用于版权保护的小波域鲁棒图像水印
Robust Image Watermarking in the Wavelet Domain for Copyright Protection
摘要：
本文提出了一种新的小波域图像水印算法。其思想是将水印数据隐藏在块分割图像的块中。基于这一思想，提出了两种将水印信息嵌入到每个块的低通小波系数中的方案。由于所提出的方法的低计算复杂性，该算法可以实现在实时的。实验结果表明，该方法具有较好的不可感知性，对滤波、JPEG压缩、剪切、加噪和几何失真等攻击具有较强的鲁棒性。
英文摘要：
In this paper a new approach to image watermarking in wavelet domain is presented. The idea is to hide the watermark data in blocks of the block segmented image. Two schemes are presented based on this idea by embedding the watermark data in the low pass wavelet coefficients of each block. Due to low computational complexity of the proposed approach, this algorithm can be implemented in real time. Experimental results demonstrate the impercepti-bility of the proposed method and its high robustness against various attacks such as filtering, JPEG compres-sion, cropping, noise addition and geometric distortions.
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