National Changhua University of Education Institutional Repository : Item 987654321/18236
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题名: Improvement of the Shift Tolerance in the Double Random Phase Encoding Encryption System
作者: Wang, Bor;Sun, Ching-Cherng;Su, Wei-Chia
贡献者: 光電科技研究所
日期: 1999
上传时间: 2014-04-01T03:57:19Z
出版者: SPIE--The International Society for Optical Engineering.
摘要: Double random phase encoding technique is a valuable and effective method for optical image encryption. However, a precise alignment is required when optical setup is performed. In this paper, we investigate the shift tolerance property of the technique. The theory of the robustness to data loss of the encrypted image is proposed. According to the theory, we propose a simple and novel method to improve the shift tolerance of the decrypting phase mask. Both theory and computer simulation are presented.
關聯: Algorithms, Devices, and Systems for Optical Information Processing III, Proc. SPIE., 3804: 215-221
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