A Scrambling Scheme of Image Based on Semi-space Domain
Tao Li, Tianyun Yan · Jisuanji yingyong yanjiu · 2006
Due to the good properties of chaotic sequences including their sensitive dependence on initial value,pseudorandom,ergodic,an image scrambling method,called semi-space domain,based on two times 1-D DCT and chaos maps is pre-(sented) in this paper.The procedure of the algorithm is mainly divided into two steps:first,an original image is decomposed for its first variable by 1-D DCT,then by chaos system,a scrambling result is achieved.After by inverse 1-D DCT for the scrambling result,repeating the same procedure for the second variable,the final scrambling result is obtained.At the last part of this paper,the experimental studies are carried out on certain standard test images.The experimental results show that the new method is effectiveness.