本文的水印方法借助扩频水印的思想,通过量化函数对版权保护图像的小波变换系数进行量化,产生的二值序列作为水印。
This paper borrows the idea from spread spectrum watermark, quantizes the wavelet transform coefficients the copyright protected image to produce a binary sequence, which is just the watermark.
在分析了自适应小波变换和扩频特性关系的基础上,提出一种基于小波变换的扩频数字水印算法。
The relation between the digital watermarking and spread-spectrum was analyzed at first, A spread-spectrum adaptive digital watermarking scheme based on the wavelet transform was proposed.
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