Gray-Image Encryption Using Multiplex Encoding Method

This paper proposes encoding the way and dealing with gray-image of multiplex double random phase technique. The true image is stored in a multiplex encoding that is so-called encodegram, and then it can be reconstructed by using proper random phase masks and correct retrieval protocol. It can then increase security and robustness of the true hidden image, and interrupt unauthorized receivers. Finally, we will verify this method encrypted in the image with experimental simulation.