public static List <Rectangle> getRectsByColorHsv(Image <Bgr, byte> original, Hsv lower, Hsv higher)
{
List <Rectangle> rectangles = new List <Rectangle>();
var filtered = ColorFilterer.filterByHsv(original, lower, higher);
VectorOfVectorOfPoint contoursDetected = new VectorOfVectorOfPoint();
CvInvoke.FindContours(filtered, contoursDetected, null, Emgu.CV.CvEnum.RetrType.List, Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple);
VectorOfVectorOfPoint contoursArray = new VectorOfVectorOfPoint();
int count = contoursDetected.Size;
for (int i = 0; i < count; i++)
{
using (VectorOfPoint currContour = contoursDetected[i])
{
if (currContour.Size > 50)
{
Rectangle rect = CvInvoke.BoundingRectangle(currContour);
contoursArray.Push(currContour);
rectangles.Add(rect);
}
}
}
return(rectangles);
}
public Image <Bgr, byte> Lab5Process(double area = 100)
{
var thresh = MainImageExp.Convert <Gray, byte>();
thresh._ThresholdBinaryInv(new Gray(128), new Gray(255));
thresh._Dilate(5);
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
CvInvoke.FindContours(thresh, contours, null, RetrType.External, ChainApproxMethod.ChainApproxSimple);
var output = MainImageExp.Convert <Bgr, byte>();
int[,] hierarchy = CvInvoke.FindContourTree(thresh, contours, ChainApproxMethod.ChainApproxNone);
for (int i = 0; i < contours.Size; i++)
{
if (hierarchy[i, 3] == -1)
{
if (CvInvoke.ContourArea(contours[i], false) > area && CvInvoke.ContourArea(contours[i], false) < 50000) //игнорирование маленьких контуров
{
Rectangle rect = CvInvoke.BoundingRectangle(contours[i]);
RoiList.Add(rect);
output.Draw(rect, new Bgr(Color.Blue), 1);
}
}
}
MainImageExp = output.Convert <Bgr, byte>();
return(MainImageExp);
}
public static List <NeuronBodyMask> GenerateNeuronBodyMasks(List <VectorOfPoint> input)
{
List <NeuronBodyMask> result = new List <NeuronBodyMask>();
NeuronBodyMask tmp_mask = new NeuronBodyMask();
Rectangle R = new Rectangle();
Image <Gray, Byte> maskImg = new Image <Gray, Byte>(1, 1, new Gray(0));
Point C = new Point();
VectorOfVectorOfPoint tmp_vvop = new VectorOfVectorOfPoint();
MCvMoments moments = new MCvMoments();
for (int i = 0; i < input.Count; i++)
{
R = CvInvoke.BoundingRectangle(input[i]);
maskImg = new Image <Gray, byte>(184, 140, new Gray(0));
tmp_vvop = new VectorOfVectorOfPoint();
tmp_vvop.Push(input[i]);
CvInvoke.DrawContours(maskImg, tmp_vvop, -1, new MCvScalar(255), -1, LineType.EightConnected);
moments = CvInvoke.Moments(input[i]);
C = new Point((int)(moments.M10 / moments.M00), (int)(moments.M01 / moments.M00));
//maskImg.Draw(new Point[] { C }, new Gray(100), 1);
tmp_mask = new NeuronBodyMask(R, maskImg, C);
result.Add(tmp_mask);
}
return(result);
}
public void PutDescriptions(Image <Bgr, byte> imgInput, VectorOfVectorOfPoint contours, int i, VectorOfPoint approx)
{
var moments = CvInvoke.Moments(contours[i]);
int x = (int)(moments.M10 / moments.M00);
int y = (int)(moments.M01 / moments.M00);
if (approx.Size == 3)
{
CvInvoke.PutText(imgInput, "Triangle", new Point(x, y), Emgu.CV.CvEnum.FontFace.HersheySimplex, 0.5, new MCvScalar(0, 0, 255), 2);
}
if (approx.Size == 4)
{
Rectangle rect = CvInvoke.BoundingRectangle(contours[i]);
if (Math.Abs(1 - (rect.Width / rect.Height)) < 0.06)
{
CvInvoke.PutText(imgInput, "Square", new Point(x, y), Emgu.CV.CvEnum.FontFace.HersheySimplex, 0.5, new MCvScalar(0, 0, 255), 2);
}
else
{
CvInvoke.PutText(imgInput, "Rectangle", new Point(x, y), Emgu.CV.CvEnum.FontFace.HersheySimplex, 0.5, new MCvScalar(0, 0, 255), 2);
