Digital Image Scrambling Encryption Method Based on Visual Association
Aiming at the problems of the existing digital image encryption methods,such as poor encryption effect,long encryp-tion time and weak anti-attack ability,a digital image scrambling encryption method based on visual association is proposed.Using the principle of wavelet transform to extract the visual association information-texture feature information of digital images,based on this,the digital image key is generated by combining internal and external keys with the application of Henon and Logistic mapping algorithms,and the digital image scrambling rules are established by integrating the hierarchical rotation scrambling mode and the cyclic moving scrambling mode.Digital image scrambling encryption and decryption program are programmed based on key and scrambling rules,which can be realized by executing the program.The experimental results show that the minimum fixed point ratio of the encrypted image is 4.12％,the minimum average time of digital image encryption is0.89s/frame,and the decoding ratio of scrambled digital image key is 4％.
万方数据
维普
