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| 几种光学图象相位加密方法的比较 | |
| 引用本文： | 张培琨,李育林,刘家英,刘继芳,忽满利,贾宏志.几种光学图象相位加密方法的比较[J].光子学报,1999,28(3):223-226. |
| 作者姓名： | 张培琨 李育林 刘家英 刘继芳 忽满利 贾宏志 |
| 作者单位： | 1. 中国科学院西安光学精密机械研究所光学室,西安,710068;西安应用光学研究所,西安 2. 中国科学院西安光学精密机械研究所光学室,西安,710068 3. 西安应用光学研究所,西安 4. 西安电子科技大学五系,西安,710068 |
| 摘 要： | 本文分析比较了多种实现光学图象相位加密的方法,发现不同方法获得的加密图象有不同类型的噪音分布.无论加密相位是随机相位模板、浑沌序列的相位列阵,还是用相位重构迭代算法计算的结果,它们都能起到加密图象的功能.解密图象的质量或被相关识别的能力与解密过程中所使用正确解密相位的不同部分以及高低频分量多少有关,且其依赖程度是由不同的加密方法自身决定. |
| 关 键 词： | 光学图象 相位分布 加密和解密 图象质量 相关识别能力 |
| 收稿时间： | 1999-01-25 |
| 修稿时间： | 1999-01-25 |
THE COMPARING STUDY ON VARIED PHASE ENCRYPTION METHODS FOR OPTICAL IMAGE SECURITY |
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| Zhang Peikun,Li Yulin,Liu Jiaying,Liu Jifang,Hu Manli,Jia Hongzhi.THE COMPARING STUDY ON VARIED PHASE ENCRYPTION METHODS FOR OPTICAL IMAGE SECURITY[J].Acta Photonica Sinica,1999,28(3):223-226. | |
| Authors: | Zhang Peikun Li Yulin Liu Jiaying Liu Jifang Hu Manli Jia Hongzhi |
| Institution: | 1. Xi’an Institute of Optics & Precision Mechanics, Chinese Academy of Science, Xi’an 710068;2. Xi’an Applied Optics Institute, Xi’an 710065;3. Department of Applied Physics, Xidian University, Xi’an 710068 |
| Abstract: | In this paper,a variety of encryption methods for optical image security are comparatively studied.According to the different method,the encrypted image can be transformed into white or color noise.The encryption phase can be the random phase or the chaotic sequence as well as the calculated result by used of the phase retrieval algorithm.The image quality and the correlative recognition ability of decrypted image are affected by the different part of the decryption phase and the amount of high frequency or low frequency used in the process of decryption. |
| Keywords: | Optical image Phase distribution Encryption and decryption Image quality Correlative recognition ability |
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