基于混沌的数字图像置乱算法及参数优化  

New digital image scrambling algorithm based on chaos and its parameters optimization

作　　者：段文文[1] 李碧[2] 

机构地区：[1]华南理工大学电信学院,广州510641 [2]广东外语外贸大学思科信息学院,广州510420

出　　处：《计算机应用研究》2011年第1期329-331,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(60673191);广州市科技计划项目(2009J1-C401)

摘　　要：为了提高图像置乱性能,把具有非周期性、遍历性、伪随机性和对初值的高度敏感性的混沌系统应用到图像置乱中,提出了基于混沌的数字图像置乱算法。为了得到最好的置乱效果,采用混合蛙跳算法来优化置乱算法的参数。通过算法的仿真实验表明该算法具有较好的置乱效果,并具有较强的抗剪切攻击和抗噪声攻击能力。In order to improve performance of image scrambling, applied chaos system to image scrambling, which was ex- tremely sensitive for initial value, aperiodic, ergodic and pseudo-random. Then proposed a new digital image scrambling algo- rithm based on chaos. In order to get the best scrambling effect, used shuffled frog leaping algorithm to optimize parameters of the proposed algorithm. The emulation experiments show that the proposed algorithm has good scrambling effect and strong ability in resisting shear attacks and noise attacks.

关 键 词：图像置乱 混沌 数字水印 混合蛙跳算法 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]