C # Quick way to determine whether two pictures are consistent

  This article mainly introduces C # to determine whether two pictures are consistent fast method, the need for friends can refer to the following

The code is as follows: #region to determine whether the picture is consistent  ///<summary> ///to determine whether the picture is consistent  ///</summary> ///<param name= " IMG "> Picture one </param> ///<param name=" BMP "> Picture two </param> ///<returns> is consistent </ returns>  public bool Issameimg (Bitmap img, Bitmap BMP)   { //size consistent   if (IMG. Width = = bmp. Width && img. Height = = bmp. Height)   { //Lock picture one 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 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); //Length not identical   if (length_i!= length_b)   {  return false; }  Else   { //Cycle judgment   for (int i = 0; i < length_i i++)   { /Inconsistent   if (imgvalue_i[i)!= Imgvalue _b[i])   {  return false; } }  return true; } }  else -{  return Fals e; } }  #endregion