基于分块技术的置乱算法

The Scrambling Algorithm Based on the Block Reconstruction Technology

置乱算法在数字水印的研究中,具有重要的作用,是水印图像预处理的重要组成部分。置乱效果的好坏、安全性将影响到数字水印算法的鲁棒性和安全性。对基于分块技术的随机均匀置乱算法提出改进,实现了安全性更高、置乱效果更好、更具一般性的基于分块技术的置乱算法。

The scrambling algorithm plays an important role in the study of the watermark and is the essential composing parts of the watermark image pretreatment. Whether the scrambling effect will stand or fall and the security will impact the robust and the security of the digital watermark algorithm. The paper improves the random uniformity scrambling algorithm based on the image block reconstruction technology and implements the scrambling based on the block reconstruction technology, In this way, not only the security of the scrambling algorithm and the effect of scrambling are reinforced, but the application are made to own the universality.