基于奇异值分解的Contourlet域三维彩码鲁棒水印算法

移动互联网时代,三维彩码因其技术优势和便捷性成为条码发展的新趋势,但其版权保护问题也随之而来。结合奇异值分解提出了一种基于Contourlet变换域的鲁棒水印算法,首先对载体图像的蓝色分量进行Contourlet变换,然后对其产生的逼近子带进行奇异值分解再嵌入水印。实验结果表明提出的算法有良好的不可见性和鲁棒性,即使在水印嵌入强度微小、几乎不改变宿主图像的同时依然能很好地提取水印,不仅可对三维彩码进行版权保护,而且对常见攻击如JPEG压缩、噪声、滤波、旋转、裁切等具有较强的鲁棒性。

A Robust Algorithm of Color Code Image Watermarking Based on Singular Value Decomposition in Contourlet Domain

In mobile internet era,three-dimensional color code has becoming the new trend of the code for its technological superiority,however,its copyright protection has arised.In this paper,combined with singular value decomposition(SVD),a robust algorithm based on Contourlet transform is proposed.After performing the Contourlet transform on the green channel,approximation sub-band of host image is performed SVD to emb the watermark.The experimental results show that the proposed algorithm is robust and invisible ...