetValue(0, mask);
}
int minMatchCount = 8;
double uniquenessThreshold = 0.8;
VectorOfKeyPoint _observeredKeypoint = new VectorOfKeyPoint();
Mat _observeredDescriptor = new Mat();
_detector.DetectAndCompute(candidate, null, _observeredKeypoint, _observeredDescriptor, false);
if (_observeredKeypoint.Size >= minMatchCount)
{
int k = 2;
//Matrix<int> indices = new Matrix<int>(_observeredDescriptor.Size.Height, k);
Matrix <byte> mask;
//using (Matrix<float> dist = new Matrix<float>(_observeredDescriptor.Size.Height, k))
using (VectorOfVectorOfDMatch matches = new VectorOfVectorOfDMatch())
{
_modelDescriptorMatcher.KnnMatch(_observeredDescriptor, matches, k, null);
mask = new Matrix <byte>(matches.Size, 1);
mask.SetValue(255);
Features2DToolbox.VoteForUniqueness(matches, uniquenessThreshold, mask);
}
int nonZeroCount = CvInvoke.CountNonZero(mask);
if (nonZeroCount >= minMatchCount)
{
boxList.Add(box);
stopSignList.Add(candidate);
}
}
}
}
}
}
public static (ShapeType, List <Point>) Check(List <Point> polygonPoints, int canvasWidth, int canvasHeigth)
{
if (!ClosedContour(polygonPoints))
{
return(ShapeType.None, null);
}
CreateBitmap(canvasWidth, canvasHeigth, polygonPoints);
Image <Bgr, byte> img = new Image <Bgr, byte>(@"IMAGE.bmp");
Image <Gray, byte> processed = img
.Convert <Gray, byte>()
.SmoothGaussian(5)
.Canny(240, 200);
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
Mat m = new Mat();
CvInvoke.FindContours(
processed, contours, m, Emgu.CV.CvEnum.RetrType.External,
Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple);
if (contours.Size == 0)
{
return(ShapeType.None, null);
}
double perimeter = CvInvoke.ArcLength(contours[0], true);
var polygon = new VectorOfPoint();
CvInvoke.ApproxPolyDP(contours[0], polygon, 0.02 * perimeter, true);
if (!CvInvoke.IsContourConvex(polygon))
{
return(ShapeType.None, null);
}
var moments = CvInvoke.Moments(contours[0]);
int x = (int)(moments.M10 / moments.M00);
int y = (int)(moments.M01 / moments.M00);
Point center = new Point(x, y);
List <Point> points = new List <Point>();
for (int i = 0; i < polygon.Size; i++)
{
points.Add(new Point(polygon[i].X, polygon[i].Y));
}
if (points.Count == 3)
{
return(ShapeType.Triangle, points);
}
else if (points.Count == 4)
{
return(RectangleOrSquare(center, perimeter, points));
}
else if (points.Count > 4)
{
return(CircleOrEllipse(center, perimeter, points));
}
return(ShapeType.None, null);
}
public static IEnumerable <Rectangle> DetectSquares(Mat sourceImage)
{
Mat destinationImage = new Mat();
destinationImage.Create(sourceImage.Rows, sourceImage.Cols, sourceImage.Depth, 1);
Mat greyscaleImage = new Mat();
CvInvoke.CvtColor(sourceImage, greyscaleImage, ColorConversion.Bgr2Gray);
Mat detectedEdges = new Mat();
CvInvoke.GaussianBlur(greyscaleImage, detectedEdges, new Size(1, 1), 1);
CvInvoke.Canny(detectedEdges, detectedEdges, Treshold, Treshold * 3);
CvInvoke.Dilate(detectedEdges, detectedEdges, new Mat(), new Point(-1, -1), 3, BorderType.Default, new MCvScalar(255, 255, 255));
//ImageViewer.Show(detectedEdges);
List <Rectangle> boxList = new List <Rectangle>();
//List<LineSegment2D> lines = new List<LineSegment2D>();
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.FindContours(detectedEdges, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
int count = contours.Size;
for (int i = 0; i < count; i++)
{
using (VectorOfPoint approxContour = new VectorOfPoint())
using (VectorOfPoint approx = contours[i])
{
CvInvoke.ApproxPolyDP(approx, approxContour, CvInvoke.ArcLength(approx, true) * 0.035, true);
Point[] pts = approxContour.ToArray();
LineSegment2D[] edges = PointCollection.PolyLine(pts, true);
//lines.AddRange(edges);
double contourArea = CvInvoke.ContourArea(approxContour, true);
if (contourArea >= 500 && contourArea <= detectedEdges.Width * detectedEdges.Height / 5)
{
if (approxContour.Size >= 2)
{
bool isRectangle = true;
for (int j = 0; j < edges.Length; j++)
{
double angle = Math.Abs(edges[(j + 1) % edges.Length]
.GetExteriorAngleDegree(edges[j]));
if (angle < 85 || angle > 95)
{
isRectangle = false;
break;
}
}
if (isRectangle)
{
RotatedRect currentRectangle = CvInvoke.MinAreaRect(approxContour);
Rectangle minRectangle = currentRectangle.MinAreaRect();
//int ninetyPercentWidth = minRectangle.Width - (int)(minRectangle.Width * 0.05);
//int ninetyPercentHeight = minRectangle.Height - (int)(minRectangle.Height * 0.05);
//minRectangle.Size = new Size(ninetyPercentWidth, ninetyPercentHeight);
//minRectangle.Offset(5, 5);
boxList.Add(minRectangle);
}
}
}
}
}
}
return(boxList);
}
void ProcessFrame(object sender, EventArgs e)
{
Mat frame = _cameraCapture.QueryFrame();
Mat smoothedFrame = new Mat();
CvInvoke.GaussianBlur(frame, smoothedFrame, new Size(3, 3), 1); //filter out noises
#region use the BG/FG detector to find the foreground mask
Mat foregroundMask = new Mat();
_fgDetector.Apply(smoothedFrame, foregroundMask);
#endregion
List <TrackedObject> toBeRemovedList = new List <TrackedObject>();
List <Rectangle> boundingBoxesTracked = new List <Rectangle>();
List <int> idsTracked = new List <int>();
foreach (TrackedObject t in _trackers)
{
Rectangle boundingBox;
bool success = t.Update(frame, out boundingBox);
if (success)
{
boundingBoxesTracked.Add(boundingBox);
idsTracked.Add(t.Id);
}
else
{
toBeRemovedList.Add(t);
}
}
foreach (TrackedObject t in toBeRemovedList)
{
_trackers.Remove(t);
t.Dispose();
}
List <Rectangle> newObjects = new List <Rectangle>();
int minAreaThreshold = 100;
using (Mat canny = new Mat())
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.Canny(foregroundMask, canny, 180, 100);
CvInvoke.FindContours(canny, contours, null, RetrType.External, ChainApproxMethod.ChainApproxSimple);
int count = contours.Size;
for (int i = 0; i < count; i++)
{
using (VectorOfPoint contour = contours[i])
using (VectorOfPoint approxContour = new VectorOfPoint())
{
CvInvoke.ApproxPolyDP(contour, approxContour, CvInvoke.ArcLength(contour, true) * 0.05, true);
if (CvInvoke.ContourArea(approxContour, false) > minAreaThreshold) //only consider contours with area greater than threshold
{
Rectangle r = CvInvoke.BoundingRectangle(approxContour);
bool overlapped = false;
foreach (var trackedObj in boundingBoxesTracked)
{
if (r.IntersectsWith(trackedObj))
{
overlapped = true;
break;
}
}
if (!overlapped)
{
newObjects.Add(r);
}
}
}
}
}
foreach (Rectangle r in newObjects)
{
TrackedObject t = new TrackedObject(_idCounter);
boundingBoxesTracked.Add(r);
idsTracked.Add(_idCounter);
t.Init(frame, r);
_trackers.Add(t);
_idCounter++;
}
for (int i = 0; i < boundingBoxesTracked.Count; i++)
{
Rectangle boundingBox = boundingBoxesTracked[i];
CvInvoke.Rectangle(frame, boundingBox, new MCvScalar(255.0, 255.0, 255.0), 2);
CvInvoke.PutText(frame, idsTracked[i].ToString(), new Point(boundingBox.X, boundingBox.Y), FontFace.HersheyPlain,
1.0, new MCvScalar(255.0, 255.0, 255.0));
}
imageBox1.Image = frame;
imageBox2.Image = foregroundMask;
}
public Image <Bgr, byte> ReturnContours(Image <Bgr, byte> image, int minArea, Label label)
{
if (prepImage == null)
{
prepImage = ReturnBinarized(image, 90);
}
var resultImage = prepImage.Convert <Gray, byte>();
int trisCount = 0;
int rectCount = 0;
int circleCount = 0;
// shapes
var contours = new VectorOfVectorOfPoint();
CvInvoke.FindContours(
resultImage,
contours,
null,
RetrType.List,
ChainApproxMethod.ChainApproxSimple);
var contoursImage = sourceImage.Copy();
for (int i = 0; i < contours.Size; i++)
{
//contoursImage.Draw(points, new Bgr(Color.GreenYellow), 2); // отрисовка точек
var approxContour = new VectorOfPoint();
CvInvoke.ApproxPolyDP(contours[i], approxContour, CvInvoke.ArcLength(contours[i], true) * 0.05, true);
var points = approxContour.ToArray();
if (approxContour.Size == 3)
{
var S = CvInvoke.ContourArea(approxContour, false);
if (S > minArea)
{
trisCount++;
var pointsTri = approxContour.ToArray();
contoursImage.Draw(new Triangle2DF(pointsTri[0], pointsTri[1], pointsTri[2]), new Bgr(Color.GreenYellow), 2);
}
}
if (isRectangle(points))
{
var S = CvInvoke.ContourArea(approxContour, false);
if (S > minArea)
{
rectCount++;
contoursImage.Draw(CvInvoke.MinAreaRect(approxContour), new Bgr(Color.Blue), 2);
}
}
}
//circles
List <CircleF> circles = new List <CircleF>(CvInvoke.HoughCircles(resultImage, HoughModes.Gradient, 1.0, 250, 100, 50, 5, contoursImage.Width / 3));
foreach (CircleF circle in circles)
{
CvInvoke.Circle(contoursImage, Point.Round(circle.Center), (int)circle.Radius, new Bgr(Color.Red).MCvScalar, 2);
circleCount++;
//resultImage.Draw(circle, new Bgr(Color.GreenYellow), 2);
}
label.Text = "Количество треугольников = " + trisCount + "\nКоличество прямоугольников = " + rectCount + "\nКоличество кругов = " + circleCount;
return(contoursImage);
}
// Maximum Value, Minimum Value and their locations
// Mean Color or Mean Intensity
public void calcularRegionProps(Image <Gray, byte> inputRegionIMG, double AreaMin)
{
// Declaração do vetor de vetores de pontos
Emgu.CV.Util.VectorOfVectorOfPoint vetordeVetdePontos = new Emgu.CV.Util.VectorOfVectorOfPoint();
// Declaração de uma matriz
Mat hierarquia = new Mat();
// Aplicação da função FindContour
CvInvoke.FindContours(
inputRegionIMG // Recebe a imagem de entrada
, vetordeVetdePontos // Recebe um vetor de pontos de contorno
, hierarquia // Recebe a hierarquia dos pontos
, Emgu.CV.CvEnum.RetrType.Tree // Recebe o tipo de arvore e contornos
, Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxNone // Tip de aproximação aos contornos
, new Point(0, 0) // Offset do ponto, posso omitir ou declarar um ponto a 0 0
);
Image <Bgr, Byte> input = inputRegionIMG.Convert <Bgr, byte>();
//Até aqui encontro o contorno. Deve ser só 1!!!, portanto deve ser o contorno 0,
//mas mesmo assim vamos fazer um teste para ver qual o contorno a usar
// Pontos buffer
PointF buffer_Minx = new PointF(inputRegionIMG.Width, inputRegionIMG.Height);
PointF buffer_MaxX = new PointF(0, 0);
PointF buffer_MinY = new PointF(inputRegionIMG.Width, inputRegionIMG.Height);
PointF buffer_MaxY = new PointF(0, 0);
for (int i = 0; i < vetordeVetdePontos.Size; i++)
{
Area = Math.Abs(CvInvoke.ContourArea(vetordeVetdePontos[i], true)); // calcula a area do contorno
if (Area >= AreaMin)
{
for (int iter = 0; iter < vetordeVetdePontos[i].Size; iter++)
{
//----------------- Calculo do extreme -----------------
// Calcula o valor do ponto mais à esquerda
if (vetordeVetdePontos[i][iter].X < buffer_Minx.X)
{
buffer_Minx = vetordeVetdePontos[i][iter];
}
// Calcula o valor do ponto mais à direita
if (vetordeVetdePontos[i][iter].X > buffer_MaxX.X)
{
buffer_MaxX = vetordeVetdePontos[i][iter];
}
