public static Emgu.CV.Util.VectorOfVectorOfPoint FindContours(this Emgu.CV.IInputOutputArray image,
Emgu.CV.CvEnum.ChainApproxMethod method)
{
var contours = new Emgu.CV.Util.VectorOfVectorOfPoint();
Emgu.CV.CvInvoke.FindContours(image: image,
contours: contours,
hierarchy: null,
mode: Emgu.CV.CvEnum.RetrType.External,
method: method);
return(contours);
}
public static Emgu.CV.Structure.RotatedRect GetLargestFeature(this Emgu.CV.IInputOutputArray image)
{
using (var contours = image.FindContours(method: Emgu.CV.CvEnum.ChainApproxMethod.ChainApproxSimple))
{
var bigSize = 0d;
Emgu.CV.Util.VectorOfPoint?bigPoints = null;
for (var x = 0; x < contours.Size; x++)
{
var points = contours[x];
var size = points.CalculateContourArea();
if (size > bigSize)
{
bigSize = size;
bigPoints = points;
}
}
return(bigPoints?.FindMinAreaRect() ?? Emgu.CV.Structure.RotatedRect.Empty);
}
}
