CircleF FindHighestScoreCircle()
{
if (circles.Count != 0)
{
CircleFWithScore circleFWithMaxScore = circles[0];
foreach (CircleFWithScore circle in circles)
{
if (circle.score > circleFWithMaxScore.score)
{
circleFWithMaxScore = circle;
}
}
return(circleFWithMaxScore.circle);
}
else
{
throw new IndexOutOfRangeException();
}
}
public CircleF FindCircle(Image <Gray, Byte> image, int estimatedRadius, int patternType, int error = 30)
{
circles.Clear();
Image <Gray, Byte> bilateralFilteredImage, edgeDetectedImage, eroded, img;
img = image.Clone();
bilateralFilteredImage = new Mat().ToImage <Gray, byte>();
edgeDetectedImage = new Mat().ToImage <Gray, byte>();
eroded = new Mat().ToImage <Gray, byte>();
Mat hierarchy = new Mat();
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
//Mat
CvInvoke.MorphologyEx(img, img, MorphOp.Close, GenerateEllipseKernel(13), new Point(-1, -1), 1, BorderType.Default, new MCvScalar());
CvInvoke.BilateralFilter(img, bilateralFilteredImage, 9, 30, 30);
CvInvoke.Canny(bilateralFilteredImage, edgeDetectedImage, 25, 25);
CvInvoke.MorphologyEx(edgeDetectedImage, eroded, MorphOp.Close, GenerateEllipseKernel(11), new Point(-1, -1), 1, BorderType.Default, new MCvScalar());
CvInvoke.FindContours(eroded, contours, hierarchy, RetrType.List, ChainApproxMethod.ChainApproxSimple);
for (int i = 0; i < contours.Size; i++)
{
using (VectorOfPoint contour = contours[i])
{
Rectangle r = CvInvoke.BoundingRectangle(contour);
double w, h;
if (IsSquare(r.Width, r.Height))
{
w = r.Width;
h = r.Height;
double rect_area = ((w * w) / 4) * Math.PI;
CircleF circle = CvInvoke.MinEnclosingCircle(contour);
double circle_area = circle.Radius * circle.Radius * Math.PI;
if ((Math.Abs(rect_area - circle_area) < rect_area / 10) &&
(Math.Abs(Math.Sqrt(circle_area / 3.14) - estimatedRadius) < error) && (w > 21) && (h > 21))
{
CircleFWithScore temp = new CircleFWithScore(circle, CvInvoke.ContourArea(contour) / circle.Area);
circles.Add(temp);
}
}
}
}
//CvInvoke.MatchTemplate(img,templ:templ,)
//CvInvoke.Imshow("edge", eroded);
//var watch = System.Diagnostics.Stopwatch.StartNew();
CircleF result = FindHighestScoreCircle();
if (MatchPattern(image, result, patternType))
{
//watch.Stop();
//var elapsedMs = watch.ElapsedMilliseconds;
//Console.WriteLine("\nFinished pattern matching in " + elapsedMs + "ms");
return(result);
}
else
{
//watch.Stop();
//var elapsedMs = watch.ElapsedMilliseconds;
//Console.WriteLine("\nFinished pattern matching in " + elapsedMs + "ms");
throw new IndexOutOfRangeException();
}
}