// Calcula o valor do ponto Y mais em cima
if (vetordeVetdePontos[i][iter].Y < buffer_MinY.Y)
{
buffer_MinY = vetordeVetdePontos[i][iter];
}
// Calcula o valor do ponto Y mais em baixo
if (vetordeVetdePontos[i][iter].Y > buffer_MaxY.Y)
{
buffer_MaxY = vetordeVetdePontos[i][iter];
}
//----------------- Fim do calculo do extreme -----------------
}
// ------------- Calculo do Centroid ---------------------
Moments momento = CvInvoke.Moments(vetordeVetdePontos[i]);
int X = (int)(momento.M10 / momento.M00);
int Y = (int)(momento.M01 / momento.M00);
Centroid = new PointF(X, Y);
// ------------------------------------------------------
// ------------ Calculo do AspectRatio ------------------
AspectRatio = inputRegionIMG.Width / inputRegionIMG.Height;
//-------------------------------------------------------
//------------- Calculo da BoundingBox ------------------
BoundingBox = CvInvoke.BoundingRectangle(vetordeVetdePontos[i]);
//-------------------------------------------------------
// ------------ Calculo do Extent -------------------
float rect_area = BoundingBox.Width * BoundingBox.Height;
Extent = (float)Area / rect_area;
// ------------------------------------------------------
// --------------- ConvectHULL --------------------------
CvInvoke.ConvexHull(vetordeVetdePontos[i], ConvexHull, false);
//-------------------------------------------------------
// --------------- ConvectHULL_area ---------------------
ConvexHull_area = CvInvoke.ContourArea(ConvexHull);
//-------------------------------------------------------
//----------------- Solidity ---------------------------
Solidity = Area / ConvexHull_area;
// ------------------------------------------------------
//-------------- Diametro Equivalente -------------------
EquivalentDiameter = Math.Sqrt(4 * Area / Math.PI);
// ------------------------------------------------------
//--------------- Circulo Envolvente --------------------
CirculoEnvolvente = CvInvoke.MinEnclosingCircle(vetordeVetdePontos[i]);
//-------------------------------------------------------
//--------------- Circulo Perimetro --------------------
perimetro = CvInvoke.ArcLength(vetordeVetdePontos[i], true);
// -----------------------------------------------------
// -------------- Circularity (Fator de forma)----------
Circularity = (4 * Math.PI * Area) / (perimetro * perimetro);
//------------------------------------------------------
// --------------- Verifica se é convexo ---------------
isConvex = CvInvoke.IsContourConvex(vetordeVetdePontos[i]);
//------------------------------------------------------
// ------------- Apriximação do contorno ---------------
CvInvoke.ApproxPolyDP(
vetordeVetdePontos[i], // Cada vetor de um contorno iterado
ContourApproximation, // Vetor que vai conter a aproximação
0.1 * perimetro, // Expande o perimetro
true // Calcula um aproximação ao contorno externo
);
// -----------------------------------------------------
// ------------- Devolve o contorno --------------------
Contorno = vetordeVetdePontos[i];
// ------------------------------------------------------
// ------------ Retangulo rodado ---------------------
RotatedRect retanguloRodado = CvInvoke.MinAreaRect(vetordeVetdePontos[i]);
PointF[] vetorPontos = CvInvoke.BoxPoints(retanguloRodado);
BoundingBoxRectRodado = new Point[vetorPontos.Length];
for (int iterador = 0; iterador < vetorPontos.Length; iterador++)
{
BoundingBoxRectRodado[iterador].X = (int)vetorPontos[iterador].X;
BoundingBoxRectRodado[iterador].Y = (int)vetorPontos[iterador].Y;
}
// ------------ AnguloRecExterior ----------------------
AnguloRectExterior = retanguloRodado.Angle;
// -----------------------------------------------------
// ------------ EllipseImagem --------------------------
EllipseValores = CvInvoke.FitEllipseAMS(vetordeVetdePontos[i]);
// -----------------------------------------------------
// Fitting a Line ---------------
//---------------------------
// salta do ciclo for
i = vetordeVetdePontos.Size;
}
}
Extreme.Mais_a_esquerda = buffer_Minx;
Extreme.Mais_a_Direita = buffer_MaxX;
Extreme.Mais_em_baixo = buffer_MaxY;
Extreme.Mais_em_cima = buffer_MinY;
}
private Mat DoCalibration(Image <Bgr, byte> medianBlurImageIn)
{
DebugImages[(int)SelectedImage.InImageB] = medianBlurImageIn[0].Mat;
DebugImages[(int)SelectedImage.InImageG] = medianBlurImageIn[1].Mat;
DebugImages[(int)SelectedImage.InImageR] = medianBlurImageIn[2].Mat;
var InImageSum = medianBlurImageIn[0] + medianBlurImageIn[1] + medianBlurImageIn[2];
DebugImages[(int)SelectedImage.InImageSum] = InImageSum.Mat;
Mat threshold = new Mat();
CvInvoke.Threshold(InImageSum, threshold, Parameters.Threshold, 255, ThresholdType.Binary);
DebugImages[(int)SelectedImage.threshold] = threshold;
Mat CannyImage = new Mat();
CvInvoke.Canny(threshold, CannyImage, Parameters.CannyThreshold1, Parameters.CannyThreshold2, 3, true);
DebugImages[(int)SelectedImage.Canny] = CannyImage;
var contoursImage = medianBlurImageIn.Clone();
DebugImages[(int)SelectedImage.approxContour] = contoursImage.Mat;
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.FindContours(CannyImage, contours, null, RetrType.External, ChainApproxMethod.ChainApproxNone);
VectorOfPoint maxContour = null;
double arcSize = -1;
for (int i = 0; i < contours.Size; i++)
{
var arc = CvInvoke.ArcLength(contours[i], true);
if (arc > arcSize)
{
arcSize = arc;
maxContour = contours[i];
}
}
if (maxContour != null)
{
using (VectorOfPoint approxContour = new VectorOfPoint())
{
CvInvoke.ApproxPolyDP(maxContour, approxContour, Parameters.ContourEpsilon, true);
var convexContour = CvInvoke.ConvexHull(approxContour.ToArray().Select((x) => new PointF(x.X, x.Y)).ToArray());
var pointConvexContour = convexContour.Select((x) => new Point((int)x.X, (int)x.Y)).ToArray();
var circle = CvInvoke.MinEnclosingCircle(convexContour);
if (convexContour.Length == 6 && validateAsked)
{
validateAsked = false;
Parameters.Center = new Point((int)circle.Center.X, (int)circle.Center.Y);
var maxY = convexContour.Max((x) => x.Y);
var indexSommetHaut = convexContour.ToList().FindIndex((x) => x.Y >= maxY - 0.1);
for (int i = indexSommetHaut; i < convexContour.Length; i++)
{
Parameters.Points[i] = pointConvexContour[i];
}
for (int i = 0; i < indexSommetHaut; i++)
{
Parameters.Points[i] = pointConvexContour[i];
}
grid.Refresh();
Save();
chkAutoCalibration.Checked = false;
}
contoursImage.DrawPolyline(pointConvexContour, true, new Bgr(Color.Green), 3);
contoursImage.Draw(circle, new Bgr(Color.DarkGreen), 3);
contoursImage.Draw(new Cross2DF(circle.Center, 10, 10), new Bgr(Color.DarkGreen), 3);
}
}
return(DebugImages[(int)Parameters.SelectedImage]);
}
}
public void DisplayWebcam(popup popup)
{
while (true)
{
Mat frame = ReadCamera1();
int largestCircle = 0;
List <Shape> foundShape = new List <Shape>();
List <char> shapeType = new List <char>();
// resize to PictureBox aspect ratio
int newHeight = (frame.Size.Height * pictureBox0.Size.Width) / frame.Size.Width;
Size newSize = new Size(pictureBox0.Size.Width, newHeight);
CvInvoke.Resize(frame, frame, newSize);
Image <Hsv, Byte> img = frame.ToImage <Hsv, Byte>();
Image <Gray, byte> coralNestImg = frame.ToImage <Gray, Byte>();
Image <Gray, byte> coralOutcropImg = frame.ToImage <Gray, Byte>();
Image <Gray, byte> starfishImg = frame.ToImage <Gray, Byte>();
Image <Bgr, byte> drawnImage = frame.ToImage <Bgr, byte>();
Image <Bgr, byte> coralNestDrawn = frame.ToImage <Bgr, byte>();
Image <Bgr, byte> coralOutcropDrawn = frame.ToImage <Bgr, byte>();
Image <Bgr, byte> starfishDrawn = frame.ToImage <Bgr, byte>();
Image <Gray, byte> gridImg = frame.ToImage <Gray, Byte>();
Image <Bgr, byte> gridDrawn = frame.ToImage <Bgr, byte>();
//Line Follow
Hsv T_Lower = new Hsv(colorThresholds[4].h_Lower, colorThresholds[4].s_Lower, colorThresholds[4].v_Lower);
Hsv T_Upper = new Hsv(colorThresholds[4].h_Upper, colorThresholds[4].s_Upper, colorThresholds[4].v_Upper);
Image <Gray, byte> laneImg = frame.ToImage <Gray, Byte>();
laneImg = img.InRange(T_Lower, T_Upper).Erode(2).Dilate(2);
//count for columbs
int leftC = 0;
int centerC = 0;
int rightC = 0;
for (int i = (laneImg.Height / 20) * 15; i < laneImg.Height; i++)
{
for (int j = (laneImg.Width / 20) * 14; j < (laneImg.Width / 20) * 16; j++)
{
//left
if (laneImg.Data[i, j, 0] == 255)
{
leftC++;
}
}
for (int j = (laneImg.Width / 20) * 16; j < (laneImg.Width / 20) * 18; j++)
{
//center
if (laneImg.Data[i, j, 0] == 255)
{
centerC++;
}
}
for (int j = (laneImg.Width / 20) * 18; j < (laneImg.Width / 20) * 20; j++)
{
//right
if (laneImg.Data[i, j, 0] == 255)
{
rightC++;
}
}
}
if (leftC > centerC && leftC > rightC)
{
//twist left
Twist twist = new Twist();
twist.Linear.Z = 1f;
SetInput(twist);
label7.Invoke(new Action(() => {
label7.Text = "left";
}));
}
else
{
if (centerC > rightC && centerC > leftC)
{
// twist center
Twist twist = new Twist();
twist.Linear.X = 1f;
SetInput(twist);
label7.Invoke(new Action(() => {
label7.Text = "center";
}));
}
else
{
//twist right
Twist twist = new Twist();
twist.Linear.Z = -1f;
SetInput(twist);
label7.Invoke(new Action(() => {
label7.Text = "right";
}));
}
}
if (leftC + rightC + centerC <= 100)
{
Twist twist = new Twist();
twist.Linear.X = 0;
SetInput(twist);
//Update keys
popup.UpdateKeys(key);
}
// Find Centers and Draw Bounding Rectangle
for (int i = 0; i < 3; i++)
{
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
List <Shape> shapes = new List <Shape>();
Mat draw = new Mat();
Hsv t_Lower = new Hsv(colorThresholds[i].h_Lower, colorThresholds[i].s_Lower, colorThresholds[i].v_Lower);
Hsv t_Upper = new Hsv(colorThresholds[i].h_Upper, colorThresholds[i].s_Upper, colorThresholds[i].v_Upper);
int shapeIndex = 0;
double largestArea = 0;
switch (i)
{
case 0:
coralNestImg = img.InRange(t_Lower, t_Upper).Erode(2).Dilate(2);
CvInvoke.FindContours(coralNestImg, contours, draw, Emgu.CV.CvEnum.RetrType.Ccomp, ChainApproxMethod.ChainApproxSimple);
break;
case 1:
coralOutcropImg = img.InRange(t_Lower, t_Upper).Erode(2).Dilate(2);
CvInvoke.FindContours(coralOutcropImg, contours, draw, Emgu.CV.CvEnum.RetrType.Ccomp, ChainApproxMethod.ChainApproxSimple);
break;
case 2:
starfishImg = img.InRange(t_Lower, t_Upper).Erode(2).Dilate(2);
CvInvoke.FindContours(starfishImg, contours, draw, Emgu.CV.CvEnum.RetrType.Ccomp, ChainApproxMethod.ChainApproxSimple);
break;
default:
break;
}
for (int j = 0; j < contours.Size; j++)
{
double peramiter = CvInvoke.ArcLength(contours[j], true);
VectorOfPoint positions = new VectorOfPoint();
CvInvoke.ApproxPolyDP(contours[j], positions, 0.03 * peramiter, true);
var moments = CvInvoke.Moments((contours[j]));
shapes.Add(new Shape());