}
}
if (approx.Size == 5)
{
CvInvoke.PutText(imgInput, "Pentagon", new Point(x, y), Emgu.CV.CvEnum.FontFace.HersheySimplex, 0.5, new MCvScalar(0, 0, 255), 2);
}
}
public static Rectangle detect_blue_rectangle(Bitmap b1, Bitmap b2)
{
Rectangle ret = Rectangle.Empty;
Image <Bgr, Byte> img1 = new Image <Bgr, byte>(b1);
Image <Bgr, Byte> img2 = new Image <Bgr, byte>(b2);
Mat diff = new Mat();
CvInvoke.AbsDiff(img1, img2, diff);
Mat tmp = new Mat();
CvInvoke.CvtColor(diff, tmp, ColorConversion.Bgr2Gray);
CvInvoke.Threshold(tmp, diff, 0, 255, ThresholdType.Binary | ThresholdType.Otsu);
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.FindContours(diff, contours, null, RetrType.External, ChainApproxMethod.ChainApproxNone);
int count = contours.Size;
double m = 0.0;
for (int i = 0; i < count; i++)
{
double d = CvInvoke.ContourArea(contours[i]);
if (d > m)
{
m = d;
ret = CvInvoke.BoundingRectangle(contours[i]);
}
}
}
Program.logIt(string.Format("detect_blue_rectangle: -- {0}", ret));
return(ret);
}
/// <summary>
/// Filter the license plate to remove noise
/// </summary>
/// <param name="plate">The license plate image</param>
/// <returns>License plate image without the noise</returns>
private static Image <Gray, Byte> FilterPlate(Image <Gray, Byte> plate)
{
Image <Gray, Byte> thresh = plate.ThresholdBinaryInv(new Gray(120), new Gray(255));
using (Image <Gray, Byte> plateMask = new Image <Gray, byte>(plate.Size))
using (Image <Gray, Byte> plateCanny = plate.Canny(100, 50))
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
plateMask.SetValue(255.0);
CvInvoke.FindContours(plateCanny, contours, null, RetrType.External, ChainApproxMethod.ChainApproxSimple);
int count = contours.Size;
for (int i = 1; i < count; i++)
{
using (VectorOfPoint contour = contours[i])
{
Rectangle rect = CvInvoke.BoundingRectangle(contour);
if (rect.Height > (plate.Height >> 1))
{
rect.X -= 1; rect.Y -= 1; rect.Width += 2; rect.Height += 2;
rect.Intersect(plate.ROI);
plateMask.Draw(rect, new Gray(0.0), -1);
}
}
}
thresh.SetValue(0, plateMask);
}
thresh._Erode(1);
thresh._Dilate(1);
return(thresh);
}
/// <summary>
/// re-order the hulls by x-axis. Then crop characters from the original image in that order.
/// </summary>
/// <param name="plate_after_preprocessing"></param>
/// <param name="contours"></param>
/// <returns></returns>
private static List <Image <Gray, byte> > ordered_character(Image <Gray, byte> plate_after_preprocessing, List <VectorOfPoint> contours)
{
List <Image <Gray, byte> > order_character_image = new List <Image <Gray, byte> >();
Dictionary <Rectangle, VectorOfPoint> dict_to_order = new Dictionary <Rectangle, VectorOfPoint>();
for (int i = 0; i < contours.Count; i++)
{
Rectangle r = CvInvoke.BoundingRectangle(contours[i]);
dict_to_order.Add(r, contours[i]);
}
var ordered_result = dict_to_order.OrderByDescending(i => i.Key.X);
List <VectorOfPoint> ordered_contours = new List <VectorOfPoint>();
foreach (KeyValuePair <Rectangle, VectorOfPoint> kvp in ordered_result)
{
ordered_contours.Add(kvp.Value);
plate_after_preprocessing.ROI = kvp.Key;
Image <Gray, byte> roi = new Image <Gray, byte>(kvp.Key.Width, kvp.Key.Height);
plate_after_preprocessing.CopyTo(roi);
order_character_image.Add(roi);
plate_after_preprocessing.ROI = Rectangle.Empty;
}
return(order_character_image);
}
public Image <Bgr, byte> ReturnMovingArea2(Mat frame, int minArea)
{
Image <Gray, byte> cur = frame.ToImage <Gray, byte>();
