Two image encryption methods with hiding effect based on moire pattern
In the existing methods of image encryption based on moire phase modulation the superposed moire pattem can be reconstructed periodically.but the deformed laver leaks the profile of the secret image In order to solve the problem of leaking secret.some methods modifv the reference layer to aperiodic structure and gain hiding effect However.the superposed moire pattem loses the feature of periodic reconstructing Some methods improve it by adding random noise but the noise appears in moire pattern and decreases the quality of moire pattem In this paper.two methods are proposed to ease the leaking problem In the first proposed method.the deformed layer is scrambled with vertical lines of random length In the second proposed method.grid is defined as basic structure and its count of black pixels in deformed layer is varied with cover image to hide the secret Furthermore.we define average contrast to evaluate the quality of superposed moire pattern Compared with deformed layers in pre- vious methods.the deformed layers generated by the proposed methods have hiding effect as well as they guarantee periodic reconstructing of moire pattern without random noise.
Moire phase modulation image encryption scramble
国内会议
湖北恩施
英文
1-10
2014-09-13（万方平台首次上网日期，不代表论文的发表时间）