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Checksum for Image comparison

Gupta Nitin
Greenhorn

Joined: Feb 05, 2007
Posts: 7
what is the checksum method of image comparison and how do i do it in Java?
Ulf Dittmer
Marshal

Joined: Mar 22, 2005
Posts: 42951
    
  72
I'm not quite sure what you're getting at, but generating a checksum of a file (image or otherwise) would involve calculating the sum of all bytes in that file. If you do that for two files, chances are good that the files will be identical if the checksums are identical. Wikipedia has more to say on the subject.
 
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