Image <Bgr, byte> curBgr = frame.ToImage <Bgr, byte>();
if (bg == null)
{
bg = cur;
}
Image <Gray, byte> diff = bg.AbsDiff(cur);
diff._ThresholdBinary(new Gray(100), new Gray(255));
diff.Erode(3);
diff.Dilate(4);
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
CvInvoke.FindContours(diff, contours, null, RetrType.External, ChainApproxMethod.ChainApproxTc89L1);
var output = curBgr;
for (int i = 0; i < contours.Size; i++)
{
if (CvInvoke.ContourArea(contours[i]) > minArea) //игнорирование маленьких контуров
{
Rectangle rect = CvInvoke.BoundingRectangle(contours[i]);
output.Draw(rect, new Bgr(Color.LawnGreen), 2);
}
}
return(output);
}
private (Image <Bgr, byte>, List <Rectangle>) detectTextSegments(Image <Bgr, byte> img, Mat kernel = null)
{
try
{
if (kernel == null)
{
kernel = Mat.Ones(3, 9, DepthType.Cv8U, 1);
}
var binary = img.Convert <Gray, byte>()
.ThresholdBinaryInv(new Gray(240), new Gray(255))
.MorphologyEx(MorphOp.Dilate, kernel, new Point(-1, -1), 1, BorderType.Default, new MCvScalar(255));
var temp = img.Clone();
var conours = new VectorOfVectorOfPoint();
var h = new Mat();
CvInvoke.FindContours(binary, conours, h, RetrType.External, ChainApproxMethod.ChainApproxSimple);
var bboxes = new List <Rectangle>();
for (int i = 0; i < conours.Size; i++)
{
var bbox = CvInvoke.BoundingRectangle(conours[i]);
bboxes.Add(bbox);
CvInvoke.Rectangle(temp, bbox, new MCvScalar(0, 0, 255), 2);
}
bboxes = bboxes.OrderBy(x => x.Y).ToList();
return(temp, bboxes);
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
public Image <Bgr, byte> Binarization()
{
var resultImage = sourceImage.CopyBlank();
var grayImage = sourceImage.Convert <Gray, byte>();
grayImage._ThresholdBinaryInv(new Gray(100), new Gray(255));
grayImage._Dilate(5);
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
CvInvoke.FindContours(grayImage, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
var output = sourceImage.Copy();
for (int i = 0; i < contours.Size; i++)
{
if (CvInvoke.ContourArea(contours[i], false) > 50) //игнорирование маленьких контуров
{
Rectangle rect = CvInvoke.BoundingRectangle(contours[i]);
rois.Add(rect);
output.Draw(rect, new Bgr(Color.Blue), 1);
}
}
resultImage = output.Convert <Bgr, byte>();
return(resultImage);
}
public Image <Bgr, byte> ReturnTextAreas(Image <Bgr, byte> image)
{
var resultImage = image.Copy();
var thresh = resultImage.Convert <Gray, byte>();
thresh._ThresholdBinaryInv(new Gray(128), new Gray(255));
thresh._Dilate(5);
Mat hierarchy = new Mat();
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
CvInvoke.FindContours(thresh, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
for (int i = 0; i < contours.Size; i++)
{
if (CvInvoke.ContourArea(contours[i], false) > 50) //игнорирование маленьких контуров
{
Rectangle rect = CvInvoke.BoundingRectangle(contours[i]);
rois.Add(rect);
resultImage.Draw(rect, new Bgr(Color.Blue), 2);
}
}
return(resultImage);
}
public List <Rectangle> sort_contours(Emgu.CV.Util.VectorOfVectorOfPoint cnts, string method)
{
List <Rectangle> BoundingBoxes = new List <Rectangle>();
//get the boxes into a list
for (int i = 0; i < cnts.Size; i++)
{
Emgu.CV.Util.VectorOfPoint contour = cnts[i];
Rectangle BoundingBox = CvInvoke.BoundingRectangle(contour);
BoundingBoxes.Add(BoundingBox);
}
// if no method specified defaut to l to r top to bottom
List <Rectangle> SortedBoxes = BoundingBoxes.OrderBy(Rectangle => Rectangle.X).ThenBy(Rectangle => Rectangle.Y).ToList();
