Image Authentication with Dual Watermarks and Block Wavelet Transform for IP Networks
碩士 === 國立清華大學 === 資訊工程學系 === 89 === Digital watermarks have been proposed recently as a means for copyright protection of multimedia data. In this paper we emphasize that security of an image. A timestamp can record the original message’s digest and authentication time to prove...
Main Authors: | CHANG, WI CHUNG, 張維中 |
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Other Authors: | Long-Wen Chang |
Format: | Others |
Language: | en_US |
Published: |
2001
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Online Access: | http://ndltd.ncl.edu.tw/handle/61112237079322381932 |
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