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題名: Optical Security by Use of a Randomly Selected Binary Phase Code
作者: Wang, Bor;Sun, Ching-Cherng;Su, Wei-Chia
貢獻者: 光電科技研究所
日期: 1999
上傳時間: 2014-04-01T03:57:30Z
出版者: SPIE--The International Society for Optical Engineering.
摘要: An optical security system using a random selected binary phase code is proposed. A random binary phase encoded light is incident on a holographic recording material and writes gratings in the material with a reference plane wave. The recording material can be regarded as an optical lock while the phase code acts as the key. As the pixel number is 5 X 20, the decryption probability is less than 10-10 when arbitrary phase code is used for decryption. The decryption probability decreases dramatically as the pixel number increases. Furthermore, the security system performs good tolerance to data loss of the phase code.
關聯: Algorithms, Devices, and Systems for Optical Information Processing III, Proc. SPIE., 3804: 188-193
顯示於類別:[光電科技研究所] 會議論文

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