if (method == "right-to-left")
{
SortedBoxes = BoundingBoxes.OrderByDescending(Rectangle => Rectangle.X).ThenBy(Rectangle => Rectangle.Y).ToList();
}
else if (method == "top-to-bottom")
{
SortedBoxes = BoundingBoxes.OrderBy(Rectangle => Rectangle.Y).ThenBy(Rectangle => Rectangle.X).ToList();
}
else if (method == "bottom-to-top")
{
SortedBoxes = BoundingBoxes.OrderByDescending(Rectangle => Rectangle.Y).ThenBy(Rectangle => Rectangle.X).ToList();
}
return(SortedBoxes);
}
void findContours(Mat threshold, Mat cam)
{
Mat temp;
temp = threshold.Clone();// threshold.copyTo(temp);
//these two vectors needed for output of findContours
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
Mat hierarchy = new Mat();
//find contours of the filtered image using openCV findContours function
CvInvoke.FindContours(temp, contours, hierarchy, Emgu.CV.CvEnum.RetrType.Ccomp, Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple);
for (int i = 0; i < contours.Size; i++)
{
Mat c = new Mat();
//if the contour is too small, ignore it
if (CvInvoke.ContourArea(contours[i]) < 1000)
{
continue;
}
//compute the bounding box for the contour, draw it on the frame
Rectangle rect = CvInvoke.BoundingRectangle(contours[i]);
if (rect.Width > 40 && rect.Height > 40)
{
CvInvoke.Rectangle(cam, rect, new MCvScalar(0, 0, 255), 2);
}
}
}
/// <summary>
/// 画外接矩
/// </summary>
private void DrawContourRectangle(ContoursArgs e)
{
VectorOfPoint cnt = e.Contours[e.ContourIndex];
Rectangle rectangle = CvInvoke.BoundingRectangle(cnt);
CvInvoke.Rectangle(mTempImage, rectangle, e.Color, e.Thickness);
}
private void btStep3_Click(object sender, EventArgs e)
{
Mat paper = new Mat();
Image <Gray, Byte> input = inputMat.ToImage <Gray, Byte>();
cropped = new Mat();
VectorOfPointF coners = new VectorOfPointF();
//List<Point> contourPoints;
////find bounding contour
//contourPoints = docContours.ToArrayOfArray()
// .Where(group => group.Length == docContours.ToArrayOfArray().Max(points => points.Length))
// .SingleOrDefault().ToList();
Rectangle rect = CvInvoke.BoundingRectangle(docContours[0]);
Mat quad = new Mat();
quad.Create(answerSheetRealSize.Height, answerSheetRealSize.Width, DepthType.Cv8U, 0);
VectorOfPointF quadPts = new VectorOfPointF();
quadPts.Push(new PointF[] { new PointF(0, 0), new PointF(quad.Cols, 0), new PointF(quad.Cols, quad.Rows), new PointF(0, quad.Rows) });
Mat transmat = CvInvoke.GetPerspectiveTransform(docConers, quadPts);
CvInvoke.WarpPerspective(grayInput, cropped, transmat, quad.Size);
imageResult.Image = cropped;
//input.DrawPolyline(contourPoints.ToArray<Point>(), true, new Gray(0), 10);
//imageResult.Image = input;
}
public DetectorResult VocrColorInformation(Frame frame, int threshold, double gain, int brightnessThreshold, bool show)
{
Image <Bgr, Byte> img = new Image <Bgr, byte>((Bitmap)frame.Image.Clone());
var imgGray = img.Convert <Gray, Byte>();
var imgSobel = imgGray.Sobel(1, 0, 3).Convert <Gray, Byte>();
var imgRes = new Image <Gray, byte>(imgSobel.Size);
CvInvoke.Threshold(imgSobel, imgRes, 0, 255, ThresholdType.Binary | ThresholdType.Otsu);
var element = CvInvoke.GetStructuringElement(ElementShape.Cross, new Size(2, 2), new Point(-1, -1));
CvInvoke.Dilate(imgRes, imgRes, element, new Point(0, 0), 2, BorderType.Default, new MCvScalar(0));
CvInvoke.Erode(imgRes, imgRes, element, new Point(0, 0), 16, BorderType.Default, new MCvScalar(0));
DetectorResult detectorResult = new DetectorResult();
