An Efficient Image Encryption and Hiding Method Applied by Double Random Phase Encoding

Compared with digital methods, image hiding methods by optical ways have many advantages such as high processing speed, high parallel, high encryption dimension etc al. A novel efficient image encryption and hiding method applied by double random phase encoding technique is discussed in this paper. First, the performance of existing optical image hiding systems is analyzed; then specific statistical detection methods to the optical image hiding system are discussed; then extracting attacks to the optical image hiding system are analyzed; finally novel optical image hiding methods by technique of double random phase encoding and digital holography are given out.