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DCT水印中拉伸系数与嵌入位置的选择 被引量:13

THE CHOICE OF SCALING PARAMETER α AND EMBEDDING POSITION IN DCT WATERMARK
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摘要 DCT域如何确定嵌入位置与拉伸因子α是影响数字水印稳健性的关键。对比了不同嵌入位置和拉伸因子对数字水印鲁棒性的影响,并且据此给出了一种DCT域数字水印的嵌入位置和拉伸因子的确定方法。实验结果表明,该方法简单有效。 In DCT domain, the key for watermarking robustness is to determine the embedding position and scaling parameter α. In this paper,we compare the influence of robustness of different embedding position and different scaling parameter α. According to which, we give a method to determine the embedding position and scaling parameter α. The results indicate that the method is simple and effective.
出处 《计算机应用与软件》 CSCD 北大核心 2006年第9期124-127,共4页 Computer Applications and Software
关键词 数字水印 嵌入位置 拉伸因子 稳健性 Digital watermarking Embedding position Scaling parameter α Robustness
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