using (Mat hierachy = new Mat())
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint()) {
CvInvoke.FindContours(imgRes, contours, hierachy, RetrType.List, ChainApproxMethod.ChainApproxSimple);
for (int i = 0; i < contours.Size; i++)
{
Rectangle rectangle = CvInvoke.BoundingRectangle(contours[i]);
var area = rectangle.Width * rectangle.Height;
if (area > 1000)//} && rectangle.Width < img.Width * 0.7 && rectangle.Width > rectangle.Height * 1.5) {
{
detectorResult.Regions.Add(new DetectorRegion(rectangle));
}
}
}
return(detectorResult);
}
/// <summary>
/// Crop a line of text to the given dimensions
/// </summary>
private static Image <Gray, byte> cropLineOfText(Image <Gray, byte> image, Size dimension)
{
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
Mat hier = new Mat();
List <Mat> letters = new List <Mat>();
// Better contouring with inverted image (black background on white text)
image._Not();
// Get rid of extra space around the text
Mat structuringElement = CvInvoke.GetStructuringElement(ElementShape.Rectangle, dimension, new Point(-1, -1));
Mat dilation = new Mat();
CvInvoke.Dilate(image, dilation, structuringElement, new Point(-1, -1), 1, BorderType.Default, new MCvScalar());
CvInvoke.FindContours(dilation, contours, hier, RetrType.External, ChainApproxMethod.ChainApproxNone);
// Invert image back to original
image._Not();
// Create new image cropped by the new lineBoundry
Image <Gray, byte> croppedLine = null;
Rectangle lineBoundry = CvInvoke.BoundingRectangle(contours[0]);
croppedLine = image.Copy(lineBoundry);
return(croppedLine);
}
public string SearchText(Image <Bgr, byte> img, int iterations = 251, int thresholdValue = 80, string language = "eng")
{
VectorOfVectorOfPoint contours = GetContours(
GaussianBlur(img, 5).ThresholdBinary(new Gray(thresholdValue), new Gray(255)).Dilate(iterations)
);
List <Image <Bgr, byte> > roiImages = new List <Image <Bgr, byte> >();
for (int i = 0; i < contours.Size; i++)
{
if (CvInvoke.ContourArea(contours[i], false) > 50)
{
Rectangle rect = CvInvoke.BoundingRectangle(contours[i]);
img.ROI = rect;
roiImages.Add(img.Copy());
img.ROI = Rectangle.Empty;
}
}
Tesseract ocr = new Tesseract(LANGUAGES_PATH, language, OcrEngineMode.Default);
string text = "";
roiImages.ForEach((Image <Bgr, byte> roiImage) => {
ocr.SetImage(roiImage);
ocr.Recognize();
text += ocr.GetUTF8Text();
});
return(text);
}
static void test_blue_color()
{
Mat img = CvInvoke.Imread(@"C:\test\save_00.jpg", ImreadModes.AnyColor);
Mat img1 = new Mat();
CvInvoke.GaussianBlur(img, img1, new Size(11, 11), 0);
img1.Save("temp_1.jpg");
Bgr c1 = new Bgr(100, 50, 0); //new Bgr(160, 50, 30);
Bgr c2 = new Bgr(250, 220, 100); //new Bgr(250, 200, 100);
Bgr c3 = new Bgr(80, 20, 10); //new Bgr(160, 50, 30);
Bgr c4 = new Bgr(160, 100, 60); //new Bgr(250, 200, 100);
Image <Gray, Byte> g1 = (img1.ToImage <Bgr, Byte>()).InRange(c3, c4);
g1.Save("temp_2.jpg");
Rectangle maxR = new Rectangle(0, 0, 60, 60);
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.FindContours(g1, contours, null, RetrType.External, ChainApproxMethod.ChainApproxNone);
int count = contours.Size;
for (int i = 0; i < count; i++)
{
Rectangle r = CvInvoke.BoundingRectangle(contours[i]);
if (r.Height * r.Width > maxR.Height * maxR.Width)
{
maxR = r;
}
}
}
Program.logIt(string.Format("{0}", maxR));
if (maxR.X > 0 && maxR.Y > 0)
{
g1.GetSubRect(maxR).Save("temp_3.jpg");
}
}
private PointF GetLocation()
{
