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A DCT-based Digital Watermarking Algorithm for Images
Author(s): 
Pages: 45-47
Year: Issue:  12
Journal: Electronic Engineer

Keyword:  信息安全信息隐藏数字水印混沌置乱DCT;
Abstract: 提出了基于DCT(离散余弦变换)域的盲水印算法.盲提取的实现一般会降低水印的鲁棒性和不可见性.算法设计的关键是尽量减少这种损失,使其达到应用的要求.采取以下办法来提高算法的性能:使用混沌置乱对水印进行预处理,提高算法的鲁棒性;利用DCT系数间的关系并且通过反复的实验选择DCT系数,在鲁棒性与不可见性之间得到较好的折衷.实验表明该算法的性能达到了设计要求.
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