本文展示图像均值和方差计算实例，分别实现RGB图像和8位单通道图像的计算方法

实现代码如下：

#region 方法 RGB图像均值 直接操作内存快/// <summary>/// 定义RGB图像均值函数/// </summary>/// <param name="bmp"></param>/// <returns></returns>public static double MyBitmapMeanValue(Bitmap bmp){Bitmap bmpNew = MyBitmapClone(bmp);//需要克隆要不原图像变化了double returnValue = 0;Rectangle rect = new Rectangle(0, 0, bmpNew.Width, bmpNew.Height);//锁定bitmap到内存System.Drawing.Imaging.BitmapData bmpData = bmpNew.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format24bppRgb);unsafe{byte* pIn = (byte*)bmpData.Scan0.ToPointer();