Win8 Metro(C#)数字图像处理--2.47人脸红眼去除算法

原文:Win8 Metro(C#)数字图像处理--2.47人脸红眼去除算法



[函数名称]

  红眼去除     RedeyeRemoveProcess(WriteableBitmap src)

        /// <summary>

        /// Redeye remove Process.

        /// </summary>

        /// <param name="src">The source image.</param>

        /// <returns></returns>

        public static WriteableBitmap RedeyeRemoveProcess(WriteableBitmap src)////红眼去除

        {

            if (src != null)

            {

                int w = src.PixelWidth;

                int h = src.PixelHeight;

                WriteableBitmap srcImage = new WriteableBitmap(w, h);

                byte[] temp = src.PixelBuffer.ToArray();

                byte[] tempMask = (byte[])temp.Clone();

                int r, g, b;

                int Rc, Gc, Bc;

                for (int i = 0; i < temp.Length; i += 4)

                {

                    b = tempMask[i];

                    g = tempMask[i + 1];

                    r = tempMask[i + 2];

                    if (r > (int)(g + b))//这里 只是简单的判断一下红眼像素只为说明红眼去除算法，实际上要使用一定的红眼判断算法决策

                    {

                        Rc = (int)((g + b) / 2);

                        Gc = (int)((g + Rc) / 2);

                        Bc = (int)((b + Rc) / 2);

                        temp[i] = (byte)Bc;

                        temp[i + 1] = (byte)Gc;

                        temp[i + 2] = (byte)Rc;

                    }

                }

                Stream sTemp = srcImage.PixelBuffer.AsStream();

                sTemp.Seek(0, SeekOrigin.Begin);

                sTemp.Write(temp, 0, w * 4 * h);

                return srcImage;

            }

            else

            {

                return null;

            }

        }

[图像效果]