CaptchaRecogition.ImageProcess.GetStartBoundaryX C# (CSharp) 메소드

        private static int GetStartBoundaryX(Image img, int startY, int endY)
        {
            Bitmap bmp = new Bitmap(img);
            int startB = 0;
            for (int i = 0; i < img.Height; i++)
            {
                for (int j = startY; j < endY; j++)
                {
                    //遍历各个像素，获得bmp位图每个像素的RGB对象
                    Color pixelColor = bmp.GetPixel(j, i);
                    if (pixelColor.Name != "ffffffff")
                    {
                        startB = i;
                        break;
                    }
                    else
                        continue;
                }
                if (startB != 0)
                {
                    break;
                }
                else
                    continue;
            }
            return startB - 1;
        }