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| A novel fragile watermark technique based on image feature |
| Zhong Hua; Liu Fang; Jiao Licheng |
| National Key Lab. for Radar Signal Processing, Xidian University,Xi’an 710071,China |
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Abstract In this paper, a novel fragile watermark technique is proposed, which is based on the method of Yeung-Mintzer’s (1997). To resolve the existing security problem, a chaotic key which is based on image feature is used to control the embedding of fragile watermark. Theoretical analysis and experimental results demonstrate its effectiveness in resisting possible attacks. And because the watermark is embedded in pixel-wise order, the technique has good ability of detecting local alterations.
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Received: 20 June 2002
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2003, Vol. 25 