//Find Centroid of shape and area and store in shape class
shapes[j].x_Center = (moments.M10 / moments.M00);
shapes[j].y_Center = (moments.M01 / moments.M00);
shapes[j].area = CvInvoke.ContourArea(contours[j]);
}
//Only compute if there are shapes on screen
if (shapes.Count > 0)
{
// find largest shape sstore it
for (int j = 0; j < shapes.Count; j++)
{
if (shapes[j].area > largestArea)
{
largestArea = shapes[j].area;
shapeIndex = j;
}
}
Rectangle boundingRect = new Rectangle((int)(shapes[shapeIndex].x_Center - 50), (int)(shapes[shapeIndex].y_Center - 50), 100, 100);
switch (i)
{
case 0:
coralNestDrawn = coralNestImg.Convert <Bgr, byte>();
coralNestDrawn.Draw(boundingRect, new Bgr(0, 0, 255), 3, LineType.EightConnected, 0);
//Add to list of shapes found
foundShape.Add(shapes[shapeIndex]);
shapeType.Add('n');
break;
case 1:
coralOutcropDrawn = coralOutcropImg.Convert <Bgr, byte>();
coralOutcropDrawn.Draw(boundingRect, new Bgr(0, 0, 255), 3, LineType.EightConnected, 0);
//Add to list of shapes found
foundShape.Add(shapes[shapeIndex]);
shapeType.Add('o');
break;
case 2:
starfishDrawn = starfishImg.Convert <Bgr, byte>();
starfishDrawn.Draw(boundingRect, new Bgr(0, 0, 255), 3, LineType.EightConnected, 0);
//Add to list of shapes found
foundShape.Add(shapes[shapeIndex]);
shapeType.Add('s');
break;
}
}
}
//Circle Detection
/* // var findEdges = img.SmoothGaussian((int)(colorThresholds[3].h_Upper)).Convert<Gray, byte>().ThresholdBinaryInv(new Gray(colorThresholds[3].s_Lower), new Gray(colorThresholds[3].s_Upper)).Erode((int)(colorThresholds[3].h_Lower)).Dilate((int)(colorThresholds[3].h_Lower));
*
* Hsv c_Lower = new Hsv(colorThresholds[3].h_Lower, colorThresholds[3].s_Lower, colorThresholds[3].v_Lower);
* Hsv c_Upper = new Hsv(colorThresholds[3].h_Upper, colorThresholds[3].s_Upper, colorThresholds[3].v_Upper);
* Image<Gray, byte> findEdges = frame.ToImage<Gray, Byte>();
* findEdges = img.InRange(c_Lower, c_Upper).Erode(2);
*
* Gray cannyThreshold = new Gray(180);
* Gray cannyThresholdLinking = new Gray(120);
* Gray circleAccumulatorThreshold = new Gray(60);
*
* CircleF[] foundCircles = findEdges.HoughCircles(
* cannyThreshold,
* circleAccumulatorThreshold,
* 4.0, //Resolution of the accumulator used to detect centers of the circles
* 4.0, //Resolution of the accumulator used to detect centers of the circles
* 10.0, //min distance
* 10, //min radius
* 30 //max radius
* )[0]; //Get the circles from the first channel
*
* drawnImage = findEdges.Convert<Bgr, Byte>();
*
*
* // Find Largest Circle and Draw it on Frame
* for (int j = 0; j < foundCircles.Length; j++)
* {
* if (j == 0)
* {
* // Skip 0 because its the largest circle at this time
* }
* else
* {
* if (foundCircles[j].Area > foundCircles[largestCircle].Area) // Check to see if this is the Largest Circle
* {
* largestCircle = j;
* }
* }
* }
* if (foundCircles.Length != 0)
* drawnImage.Draw(foundCircles[largestCircle], new Bgr(0, 255, 0), 3, LineType.EightConnected, 0); // Circle Draw
*
*/
// Grid Detection
VectorOfVectorOfPoint Contours = new VectorOfVectorOfPoint();
Mat Draw = new Mat();
Hsv g_Lower = new Hsv(colorThresholds[5].h_Lower, colorThresholds[5].s_Lower, colorThresholds[5].v_Lower);
Hsv g_Upper = new Hsv(colorThresholds[5].h_Upper, colorThresholds[5].s_Upper, colorThresholds[5].v_Upper);
gridImg = img.InRange(g_Lower, g_Upper).Erode(2).Dilate(2);
CvInvoke.FindContours(coralNestImg, Contours, Draw, Emgu.CV.CvEnum.RetrType.Ccomp, ChainApproxMethod.ChainApproxSimple);
List <Shape> gShapes = new List <Shape>();
for (int j = 0; j < Contours.Size; j++)
{
double peramiter = CvInvoke.ArcLength(Contours[j], true);
VectorOfPoint positions = new VectorOfPoint();
CvInvoke.ApproxPolyDP(Contours[j], positions, 0.03 * peramiter, true);
var moments = CvInvoke.Moments((Contours[j]));
gShapes.Add(new Shape());
//Find Centroid of shape and area and store in shape class
gShapes[j].x_Center = (moments.M10 / moments.M00);
gShapes[j].y_Center = (moments.M01 / moments.M00);
gShapes[j].area = CvInvoke.ContourArea(Contours[j]);
}
if (gShapes.Count > 0)
{
for (int i = 0; i < gShapes.Count; i++)
{
if (gShapes[i].area > 400 || gShapes[i].area < 20000)
{
gShapes.RemoveAt(i); // remove unwanted shapes
}
}
/*
* // outline grid squares found
* gridDrawn = gridImg.Convert<Bgr, byte>();
* for(int i =0;i<gShapes.Count; i++)
* {
* Rectangle boundingRect = new Rectangle((int)(gShapes[i].x_Center - 50), (int)(gShapes[i].y_Center - 50), 100, 100);
* gridDrawn.Draw(boundingRect, new Bgr(0, 0, 255), 3, LineType.EightConnected, 0);
* }
*
* for(int i = 0; i < gShapes.Count; i++)
* {
* if (LastPosition.Count == 0)
* {
* LastPosition.Add(gShapes[i]); // store shapes positions for next rotation
* start = 0;
* end = foundShape.Count;
* //check if centroids are close to those of found shapes
* for (int j = 0; j < foundShape.Count; j++)
* {
* // Check centerpoints with tolerance of +- 20
* if(((foundShape[j].x_Center < gShapes[i].x_Center + 20) && (foundShape[j].x_Center > gShapes[i].x_Center - 20)) && ((foundShape[j].y_Center < gShapes[i].y_Center + 20) && (foundShape[j].y_Center > gShapes[i].y_Center - 20)))
* {
* key[i] = shapeType[j];
* }
* }
*
* }
* else
* {
* int tEnd = 0;
* for(int j = 0; j < gShapes.Count; j++)
* {
*
* if (((LastPosition[j].x_Center < gShapes[i].x_Center + 10) && (LastPosition[j].x_Center > gShapes[i].x_Center - 10)) && ((LastPosition[j].y_Center < gShapes[i].y_Center + 10) && (LastPosition[j].y_Center > gShapes[i].y_Center - 10)))
* {
* tEnd = j;
* }
* end = tEnd;
* start = (end - foundShape.Count);
*
* }
*
* for (int j = 0; j < gShapes.Count; j++)
* {
*
* if (((foundShape[j].x_Center < gShapes[i].x_Center + 20) && (foundShape[j].x_Center > gShapes[i].x_Center - 20)) && ((foundShape[j].y_Center < gShapes[i].y_Center + 20) && (foundShape[j].y_Center > gShapes[i].y_Center - 20)))
* {
* key[i + start] = shapeType[j];
* }
*
* }
* }
* }
*/
} // Grid analysis
// Display Images
pictureBox0.Image = frame.Bitmap;
pictureBox1.Image = coralNestDrawn.Bitmap;
pictureBox2.Image = coralOutcropDrawn.Bitmap;
pictureBox3.Image = starfishDrawn.Bitmap;
pictureBox4.Image = drawnImage.Bitmap;
pictureBox5.Image = laneImg.Bitmap;
GridBox.Image = gridDrawn.Bitmap;
if (!Sleep(20))
{
this.Invoke(new Action(() => { Close(); }));
break;
}
}
}
private void contours_Click(object sender, EventArgs e)
{
if (source == null)
{
MessageBox.Show("Please open an image.");
return;
}
#region reset UI
squareNum.Text = "0";
triangleNum.Text = "0";
circleNum.Text = "0";
lineNum.Text = "0";
#endregion
try {
#region image manipulation
int sg;
int.TryParse(smoothGaussian.Text, out sg);
int lowerBound;
int.TryParse(lower.Text, out lowerBound);
int upperBound;
int.TryParse(upper.Text, out upperBound);
var temp = source.SmoothGaussian(sg).Convert <Gray, byte>().ThresholdBinary(new Gray(lowerBound), new Gray(upperBound));;
if (inverse.Checked)
{
temp = source.SmoothGaussian(sg).Convert <Gray, byte>().ThresholdBinaryInv(new Gray(lowerBound), new Gray(upperBound));
}
if (pyr.Checked)
{
CvInvoke.PyrDown(temp, temp);
CvInvoke.PyrUp(temp, temp);
}
processedImage.Image = temp.Bitmap;
#endregion
#region find contours
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
CvInvoke.FindContours(temp, contours, new Mat(), RetrType.External, ChainApproxMethod.ChainApproxSimple);
#endregion
#region guess shapes
Image <Bgr, byte> final = source.Copy();
double approxAmount;
double.TryParse(approxValue.Text, out approxAmount);
double minRatio;
double maxRatio;
double minArea;
double.TryParse(ratioValue.Text, out minRatio);
double.TryParse(marea.Text, out minArea);
maxRatio = 1 / minRatio;
double bx;
double.TryParse(bounding.Text, out bx);
for (int i = 0; i < contours.Size; i++)
{
var contour = contours[i];
double perimeter = CvInvoke.ArcLength(contour, true);
VectorOfPoint approx = new VectorOfPoint();
CvInvoke.ApproxPolyDP(contour, approx, approxAmount * perimeter, true);
CvInvoke.DrawContours(final, contours, i, new MCvScalar(0, 0, 255), 1);
Rectangle bounds = CvInvoke.BoundingRectangle(contour);
final.Draw(bounds, new Bgr(255, 0, 0));
finalImage.Image = final.Bitmap;
double area = CvInvoke.ContourArea(contour);
if (!(bounds.X > bx && bounds.X < final.Width - bx))
{
if (messages.Checked)
{
MessageBox.Show("Not in bounds");
}
continue;
}
if (!(bounds.Y > bx && bounds.Y < final.Height - bx))
{
if (messages.Checked)
{
MessageBox.Show("Not in bounds");
}
continue;
}
if (area < minArea)
{
if (messages.Checked)
{
MessageBox.Show("Not large enough");
}
continue;
}
if (approx.Size == 3)
{
int current;
int.TryParse(triangleNum.Text, out current);
current += 1;
triangleNum.Text = current.ToString();
}
else if (approx.Size == 4)
{
Point[] test = approx.ToArray();
Point a = test[0];
Point b = test[1];
Point c = test[2];
double width = Math.Sqrt((((double)(a.X - b.X)) * ((double)(a.X - b.X))) + (((double)(a.Y - b.Y)) * ((double)(a.Y - b.Y))));
double height = Math.Sqrt((((double)(c.X - b.X)) * ((double)(c.X - b.X))) + (((double)(c.Y - b.Y)) * ((double)(c.Y - b.Y))));
double ratio = width / height;
int current;
if (ratio > minRatio && ratio < maxRatio)
{
int.TryParse(squareNum.Text, out current);
current += 1;
squareNum.Text = current.ToString();
}
else
{
int.TryParse(lineNum.Text, out current);
current += 1;
lineNum.Text = current.ToString();
}
}
else
{
int current;
int.TryParse(circleNum.Text, out current);
current += 1;
circleNum.Text = current.ToString();
}
if (messages.Checked)
{
MessageBox.Show("Current shape: " + approx.Size.ToString());
}
}
#endregion
} catch (Exception exception) {
MessageBox.Show(exception.Message);
}
}
/// <summary>
/// Поиск знака. Метод Кенни (поиск по границам)
/// </summary>
/// <param name="img">Исходное изображение</param>
/// <param name="brickSingList">Список знаков на изображении</param>
/// <param name="boxList">Список областей со знаком</param>
/// <param name="contours">Контур</param>
/// <param name="hierachy"></param>
/// <param name="idx"></param>
private void FindBrickSing(Mat img, List <Mat> brickSingList, List <Rectangle> boxList, VectorOfVectorOfPoint contours, int[,] hierachy, int idx)
{
for (; idx >= 0; idx = hierachy[idx, 0])
{
using (VectorOfPoint c = contours[idx])
using (VectorOfPoint approx = new VectorOfPoint())
{
CvInvoke.ApproxPolyDP(c, approx, CvInvoke.ArcLength(c, true) * 0.02, true);
double area = CvInvoke.ContourArea(approx);
if (area > 200)
{
double ratio = CvInvoke.MatchShapes(_octagon, approx, ContoursMatchType.I3);
if (ratio > 0.1) //Подходящих совпадений не найдено
{
if (hierachy[idx, 2] >= 0)
{
FindBrickSing(img, brickSingList, boxList, contours, hierachy, hierachy[idx, 2]);
}
continue;
}
