The algorithm adopts biorthonomal wavelet for watermarks embedding, designs a quantization function, by which watermarks are embedding in biorthonomal wavelet transform coefficients. The paper studies chaos sequence and chaos key, and locates watermarking positions by chaos keys.
该算法采用双正交小波变换作为频域水印嵌入工具，设计了一个量化函数，通过该量化函数将半易损数字水印嵌入到双正交小波域，对混沌序列和混沌密钥进行了分析，采用混沌密钥来确定水印的嵌入位置。
参考来源 - 盲检测图像数字水印技术研究To resolve the existing security problem, a chaotic key which is based on image feature is used to control the embedding of fragile watermark.
为解决原算法存在的安全问题,提出利用基于图像特征的混沌密钥控制易损水印的嵌入。
参考来源 - 基于图像特征的易损水印技术·2,447,543篇论文数据，部分数据来源于NoteExpress
在数字混沌保密通信研究的基础上，提出了一种多混沌方程协助生成密钥序列的新方案。
Based on the research of digital chaos communications, a new method that generates key sequences by using more chaotic equations is presented.
以双混沌互扰系统作为序列密钥发生器，提出一种改进的二值序列量化方法。
Taking dual chaotic inter-perturbed system as sequence key generator, an improved quantization method for converting chaotic sequence to binary sequence was put forward.
混沌信号高度的初值敏感性，使得密钥具有非常大的取值空间。
The key space is considerable large because of chaotic signal's high sensitivity to initial values.
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