int x = CvInvoke.BoundingRectangle(contour).Right - CvInvoke.BoundingRectangle(contour).Width / 2;
int y = CvInvoke.BoundingRectangle(contour).Bottom - CvInvoke.BoundingRectangle(contour).Height / 2;
PointF p = new PointF(x, y);
Mat usefulMat = new Mat();
if (noteType > 2)
{
CvInvoke.Erode(blobMat, usefulMat,
CvInvoke.GetStructuringElement(ElementShape.Cross, new Size(27, 27), new Point(13, 13)),
new Point(1, 1), 1, BorderType.Default, new MCvScalar(1));
CvInvoke.Dilate(usefulMat, usefulMat,
CvInvoke.GetStructuringElement(ElementShape.Ellipse, new Size(27, 27), new Point(13, 13)),
new Point(1, 1), 1, BorderType.Default, new MCvScalar(1));
CvInvoke.BitwiseNot(usefulMat, usefulMat);
}
else
{
usefulMat = blobMat;
}
VectorOfKeyPoint keyPoints = new VectorOfKeyPoint(detector.Detect(usefulMat));
for (int i = 0; i < keyPoints.Size; i++)
{
if (keyPoints[i].Point.Y - width <p.Y && keyPoints[i].Point.Y + width> p.Y)
{
p.X = keyPoints[i].Point.X;
p.Y = keyPoints[i].Point.Y;
break;
}
}
return(p);
}
public Image <Bgr, byte> FilterMask(Image <Gray, byte> mask, Image <Bgr, byte> image)
{
var anchor = new Point(-1, -1);
var borderValue = new MCvScalar(1);
var kernel = CvInvoke.GetStructuringElement(ElementShape.Ellipse, new Size(3, 3), anchor);
var closing = mask.MorphologyEx(MorphOp.Close, kernel, anchor, 1, BorderType.Default, borderValue);
var opening = closing.MorphologyEx(MorphOp.Open, kernel, anchor, 1, BorderType.Default, borderValue);
var dilation = opening.Dilate(7);
var threshold = dilation.ThresholdBinary(new Gray(240), new Gray(255));
var copy = image.Copy();
var contours = new VectorOfVectorOfPoint();
CvInvoke.FindContours(threshold, contours, null, RetrType.External, ChainApproxMethod.ChainApproxTc89L1);
for (int i = 0; i < contours.Size; i++)
{
if (CvInvoke.ContourArea(contours[i]) > 700)
{
Rectangle boundingRect = CvInvoke.BoundingRectangle(contours[i]);
copy.Draw(boundingRect, new Bgr(Color.GreenYellow), 2);
}
}
return(copy);
}
private void pictureBox1_MouseClick(object sender, MouseEventArgs e)
{
try
{
if (cc == null)
{
return;
}
int label = (int)cc[e.Y, e.X].Intensity;
if (label > 0)
{
var tempImg1 = cc.InRange(new Gray(label), new Gray(label));
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
Mat m = new Mat();
CvInvoke.FindContours(tempImg1, contours, m, Emgu.CV.CvEnum.RetrType.External, Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple);
if (contours.Size > 0)
{
Rectangle rectBox = CvInvoke.BoundingRectangle(contours[0]);
imgInput.ROI = rectBox;
var img = imgInput.Copy();
imgInput.ROI = Rectangle.Empty;
pictureBox2.Image = img.ToBitmap();
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public static PadSegmentInfo[] GetPadSegmentInfo(Image <Gray, byte> image, Rectangle ROI)
{
List <PadSegmentInfo> padinfo = new List <PadSegmentInfo>();
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.FindContours(image, contours, null, Emgu.CV.CvEnum.RetrType.External, Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple);
for (int i = 0; i < contours.Size; i++)
{
Moments mm = CvInvoke.Moments(contours[i]);
if (mm.M00 == 0)
{
continue;
}
Point ctCnt = new Point(Convert.ToInt32(mm.M10 / mm.M00), Convert.ToInt32(mm.M01 / mm.M00));
ctCnt.X += ROI.X;
ctCnt.Y += ROI.Y;
Rectangle bound = CvInvoke.BoundingRectangle(contours[i]);
bound.X += ROI.X;
bound.Y += ROI.Y;
double s = CvInvoke.ContourArea(contours[i]);
PadSegmentInfo pad = new PadSegmentInfo();
pad.Contours = contours[i].ToArray();
for (int j = 0; j < pad.Contours.Length; j++)
