Watermarking Algorithm Based on Best Permutation
Huang Zhi-gao · Communications technology · 2010
The basic concept of digital image permutation is given,and through the quantitative analysis of permuted image,a digital permutation algorithm based on Arnold transform of 2d chaotic mapping is proposed.By analyzing the period and control parameters of Arnold transform,the best permutation of digital image is realized,and the permuted image watermarking would reduce the correlation of original pixels,and the error bits of extracted watermarking are dispersed as well,Thus the resistance of the digital watermarking algorithm to shear attack is significantly raised.