public static VectorOfPoint getMaxContour(Image <Bgr, Byte> src)
{
VectorOfPoint maxContour = null;
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
Image <Gray, Byte> gray = src.Convert <Gray, Byte>();
Image <Gray, Byte> mask = gray.CopyBlank();
CvInvoke.Threshold(gray, mask, 0, 255, Emgu.CV.CvEnum.ThresholdType.Binary);
CvInvoke.FindContours(mask.Clone(), contours, null, Emgu.CV.CvEnum.RetrType.External, Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple);
int contoursCount = contours.Size;
if (contoursCount > 0)
{
float maxArea = 0;
for (int i = 0; i < contoursCount; i++)
{
using (VectorOfPoint contour = contours[i]){
float area = Convert.ToSingle(CvInvoke.ContourArea(contour, false));
if (area > maxArea)
{
maxContour = contour.DeepClone();
maxArea = area;
}
}
}
}
mask.Dispose();
gray.Dispose();
return(maxContour);
}
