private void btn_process_Click(object sender, EventArgs e)
{
var image = picBox.Image;
var src = new Emgu.CV.Image <Bgra, byte>(new Bitmap(image));
SplitChannels(src);
// Perform binary thresolding here:
var channels = src.Split();
var alpha = channels[3];
var g = src.Convert <Gray, byte>();
// right now, alpha is all 255 (full white)
// we need to apply thresold so that:
// if it is black (or super low like < 5) then assign to 0;
// Otherwise, it should be part of the image hence alpha = 255;
var newAlpha = g.ThresholdBinary(new Gray(10), new Gray(255));
var newImage = new Emgu.CV.Image <Bgra, byte>(
new Emgu.CV.Image <Gray, byte>[]
{
channels[0],
channels[1],
channels[2],
newAlpha
});
picBox.Image = newImage.ToBitmap();
}
protected override void OnFrame(Parsley.Core.BuildingBlocks.FrameGrabber fp, Emgu.CV.Image <Emgu.CV.Structure.Bgr, byte> img)
{
Parsley.Core.ExtrinsicCalibration ec;
ExtrinsicCameraParameters ecp;
bool pattern_found = false;
Core.CalibrationPattern p = _pattern;
if (p != null)
{
Image <Gray, Byte> gray = img.Convert <Gray, Byte>();
pattern_found = p.FindPattern(gray);
p.DrawPattern(img, p.ImagePoints, p.PatternFound);
// if pattern has been found ==> find extrinsics and draw the corresponding coordinate frame
if (pattern_found == true && Context.Setup.Camera.Intrinsics != null)
{
ec = new Parsley.Core.ExtrinsicCalibration(p.ObjectPoints, Context.Setup.Camera.Intrinsics);
ecp = ec.Calibrate(p.ImagePoints);
if (ecp != null)
{
Core.Drawing.DrawCoordinateFrame(img, ecp, Context.Setup.Camera.Intrinsics);
}
}
}
base.OnFrame(fp, img);
}
protected override void OnFrame(Parsley.Core.BuildingBlocks.FrameGrabber fp, Emgu.CV.Image <Emgu.CV.Structure.Bgr, byte> img)
{
// Constraint checking
if (!Context.Setup.Camera.HasIntrinsics)
{
_on_roi = false;
return;
}
if (_interactor.State == Parsley.UI.InteractionState.Interacting)
{
_interactor.DrawIndicator(_interactor.Current, img);
}
else
{
_interactor.DrawIndicator(_r, img);
}
if (_on_roi && _pattern != null)
{
Image <Gray, Byte> gray = img.Convert <Gray, Byte>();
_pattern.IntrinsicParameters = Context.Setup.Camera.Intrinsics;
try
{
_pattern.FindPattern(gray, _r);
if (_pattern.PatternFound)
{
Parsley.Core.ExtrinsicCalibration ec = new Parsley.Core.ExtrinsicCalibration(_pattern.ObjectPoints, Context.Setup.Camera.Intrinsics);
ExtrinsicCameraParameters ecp = ec.Calibrate(_pattern.ImagePoints);
double[] deviations;
Vector[] points;
Core.ExtrinsicCalibration.CalibrationError(ecp, Context.Setup.Camera.Intrinsics, _pattern.ImagePoints,
_pattern.ObjectPoints, out deviations, out points);
double max_error = deviations.Max();
if (max_error < _last_error)
{
_last_detected_plane = ecp;
_last_error = max_error;
this.Logger.Info(String.Format("Extrinsics successfully calculated. Maximum error {0:F3}", _last_error));
}
}
else if (!_pattern.PatternFound & _last_detected_plane == null)
{
this.Logger.Warn("Pattern not found.");
}
}
catch (System.Exception e)
{
this.Logger.Warn(String.Format("Failed to determine extrinsic calibration: {0}", e.Message));
}
}