Rectangle box = CvInvoke.BoundingRectangle(c);
Mat candidate = new Mat();
//Поиск кандидата на искомое вхождение
using (Mat tmp = new Mat(img, box))
{
CvInvoke.CvtColor(tmp, candidate, ColorConversion.Bgr2Gray);
}
//Устанавливаем значение пикселей вне контура равным нулю
using (Mat mask = new Mat(candidate.Size.Height, candidate.Width, DepthType.Cv8U, 1))
{
mask.SetTo(new MCvScalar(0));
CvInvoke.DrawContours(mask, contours, idx, new MCvScalar(255), -1, LineType.EightConnected, null, int.MaxValue, new Point(-box.X, -box.Y));
double mean = CvInvoke.Mean(candidate, mask).V0;
CvInvoke.Threshold(candidate, candidate, mean, 255, ThresholdType.Binary);
CvInvoke.BitwiseNot(candidate, candidate);
CvInvoke.BitwiseNot(mask, mask);
candidate.SetTo(new MCvScalar(0), mask);
}
int minMatchCount = 0;
double uniquenessThreshold = 0.0;
VectorOfKeyPoint observaredKeyPoint = new VectorOfKeyPoint();
Mat observeredDescriptor = new Mat();
_detector.DetectAndCompute(candidate, null, observaredKeyPoint, observeredDescriptor, false);
//Обозначаем искомое вхождение
if (observaredKeyPoint.Size >= minMatchCount)
{
int i = 2;
Mat mask;
using (VectorOfVectorOfDMatch matches = new VectorOfVectorOfDMatch())
{
_modelDescriptorMatcher.KnnMatch(observeredDescriptor, matches, i, null);
mask = new Mat(matches.Size, 1, DepthType.Cv8U, 1);
Features2DToolbox.VoteForUniqueness(matches, uniquenessThreshold, mask);
}
int nonZeroCount = CvInvoke.CountNonZero(mask);
if (nonZeroCount >= minMatchCount)
{
boxList.Add(box);
brickSingList.Add(candidate);
}
}
}
}
}
}
public List <CircleF> HoughCircles(Image <Bgr, byte> EyeRoi, // Input image
int minRadius, // Circle Radius
int maxRadius,
double dp = 0.1, // Resolution of the accumulator used to detect centers of the circles
double minDist = 0.01, //min detected circles distance
double CannyThres = 80, // Canny high threshold
double HoughThres = 80 // Hough counting threshold
)
{
//轉灰階
img_Gray = EyeRoi.Convert <Gray, Byte>();
img_Gray._GammaCorrect(0.6);
img_Bgr = EyeRoi.Clone();
// Laplace 邊緣強化
img_laplace = img_Gray.Convert <Gray, float>();
//Convert to 8-bit image
Point[] minLoc, maxLoc;
double[] mins, maxs;
img_laplace.MinMax(out mins, out maxs, out minLoc, out maxLoc);
img_laplaceByte = img_laplace.ConvertScale <byte>(255 / maxs[0], 0);
img_Sobel = img_laplaceByte.Convert <Gray, float>();
img_SobelX = img_laplaceByte.Sobel(1, 0, 3);
img_SobelY = img_laplaceByte.Sobel(0, 1, 3);
img_SobelX = img_SobelX.AbsDiff(new Gray(0));
img_SobelY = img_SobelY.AbsDiff(new Gray(0));
img_Sobel = img_SobelX + img_SobelY;
//Find sobel min or max value
//Find sobel min or max value position
img_Sobel.MinMax(out mins, out maxs, out minLoc, out maxLoc);
//Conversion to 8-bit image
sobelImage = img_Sobel.ConvertScale <byte>(255 / maxs[0], 0);
//Adaptive Threshold
img_Ada = img_Gray.Clone();
CvInvoke.AdaptiveThreshold(img_laplaceByte, img_Ada, 255, AdaptiveThresholdType.GaussianC, ThresholdType.Binary, 7, 0);
img_Threshold = img_Ada.Clone();
//Median Filter
CvInvoke.MedianBlur(img_Threshold, img_Threshold, 3);
// Canny
img_Edge = img_Gray.CopyBlank();
img_Edge = img_Threshold.Canny(30, 90);
VectorOfVectorOfPoint Contours = new VectorOfVectorOfPoint();
List <VectorOfPoint> C = new List <VectorOfPoint>();
CvInvoke.FindContours(img_Edge, Contours, null, RetrType.External, ChainApproxMethod.ChainApproxNone);
img_Edge = img_Gray.CopyBlank();
img_EdgeText = EyeRoi.CopyBlank();
double maxLen = 0;
int Inx = 0;
if (Contours.Size > 0)
{
for (int i = 0; i < Contours.Size; i++)
{
double len = CvInvoke.ArcLength(Contours[i], true);
if (len > maxLen)
{
maxLen = len;
Inx = i;
}
CvInvoke.DrawContours(img_Edge, Contours, i, new MCvScalar(255, 255, 255), 1, LineType.EightConnected, null);
CvInvoke.DrawContours(img_EdgeText, Contours, i, new MCvScalar(255, 255, 255), 1, LineType.EightConnected, null);
Rectangle rect = CvInvoke.BoundingRectangle(Contours[i]);
CvInvoke.PutText(img_EdgeText, len.ToString("###.#"), new Point(rect.X, rect.Y + rect.Height), Emgu.CV.CvEnum.FontFace.HersheyDuplex, 0.2, new Bgr(Color.Red).MCvScalar);
C.Add(Contours[i]);
}
try
{
do
{
Circles = CvInvoke.HoughCircles(img_Edge, // Input image
HoughType.Gradient, // Method
dp, //Resolution of the accumulator used to detect centers of the circles
minDist, //min distance
CannyThres, // Canny high threshold
HoughThres, // Hough counting threshold
minRadius, //min radius
maxRadius //max radius
);
list_Iris = new List <CircleF>();
HoughThres -= 5;
if (HoughThres <= 0)
{
Console.WriteLine("cythred=0");
//Only save the first 30th Circles
int limit = 0;
foreach (CircleF cy in Circles)
{
list_Iris.Add(cy);
limit++;
if (limit == 60 || limit > Circles.Length)
{
break;
}
}
}
} while (list_Iris.Count <= 5);
}
catch (Emgu.CV.Util.CvException ex) { Console.WriteLine(ex); }
// by gradient
list_Iris = CircleVerify(list_Iris);
}
else
{
MessageBox.Show("無法偵測瞳孔，請重新拍攝 \r\n (Contours.size = 0)");
return(null);
}
if (list_Iris.Count != 0)
{
this.iris = list_Iris[0];
}
return(list_Iris);
}
private void HandleGrab(object sender, EventArgs e)
{
Mat image = new Mat();
if (capture.IsOpened)
{
capture.Retrieve(image);
}
if (image.IsEmpty)
{
return;
}
Mat grayImg = image.Clone();
CvInvoke.CvtColor(image, grayImg, ColorConversion.Bgr2Gray);
CvInvoke.AdaptiveThreshold(grayImg, grayImg, 255, AdaptiveThresholdType.MeanC, ThresholdType.BinaryInv, 21, 11);
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
VectorOfPoint approx = new VectorOfPoint();
VectorOfVectorOfPoint candidates = new VectorOfVectorOfPoint();
Mat hierarchy = new Mat();
CvInvoke.FindContours(grayImg, contours, hierarchy, RetrType.List, ChainApproxMethod.ChainApproxSimple);
for (int i = 0; i < contours.Size; i++)
{
CvInvoke.ApproxPolyDP(contours[i], approx, CvInvoke.ArcLength(contours[i], true) * 0.05, true);
if (approx.Size == 4)
{
if (CvInvoke.ContourArea(contours[i]) > 300)
{
var rect = CvInvoke.BoundingRectangle(approx);
if (rect.Height > 0.95 * rect.Width || rect.Height < 0.95 * rect.Width)
{
candidates.Push(approx);
CvInvoke.DrawContours(image, contours, i, new MCvScalar(0, 0, 255), 4);
CvInvoke.Rectangle(image, rect, new MCvScalar(0, 255, 0), 3);
}
}
}
}
for (int i = 0; i < candidates.Size; i++)
{
System.Drawing.PointF[] pts = new System.Drawing.PointF[4];
pts[0] = new System.Drawing.PointF(0, 0);
pts[1] = new System.Drawing.PointF(64 - 1, 0);
pts[2] = new System.Drawing.PointF(64 - 1, 64 - 1);
pts[3] = new System.Drawing.PointF(0, 64 - 1);
VectorOfPointF perfect = new VectorOfPointF(pts);
System.Drawing.PointF[] sample_pts = new System.Drawing.PointF[4];
for (int j = 0; j < 4; j++)
{
sample_pts[j] = new System.Drawing.PointF(candidates[i][j].X, candidates[i][j].Y);
}
VectorOfPointF sample = new VectorOfPointF(sample_pts);
var tf = CvInvoke.GetPerspectiveTransform(sample, perfect);
Mat warped = new Mat();
CvInvoke.WarpPerspective(image, warped, tf, new System.Drawing.Size(64, 64));
CvInvoke.Imshow("Warped " + i, warped);
}
CvInvoke.Imshow("Original", image);
CvInvoke.Imshow("Gray", grayImg);
}
public List <List <string> > GetComments(string namePDF, Mat _frame)
{
List <List <string> > comments = new List <List <string> >();
List <String> aux_comments = new List <string>();
Image <Bgr, byte> imagen_aux = _frame.ToImage <Bgr, byte>();
imagen_aux = imagen_aux.Rotate(180, new Bgr(0, 0, 0));
Mat m = new Mat();
Mat n = new Mat();
Mat o = new Mat();
Mat aux = new Mat();
Mat binaryDiffFrame = new Mat();
Mat denoisedDiffFrame = new Mat();
Mat finalFrame = new Mat();
//Obtener directorio
directorio = Directory.GetCurrentDirectory();
Console.WriteLine(directorio);
//Cantidad de comentarios
cantComentarios = 0;
//
//OBTENER COLOR
//
Image <Bgr, Byte> imge = _frame.ToImage <Bgr, Byte>();
Image <Bgr, byte> ret = imge.Copy();
Image <Bgr, byte> auxImge = imge.Copy();
Image <Bgr, byte> auxImge2 = imge.Copy();
Image <Bgr, byte> auxImge3 = imge.Copy();
Image <Bgr, byte> resultadoFinal = imge.Copy();
//Transformar a espacio de color HSV
Image <Hsv, Byte> hsvimg = auxImge.Convert <Hsv, Byte>();
//extract the hue and value channels
Image <Gray, Byte>[] channels = hsvimg.Split(); //separar en componentes
Image <Gray, Byte> imghue = channels[0]; //hsv, channels[0] es hue.
Image <Gray, Byte> imgval = channels[2]; //hsv, channels[2] es value.
//Filtro amarillo
//140 en adelante //30
Image <Gray, byte> huefilter = imghue.InRange(new Gray(0), new Gray(30));
//Filtro colores menos brillantes
Image <Gray, byte> valfilter = imgval.InRange(new Gray(100), new Gray(255));
//Filtro de saturación - quitar blancos
channels[1]._ThresholdBinary(new Gray(10), new Gray(255)); // Saturacion
//Unir los filtros para obtener la imagen
Image <Gray, byte> colordetimg = huefilter.And(valfilter).And(channels[1]);//aqui habia un Not()
//Colorear imagen
var mat = auxImge2.Mat;
mat.SetTo(new MCvScalar(0, 0, 255), colordetimg);
mat.CopyTo(ret);
//Image<Bgr, byte> imgout = ret.CopyBlank();//imagen sin fondo negro
ret._Or(auxImge2);
//Muestra imagen con color destacado
Mat SE2 = CvInvoke.GetStructuringElement(Emgu.CV.CvEnum.ElementShape.Rectangle, new Size(3, 2), new Point(-1, -1));
CvInvoke.MorphologyEx(colordetimg, colordetimg, MorphOp.Erode, SE2, new Point(-1, -1), 3, BorderType.Default, new MCvScalar(255));
Mat SE3 = CvInvoke.GetStructuringElement(Emgu.CV.CvEnum.ElementShape.Rectangle, new Size(3, 2), new Point(-1, -1));
CvInvoke.MorphologyEx(colordetimg, colordetimg, MorphOp.Dilate, SE3, new Point(-1, -1), 4, BorderType.Default, new MCvScalar(255));
Mat SE = CvInvoke.GetStructuringElement(Emgu.CV.CvEnum.ElementShape.Rectangle, new Size(3, 3), new Point(-1, -1));
CvInvoke.MorphologyEx(colordetimg, aux, Emgu.CV.CvEnum.MorphOp.Close, SE, new Point(-1, -1), 5, Emgu.CV.CvEnum.BorderType.Reflect, new MCvScalar(255));
Image <Bgr, byte> temp = aux.ToImage <Bgr, byte>();
var temp2 = temp.SmoothGaussian(5).Convert <Gray, byte>().ThresholdBinary(new Gray(230), new Gray(255));
VectorOfVectorOfPoint contorno = new VectorOfVectorOfPoint();
Mat matAux = new Mat();
CvInvoke.FindContours(temp2, contorno, matAux, Emgu.CV.CvEnum.RetrType.External, Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple);
for (int i = 0; i < contorno.Size; i++)
{
VectorOfPoint approxContour = new VectorOfPoint();
double perimetro = CvInvoke.ArcLength(contorno[i], true);
VectorOfPoint approx = new VectorOfPoint();
double area = CvInvoke.ContourArea(contorno[i]);
if (area > 15000)
{
var moments = CvInvoke.Moments(contorno[i]);
int x = (int)(moments.M10 / moments.M00);
int y = (int)(moments.M01 / moments.M00);
CvInvoke.ApproxPolyDP(contorno[i], approx, 0.04 * perimetro, true);
if (approx.Size == 4) //The contour has 4 vertices.
