Algorithm for robust blind image watermark
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摘要: 鲁棒性数字水印特别是盲水印是保护数字作品版权的重要手段.提出一种针对彩色图像的鲁棒性盲数字水印方法.该方法根据灰度图水印信号序列,结合宿主图像DCT(Discrete Cosine Transformation)系数相关性自适应地嵌入水印信号,提取水印时不需要原始宿主图像,可以批量处理,适用在Internet上检测侵权数字作品.实验结果证明该方法对JPEG有损压缩、裁减等处理操作具有较好的鲁棒性.Abstract: Based on DCT(Discrete Cosine Transformation) domain, an algorithm for robust blind color image watermark was presented. It inserted adaptively a gray image for watermark to a color image according to block correlation of DCT coefficients, and extracted watermark without the original image. It can be used to detect the piratical digital works on internet. Experimental results demonstrate that this algorithm is transparent and robust. It is strong to withstand JPEG compression, cropping and some other image processing attacks.
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