I can get image coordinate using this code.But I want to do the same by using Matrix.
private int _angle = 90;
float scaleFactorX = (float)resizeWidth / (float)originalWidth;
float scaleFactorY = (float)resizeHeight / (float)originalHeight;
graphics.TranslateTransform((float)(width / 2), (float)(height / 2));
graphics.ScaleTransform(scaleFactorX, scaleFactorY);
graphics.RotateTransform(_angle);
graphics.TranslateTransform(-(float)originalWidth / 2, -(float)originalHeight /2);
graphics.TransformPoints(System.Drawing.Drawing2D.CoordinateSpace.World, System.Drawing.Drawing2D.CoordinateSpace.Device, point);
Thank you all in advance.