摘要
对标准ZigZag变换进行改进,提出一种基于扩展ZigZag变换与位交换的图像置乱算法。算法在将图像作扩展ZigZag变换后,根据图像行的奇偶性采用不同的位交换运算方案,通过迭代完成图像置乱。仿真实验结果表明该算法具有良好的图像置乱效果,亦可适用非方阵图像,对于常见的攻击具有较强的抗干扰能力。
The standard ZigZag transformation rule is improved inthis paper, and an image scrambling algorithm based on extended ZigZag transformation and bit exchange is proposed. After the extended ZigZag transformation being made on the image, different bit exchange meth ods are applied to the lines then according to their parity, and the image scrambling is completed by iteration. Simulation experimental results show that the algorithm has good image scrambling effect and fits the＇nonsquare image as well, it has fine antiinterference capability against common attacks.
出处
《计算机应用与软件》
CSCD
北大核心
2012年第10期310-313,共4页
Computer Applications and Software
基金
江苏省自然科学基金项目(BK2007050)
关键词
图像置乱
扩展ZigZag变换
位交换
鲁棒性
Image scrambling Extended ZigZag transformation Bit exchange Rol^ustness
