中文摘要：

随着信息技术及互联网技术的快速发展,数字图像正逐渐成为传递和接收信息的主要载体。数字图像置乱技术能达到图像信息的保护及实时使用的目的。文章从数字图像置乱的理论及概念入手,对几种具有代表性的数字图像置乱算法进行分析、比较及改进,阐述了各自的优缺点,且通过实验实现了不同置乱方式的效果。

英文摘要：

With the development of information technology and the Internet,Digital images gradually has become the main carrier of the transmission and receiving of information. Digital image scrambling technology can play a more and more important role in the protection of image information and achieve the purpose of real-time use. With the theory and concept of digital image scrambling,this paper analyzes,compares and summarizes the principles of several representative digital image scrambling algorithms,and their respective merits and demerits are elaborated,at last,the experimental results indicate the effect of different scrambling methods.