{
cantComentarios = cantComentarios + 1;
CvInvoke.DrawContours(resultadoFinal, contorno, i, new MCvScalar(0, 255, 255), 2);
RotatedRect rectangle = CvInvoke.MinAreaRect(approx);
//CvInvoke.DrawContours(resultadoFinal, contorno, i, new MCvScalar(255, 255, 255), 2, LineType.AntiAlias);
resultadoFinal.Draw(rectangle, new Bgr(Color.Cyan), 1);
CvInvoke.PutText(resultadoFinal, "Comentario", new Point(x, y),
Emgu.CV.CvEnum.FontFace.HersheySimplex, 0.5, new MCvScalar(0, 255, 255), 2);
System.Drawing.Point[] pts = approx.ToArray();
System.Drawing.Rectangle box = new System.Drawing.Rectangle();
box = CvInvoke.BoundingRectangle(approx);
coorComentario.Add(new Point(box.X, box.Y));
auxImge3.ROI = box;
final = auxImge3.Copy();
//Bitmap src = bmp;
final = final.Rotate(180, new Bgr(0, 0, 0));
final.Save("comment" + cantComentarios + ".jpg");
Image <Gray, Byte> finalGray = final.Convert <Gray, Byte>();
CvInvoke.cvResetImageROI(auxImge3);
//El parámetro blockSize es el tamaño de la vecindad, y el valor de los píxeles procesados debe ser mayor que el valor de vecindad promedio menos param1
CvInvoke.AdaptiveThreshold(finalGray, finalGray, 255, AdaptiveThresholdType.MeanC, ThresholdType.Binary, 31, 20);
}
}
}
Console.WriteLine("cantidad de comentarios " + cantComentarios);
if (cantComentarios > 0)
{
aux_comments.Add("SI");
comments.Add(aux_comments);
SaveComments(namePDF);
}
else
{
aux_comments.Add("NO");
comments.Add(aux_comments);
}
return(comments);
}
/// <summary>
/// Determina si un contorno es un circulo, verificando que tenga al menos 7 puntos y todos estén al mismo radio del centro
/// </summary>
/// <param name="MaxVariation"> Máxima desviacion permitida (0 a 1) </param>
/// <returns></returns>
public static bool isCircle(this VectorOfPoint contour, float MaxVariation = 0.2f)
{
bool result = false;
if (contour.Size >= 7)
{
Moments Moments = CvInvoke.Moments(contour);
Vector2 Center = Vector2.zero;
Center.x = (float)(Moments.M10 / Moments.M00);
Center.y = (float)(Moments.M01 / Moments.M00);
result = true;
Vector2[] pts = contour.ToVector2();
float MaxRadius = (pts[0] - Center).magnitude;
float MinRadius = MaxRadius;
float MinLimit = 1 - MaxVariation;
float MaxLimit = 1 + MaxVariation;
//Verifica que el radio sea consistente
for (int j = 1; j < pts.Length; j++)
{
float r = (pts[j] - Center).magnitude;
if (r > MaxRadius)
{
MaxRadius = r;
}
if (r < MinRadius)
{
MinRadius = r;
}
}
if (MinRadius / MaxRadius < MinLimit)
{
result = false;
}
//Verifica que el perímetro sea consistente
if (result)
{
double perimetroReal = CvInvoke.ArcLength(contour, true);
float Radio = (MaxRadius + MinRadius) * 0.5f;
float perimetroIdeal = 6.28f * Radio;
float factor = (float)(perimetroIdeal / perimetroReal);
if ((factor < MinLimit) || (factor > MaxLimit))
{
result = false;
}
}
pts = null;
}
return(result);
}
private MovesDetectionResult DetectMoves(CamService cam)
{
var maxDartContourArc = configService.MaxContourArcValue * 1.5;
var maxDartContourArea = configService.MaxContourAreaValue * 1.5;
var maxDartContourWidth = configService.MaxContourWidthValue * 1.5;
var minDartContourArc = configService.MinContourArcValue;
var minDartContourArea = configService.MinContourAreaValue;
var minDartContourWidth = configService.MinContourWidthValue;
var allContours = new VectorOfVectorOfPoint();
CvInvoke.FindContours(cam.ThrowExtractedRoiFrame,
allContours,
new Mat(),
RetrType.External,
ChainApproxMethod.ChainApproxNone);
if (!detectionEnabled || allContours.Size == 0)
{
return(MovesDetectionResult.Nothing);
}
var contourWithMaxArc = new VectorOfPoint();
var contourWithMaxArea = new VectorOfPoint();
var contourWithMaxWidth = new VectorOfPoint();
var maxArс = 0.0;
var maxArea = 0.0;
var maxWidth = 0.0;
for (var i = 0; i < allContours.Size; i++)
{
var tempContour = allContours[i];
var tempContourArс = CvInvoke.ArcLength(tempContour, true);
if (tempContourArс > maxArс)
{
maxArс = tempContourArс;
contourWithMaxArc = tempContour;
}
var tempContourArea = CvInvoke.ContourArea(tempContour);
if (tempContourArea > maxArea)
{
maxArea = tempContourArea;
contourWithMaxArea = tempContour;
}
var rect = CvInvoke.MinAreaRect(tempContour);
var box = CvInvoke.BoxPoints(rect);
var contourBoxPoint1 = new PointF(box[0].X, (float)cam.roiPosYSlider + box[0].Y);
var contourBoxPoint2 = new PointF(box[1].X, (float)cam.roiPosYSlider + box[1].Y);
var contourBoxPoint4 = new PointF(box[3].X, (float)cam.roiPosYSlider + box[3].Y);
var side1 = MeasureService.FindDistance(contourBoxPoint1, contourBoxPoint2);
var side2 = MeasureService.FindDistance(contourBoxPoint4, contourBoxPoint1);
var tempContourWidth = side1 < side2
? side1
: side2;
if (tempContourWidth > maxWidth)
{
maxWidth = tempContourWidth;
contourWithMaxWidth = tempContour;
}
}
if (workingMode == DetectionServiceWorkingMode.Crossing ||
maxArс >= minDartContourArc &&
maxArс <= maxDartContourArc &&
maxArea >= minDartContourArea &&
maxArea <= maxDartContourArea &&
maxWidth >= minDartContourWidth &&
maxWidth <= maxDartContourWidth &&
contourWithMaxArc.Equals(contourWithMaxArea) &&
contourWithMaxArea.Equals(contourWithMaxWidth) &&
contourWithMaxWidth.Equals(contourWithMaxArc)
)
{
return(MovesDetectionResult.Throw);
}
if (maxArс > maxDartContourArc ||
maxArea > maxDartContourArea ||
maxWidth > maxDartContourWidth)
{
return(MovesDetectionResult.Extraction);
}
return(MovesDetectionResult.Nothing);
}
private void DetectObject(Mat detectionFrame, Mat displayFrame, Rectangle box)
{
Image <Bgr, Byte> buffer_im = displayFrame.ToImage <Bgr, Byte>();
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
VectorOfPoint biggestContour = null;
IOutputArray hirarchy = null;
CvInvoke.FindContours(detectionFrame, contours, hirarchy, RetrType.List, ChainApproxMethod.ChainApproxSimple);
if (contours.Size > 0)
{
double maxArea = 0;
int chosen = 0;
VectorOfPoint contour = null;
for (int i = 0; i < contours.Size; i++)
{
contour = contours[i];
double area = CvInvoke.ContourArea(contour);
if (area > maxArea)
{
maxArea = area;
chosen = i;
}
}
//MarkDetectedObject(displayFrame, contours[chosen], maxArea);//dibuja una envoltura roja
VectorOfPoint hullPoints = new VectorOfPoint();
VectorOfInt hullInt = new VectorOfInt();
CvInvoke.ConvexHull(contours[chosen], hullPoints, true);
CvInvoke.ConvexHull(contours[chosen], hullInt, false);
Mat defects = new Mat();
if (hullInt.Size > 3)
{
CvInvoke.ConvexityDefects(contours[chosen], hullInt, defects);
}
box = CvInvoke.BoundingRectangle(hullPoints);
CvInvoke.Rectangle(displayFrame, box, drawingColor); //Box rectangulo que encierra el area mas grande
// cropbox = crop_color_frame(displayFrame, box);
buffer_im.ROI = box;
Image <Bgr, Byte> cropped_im = buffer_im.Copy();
pictureBox8.Image = cropped_im.Bitmap;
Point center = new Point(box.X + box.Width / 2, box.Y + box.Height / 2);//centro rectangulo MOUSE
VectorOfPoint start_points = new VectorOfPoint();
VectorOfPoint far_points = new VectorOfPoint();
if (!defects.IsEmpty)
{
Matrix <int> m = new Matrix <int>(defects.Rows, defects.Cols,
defects.NumberOfChannels);
defects.CopyTo(m);
int xe = 2000, ye = 2000;
int xs = 2000, ys = 2000;
int xer = 2000, yer = 2000;
int xsr = 2000, ysr = 2000;
int xem = 0, yem = 0;
int xsm = 0, ysm = 0;
int xez = 0, yez = 0;
int xsz = 0, ysz = 0;
int y = 0, x = 0;
int ym = 0, xm = 0;
int yr = 0, xr = 0;
int yz = 0, xz = 0;
for (int i = 0; i < m.Rows; i++)
{
int startIdx = m.Data[i, 0];
int endIdx = m.Data[i, 1];
int farIdx = m.Data[i, 2];
Point startPoint = contours[chosen][startIdx];
Point endPoint = contours[chosen][endIdx];
Point farPoint = contours[chosen][farIdx];
CvInvoke.Circle(displayFrame, endPoint, 3, new MCvScalar(0, 255, 255));
CvInvoke.Circle(displayFrame, startPoint, 3, new MCvScalar(255, 255, 0));
if (true)
{
if (endPoint.Y < ye)
{
xe = endPoint.X;
ye = endPoint.Y;
}
if (startPoint.Y < ys)
{
xs = startPoint.X;
ys = startPoint.Y;
}
if (ye < ys)
{
y = ye;
x = xe;
}
else
{
y = ys;
x = xs;
}
if (endPoint.Y > yem)
{
xem = endPoint.X;
yem = endPoint.Y;
}
if (startPoint.Y > ysm)
{
xsm = startPoint.X;
ysm = startPoint.Y;
}
if (yem > ysm)
{
ym = yem;
xm = xem;
}
else
{
y = ys;
x = xs;
}
if (endPoint.X < xer)
{
xer = endPoint.X;
yer = endPoint.Y;
}
if (startPoint.X < xsr)
{
xsr = startPoint.X;
ysr = startPoint.Y;
}
if (xer < xsr)
{
yr = yer;
xr = xer;
}
else
{
yr = ysr;
xr = xsr;
}
if (endPoint.X > xez)
{
xez = endPoint.X;
yez = endPoint.Y;
}
if (startPoint.X > xsz)
{
xsz = startPoint.X;
ysz = startPoint.Y;
}
if (xez > xsz)
{
yz = yez;
xz = xez;
}
else
{
yz = ysz;
xz = xsz;
}
}
/*var info = new string[] {
*
* $"Posicion: {endPoint.X}, {endPoint.Y}"
* };
*
* WriteMultilineText(displayFrame, info, new Point(endPoint.X + 5, endPoint.Y));*/
double distance = Math.Round(Math.Sqrt(Math.Pow((center.X - farPoint.X), 2) + Math.Pow((center.Y - farPoint.Y), 2)), 1);
if (distance < box.Height * 0.3)
{
CvInvoke.Circle(displayFrame, farPoint, 3, new MCvScalar(255, 0, 0));
}
CvInvoke.Line(displayFrame, startPoint, endPoint, new MCvScalar(0, 255, 0));
// CvInvoke.Line(displayFrame, startPoint, farPoint, new MCvScalar(0, 255, 255));
}
var infoe = new string[] { $"Punto", $"Posicion: {x}, {y}" };
var infos = new string[] { $"Punto", $"Posicion: {xm}, {ym}" };
var infor = new string[] { $"Punto", $"Posicion: {x}, {y}" };
var infoz = new string[] { $"Punto", $"Posicion: {xm}, {ym}" };
var infoCentro = new string[] { $"Centro", $"Posicion: {xm}, {ym}" };
var xCentro = (x + xm + xr + xz) / 4;
var yCentro = (y + ym + yr + yz) / 4;
WriteMultilineText(displayFrame, infoe, new Point(x + 30, y));
CvInvoke.Circle(displayFrame, new Point(x, y), 5, new MCvScalar(255, 0, 255), 2);
Image <Bgr, byte> temp = detectionFrame.ToImage <Bgr, byte>();
var temp2 = temp.SmoothGaussian(5).Convert <Gray, byte>().ThresholdBinary(new Gray(230), new Gray(255));
VectorOfVectorOfPoint contorno = new VectorOfVectorOfPoint();
Mat mat = new Mat();
CvInvoke.FindContours(temp2, contorno, mat, Emgu.CV.CvEnum.RetrType.External, Emgu.CV.CvEnum.ChainApproxMethod.LinkRuns);
for (int i = 0; i < contorno.Size; i++)
{
double perimetro = CvInvoke.ArcLength(contorno[i], true);
VectorOfPoint approx = new VectorOfPoint();
CvInvoke.ApproxPolyDP(contorno[i], approx, 0.04 * perimetro, true);
CvInvoke.DrawContours(displayFrame, contorno, i, new MCvScalar(0, 255, 255), 2);
}
WriteMultilineText(displayFrame, infos, new Point(xm + 30, ym));
CvInvoke.Circle(displayFrame, new Point(xm, ym), 5, new MCvScalar(255, 0, 255), 2);
WriteMultilineText(displayFrame, infor, new Point(xr + 30, yr));
CvInvoke.Circle(displayFrame, new Point(xr, yr), 5, new MCvScalar(255, 0, 255), 2);
WriteMultilineText(displayFrame, infoz, new Point(xz + 30, yz));
CvInvoke.Circle(displayFrame, new Point(xz, yz), 5, new MCvScalar(255, 0, 255), 2);
WriteMultilineText(displayFrame, infoz, new Point(xCentro + 30, yCentro));
CvInvoke.Circle(displayFrame, new Point(xCentro, yCentro), 2, new MCvScalar(0, 100, 0), 4);
//CvInvoke.Circle(picture, new Point(x * 2, y * 4), 20, new MCvScalar(255, 0, 255), 2);*/
}
}
}
}
public Mat ProcessImage(Mat img)
{
using (UMat gray = new UMat())
using (UMat cannyEdges = new UMat())
using (Mat triangleRectangleImage = new Mat(img.Size, DepthType.Cv8U, 3)) //image to draw triangles and rectangles on
using (Mat circleImage = new Mat(img.Size, DepthType.Cv8U, 3)) //image to draw circles on
using (Mat lineImage = new Mat(img.Size, DepthType.Cv8U, 3)) //image to drtaw lines on
{
//Convert the image to grayscale and filter out the noise
CvInvoke.CvtColor(img, gray, ColorConversion.Bgr2Gray);
//Remove noise
CvInvoke.GaussianBlur(gray, gray, new Size(3, 3), 1);
#region circle detection
double cannyThreshold = 180.0;
double circleAccumulatorThreshold = 120;
CircleF[] circles = CvInvoke.HoughCircles(gray, HoughModes.Gradient, 2.0, 20.0, cannyThreshold,
circleAccumulatorThreshold, 5);
#endregion
#region Canny and edge detection
double cannyThresholdLinking = 120.0;
CvInvoke.Canny(gray, cannyEdges, cannyThreshold, cannyThresholdLinking);
LineSegment2D[] lines = CvInvoke.HoughLinesP(
cannyEdges,
1, //Distance resolution in pixel-related units
Math.PI / 45.0, //Angle resolution measured in radians.
