Study on Multi-Image Encryption Mechanism Based on Multiplexing Technology Integration with Rate Distortion Optimization

In order to overcome these defects such as crosstalk effects and distortion in current multi-image encryption mechanism,the multi-images parallel encryption algorithm is proposed based on multiplexing technology integration with rate distortion optimization controlling. The multiplexing technology is designed based on DCT( Discrete Cosine Transform) and Zig Zag Scanning to take multi-images into one composite permutation image. And the Structural similarity is introduced to design the rate distortion controlling optimization method to embed into the multiplexing technology for optimizing the value of distortion to reduce the distortion.Then 2D Arnold map is used to per mutate the composite permutation image. The double encryption function is constructed by chaos phase mask to diffuse the permutation image. Simulation results are showed that this encryption mechanism is highly secure with excellent quality and strong key sensitivity,compared with current multi-image encryption algorithm,the decryption effects of the mechanism in this paper is best to effectively eliminate the crosstalk effects.