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Adaptive blind authentication watermarking algorithm based on measures of wavelet coefficients
Author(s): 
Pages: 49-52
Year: Issue:  10
Journal: Electronic Measurement Technology

Keyword:  认证水印小波变换混沌系统自适应;
Abstract: 本文提出了基于图像内容自嵌入功能的认证水印算法.本算法的新颖之处在于能区分图像内容、水印还是两者同时被篡改.算法由原图像高7位的一级小波低频系数量化得压缩图像,转换成二进制作为水印,混沌置乱加密后嵌入到原图像的LSB.认证时,由认证图像高7位制作的水印与提取水印的差值来确定图像是否遭到窜改,可定位篡改位置.实验结果表明:与Y-M算法相比峰值信噪比提高了5个dB,与WONG算法相比峰值信噪比提高了3...
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