20, //threshold
30, //min Line width
10); //gap between lines
#endregion
#region Find triangles and rectangles
List <Triangle2DF> triangleList = new List <Triangle2DF>();
List <RotatedRect> boxList = new List <RotatedRect>(); //a box is a rotated rectangle
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.FindContours(cannyEdges, contours, null, RetrType.List,
ChainApproxMethod.ChainApproxSimple);
int count = contours.Size;
for (int i = 0; i < count; i++)
{
using (VectorOfPoint contour = contours[i])
using (VectorOfPoint approxContour = new VectorOfPoint())
{
CvInvoke.ApproxPolyDP(contour, approxContour, CvInvoke.ArcLength(contour, true) * 0.05,
true);
if (CvInvoke.ContourArea(approxContour, false) > 250
) //only consider contours with area greater than 250
{
if (approxContour.Size == 3) //The contour has 3 vertices, it is a triangle
{
Point[] pts = approxContour.ToArray();
triangleList.Add(new Triangle2DF(
pts[0],
pts[1],
pts[2]
));
}
else if (approxContour.Size == 4) //The contour has 4 vertices.
{
#region determine if all the angles in the contour are within [80, 100] degree
bool isRectangle = true;
Point[] pts = approxContour.ToArray();
LineSegment2D[] edges = PointCollection.PolyLine(pts, true);
for (int j = 0; j < edges.Length; j++)
{
double angle = Math.Abs(
edges[(j + 1) % edges.Length].GetExteriorAngleDegree(edges[j]));
if (angle < 80 || angle > 100)
{
isRectangle = false;
break;
}
}
#endregion
if (isRectangle)
{
boxList.Add(CvInvoke.MinAreaRect(approxContour));
}
}
}
}
}
}
#endregion
#region draw triangles and rectangles
triangleRectangleImage.SetTo(new MCvScalar(0));
foreach (Triangle2DF triangle in triangleList)
{
CvInvoke.Polylines(triangleRectangleImage, Array.ConvertAll(triangle.GetVertices(), Point.Round),
true, new Bgr(Color.DarkBlue).MCvScalar, 2);
}
foreach (RotatedRect box in boxList)
{
CvInvoke.Polylines(triangleRectangleImage, Array.ConvertAll(box.GetVertices(), Point.Round), true,
new Bgr(Color.DarkOrange).MCvScalar, 2);
}
//Drawing a light gray frame around the image
CvInvoke.Rectangle(triangleRectangleImage,
new Rectangle(Point.Empty,
new Size(triangleRectangleImage.Width - 1, triangleRectangleImage.Height - 1)),
new MCvScalar(120, 120, 120));
//Draw the labels
CvInvoke.PutText(triangleRectangleImage, "Triangles and Rectangles", new Point(20, 20),
FontFace.HersheyDuplex, 0.5, new MCvScalar(120, 120, 120));
#endregion
#region draw circles
circleImage.SetTo(new MCvScalar(0));
foreach (CircleF circle in circles)
{
CvInvoke.Circle(circleImage, Point.Round(circle.Center), (int)circle.Radius,
new Bgr(Color.Brown).MCvScalar, 2);
}
//Drawing a light gray frame around the image
CvInvoke.Rectangle(circleImage,
new Rectangle(Point.Empty, new Size(circleImage.Width - 1, circleImage.Height - 1)),
new MCvScalar(120, 120, 120));
//Draw the labels
CvInvoke.PutText(circleImage, "Circles", new Point(20, 20), FontFace.HersheyDuplex, 0.5,
new MCvScalar(120, 120, 120));
#endregion
#region draw lines
lineImage.SetTo(new MCvScalar(0));
foreach (LineSegment2D line in lines)
{
CvInvoke.Line(lineImage, line.P1, line.P2, new Bgr(Color.Green).MCvScalar, 2);
}
//Drawing a light gray frame around the image
CvInvoke.Rectangle(lineImage,
new Rectangle(Point.Empty, new Size(lineImage.Width - 1, lineImage.Height - 1)),
new MCvScalar(120, 120, 120));
//Draw the labels
CvInvoke.PutText(lineImage, "Lines", new Point(20, 20), FontFace.HersheyDuplex, 0.5,
new MCvScalar(120, 120, 120));
#endregion
Mat result = new Mat();
CvInvoke.VConcat(new Mat[] { img, triangleRectangleImage, circleImage, lineImage }, result);
return(result);
}
}
private void wykryjZnaki()
{
//lista trójkątów
List <Triangle2DF> triangleList = new List <Triangle2DF>();
//lista prostokątów i kwadratów
List <RotatedRect> boxList = new List <RotatedRect>();
zwiekszProgressBar(1);
//przetworzenie zdjecia do postaci wskazujacej tylko biale kontury na czarnym tle
Image <Gray, byte> canny_zdj = new Image <Gray, byte>(imgInput.Width, imgInput.Height, new Gray(0));
canny_zdj = imgInput.Canny(300, 250);
//przypisanie canny_zdj do pictureBox i rozciagniecie
zdjecieCannyBox.Image = canny_zdj.Bitmap;
zdjecieCannyBox.SizeMode = PictureBoxSizeMode.StretchImage;
zwiekszProgressBar(2);
LineSegment2D[] lines = CvInvoke.HoughLinesP(
canny_zdj,
1,
Math.PI / 45.0,
20,
30,
10);
Image <Gray, byte> imgOut = canny_zdj.Convert <Gray, byte>().ThresholdBinary(new Gray(50), new Gray(200));
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
Mat hier = new Mat();
zwiekszProgressBar(1);
//wygladzenie obrazu
imgSmooth = imgInput.PyrDown().PyrUp();
imgSmooth._SmoothGaussian(3);
//ograniczenie wykrywanych figur do odpowiedniego zakresu ze skali RGB - zoltego
imgOut = imgSmooth.InRange(new Bgr(0, 140, 150), new Bgr(80, 255, 255));
imgOut = imgOut.PyrDown().PyrUp();
imgOut._SmoothGaussian(3);
zwiekszProgressBar(2);
Dictionary <int, double> dict = new Dictionary <int, double>();
//wyszukanie konturow spelniajacych wymogi odnosnie mi.in. koloru
CvInvoke.FindContours(imgOut, contours, null, Emgu.CV.CvEnum.RetrType.List, Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple);
label1.Text = contours.Size.ToString();
//jesli odnaleziono chocby jeden kontur
if (contours.Size > 0)
{
//petla przechodzaca po wszystkich wykrytych konturach
for (int i = 0; i < contours.Size; i++)
{
using (VectorOfPoint contour = contours[i])
using (VectorOfPoint approxContour = new VectorOfPoint())
{
CvInvoke.ApproxPolyDP(contour, approxContour, CvInvoke.ArcLength(contour, true) * 0.05, true);
//filtr wielkosci pola wykrytego konturu
if (CvInvoke.ContourArea(approxContour, false) > 50)
{
//jesli to trójkąt
if (approxContour.Size == 3)
{
//tablica punktow i dodanie ich do tablicy trojkatow
Point[] pts = approxContour.ToArray();
triangleList.Add(new Triangle2DF(
pts[0],
pts[1],
pts[2]
));
//sprawdzenie czy wykryty trojkat jest figura obróconą jednym z wierzcholkow do dolu
if (pts[1].X > pts[0].X && pts[1].Y > pts[0].Y)
{
//ustawienie znaku A-7
ustawWykrytyZnak(2);
double area = CvInvoke.ContourArea(contours[i]);
//dodanie do tablicy glownej
dict.Add(i, area);
}
}
//jesli to czworokat
else if (approxContour.Size == 4)
{
bool isRectangle = true;
///rozbicie figury na pojedyncze krawedzie
Point[] pts = approxContour.ToArray();
LineSegment2D[] edges = PointCollection.PolyLine(pts, true);
//petla przechodzaca po wszystkich krawedziach
for (int j = 0; j < edges.Length; j++)
{
//sprawdzenie wielkosci kąta miedzy sprawdzanymi krawedziami
double angle = Math.Abs(
edges[(j + 1) % edges.Length].GetExteriorAngleDegree(edges[j]));
//przerwanie jesli kąty w figurze są mniejsze niż 80 i wieksze niż 100
if (angle < 80 || angle > 100)
{
isRectangle = false;
break;
}
}
if (isRectangle)
{
RotatedRect rrect = CvInvoke.MinAreaRect(contours[i]);
//ostateczne sprawdzenie czy wykryta figura jest obrocona wzgledem srodka o wartosc od 40 do 50
//stopni - znak D-1 jest obroconym kwadratem o 45 st wzgledem srodka
if ((rrect.Angle < -40 && rrect.Angle > -50) || (rrect.Angle > 40 && rrect.Angle < 50))
{
boxList.Add(CvInvoke.MinAreaRect(approxContour));
double area = CvInvoke.ContourArea(contours[i]);
dict.Add(i, area);
ustawWykrytyZnak(1);
}
}
}
}
}
}
}
zwiekszProgressBar(2);
var item = dict.OrderByDescending(v => v.Value);
foreach (var it in item)
{
int key = int.Parse(it.Key.ToString());
//pobranie odpowiednich konturow
Rectangle rect = CvInvoke.BoundingRectangle(contours[key]);
//narysowanie czerwonego prostokata wokol wykrytego znaku
CvInvoke.Rectangle(imgInput, rect, new MCvScalar(0, 0, 255), 1);
}
zwiekszProgressBar(2);
pictureBox2.Image = imgInput.Bitmap;
pictureBox2.SizeMode = PictureBoxSizeMode.StretchImage;
//utworzenie zdjecia wskazujacego WSZYSTKIE kontury w poczatkowym zdjeciu - czerowne linie
Image <Bgr, Byte> lineImage = imgInput.CopyBlank();
foreach (LineSegment2D line in lines)
{
lineImage.Draw(line, new Bgr(Color.Red), 1);
}
zdjecieWykrytyZnak.Image = lineImage.Bitmap;
zdjecieWykrytyZnak.SizeMode = PictureBoxSizeMode.StretchImage;
}
public static Bitmap ExtractDocumentFromBitmap(Bitmap bitmap)
{
if (bitmap.Width > bitmap.Height)
{
bitmap.RotateFlip(RotateFlipType.Rotate90FlipNone);
}
using (var image = new Image <Bgr, byte>(bitmap))
using (var imageGray = image.Convert <Gray, byte>())
using (var filteredImage = new Image <Bgr, byte>(bitmap))
using (var cannyEdges = new UMat())
using (var contours = new VectorOfVectorOfPoint())
{
CvInvoke.BilateralFilter(imageGray, filteredImage, 9, 75, 75);
CvInvoke.AdaptiveThreshold(filteredImage, filteredImage, 255, AdaptiveThresholdType.GaussianC, ThresholdType.Binary, 115, 4);
CvInvoke.MedianBlur(filteredImage, filteredImage, 11);
CvInvoke.CopyMakeBorder(filteredImage, filteredImage, 5, 5, 5, 5, BorderType.Constant, new MCvScalar(0, 0, 0));
CvInvoke.Canny(filteredImage, cannyEdges, 200, 250);
CvInvoke.FindContours(cannyEdges, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
var cannyEdgesHeight = cannyEdges.Bitmap.Height;
var cannyEdgesWidth = cannyEdges.Bitmap.Width;
var areaContour = (cannyEdgesHeight - 10) * (cannyEdgesWidth - 10);
var areaCount = areaContour * 0.5;
double areaContour2;
var sourcePointsVector = new VectorOfPoint();
for (int i = 0; i < contours.Size; i++)
{
using (var cont = contours[i])
{
CvInvoke.ApproxPolyDP(cont, cont, CvInvoke.ArcLength(cont, true) * 0.05, true);
if (cont.Size == 4 && CvInvoke.IsContourConvex(cont) &&
areaCount < CvInvoke.ContourArea(cont) &&
CvInvoke.ContourArea(cont) < areaContour)
{
sourcePointsVector = cont;
areaContour2 = CvInvoke.ContourArea(cont);
sortVector(sourcePointsVector);
break;
}
}
}
var sortedVector = sortVector(sourcePointsVector);
var vectorWithOffset = addOffsetToVector(sourcePointsVector, -5);
var euclideanHeight = new int[] { getEuclideanDistance(vectorWithOffset[0], vectorWithOffset[1]), getEuclideanDistance(vectorWithOffset[2], vectorWithOffset[3]) }.Max();
var euclideanWidth = new int[] { getEuclideanDistance(vectorWithOffset[0], vectorWithOffset[2]), getEuclideanDistance(vectorWithOffset[1], vectorWithOffset[3]) }.Max();