if (_last_detected_plane != null)
{
Core.Drawing.DrawCoordinateFrame(img, _last_detected_plane, Context.Setup.Camera.Intrinsics);
}
}
protected override void OnFrame(Parsley.Core.BuildingBlocks.FrameGrabber fp, Emgu.CV.Image <Emgu.CV.Structure.Bgr, byte> img)
{
Core.CalibrationPattern pattern = _pattern;
if (pattern != null)
{
Image <Gray, Byte> gray = img.Convert <Gray, Byte>();
pattern.FindPattern(gray);
this.UpdateStatusDisplay(pattern.PatternFound);
this.HandleCalibrateRequest();
this.HandleTakeImageRequest();
this.DrawCoordinateFrame(img);
pattern.DrawPattern(img, pattern.ImagePoints, pattern.PatternFound);
}
}
protected override void OnFrame(Parsley.Core.BuildingBlocks.FrameGrabber fp, Emgu.CV.Image <Emgu.CV.Structure.Bgr, byte> img)
{
Core.CalibrationPattern pattern = _pattern;
if (pattern != null)
{ //cari pola kalibrasi jika marker kalibrasi tersedia
Image <Gray, Byte> gray = img.Convert <Gray, Byte>(); //convert image to grayscale
pattern.FindPattern(gray); //cari pola kalibrasi
this.UpdateStatusDisplay(pattern.PatternFound);
this.HandleCalibrateRequest();
this.HandleTakeImageRequest();
this.DrawCoordinateFrame(img);
pattern.DrawPattern(img, pattern.ImagePoints, pattern.PatternFound); //gambar AR pada marker jika pattern ditemukan
}
}
override protected void OnFrame(Parsley.Core.BuildingBlocks.FrameGrabber fp, Emgu.CV.Image <Emgu.CV.Structure.Bgr, byte> img)
{
Core.CalibrationPattern pattern = this.Context.CalibrationPattern;
Emgu.CV.Image <Gray, Byte> gray = img.Convert <Gray, Byte>();
gray._EqualizeHist();
pattern.FindPattern(gray);
if (pattern.PatternFound)
{
Emgu.CV.ExtrinsicCameraParameters ecp = _ex.Calibrate(pattern.ImagePoints);
lock (Context.Viewer) {
Matrix m = Matrix.Identity(4, 4);
m.SetMatrix(0, 2, 0, 3, ecp.ExtrinsicMatrix.ToParsley());
_board_transform.Matrix = m.ToInterop();
}
}
pattern.DrawPattern(img, pattern.ImagePoints, pattern.PatternFound);
}
public virtual void ProcessImage(Emgu.CV.Image <Emgu.CV.Structure.Bgr, byte> image)
{
Emgu.CV.Image <Gray, byte> gray = image.Convert <Gray, byte>();
gray._ThresholdBinary(new Gray(_threshold), new Gray(255.0));
gray._Not();
Parsley.Core.EllipseDetector ed = new Parsley.Core.EllipseDetector();
ed.MinimumContourCount = _min_contour_count;
List <Parsley.Core.DetectedEllipse> ellipses =
new List <Parsley.Core.DetectedEllipse>(ed.DetectEllipses(gray));
List <Parsley.Core.DetectedEllipse> finals =
new List <Parsley.Core.DetectedEllipse>(
ellipses.Where(e => { return(e.Rating < _distance_threshold); })
);
finals.Sort(
(a, b) => {
double dista = a.Ellipse.MCvBox2D.center.X * a.Ellipse.MCvBox2D.center.X + a.Ellipse.MCvBox2D.center.Y * a.Ellipse.MCvBox2D.center.Y;
double distb = b.Ellipse.MCvBox2D.center.X * b.Ellipse.MCvBox2D.center.X + b.Ellipse.MCvBox2D.center.Y * b.Ellipse.MCvBox2D.center.Y;
return(dista.CompareTo(distb));
}
);
Bgr bgr = new Bgr(0, 255, 0);
MCvFont f = new MCvFont(Emgu.CV.CvEnum.FONT.CV_FONT_HERSHEY_PLAIN, 0.8, 0.8);
int count = 1;
foreach (Parsley.Core.DetectedEllipse e in finals)
{
image.Draw(e.Ellipse, bgr, 2);
