Encryption and decryption digital holograph with Arnold transformation
Dongmei Wang · Journal of Zhejiang University of Technology · 2004
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.