With the copying of digital media works problem increasingly serious, the issue of plagiarism identification becomes more and more important. The identification technology of text has substantively progressed, however, the identification technology of the digital images and other media have rarely progressed. In the paper, the plagiarism identification problem on digital image works has been researched, based on analyzing the plagiarism identification and copyright identification, the concept of copying amount and calculating method on digital image works have been presented, the same time, the copying identification method has been presented.
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