A chaotic image encryption method based on control word is designed to improve the chaotic perturbation model and solve the finite precision problem in chaotic encryption.

论文设计了基于控制字的混沌图像加密方法，完善了混沌扰动模型，更好地解决了混沌加密有限精度问题。

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The chaotic image encryption technique is Presented in this paper; some advantages with chaotic technique and some valuable Problems for further research were illustrated.

本文介绍了混沌加密技术和利用混沌技术进行图像加密的方法，并阐述了图像混沌加密的特点和一些值得进一步研究的问题。

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In this method, the original image 's feature is extracted by using wavelet transform and quantization. The feature information is changed into watermark by the chaotic sequence encryption.

该方法在一定的量化标准下利用小渡变换提取图象的特征信息，通过混沌序列对其加密生成数字水印。

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