A zero-embedding algorithm for multiple watermarks
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摘要: 根據零水印概念,提出一種基于小波和混沌的多重水印零嵌入算法.該算法利用小波零樹結構構造匹配矩陣,然后用其加載已由混沌空域置亂的多重二值圖像水印.算法實現了多重水印的零嵌入,從根本上保證了水印的不可見性,并能夠進行分級盲檢測.實驗表明,該方法魯棒性較強,安全性良好,具有可靠性和可行性.Abstract: According to zero-watermarking, a zero-embedding algorithm for multiple watermarks was proposed based on wavelet and chaos. Matching matrixes were structured with wavelet zerotree structure, and used to load multiple binary watermarks scrambled by chaotic sequences. The zero-embedding of multiple watermarks ensured the watermarks' invisibility thoroughly, and could implement a blind detection by stage. Experimental results show that the technique has stronger robustness, better security, dependability and feasibility.
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Key words:
- multiple watermarks /
- embedding algorithm /
- wavelet zerotree structure /
- chaos scrambling
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