Using the sensitivity to the initial conditions and parameters of mixed-optical bistable chaotic sequence, we have a new scrambling algorithm about watermarking image.
利用混合光学双稳混沌序列的伪随机性和初值敏感性，提出一种用于数字水印中的水印图像置乱算法。
Firstly, it can be obtained 2-value watermark image by PDF417 coding to watermark information and chaotic sequence scrambling.
首先将水印信息进行PDF417编码，并在密钥控制下进行混沌序列置乱后得到二值水印图像；
Based on the analysis of the defect of the traditional iterated image scrambling, a new image scrambling algorithm was proposed based on chaotic sequence and bit exchange.
在分析传统迭代型图像置乱方法不足的基础上，提出一种新的基于混沌序列和位交换的图像置乱算法。
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