{
pad.Contours[j] = new Point(pad.Contours[j].X + ROI.X, pad.Contours[j].Y + ROI.Y);
}
pad.Bouding = bound;
pad.Area = s;
pad.Center = ctCnt;
padinfo.Add(pad);
}
}
return(padinfo.ToArray());
}
private void btnBox_Click(object sender, EventArgs e)
{
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
var tempimg1 = WorkingImg.Clone();
var tempimg2 = WorkingImg.Clone();
CvInvoke.FindContours(tempimg1, contours, null, RetrType.External, ChainApproxMethod.ChainApproxNone);
Image <Bgr, byte> colorimg = tempimg2.Convert <Bgr, byte>();
for (int i = 0; i < contours.Size; i++)
{
CvInvoke.DrawContours(colorimg, contours, i, new MCvScalar(14, 200, 40));
}
List <System.Drawing.Rectangle> PassBoxArr = new List <System.Drawing.Rectangle>();
for (int i = 0; i < contours.Size; i++)
{
System.Drawing.Rectangle rc = CvInvoke.BoundingRectangle(contours[i]);
PassBoxArr.Add(rc);
}
Parallel.For(0, PassBoxArr.Count, i =>
{
colorimg.Draw(PassBoxArr[i], new Bgr(20, 5, 165), 1);
});
rtxLog.AppendText("Box" + Environment.NewLine);
RegistHisroty(WorkingImg);
}
public static Tuple <bool, Rectangle, Bitmap> extrac_context_menu(Bitmap b1, Bitmap b2)
{
bool retB = false;
Rectangle retR = Rectangle.Empty;
Bitmap retImg = null;
Image <Bgra, byte> img1 = new Image <Bgra, byte>(b1);
Image <Bgra, byte> img2 = new Image <Bgra, byte>(b2);
Image <Bgra, byte> diff = img2.AbsDiff(img1);
//diff.Save("temp_2.jpg");
img1 = diff.PyrDown();
diff = img1.PyrUp();
//img2.Save("temp_2.jpg");
UMat uimage = new UMat();
CvInvoke.CvtColor(diff, uimage, ColorConversion.Bgr2Gray);
//uimage.Save("temp_3.jpg");
//MCvScalar mean = new MCvScalar();
//MCvScalar std_dev = new MCvScalar();
//CvInvoke.MeanStdDev(uimage, ref mean, ref std_dev);
UMat bimage = new UMat();
//CvInvoke.Threshold(uimage, bimage, mean.V0 + std_dev.V0, 255, ThresholdType.Binary);
CvInvoke.Threshold(uimage, bimage, 0, 255, ThresholdType.Binary | ThresholdType.Otsu);
//bimage.Save("temp_2.jpg");
Rectangle roi = Rectangle.Empty;
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.FindContours(bimage, contours, null, RetrType.External, ChainApproxMethod.ChainApproxNone);
int count = contours.Size;
for (int i = 0; i < count; i++)
{
double a1 = CvInvoke.ContourArea(contours[i], false);
Rectangle r = CvInvoke.BoundingRectangle(contours[i]);
//Program.logIt(string.Format("{0}", r));
if (a1 > 500.0)
{
//Program.logIt(string.Format("{0}", r));
if (roi.IsEmpty)
{
roi = r;
}
else
{
roi = Rectangle.Union(roi, r);
}
}
}
}
if (!roi.IsEmpty && img2.Width > roi.Width && img2.Height > roi.Height)
{
//Image<Bgra, byte> cropped = img2.GetSubRect(roi);
retB = true;
retR = roi;
retImg = img2.GetSubRect(retR).Bitmap;
//Program.logIt(string.Format("rect={0}", retR));
}
return(new Tuple <bool, Rectangle, Bitmap>(retB, retR, retImg));
}
/// <summary>
/// Detect scene text from the given image
/// </summary>
/// <param name="image">The image</param>
/// <returns>The detected scene text.</returns>
public DetectedObject[] Detect(IInputArray image)
{
using (VectorOfVectorOfPoint vvp = new VectorOfVectorOfPoint())
using (VectorOfFloat confidents = new VectorOfFloat())
{
_textDetector.Detect(image, vvp, confidents);
Point[][] detectionResults = vvp.ToArrayOfArray();
float[] confidentResult = confidents.ToArray();
List <DetectedObject> results = new List <DetectedObject>();
for (int i = 0; i < detectionResults.Length; i++)
{
DetectedObject st = new DetectedObject();
PointF[] detectedPointF =
