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中文摘要：
设计一种基于两种混沌序列和二代小波变换的彩色图像双水印算法。算法既嵌入鲁棒水印,又嵌入脆弱水印,既实现了版权保护作用又实现了图像认证功能。水印预处理过程中,采用两种混沌序列,提高了算法的安全性;水印嵌入过程中,使用了运算速度很快的二代小波变换,提高了算法的效率;中低频使用不同算法自适应地嵌入水印,加强了算法的隐藏效果。仿真实验表明,该算法既能进行版权保护又能进行图像认证,且隐藏效果好、运算速度快、安全性高。
英文摘要：
Two function digital watermarking algorithm of color image is presented based on the second generation wavelet transform and two kinds of chaotic sequence. The algorithm has realized two functions of image copyright protection and authentication by embedding robust watermark and fragile watermark. The algorithm has highly security for using two kinds of chaotic mappings and Arnold to scramble the watermark image at the same time. The algorithm has highly efficiency for using the second generation wavelet transform. The algorithm with very good hidden effect because of the low frequency and middle frequency using different algorithm adaptively embed watermark. Simulation results show that the algorithm can be usefu not only for copyright protection but also for image authentication,the hidden effect is good,and has highly efficiency and security.
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The clustering model and algorithm of PPI network based on propagating mechanism of artificial bee c
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