image.Draw(count.ToString(), ref f, new System.Drawing.Point((int)e.Ellipse.MCvBox2D.center.X, (int)e.Ellipse.MCvBox2D.center.Y), bgr);
count++;
}
}
private void RefreshGrayImage()
{
try
{
//LogHelper.logger.Info("RefreshGrayImage called...");
if (pbScreen.Image == null)
return;
//Emgu.CV.Image<Emgu.CV.Structure.Gray, Byte> cvImage = new Emgu.CV.Image<Emgu.CV.Structure.Gray, Byte>(test as Bitmap);
Emgu.CV.Image<Emgu.CV.Structure.Gray, Byte> cvImage = new Emgu.CV.Image<Emgu.CV.Structure.Gray, Byte>(pbScreen.Image as Bitmap);
//Emgu.CV.CvInvoke.cvShowImage("Current Image under use...", cvImage);
double intensity = tbIntensity.Value;
var binaryImage = cvImage.Convert<Gray, byte>().ThresholdBinary(new Gray(intensity), new Gray(255));
//Emgu.CV.CvInvoke.cvShowImage("Current Image under use...", binaryImage);
pbIntensityTest.Image = (binaryImage.Bitmap).Clone(new Rectangle(0, 0, binaryImage.Width, binaryImage.Height), (binaryImage.Bitmap).PixelFormat);
txtIntensity.Text = tbIntensity.Value.ToString();
ImageProcessingManager.IntensityValue = intensity;
if (cbShowIntensityOnTop.Checked)
{
pbScreen.Image = pbIntensityTest.Image;
}
}
catch (Exception exception)
{
LogHelper.logger.Error("RefreshGrayImage: " + exception.Message);
LogHelper.logger.Error("RefreshGrayImage: " + exception.StackTrace);
MessageBox.Show("An error occurred. Please restart bot", "Chessbot", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
//LogHelper.logger.Info("RefreshGrayImage finished...");
}
public static Emgu.CV.Image<Emgu.CV.Structure.Gray, Byte> GetBinaryImage(Image inputImage, double intensity)
{
//LogHelper.logger.Info("GetBinaryImage called...");
Image<Gray, byte> binaryImage = null;
try
{
Emgu.CV.Image<Emgu.CV.Structure.Gray, Byte> cvImage = new Emgu.CV.Image<Emgu.CV.Structure.Gray, Byte>(inputImage as Bitmap);
binaryImage = cvImage.Convert<Gray, byte>().ThresholdBinary(new Gray(intensity), new Gray(255));
//Emgu.CV.CvInvoke.cvShowImage("Current Image under use...", binaryImage);
}
catch (Exception exception)
{
LogHelper.logger.Error("GetNextBestMove: " + exception.Message);
LogHelper.logger.Error("GetNextBestMove: " + exception.StackTrace);
MessageBox.Show("An error occurred. Please restart bot", "Chessbot", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
//LogHelper.logger.Info("GetBinaryImage finished...");
return binaryImage;
}
static public List <TempleteMatchingBestOrder> DoTempleteMatching(Emgu.CV.Image <Emgu.CV.Structure.Bgr, byte> f_Source,
Emgu.CV.Image <Emgu.CV.Structure.Bgr, byte> f_Templete,
Emgu.CV.CvEnum.TemplateMatchingType f_TempleteMatchingType = Emgu.CV.CvEnum.TemplateMatchingType.CcoeffNormed,
float f_Threadhold = 0.9F,
int f_GetNumberOfBest = 10,
bool f_IsUsePyramid = false,
int f_PyramidLevel = 1)
{
List <TempleteMatchingBestOrder> t_SortScore = new List <TempleteMatchingBestOrder>();
t_SortScore.Clear();
Emgu.CV.Image <Emgu.CV.Structure.Gray, float> t_Result;
if (f_IsUsePyramid == false)
{
t_Result = f_Source.Convert <Emgu.CV.Structure.Gray, byte>().MatchTemplate(f_Templete.Convert <Emgu.CV.Structure.Gray, byte>(), f_TempleteMatchingType);
