基于分块奇异值水印算法研究

随着信息技术的飞速发展,信息隐藏与保密技术日渐受到人民的重视.数字水印是版权保护的重要手段之一,目前已经得到广泛的研究与应用.提出了一种基于分块奇异值的水印算法,运用奇异值分解方法与图像分块技术,对水印进行嵌入与提取.通过图像分块,降低了对图像奇异值分解的过程,加速了数字图像水印的嵌入和提取,最后用VC＋＋实现了该过程,并验证了该算法的鲁棒性.

Singular Value Watermarking Algorithm Based on Block-SVD

With the development of the digital technology,information hiding technology is valued.The digital watermarking as an important means of copyright protection has been widely research and application.This paper proposes a new based on Block-SVD of the watermarking algorithm is proposed,using the singular value decomposition method and combining with the image block technology,completed the watermark embedding and extracting.Through the image block,it reduces the singular value decomposition of image of the process,to accelerate the digital image watermarking embedding and extracting,finally with VC＋＋ is realized the process,and shown that the proposed algorithm is robust.