Compression-compatible fragile and semifragile tamper detection
نویسندگان
چکیده
In this paper, we present two tamper-detection techniques. The rst is a fragile technique that can detect the most minor changes in a marked image using a DCT-based data hiding method to embed a tamper-detection mark. The second is a semi-fragile technique that detects the locations of signiicant manipulations while disregarding the less important eeects of image compression and additive channel noise. Both techniques are fully described and the performance of each algorithms demonstrated by manipulation of the marked images.
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تاریخ انتشار 2000