A Digital Image Watermark Algorithm Using Block-based DCT
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Abstract:
A new algorithm using digital image as watermark is presented. The block-based DCT coefficient of watermark is embedded in image intermediate frequency randomly. It enhances the security and robustness of embedded watermark greatly.
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雷荣 陶青川 蒲亦非 龙建忠.一种基于分块DCT的数字图像水印算法[J]. Journal of Terahertz Science and Electronic Information Technology ,2003,1(1):