/// <summary>
/// Submatrix operations
/// </summary>
private void SubMat()
{
Mat src = Cv2.ImRead(FilePath.Image.Lenna);
// Assign small image to mat
Mat small = new Mat();
Cv2.Resize(src, small, new Size(100, 100));
src[10, 110, 10, 110] = small;
src[370, 470, 400, 500] = small.T();
// ↑ This is same as the following:
//small.T().CopyTo(src[370, 470, 400, 500]);
// Get partial mat (similar to cvSetImageROI)
Mat part = src[200, 400, 200, 360];
// Invert partial pixel values
Cv2.BitwiseNot(part, part);
// Fill the region (50..100, 100..150) with color (128, 0, 0)
part = src.SubMat(50, 100, 400, 450);
part.SetTo(128);
using (new Window("SubMat", src))
{
Cv2.WaitKey();
}
}
