摘要
提出了用于M×N数字图像的二维Arnold变换公式,指出其变换周期等于MAXN×MAXN(其中MAXN=MAX(M,N))数字图像Arnold变换的周期;分析了二维Arnold变换用于数字图像加密的弊端,针对于其不足,提出将Arnold变换用于置乱虚拟光学方法生成的数字全息图,以增强加密效果。
In the paper a formula of Arnold transformation for \%M×N\% image is presented ,the periodicity of that is the same as the one of \%MAXN×MAXN(MAXN\%=MAX\%(M,N)\%)image's; The disadvantages of Arnold transformation on images are analyzed. To enhance the encrypt security of the Arnold transformational image, a novel method which transforms digital holograms generated by virtual optics is proposed.
出处
《浙江工业大学学报》
CAS
2004年第3期272-276,共5页
Journal of Zhejiang University of Technology
关键词
信息安全
二维Arnold变换
置乱变换
虚拟光学
数字全息图
information security
2-dimensional Arnold transform
scrambling transform
virtual optics
digital hologram
