/// <summary>         /// 自动去除图像扫描黑边         /// </summary>         /// <param name="fileName"></param>         public static void AutoCutBlackEdge(string fileName)         {             //打开图像             Bitmap bmp = OpenImage(fileName);             RemoveBlackEdge(bmp);             //保存图像             SaveImage(bmp, fileName);         }         private static byte[] rgbValues; // 目标数组内存         /// <summary>         /// 图像去黑边         /// </summary>         /// <param name="bmp"></param>         /// <returns></returns>         private static Bitmap RemoveBlackEdge(Bitmap bmp)         {             Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);             BitmapData bmpData = bmp.LockBits(rect, ImageLockMode.ReadWrite, bmp.PixelFormat);             // 获取图像参数              int w = bmpData.Width;             int h = bmpData.Height;             int stride = bmpData.Stride;  // 扫描线的宽度             double picByteSize = GetPicByteSize(bmp.PixelFormat);             int bWidth = (int)Math.Ceiling(picByteSize * w); //显示宽度             int offset = stride - bWidth;  // 显示宽度与扫描线宽度的间隙              IntPtr ptr = bmpData.Scan0;   // 获取bmpData的内存起始位置              int scanBytes = stride * h;  // 用stride宽度，表示这是内存区域的大小             // 分别设置两个位置指针，指向源数组和目标数组              int posScan = 0;             rgbValues = new byte[scanBytes];  // 为目标数组分配内存              Marshal.Copy(ptr, rgbValues, 0, scanBytes);  // 将图像数据拷贝到rgbValues中              bool isPass = true;             int i = 0, j = 0;             int cutW = (int)(bWidth * 0.02); //2%宽度（可修改）             int cutH = (int)(h * 0.02);      //2%高度（可修改）             int posLen = (int)(picByteSize * 8); //继续查找深度为8的倍数（可修改）             //左边             for (i = 0; i < h; i++)             {                 for (j = 0; j < bWidth; j++)                 {                     isPass = true;                     if (rgbValues[posScan] < 255) rgbValues[posScan] = 255;                     if (rgbValues[posScan + 1] == 255)                     {                         for (int m = 1; m <= posLen; m++)                         {                             if (rgbValues[posScan + m] < 255) isPass = false;                         }                     }                     if (rgbValues[posScan + 1] < 255 || bWidth / 2 < j) isPass = false;                     recCheck(ref rgbValues, posScan, h, stride, true);                     posScan++;                     if (j >= cutW && isPass) break;                 }                 // 跳过图像数据每行未用空间的字节，length = stride - width * bytePerPixel                  if (j == bWidth) posScan += offset;                 else posScan += (offset + bWidth - j - 1);             }             //右边             posScan = scanBytes - 1;             for (i = h - 1; i >= 0; i--)             {                 posScan -= offset;                 for (j = bWidth - 1; j >= 0; j--)                 {                     isPass = true;                     if (rgbValues[posScan] < 255) rgbValues[posScan] = 255;                     if (rgbValues[posScan - 1] == 255)                     {                         for (int m = 1; m <= posLen; m++)                         {                             if (rgbValues[posScan - m] < 255) isPass = false;                         }                     }                     if (rgbValues[posScan - 1] < 255 || bWidth / 2 > j) isPass = false;                     recCheck(ref rgbValues, posScan, h, stride, false);                     posScan--;                     if (cutH < (h - i))                         if (j < (bWidth - cutW) && isPass) break;                 }                 // 跳过图像数据每行未用空间的字节，length = stride - width * bytePerPixel                 if (j != -1) posScan -= j;             }             // 内存解锁              Marshal.Copy(rgbValues, 0, ptr, scanBytes);             bmp.UnlockBits(bmpData);  // 解锁内存区域              return bmp;         }         /// <summary>         /// 上下去除黑边时，临近黑点去除         /// </summary>         /// <param name="rgbValues"></param>         /// <param name="posScan"></param>         /// <param name="h"></param>         /// <param name="stride"></param>         /// <param name="islLeft"></param>         private static void recCheck(ref byte[] rgbValues, int posScan, int h, int stride, bool islLeft)         {             int scanBytes = h * stride;             int cutH = (int)(h * 0.01); //临近最大1%高度（可修改）             for (int i = 1; i <= cutH; i++)             {                 int befRow = 0;                 if (islLeft && (posScan - stride * i) > 0)                 {                     befRow = posScan - stride * i;                 }                 else if (!islLeft && (posScan + stride * i) < scanBytes)                 {                     befRow = posScan + stride * i;                 }                 if (rgbValues[befRow] < 255) rgbValues[befRow] = 255;                 else break;             }         }