VectorOfPoint targetPoints = new VectorOfPoint(new Point[]
{
new Point(0, 0),
new Point(0, euclideanWidth),
new Point(euclideanHeight, euclideanWidth),
new Point(euclideanHeight, 0)
}.ToArray());
var source = sortVector(vectorWithOffset).ToArray().Select(x => new PointF(x.X, x.Y)).ToArray();
var target = sortVector(targetPoints).ToArray().Select(x => new PointF(x.X, x.Y)).ToArray();
var tran = CvInvoke.GetPerspectiveTransform(source, target);
CvInvoke.WarpPerspective(image, image, tran, new Size(euclideanHeight, euclideanWidth));
return(image.ToBitmap((int)standardDocumentWidth * 4, (int)standardDocumentHeight * 4));
}
}
public static Bitmap PerformShapeDetection(Bitmap frame, ShapeDetectionVariables detectionVars)
{
StringBuilder msgBuilder = new StringBuilder("Performance: ");
Image <Bgr, Byte> img = new Image <Bgr, byte>(frame);
Mat MatImg = img.Mat;
Mat outputImg = new Mat();
if (CudaInvoke.HasCuda)
{
using (GpuMat gMatSrc = new GpuMat())
using (GpuMat gMatDst = new GpuMat()) {
gMatSrc.Upload(MatImg);
CudaGaussianFilter noiseReducetion = new CudaGaussianFilter(MatImg.Depth, img.NumberOfChannels, MatImg.Depth, img.NumberOfChannels, new Size(1, 1), 0);
noiseReducetion.Apply(gMatSrc, gMatDst);
gMatDst.Download(outputImg);
}
}
else
{
Mat pyrDown = new Mat();
CvInvoke.PyrDown(img, pyrDown);
CvInvoke.PyrUp(pyrDown, img);
outputImg = img.Mat;
}
UMat uimage = new UMat();
CvInvoke.CvtColor(outputImg, uimage, ColorConversion.Bgr2Gray);
CircleF[] circles = new CircleF[0];
if (detectionVars.calcCircles)
{
circles = CvInvoke.HoughCircles(
uimage,
HoughType.Gradient, 1.0, 20.0,
detectionVars.circleCannyThreshold,
detectionVars.circleAccumulatorThreshold == 0 ? 1 : detectionVars.circleAccumulatorThreshold,
detectionVars.minradius,
detectionVars.maxRadius);
}
#region Canny and edge detection
UMat cannyEdges = new UMat();
CvInvoke.Canny(uimage, cannyEdges, detectionVars.lineCannyThreshold, detectionVars.cannyThresholdLinking);
LineSegment2D[] lines = new LineSegment2D[0];
if (detectionVars.calcLines)
{
lines = CvInvoke.HoughLinesP(
cannyEdges,
1, //Distance resolution in pixel-related units
Math.PI / 45.0, //Angle resolution measured in radians.
detectionVars.lineThreshold, //threshold
detectionVars.minLineWidth, //min Line width
10); //gap between lines
}
#endregion
#region Find triangles and rectangles
List <RotatedRect> boxList = new List <RotatedRect>(); //a box is a rotated rectangle
if (detectionVars.calcRectTri)
{
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint()) {
CvInvoke.FindContours(cannyEdges, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
int count = contours.Size;
for (int i = 0; i < count; i++)
{
using (VectorOfPoint contour = contours[i])
using (VectorOfPoint approxContour = new VectorOfPoint()) {
CvInvoke.ApproxPolyDP(contour, approxContour, CvInvoke.ArcLength(contour, true) * 0.05, true);
if (CvInvoke.ContourArea(approxContour, false) > 250) //only consider contours with area greater than 250
{
if (approxContour.Size == 4) //The contour has 4 vertices.
{
#region determine if all the angles in the contour are within [80, 100] degree
bool isRectangle = true;
Point[] pts = approxContour.ToArray();
LineSegment2D[] edges = PointCollection.PolyLine(pts, true);
for (int j = 0; j < edges.Length; j++)
{
double angle = Math.Abs(
edges[(j + 1) % edges.Length].GetExteriorAngleDegree(edges[j]));
if (angle < 80 || angle > 100)
{
isRectangle = false;
break;
}
}
#endregion
if (isRectangle)
{
boxList.Add(CvInvoke.MinAreaRect(approxContour));
}
}
}
}
}
}
}
#endregion
Image <Bgra, Byte> alphaImgShape = new Image <Bgra, byte>(img.Size.Width, img.Size.Height, new Bgra(0, 0, 0, .5));
Mat alphaimg = new Mat();
CvInvoke.CvtColor(img, alphaimg, ColorConversion.Bgr2Bgra);
#region draw rectangles and triangles
if (detectionVars.calcRectTri)
{
Image <Bgr, Byte> triangleRectangleImage = new Image <Bgr, Byte>(img.Size);
foreach (RotatedRect box in boxList)
{
CvInvoke.Polylines(triangleRectangleImage, Array.ConvertAll(box.GetVertices(), Point.Round), true, new Bgr(0, 255, 0).MCvScalar, 2);
}
CvInvoke.AddWeighted(alphaImgShape, .5, BlackTransparent(triangleRectangleImage), .5, 0, alphaImgShape);
if (CudaInvoke.HasCuda)
{
using (GpuMat gMatSrc = new GpuMat())
using (GpuMat gMatSrc2 = new GpuMat())
using (GpuMat gMatDst = new GpuMat()) {
gMatSrc.Upload(alphaimg);
gMatSrc2.Upload(alphaImgShape);
CudaInvoke.AlphaComp(gMatSrc, gMatSrc2, gMatDst, AlphaCompTypes.Plus);
gMatDst.Download(alphaimg);
}
}
else
{
img = Overlay(img, alphaImgShape);
}
}
#endregion
#region draw circles
if (detectionVars.calcCircles)
{
Image <Bgr, Byte> circleImage = new Image <Bgr, Byte>(img.Size);
foreach (CircleF circle in circles.Take(10))
{
CvInvoke.Circle(circleImage, Point.Round(circle.Center), (int)circle.Radius, new Bgr(0, 255, 0).MCvScalar, 2);
}
alphaImgShape = new Image <Bgra, byte>(img.Size.Width, img.Size.Height, new Bgra(0, 0, 0, .5));
CvInvoke.AddWeighted(alphaImgShape, .7, BlackTransparent(circleImage), .5, 0, alphaImgShape);
if (CudaInvoke.HasCuda)
{
using (GpuMat gMatSrc = new GpuMat())
using (GpuMat gMatSrc2 = new GpuMat())
using (GpuMat gMatDst = new GpuMat()) {
gMatSrc.Upload(alphaimg);
gMatSrc2.Upload(alphaImgShape);
CudaInvoke.AlphaComp(gMatSrc, gMatSrc2, gMatDst, AlphaCompTypes.Plus);
gMatDst.Download(alphaimg);
}
}
else
{
img = Overlay(img, alphaImgShape);
}
}
#endregion
#region draw lines
if (detectionVars.calcLines)
{
Image <Bgr, Byte> lineImage = new Image <Bgr, Byte>(img.Size);
foreach (LineSegment2D line in lines)
{
CvInvoke.Line(lineImage, line.P1, line.P2, new Bgr(0, 255, 0).MCvScalar, 2);
}
alphaImgShape = new Image <Bgra, byte>(img.Size.Width, img.Size.Height, new Bgra(0, 0, 0, .5));
CvInvoke.AddWeighted(alphaImgShape, .5, BlackTransparent(lineImage), .5, 0, alphaImgShape);
if (CudaInvoke.HasCuda)
{
using (GpuMat gMatSrc = new GpuMat())
using (GpuMat gMatSrc2 = new GpuMat())
using (GpuMat gMatDst = new GpuMat()) {
gMatSrc.Upload(alphaimg);
gMatSrc2.Upload(alphaImgShape);
CudaInvoke.AlphaComp(gMatSrc, gMatSrc2, gMatDst, AlphaCompTypes.Plus);
gMatDst.Download(alphaimg);
}
}
else
{
img = Overlay(img, alphaImgShape);
}
}
#endregion
GC.Collect(); // first time I've had to use this but this program will use as much memory as possible, resulting in corrptions
return(alphaimg.Bitmap ?? frame);
}
public Tuple <double, double> contour_1(int min, int max, Image <Bgr, byte> imgInput, int iron_r, int szar_r, int rain_r)
{
double carea = 0;
double len = 0;
double pre_len = 0;
double pre_carea = 0;
// kontur, pole i obwód dla palety barw Iron
if (iron_r == 1)
{
Image <Gray, byte> imgOut = imgInput.Convert <Gray, byte>().InRange(new Gray(min), new Gray(max));
Emgu.CV.Util.VectorOfVectorOfPoint contours = new Emgu.CV.Util.VectorOfVectorOfPoint();
Mat hier = new Mat();
CvInvoke.FindContours(imgOut, contours, hier, Emgu.CV.CvEnum.RetrType.Ccomp, Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple);
for (int i = 0; i < contours.Size; i++)
{
pre_carea = CvInvoke.ContourArea(contours[i]);
carea = carea + pre_carea;
pre_len = CvInvoke.ArcLength(contours[i], true);
len = len + pre_len;
}
}
// kontur, pole i obwód dla palety barw Rain
else if (rain_r == 1)
{
Image <Gray, byte> imgOut = imgInput.Convert <Gray, byte>().ThresholdBinaryInv(new Gray(min), new Gray(max));
Emgu.CV.Util.VectorOfVectorOfPoint contours = new Emgu.CV.Util.VectorOfVectorOfPoint();
Mat hier = new Mat();
CvInvoke.FindContours(imgOut, contours, hier, Emgu.CV.CvEnum.RetrType.Ccomp, Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple);
for (int i = 0; i < contours.Size; i++)
{
pre_carea = CvInvoke.ContourArea(contours[i]);
carea = carea + pre_carea;
pre_len = CvInvoke.ArcLength(contours[i], true);
len = len + pre_len;
}
}
// kontur, pole i obwód dla skali szarości
else if (szar_r == 1)
{
Image <Gray, byte>[] channels = imgInput.Split();
Image <Gray, byte> imgOut = channels[0];
Image <Gray, byte> imgOut_1 = imgOut.InRange(new Gray(min), new Gray(max));
Emgu.CV.Util.VectorOfVectorOfPoint contours = new Emgu.CV.Util.VectorOfVectorOfPoint();
Mat hier = new Mat();
CvInvoke.FindContours(imgOut_1, contours, hier, Emgu.CV.CvEnum.RetrType.External, Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple);
for (int i = 0; i < contours.Size; i++)
{
pre_carea = CvInvoke.ContourArea(contours[i]);
carea = carea + pre_carea;
pre_len = CvInvoke.ArcLength(contours[i], true);
len = len + pre_len;
}
}
return(Tuple.Create(carea, len));
}
private void openFileDialog1_FileOk(object sender, CancelEventArgs e)
{
outputLabel.Text = "";
StringBuilder msgBuilder = new StringBuilder("Performance: ");
Image <Bgr, Byte> img =
new Image <Bgr, byte>(openFileDialog1.FileName)
.Resize(400, 400, Emgu.CV.CvEnum.Inter.Linear, true);
//Convert the image to grayscale and filter out the noise
UMat uimage = new UMat();
CvInvoke.CvtColor(img, uimage, ColorConversion.Bgr2Gray);
//use image pyr to remove noise
UMat pyrDown = new UMat();
CvInvoke.PyrDown(uimage, pyrDown);
CvInvoke.PyrUp(pyrDown, uimage);
//Image<Gray, Byte> gray = img.Convert<Gray, Byte>().PyrDown().PyrUp();
#region circle detection
Stopwatch watch = Stopwatch.StartNew();
double cannyThreshold = 80.0;
double circleAccumulatorThreshold = 100;
CircleF[] circles = CvInvoke.HoughCircles(uimage, HoughType.Gradient, 2.0, 5.0, cannyThreshold, circleAccumulatorThreshold, 5, 150);
outputLabel.Text += "C: " + circles.Length;
watch.Stop();
msgBuilder.Append(String.Format("Hough circles - {0} ms; ", watch.ElapsedMilliseconds));
#endregion
#region Canny and edge detection
watch.Reset(); watch.Start();
double cannyThresholdLinking = 270.0;
UMat cannyEdges = new UMat();
CvInvoke.Canny(uimage, cannyEdges, cannyThreshold, cannyThresholdLinking);
LineSegment2D[] lines = CvInvoke.HoughLinesP(
cannyEdges,
1, //Distance resolution in pixel-related units
Math.PI / 45.0, //Angle resolution measured in radians.
