C # Quick way to determine whether two pictures are consistent

C # Quick way to determine whether two pictures are consistent

#region to determine if the picture is consistent///<summary>////</summary>//<param name= "img" > Picture one &LT;/PARAM&G   T <param name= "BMP" > Picture two </param>//<returns> consistent </returns> public bool Issameimg (Bitmap img , Bitmap BMP) {//Size consistent if (IMG). Width = = bmp. Width && img. Height = = bmp. Height) {//Lock the picture to memory 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); Lock the picture two to memory 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);   The length is not the same if (length_i! = Length_b) {return false; } else {//cyclic judgment value for (int i = 0; i < length_i; i++) {//Inconsistent if (imgvalue_i[i]! = Imgvalue_b[i]) {RET   Urn false;   }} return true;   }} else {return false; }} #endregion

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