Optical image encryption based on binary Fourier transform computer-generated hologram and pixel scrambling technology |
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Authors: | Yong-Ying Wang Yu-Rong Wang Yong Wang Hui-Juan Li Wen-Jia Sun |
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Institution: | aOptics Department, School of Information Science and Engineering, Shandong University, Jinan 250100, Shandong Province, China |
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Abstract: | A new method of optical image encryption with binary Fourier transform computer-generated hologram (CGH) and pixel-scrambling technology is presented. In this method, the orders of the pixel scrambling, as well as the encrypted image, are used as the keys to decrypt the original image. Therefore, higher security is achieved. Furthermore, the encrypted image is binary, so it is easy to be fabricated and robust against noise and distortion. Computer simulation results are given to verify the feasibility of this method and its robustness against occlusion and additional noise. |
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Keywords: | Optical image encryption/decryption Computer-generated hologram Pixel-scrambling technology |
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