c# 判断两张图片是否一致的快速方法
#region 判断图片是否一致 ////// 判断图片是否一致 /// /// 图片一 /// 图片二 ///是否一致 public bool IsSameImg(Bitmap img, Bitmap bmp) { //大小一致 if (img.Width == bmp.Width && img.Height == bmp.Height) { //将图片一锁定到内存 BitmapData imgData_i = img.LockBits(new Rectangle(0, 0, img.Width, img.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb); IntPtr ipr_i = imgData_i.Scan0; int length_i = imgData_i.Width * imgData_i.Height * 3; byte[] imgValue_i = new byte[length_i]; Marshal.Copy(ipr_i, imgValue_i, 0, length_i); img.UnlockBits(imgData_i); //将图片二锁定到内存 BitmapData imgData_b = img.LockBits(new Rectangle(0, 0, img.Width, img.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb); IntPtr ipr_b = imgData_b.Scan0; int length_b = imgData_b.Width * imgData_b.Height * 3; byte[] imgValue_b = new byte[length_b]; Marshal.Copy(ipr_b, imgValue_b, 0, length_b); img.UnlockBits(imgData_b); //长度不相同 if (length_i != length_b) { return false; } else { //循环判断值 for (int i = 0; i < length_i; i++) { //不一致 if (imgValue_i[i] != imgValue_b[i]) { return false; } } return true; } } else { return false; } } #endregion
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