private void addWhitePoint(Picture sourcePicture, int i, int j, List <Point> points) { var pixelColor = PixelUtilities.GetPixelBgra8(sourcePicture.Pixels, i, j, sourcePicture.Width, sourcePicture.Height); if (PixelUtilities.IsColorWhite(pixelColor)) { points.Add(new Point(j, i)); } }