摘要
图像的隐藏与伪装技术是图像安全方面一个非常重要的研究领域。其中常用的图像置乱算法实现较为复杂,基于Zig-zag变换的思想提出了一种新的数字图像置乱算法,并构造了两个具体的置乱变换方法。通过算法的仿真实验和结果分析表明该算法具有较好的置乱效果及较大的周期,并具有一定的抗攻击能力,从图像信息安全性及算法的时间复杂度方面分析,该算法优于Arnold等变换,将该类算法用于图像加密有一定的应用价值。
Image hiding and disguising technology is a very important research field in image security, but the common image scrambling algorithm is comparatively complicated in realization. A new digital image scrambling algorithm based on Zigzag transformation is proposed, and two scrambling transformation methods are specifically constructed. The emulation experiment and its results＇ analysis show that the proposed algorithm has good scrambling effect and larger periods with certain ability in anti-attack. This algorithm is better than Arnold transformation in image information security and time complexity, and has the potential application value in image scrambling encryption.
出处
《计算机应用与软件》
CSCD
2009年第3期71-73,87,共4页
Computer Applications and Software
基金
陕西省自然科学基金资助项目(2004F10)
关键词
Zigzag变换
图像置乱
置乱度
Zigzag transformation Image scrambling Disorder degree