double[] t_MinValues, t_maxValues;
Point[] t_MinLocations, t_MaxLocations;
t_Result.MinMax(out t_MinValues, out t_maxValues, out t_MinLocations, out t_MaxLocations);
TempleteMatchingBestOrder t_Temp;
for (int i = 0; i < t_Result.Rows; i++)
{
for (int j = 0; j < t_Result.Cols; j++)
{
float t_Value = t_Result.Data[i, j, 0];
if (t_Value >= f_Threadhold)
{
t_Temp.s_Location = new Point(j, i);
t_Temp.s_Score = t_Value;
t_SortScore.Add(t_Temp);
}
}
}
}
else
{
Emgu.CV.Image <Emgu.CV.Structure.Gray, byte>[] t_PyramidSource = new Emgu.CV.Image <Emgu.CV.Structure.Gray, byte> [f_PyramidLevel];
Emgu.CV.Image <Emgu.CV.Structure.Gray, byte>[] t_PyramidTemplete = new Emgu.CV.Image <Emgu.CV.Structure.Gray, byte> [f_PyramidLevel];
t_PyramidSource[0] = f_Source.Convert <Emgu.CV.Structure.Gray, byte>().Clone();
t_PyramidTemplete[0] = f_Templete.Convert <Emgu.CV.Structure.Gray, byte>().Clone();
int[] t_Level = new int[f_PyramidLevel];
t_Level[0] = 1;
for (int i = 1; i < f_PyramidLevel; i++)
{
t_Level[i] = t_Level[i - 1] * 2;
t_PyramidSource[i] = t_PyramidSource[i - 1].PyrDown().Clone();
t_PyramidTemplete[i] = t_PyramidTemplete[i - 1].PyrDown().Clone();
}
for (int i = f_PyramidLevel - 1; i >= 0; i--)
{
for (int j = f_PyramidLevel - 1; j >= 0; j--)
{
if (t_PyramidTemplete[j].Width > t_PyramidSource[i].Width || t_PyramidTemplete[j].Height > t_PyramidSource[i].Height)
{
continue;
}
t_Result = t_PyramidSource[i].MatchTemplate(t_PyramidTemplete[j], f_TempleteMatchingType);
double[] t_MinValues, t_maxValues;
Point[] t_MinLocations, t_MaxLocations;
t_Result.MinMax(out t_MinValues, out t_maxValues, out t_MinLocations, out t_MaxLocations);
if ((float)(t_maxValues[0]) <= f_Threadhold)
{
continue;
}
TempleteMatchingBestOrder t_Temp;
for (int x = 0; x < t_Result.Rows; x++)
{
for (int y = 0; y < t_Result.Cols; y++)
{
float t_Value = t_Result.Data[x, y, 0];
if (t_Value >= f_Threadhold)
{
t_Temp.s_Location = new Point(y * t_Level[i], x * t_Level[i]);
t_Temp.s_Score = t_Value;
t_SortScore.Add(t_Temp);
}
}
}
}
}
}
if (t_SortScore.Count > f_GetNumberOfBest)
{
return(t_SortScore.OrderByDescending(o => o.s_Score).ToList().GetRange(0, f_GetNumberOfBest));
}
else
{
return(t_SortScore.OrderByDescending(o => o.s_Score).ToList().GetRange(0, t_SortScore.Count));
}
}
public async Task <HttpResponseMessage> Index()
{
if (!Request.Content.IsMimeMultipartContent())
{
throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
}
Emgu.CV.CascadeClassifier cc = new Emgu.CV.CascadeClassifier(System.Web.Hosting.HostingEnvironment.MapPath("/haarcascade_frontalface_alt_tree.xml"));
var provider = new MultipartMemoryStreamProvider();
await Request.Content.ReadAsMultipartAsync(provider);
foreach (var file in provider.Contents)
{
var filename = file.Headers.ContentDisposition.FileName.Trim('\"');
var buffer = await file.ReadAsByteArrayAsync();
using (MemoryStream mStream = new MemoryStream(buffer, 0, buffer.Length))
{
mStream.Position = 0;
//Do whatever you want with filename and its binary data.
