图像是网络多媒体传播的重要对象，因此网络内图像的所有权、版权认证及内容完整性问题也就成了网络安 全亟待解决的问题。为了解决该问题，本文提一种Logistic 混沌映射和小波分解相结合的数字水印算法。在水印加密与水印 嵌入过程中同时引入混沌映射，使水印的安全性能得到了提升。

The image is the important object of media propagation on the internet. The problem of ownership copyright authentication and content integrity of the image on the internet need to be solved urgently. In order to solve this problem, this paper presents a watermarking algorithm combined with Logistic chaotic mapping and IWT. Improve the safety performance of the watermarking algorithm with using Logistic chaotic mapping both in the process of watermark encryption and watermark embedding.