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中文摘要：
一个基于 hyperchaos 的 watermarking 算法为图象在小浪领域被开发。算法基于分离小浪变换并且把通讯模型与方面信息相结合。我们利用一个合适的规模因素放大主机图象，然后为根据主机图象的规模版本嵌入数字 watermarking 构造 cosets。我们的计划做在无法感知和坚韧性之间的折衷，并且完成安全。抽取算法是没有原来的主人，检索水位标的一个盲目察觉算法。图象。另外，我们与 hyperchaotic 顺序为水位标加密建议一个新方法。这个方法克服混乱顺序的小关键空间的缺点并且改进水位标安全。模拟结果显示算法是提供好坚韧性和无法感知的一个正常 watermarking 方法。中国(60574036 ) 的国家自然科学基础支持的 CLC 数字 TP391 文件代码 A，为中国(20050055013 ) 的高等教育的博士节目的专业化研究资金，和为中国(NCET ) 的大学里的新世纪优秀才能的节目。
英文摘要：
A hyperchaos-based watermarking algorithm is developed in the wavelet domain for images. The algorithm is based on discrete wavelet transform and combines the communication model with side information. We utilize a suitable scale factor to scale host image, then construct cosets for embedding digital watermarking according to scale version of the host image. Our scheme makes a tradeoff between imperceptibility and robustness,and achieves security. The extraction algorithm is a blind detection algorithm which retrieves the watermark without the original host image. In addition,we propose a new method for watermark encryption with hyperchaotic sequence. This method overcomes the drawback of small key space of chaotic sequence and improves the watermark security. Simulation results indicate that the algorithm is a well-balanced watermarking method that offers good robustness and imperceptibility.
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