using (Bitmap bmp = new Bitmap(mStream))
{
using (Emgu.CV.Image <Emgu.CV.Structure.Bgr, Int32> img = new Emgu.CV.Image <Emgu.CV.Structure.Bgr, Int32>(bmp))
{
if (img != null)
{
var grayframe = img.Convert <Emgu.CV.Structure.Gray, byte>();
var faces = cc.DetectMultiScale(grayframe);//, 1.1, 10, Size.Empty);
int faceCount = 0;
foreach (var face in faces)
{
// only returns the first face found
faceCount++;
using (Bitmap faceBmp = new Bitmap(face.Right - face.Left, face.Bottom - face.Top))
{
Graphics g = Graphics.FromImage(faceBmp);
g.DrawImage(bmp, new Rectangle(0, 0, faceBmp.Width, faceBmp.Height), face.Left, face.Top, faceBmp.Width, faceBmp.Height, GraphicsUnit.Pixel);
MemoryStream outStream = new MemoryStream();
faceBmp.Save(outStream, System.Drawing.Imaging.ImageFormat.Jpeg);
var result = new HttpResponseMessage(HttpStatusCode.OK)
{
Content = new ByteArrayContent(outStream.ToArray()),
};
result.Content.Headers.ContentDisposition =
new System.Net.Http.Headers.ContentDispositionHeaderValue("attachment")
{
FileName = "face.jpg"
};
result.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("image/jpeg");
result.Content.Headers.ContentLength = outStream.Length;
return(result);
}
}
}
}
}
}
}
throw new HttpResponseException(HttpStatusCode.InternalServerError);
}
/// <summary>
/// Find ellipses in image
/// </summary>
/// <param name="img">Image to search pattern for</param>
/// <param name="image_points">Detected centers</param>
/// <returns>True if pattern was found, false otherwise</returns>
public override bool FindPattern(Emgu.CV.Image <Gray, byte> img, out System.Drawing.PointF[] image_points)
{
Emgu.CV.Image <Gray, byte> gray = img.Convert <Gray, byte>();
gray._ThresholdBinary(new Gray(_binary_threshold), new Gray(255.0));
gray._Not(); // Circles are black, black is considered backgroud, therefore flip.
Parsley.Core.EllipseDetector ed = new Parsley.Core.EllipseDetector();
ed.MinimumContourCount = this.MinimumContourCount;
// Detect initial ellipses
List <Parsley.Core.DetectedEllipse> ellipses =
new List <Parsley.Core.DetectedEllipse>(ed.DetectEllipses(gray));
// Filter out all ellipses below rating threshold
List <Parsley.Core.DetectedEllipse> finals =
new List <Parsley.Core.DetectedEllipse>(
ellipses.Where(e => { return(e.Rating < this.MeanDistanceThreshold); })
);
// At least the number of required ellipses need to be found
if (finals.Count < _number_circle_centers.Width * _number_circle_centers.Height)
{
image_points = new System.Drawing.PointF[0];
return(false);
}
int[] marker_ids;
if (!FindMarkerEllipses(gray, finals, out marker_ids))
{
image_points = new System.Drawing.PointF[0];
return(false);
}
// Check that all markers are found
if (marker_ids.Length != 4)
{
image_points = new System.Drawing.PointF[0];
return(false);
}
// Find intrinsic/extrinsic calibration matrices based on known marker correspondences
Emgu.CV.IntrinsicCameraParameters icp;
Emgu.CV.ExtrinsicCameraParameters ecp;
ApproximatePlane(finals, marker_ids, out icp, out ecp, img.Size);
// Project all object points to image points
MCvPoint3D32f[] converted_object_points = Array.ConvertAll(
this.ObjectPoints.ToArray(),
value => { return(value.ToEmguF()); });
System.Drawing.PointF[] expected_image_points =
Emgu.CV.CameraCalibration.ProjectPoints(converted_object_points, ecp, icp);
image_points =
expected_image_points.Select(
e => { return(NearestEllipseCenter(finals, e)); }
).Where(
ne => { return(Math.Sqrt(ne.dist2) < _ellipse_distance); }
).Select(
ne => { return(ne.center); }
).ToArray();
// currently we need to detect all requested ellipses.