Array.ConvertAll(detectionResults[i], p => new PointF((float)p.X, (float)p.Y));
st.Region = CvInvoke.BoundingRectangle(detectionResults[i]);
st.Confident = confidentResult[i];
using (Mat textSubMat = new Mat())
{
FourPointsTransform(image, detectedPointF, new Size(100, 32), textSubMat);
String text = _ocr.Recognize(textSubMat);
st.Label = text;
}
results.Add(st);
}
return(results.ToArray());
}
}
public Image <Gray, Byte> RescaleImage(Image <Gray, Byte> image)
{
var contours = new VectorOfVectorOfPoint();
var hierarchy = new Mat();
CvInvoke.FindContours(image, contours, hierarchy, Emgu.CV.CvEnum.RetrType.Tree, Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple);
double largestArea = 0;
int index = -1;
for (int i = 0; i < contours.Size; i++)
{
double a = CvInvoke.ContourArea(contours[i], false);
if (a > largestArea)
{
largestArea = a;
index = i;
}
}
VectorOfPoint poly = new VectorOfPoint();
CvInvoke.ApproxPolyDP(contours[index], poly, 3, true);
Rectangle rect = CvInvoke.BoundingRectangle(poly);
image.ROI = rect;
var croppedImage = new Image <Gray, Byte>(image.Width, image.Height);
var resizedImage = new Image <Gray, Byte>(Width, Height);
croppedImage = image.Copy();
CvInvoke.Resize(croppedImage, resizedImage, new Size(Width, Height));
return(resizedImage);
}
private async void segmentTextToolStripMenuItem_Click(object sender, EventArgs e)
{
imgOutput = imgInput.Convert <Gray, byte>().ThresholdBinaryInv(new Gray(50), new Gray(255));
Emgu.CV.Util.VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
Mat hierar = new Mat();
CvInvoke.FindContours(imgOutput, contours, hierar, Emgu.CV.CvEnum.RetrType.External, Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple);
show = true;
if (contours.Size > 0)
{
for (int i = 0; i < contours.Size; i++)
{
//double area = CvInvoke.ContourArea(contours[i]);
Rectangle rect = CvInvoke.BoundingRectangle(contours[i]);
imgInput.ROI = rect;
img = imgInput.Copy().ToBitmap();
imgInput.ROI = Rectangle.Empty;
this.Invalidate();
await Task.Delay(1000);
}
show = false;
}
}
public static List <Point> FindQuadroPoints(VectorOfPoint Input)
{
VectorOfVectorOfPoint drawable = new VectorOfVectorOfPoint();
Image <Gray, Byte> img = new Image <Gray, Byte>(184, 140, new Gray(255));
drawable.Push(Input);
CvInvoke.DrawContours(img, drawable, -1, new MCvScalar(0), 1, LineType.EightConnected);
//поиск точек с четыремя соседями. небольшая оптимизация подсчета благодаря ВB
Rectangle BB = CvInvoke.BoundingRectangle(Input);
List <Point> quadro = new List <Point>();
for (int y = BB.Y; y < BB.Y + BB.Height; y++)
{
for (int x = BB.X; x < BB.X + BB.Width; x++)
{
if ((img[y - 1, x].Intensity == 0) && (img[y + 1, x].Intensity == 0) &&
(img[y, x - 1].Intensity == 0) && (img[y, x + 1].Intensity == 0))
{
quadro.Add(new Point(x, y));
}
}
}
return(quadro);
}
private void DisplayBoxes(Image <Bgr, byte> imgInput, VectorOfVectorOfPoint contours)
{
var list = new List <Rectangle>();
if (contours.Size > 0)
{
for (int i = 0; i < contours.Size; i++)
{
var brect = CvInvoke.BoundingRectangle(contours[i]);
double ar = brect.Width / brect.Height;
if (ar > 2 && brect.Width > 25 && brect.Height > 8 && brect.Height < 100)
{
list.Add(brect);
}
}
var imgOut = imgInput.CopyBlank();
foreach (var r in list)
{
CvInvoke.Rectangle(imgInput, r, new MCvScalar(0, 0, 255), 2);
CvInvoke.Rectangle(imgOut, r, new MCvScalar(0, 255, 255), -1);
}
imgOut._And(imgOut);
contrastBox.Image = imgOut.Bitmap;
outputBox.Image = imgInput.Bitmap;
}
}