private void Transform(double[] srcPoints)
{
const int POINT_COUNT = 8;
System.Diagnostics.Debug.Assert(srcPoints.Length == POINT_COUNT);
double leftOffset = (srcGrid.Width - imgRaw.Source.Width) / 2;
double topOffset = (srcGrid.Height - imgRaw.Source.Height) / 2;
CvMat srcPointsMat = new CvMat(4, 2, MatrixType.F64C1, srcPoints);
CvMat dstPointsMat = new CvMat(4, 2, MatrixType.F64C1,
new double[POINT_COUNT] {
dstGrid.Width * 1 / 4, dstGrid.Height * 1 / 4, dstGrid.Width * 3 / 4, dstGrid.Height * 1 / 4,
dstGrid.Width * 3 / 4, dstGrid.Height * 3 / 4, dstGrid.Width * 1 / 4, dstGrid.Height * 3 / 4 });
CvMat viewerHomographyMatrix = new CvMat(3, 3, MatrixType.F64C1, new double[9]);
Cv.FindHomography(srcPointsMat, dstPointsMat, viewerHomographyMatrix);
CV.Mat src = WriteableBitmapConverter.ToMat((WriteableBitmap)imgRaw.Source);
CV.Mat dst = new CV.Mat((int)srcGrid.Height, (int)srcGrid.Width, src.Type());
Cv.WarpPerspective(src.ToCvMat(), dst.ToCvMat(), viewerHomographyMatrix);
imgTransformed.Source = WriteableBitmapConverter.ToWriteableBitmap(dst);
srcPointsMat.Dispose();
dstPointsMat.Dispose();
src.Dispose();
dst.Dispose();
}