return(image_points.Length == _number_circle_centers.Width * _number_circle_centers.Height);
}
protected Emgu.CV.Image <Emgu.CV.Structure.Hsv, Byte> GetHsvImage()
{
hsvImageCV = rawImageCV.Convert <Hsv, Byte>();
CvInvoke.CvtColor(hsvImageCV, hsvImageCV, ColorConversion.Bgr2HsvFull);
return(hsvImageCV);
}
private void button1_Click(object sender, EventArgs e)
{
DialogResult result = openFileDialog1.ShowDialog(this);
if (result == DialogResult.OK)
{
Bitmap bmp = (Bitmap)Bitmap.FromStream(openFileDialog1.OpenFile());
//pictureBox1.Image = bmp;
Emgu.CV.HaarCascade cascade = new Emgu.CV.HaarCascade("haarcascade_frontalface_default.xml");
Emgu.CV.HaarCascade eyeCascade = new Emgu.CV.HaarCascade("haarcascade_eye.xml");
Emgu.CV.Image<Emgu.CV.Structure.Bgr, Byte> image = new Emgu.CV.Image<Emgu.CV.Structure.Bgr, Byte>(bmp);
Emgu.CV.Image<Emgu.CV.Structure.Gray, Byte> gray = image.Convert<Emgu.CV.Structure.Gray, Byte>();
System.Diagnostics.Stopwatch watch = System.Diagnostics.Stopwatch.StartNew();
Emgu.CV.Structure.MCvAvgComp[][] faces = gray.DetectHaarCascade(cascade,
1.1000, 1, Emgu.CV.CvEnum.HAAR_DETECTION_TYPE.DO_CANNY_PRUNING, new Size(20,20));
watch.Stop();
float scalex = pictureBox1.Width / image.Width;
float scaley = pictureBox1.Height / image.Height;
//MessageBox.Show(string.Format("Found {0} Faces in {1} milliseconds", faces[0].Count().ToString(), watch.ElapsedMilliseconds.ToString()));
foreach (var f in faces[0])
{
StringBuilder sb = new StringBuilder();
sb.Append(f.rect.ToString());
gray.ROI = f.rect;
Emgu.CV.Structure.MCvAvgComp[][] eyes = gray.DetectHaarCascade(eyeCascade,
1.1000, 1, Emgu.CV.CvEnum.HAAR_DETECTION_TYPE.DO_CANNY_PRUNING, new Size(20, 20));
gray.ROI = Rectangle.Empty;
if (eyes[0].Length < 2) continue;
sb.Append(" => ");
sb.Append(eyes[0].Length.ToString());
listBox1.Items.Add(sb.ToString());
//MessageBox.Show(eyes[0].Count().ToString());
Graphics g = Graphics.FromImage(bmp);
g.DrawRectangle(new Pen(Brushes.Red), f.rect.X,
f.rect.Y, f.rect.Width,
f.rect.Height);
foreach (var eye in eyes[0])
{
Rectangle r = new Rectangle(
eye.rect.X + f.rect.X,
eye.rect.Y + f.rect.Y,
eye.rect.Width, eye.rect.Height
);
g.DrawRectangle(new Pen(Brushes.Yellow), r);
}
}
pictureBox1.Image = bmp;
//watch = System.Diagnostics.Stopwatch.StartNew();
//openCV.Net.Haar.HaarClassifierCascade cascade2 = openCV.Net.Haar.HaarClassifierCascade.Parse(XDocument.Load("haarcascade_frontalface_default.xml"));
//openCV.Net.Haar.Sequence<openCV.Net.Haar.AvgComp>
