진폭 마스크와 2D 카오스 함수를 이용한 다중 이미지 광학 암호화 = Optical encryption of multiple images using amplitude mask and 2D chaos function

다국어 초록 (Multilingual Abstract)

Object image using DRPE(Double Random Phase Encryption) in 4f system is encrypted by space division method using amplitude mask. However, this method has the weakness for the case of having partial data of amplitude mask which can access the original image. To improve the security, we propose the method using the 2 dimension logistic chaos function which shuffles the encrypted data. It is shown in simulation results that the proposed method is highly sensitive to chaos function parameters. To properly decrypt from shuffled encryption data, below 1e-5 % errors of each parameter should be required. Thus compared with conventional method the proposed shows the higher security level.