20, //threshold
30, //min Line width
10); //gap between lines
watch.Stop();
outputLabel.Text += "\nL: " + lines.Length;
msgBuilder.Append(String.Format("Canny & Hough lines - {0} ms; ", watch.ElapsedMilliseconds));
#endregion
#region Find triangles and rectangles
watch.Reset(); watch.Start();
List <Triangle2DF> triangleList = new List <Triangle2DF>();
List <RotatedRect> boxList = new List <RotatedRect>(); //a box is a rotated rectangle
List <LineSegment2D> lineBoxes = new List <LineSegment2D>(); //for the species that looks like a line
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.FindContours(cannyEdges, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
int count = contours.Size;
for (int i = 0; i < count; i++)
{
using (VectorOfPoint contour = contours[i])
using (VectorOfPoint approxContour = new VectorOfPoint())
{
CvInvoke.ApproxPolyDP(contour, approxContour, CvInvoke.ArcLength(contour, true) * 0.05, true);
if (CvInvoke.ContourArea(approxContour, false) > 250) //only consider contours with area greater than 250
{
if (approxContour.Size == 3) //The contour has 3 vertices, it is a triangle
{
Point[] pts = approxContour.ToArray();
triangleList.Add(new Triangle2DF(
pts[0],
pts[1],
pts[2]
));
}
else if (approxContour.Size == 4) //The contour has 4 vertices.
{
#region determine if all the angles in the contour are within [80, 100] degree
bool isRectangle = true;
Point[] pts = approxContour.ToArray();
LineSegment2D[] edges = PointCollection.PolyLine(pts, true);
for (int j = 0; j < edges.Length; j++)
{
double angle = Math.Abs(
edges[(j + 1) % edges.Length].GetExteriorAngleDegree(edges[j]));
if (angle < 80 || angle > 100)
{
isRectangle = false;
break;
}
}
#endregion
if (isRectangle)
{
boxList.Add(CvInvoke.MinAreaRect(approxContour));
}
}
}
}
}
}
watch.Stop();
outputLabel.Text += "\nTriangles: " + triangleList.Count / 2;
outputLabel.Text += "\nRectangles: " + boxList.Count / 2;
msgBuilder.Append(String.Format("Triangles & Rectangles - {0} ms; ", watch.ElapsedMilliseconds));
#endregion
this.Text = msgBuilder.ToString();
#region draw triangles and rectangles
Image <Bgr, Byte> triangleRectangleImage = img.CopyBlank();
foreach (Triangle2DF triangle in triangleList)
{
img.Draw(triangle, new Bgr(Color.DarkBlue), 2);
}
foreach (RotatedRect box in boxList)
{
img.Draw(box, new Bgr(Color.DarkOrange), 2);
}
#endregion
#region draw circles
Image <Bgr, Byte> circleImage = img.CopyBlank();
foreach (CircleF circle in circles)
{
img.Draw(circle, new Bgr(Color.Brown), 2);
}
#endregion
#region draw lines
Image <Bgr, Byte> lineImage = img.CopyBlank();
foreach (LineSegment2D line in lines)
{
img.Draw(line, new Bgr(Color.Green), 2);
}
#endregion
originalImageBox.Image = img.ToBitmap();
}
public void PerformShapeDetection()
{
if (fileNameTextBox.Text != String.Empty)
{
StringBuilder msgBuilder = new StringBuilder("Performance: ");
//Load the image from file and resize it for display
Image <Bgr, Byte> img =
new Image <Bgr, byte>(fileNameTextBox.Text)
.Resize(400, 400, Emgu.CV.CvEnum.Inter.Linear, true);
//Convert the image to grayscale and filter out the noise
UMat uimage = new UMat();
CvInvoke.CvtColor(img, uimage, ColorConversion.Bgr2Gray);
//use image pyr to remove noise
UMat pyrDown = new UMat();
CvInvoke.PyrDown(uimage, pyrDown);
CvInvoke.PyrUp(pyrDown, uimage);
//Image<Gray, Byte> gray = img.Convert<Gray, Byte>().PyrDown().PyrUp();
#region circle detection
Stopwatch watch = Stopwatch.StartNew();
double cannyThreshold = 180.0;
double circleAccumulatorThreshold = 120;
CircleF[] circles = CvInvoke.HoughCircles(uimage, HoughType.Gradient, 2.0, 20.0, cannyThreshold, circleAccumulatorThreshold, 5);
watch.Stop();
msgBuilder.Append(String.Format("Hough circles - {0} ms; ", watch.ElapsedMilliseconds));
#endregion
#region Canny and edge detection
watch.Reset(); watch.Start();
double cannyThresholdLinking = 120.0;
UMat cannyEdges = new UMat();
CvInvoke.Canny(uimage, cannyEdges, cannyThreshold, cannyThresholdLinking);
LineSegment2D[] lines = CvInvoke.HoughLinesP(
cannyEdges,
1, //Distance resolution in pixel-related units
Math.PI / 45.0, //Angle resolution measured in radians.
20, //threshold
30, //min Line width
10); //gap between lines
watch.Stop();
msgBuilder.Append(String.Format("Canny & Hough lines - {0} ms; ", watch.ElapsedMilliseconds));
#endregion
#region Find triangles and rectangles
watch.Reset(); watch.Start();
List <Triangle2DF> triangleList = new List <Triangle2DF>();
List <RotatedRect> boxList = new List <RotatedRect>(); //a box is a rotated rectangle
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.FindContours(cannyEdges, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
int count = contours.Size;
for (int i = 0; i < count; i++)
{
using (VectorOfPoint contour = contours[i])
using (VectorOfPoint approxContour = new VectorOfPoint())
{
CvInvoke.ApproxPolyDP(contour, approxContour, CvInvoke.ArcLength(contour, true) * 0.05, true);
if (CvInvoke.ContourArea(approxContour, false) > 250) //only consider contours with area greater than 250
{
if (approxContour.Size == 3) //The contour has 3 vertices, it is a triangle
{
Point[] pts = approxContour.ToArray();
triangleList.Add(new Triangle2DF(
pts[0],
pts[1],
pts[2]
));
}
else if (approxContour.Size == 4) //The contour has 4 vertices.
{
#region determine if all the angles in the contour are within [80, 100] degree
bool isRectangle = true;
Point[] pts = approxContour.ToArray();
LineSegment2D[] edges = PointCollection.PolyLine(pts, true);
for (int j = 0; j < edges.Length; j++)
{
double angle = Math.Abs(
edges[(j + 1) % edges.Length].GetExteriorAngleDegree(edges[j]));
if (angle < 80 || angle > 100)
{
isRectangle = false;
break;
}
}
#endregion
if (isRectangle)
{
boxList.Add(CvInvoke.MinAreaRect(approxContour));
}
}
}
}
}
}
watch.Stop();
msgBuilder.Append(String.Format("Triangles & Rectangles - {0} ms; ", watch.ElapsedMilliseconds));
#endregion
originalImageBox.Image = img;
this.Text = msgBuilder.ToString();
#region draw triangles and rectangles
Mat triangleRectangleImage = new Mat(img.Size, DepthType.Cv8U, 3);
triangleRectangleImage.SetTo(new MCvScalar(0));
foreach (Triangle2DF triangle in triangleList)
{
CvInvoke.Polylines(triangleRectangleImage, Array.ConvertAll(triangle.GetVertices(), Point.Round), true, new Bgr(Color.DarkBlue).MCvScalar, 2);
}
foreach (RotatedRect box in boxList)
{
CvInvoke.Polylines(triangleRectangleImage, Array.ConvertAll(box.GetVertices(), Point.Round), true, new Bgr(Color.DarkOrange).MCvScalar, 2);
}
triangleRectangleImageBox.Image = triangleRectangleImage;
#endregion
#region draw circles
Mat circleImage = new Mat(img.Size, DepthType.Cv8U, 3);
circleImage.SetTo(new MCvScalar(0));
foreach (CircleF circle in circles)
{
CvInvoke.Circle(circleImage, Point.Round(circle.Center), (int)circle.Radius, new Bgr(Color.Brown).MCvScalar, 2);
}
circleImageBox.Image = circleImage;
#endregion
#region draw lines
Mat lineImage = new Mat(img.Size, DepthType.Cv8U, 3);
lineImage.SetTo(new MCvScalar(0));
foreach (LineSegment2D line in lines)
{
CvInvoke.Line(lineImage, line.P1, line.P2, new Bgr(Color.Green).MCvScalar, 2);
}
lineImageBox.Image = lineImage;
#endregion
}
}
public void GetBoundries(Image <Gray, Byte> binaryBackground, out List <Point[]> boundries, out List <Point[]> artefacts, out List <RotatedRect> boxes)
{
//Find outer boundries
double minimumContourArea = 250;
double minimumBoundryArea = 1000;
//double approximationFactor = 0.001;
List <Point[]> allBoundries = new List <Point[]>();
List <Point[]> allObjects = new List <Point[]>();
List <RotatedRect> boxList = new List <RotatedRect>();
using (Image <Gray, Byte> filteredBinary = binaryBackground.SmoothMedian(7))
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
using (Mat hierarchy = new Mat())
{
CvInvoke.FindContours(filteredBinary, contours, hierarchy, RetrType.Tree, ChainApproxMethod.ChainApproxNone);
var temp = hierarchy.ToImage <Bgra, Byte>();
int count = contours.Size;
List <int> boundryIds = new List <int>();
for (int i = 0; i < count; i++)
{
using (VectorOfPoint contour = contours[i])
{
double contourArea = CvInvoke.ContourArea(contour);
if (contourArea >= minimumBoundryArea)
{
Bgra currentContour = temp[0, i];
if (currentContour.Alpha == 0)
{
allBoundries.Add(contour.ToArray());
boundryIds.Add(i);
}
}
}
}
for (int i = 0; i < count; i++)
{
using (VectorOfPoint contour = contours[i])
{
double contourArea = CvInvoke.ContourArea(contour);
if (contourArea >= minimumContourArea)
{
Bgra currentContour = temp[0, i];
if (!boundryIds.Contains(i) && boundryIds.Contains((int)currentContour.Alpha))
{
bool isRectangle = true;
bool isCircle = false;
//Can the object be approximated as a circle or rectangle?
using (VectorOfPoint apxContour = new VectorOfPoint())
{
double epsilon = CvInvoke.ArcLength(contour, true) * 0.05;
CvInvoke.ApproxPolyDP(contour, apxContour, epsilon, true);
if (apxContour.Size == 4) //The contour has 4 vertices.
{
Point[] pts = apxContour.ToArray();
LineSegment2D[] edges = PointCollection.PolyLine(pts, true);
for (int j = 0; j < edges.Length; j++)
{
double angle = Math.Abs(edges[(j + 1) % edges.Length].GetExteriorAngleDegree(edges[j]));
if (angle < 70 || angle > 110)
{
isRectangle = false;
break;
}
}
if (isRectangle)
{
boxList.Add(CvInvoke.MinAreaRect(apxContour));
}
}
else
{
isRectangle = false;
}
}
if (!isRectangle && !isCircle)
{
allObjects.Add(contour.ToArray());
}
}
}
}
}
}
//Find mouse
//mousePoints = null;
//using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
//{
// CvInvoke.FindContours(binaryMouse, contours, null, RetrType.External, ChainApproxMethod.ChainApproxNone);
// int count = contours.Size;
// double maxArea = 0;
// for (int j = 0; j < count; j++)
// {
// using (VectorOfPoint contour = contours[j])
// {
// double contourArea = CvInvoke.ContourArea(contour);
// if (contourArea >= maxArea)
// {
// maxArea = contourArea;
// mousePoints = contour.ToArray();
// }
// }
// }
//}
boundries = allBoundries;
artefacts = allObjects;
boxes = boxList;
//Check if any contours can be approximated as shapes
//We now have a list of boundries, if there's more than one it means something is sticking across the screen
if (allBoundries.Count > 1)
{
//Need to find points from all boundries that are effectively parallel
}
//Image<Bgr, Byte> allContourImage = FirstFrame.Clone();
//allContourImage.DrawPolyline(mousePoints, true, new Bgr(Color.Yellow), 2);
//allContourImage.DrawPolyline(allBoundries.ToArray(), true, new Bgr(Color.Red), 2);
//allContourImage.DrawPolyline(allObjects.ToArray(), true, new Bgr(Color.LightGreen), 2);
//foreach (var box in boxList)
//{
// allContourImage.Draw(box.GetVertices().Select(x => new Point((int)x.X, (int)x.Y)).ToArray(), new Bgr(Color.Aqua), 2);
//}
}