混沌变异进化规划及在数字水印中的应用

A chaos variation evolution programming and it's application in digital watermark

针对现有的数字水印算法都是根据人类视觉模型理论来寻找嵌入位置的问题,本文提出一种新的变尺度进化规划算法。该算法根据混沌序列的特性,将混沌引入到进化规划的变异算子中,并利用提出的进化规划算法来寻找数字图像中水印的嵌入部位。理论分析和实验结果表明,该算法具有良好的快速收敛性和鲁棒性,并可以自适应寻找水印的最优嵌入部位,以最大限度地减少因水印的嵌入而对原始图像造成的破坏。

The existing digital watermark algorithms are all seek the embedding position according .to the human vision model theory. In view of the question, this article proposes, an intelligent embedding algorithm based on mutative scale chaos evolution programming. Based on the chaos sequence characteristic, the proposed algorithm introduces chaos into the variation operator of the evolution programming and seeks the embedding position. Theory analysis and experiment are presented to show that this algorithm can seek the best embedding position auto-adaptively. Thereby, the destruction for the original image is reduced to the minimum because of the watermark embedding.