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首页> 外文会议>International Symposium on Computer and Information Sciences(ISCIS 2004); 20041027-29; Kemer-Antalya(TR) >A Novel Watermarking for Image Security
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A Novel Watermarking for Image Security

机译：一种新颖的图像安全水印

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摘要

This paper proposes a novel robust image watermarking in which a logo watermark is embedded into the discrete multi-wavelet transform domain (DMWT) of an image. It is found that there are two characters in the low frequency band of the multi-wavelet domain. One is that the mean of corresponding coefficients in four subblocks is more stable than a single coefficient, and the other is that it is easily recognized whether a coefficient point is a smooth point or not by the difference between two corresponding coefficients in two subblocks. According to these unique characters, the watermark is embedded into the multiwaelet doman by quantizing the mean of corresponding coefficients in four subblocks. The quantization interval is decided by the character of the HVS based on the second character. Experimental results show that the proposed method is superior to the traditional wavelet-based quantization method.
机译：本文提出了一种新颖的鲁棒图像水印，其中将徽标水印嵌入图像的离散多小波变换域（DMWT）中。发现在多小波域的低频带中有两个字符。一个是四个子块中相应系数的均值比单个系数更稳定，另一个是通过两个子块中两个相应系数之间的差可以容易地识别出系数点是否为平滑点。根据这些独特的特征，通过量化四个子块中相应系数的均值，将水印嵌入到多瓦小域中。量化间隔由基于第二个字符的HVS的字符决定。实验结果表明，该方法优于传统的基于小波的量化方法。

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