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本文介绍PS中滤镜-模糊-平均模糊的效果实现: 这个效果很简单,原理如下: 1,统计全图像素的R,G,B值得和sumR,sumG,sumB; 2,计算平均R,G,B(R = sumR/(width*height)...); 3,用平均R,G,B代替全图所有像素即可。 代码实现如下: ~~~ public static Bitmap Mean(Bitmap src) { Bitmap dst = new Bitmap(src); BitmapData srcData = dst.LockBits(new Rectangle(0, 0, dst.Width, dst.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); byte* p = (byte*)srcData.Scan0; int i, j; int sumR, sumG, sumB; int pos; int width = dst.Width; int height = dst.Height; int stride = srcData.Stride; sumB = 0; sumG = 0; sumR = 0; for (j = 0; j < height; j++) { for (i = 0; i < width; i++) { pos = i * 4 + j * stride; sumB += p[pos]; sumG += p[pos + 1]; sumR += p[pos + 2]; } } pos = width * height; sumB = sumB / pos; sumG = sumG / pos; sumR = sumR / pos; for (j = 0; j < height; j++) { for (i = 0; i < width; i++) { pos = i * 4 + j * stride; p[pos] = (byte)sumB; p[pos + 1] = (byte)sumG; p[pos + 2] = (byte)sumR; } } dst.UnlockBits(srcData); return dst; } ~~~ 效果与PS一模一样: ![](https://box.kancloud.cn/2016-01-05_568b332866c91.jpg) 原图 ![](https://box.kancloud.cn/2016-01-05_568b33287d2d6.jpg) 本文算法效果图 ![](https://box.kancloud.cn/2016-01-05_568b332888185.jpg) PS效果图 跟大家分享一下!