// seq = openCV.Net.FaceDetector.DetectFaces(bmp, cascade2);
//watch.Stop();
////MessageBox.Show(string.Format("Found {0} Faces in {1} milliseconds", seq.Count.ToString(), watch.ElapsedMilliseconds.ToString()));
//foreach (var a in seq)
//{
// pictureBox1.CreateGraphics().DrawRectangle(new Pen(Brushes.Yellow), a.Rectangle.X * scalex,
// a.Rectangle.Y * scaley, a.Rectangle.Width * scalex,
// a.Rectangle.Height * scaley);
//}
//using (FaceDetector fd = new FaceDetector(LibFaces.ClassifierType.Front))
//{
// var faces = fd.FindFaces(bmp);
// Graphics g = pictureBox1.CreateGraphics();
// g.DrawRectangles(new Pen(Brushes.Red), faces.ToArray());
//}
}
}
public void ProcessImage(Emgu.CV.Image <Emgu.CV.Structure.Bgr, byte> image)
{
Emgu.CV.Image <Gray, byte> gray = image.Convert <Gray, byte>();
Emgu.CV.Image <Gray, byte> binary = new Image <Gray, byte>(image.Size);
CvInvoke.cvThreshold(gray, binary, 40, 255, THRESH.CV_THRESH_BINARY | THRESH.CV_THRESH_OTSU);
binary._Not();
Emgu.CV.Contour <System.Drawing.Point> contour_points = binary.FindContours();
MemStorage storage = new MemStorage();
Matrix <double> warp = new Matrix <double>(3, 3);
while (contour_points != null)
{
Contour <Point> c = contour_points.ApproxPoly(contour_points.Perimeter * 0.05, storage);
double p = c.Perimeter;
if (c.Total == 4 && p > 300)
{
PointF[] src = new PointF[] {
new PointF(c[0].X, c[0].Y),
new PointF(c[1].X, c[1].Y),
new PointF(c[2].X, c[2].Y),
new PointF(c[3].X, c[3].Y)
};
CvInvoke.cvGetPerspectiveTransform(src, _dest, warp);
int flags = (int)INTER.CV_INTER_LINEAR + (int)WARP.CV_WARP_FILL_OUTLIERS;
CvInvoke.cvWarpPerspective(gray, _roi, warp, flags, new MCvScalar(0));
double min_error;
Orientation orient;
FindBestOrientation(out min_error, out orient);
if (min_error < 0.4)
{
image.DrawPolyline(c.ToArray(), true, new Bgr(Color.Green), 2);
System.Console.WriteLine(min_error + " " + orient);
switch (orient)
{
case Orientation.Degrees0:
image.Draw(new LineSegment2D(c[0], c[3]), new Bgr(System.Drawing.Color.Red), 2);
break;
case Orientation.Degrees90:
image.Draw(new LineSegment2D(c[1], c[0]), new Bgr(System.Drawing.Color.Red), 2);
break;
case Orientation.Degrees180:
image.Draw(new LineSegment2D(c[2], c[1]), new Bgr(System.Drawing.Color.Red), 2);
break;
case Orientation.Degrees270:
image.Draw(new LineSegment2D(c[3], c[2]), new Bgr(System.Drawing.Color.Red), 2);
break;
}
}
// 0 degrees
}
contour_points = contour_points.HNext;
}
}