Phase imaging with rotating illumination简 |
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引用本文: | 王海燕,刘诚,潘兴臣,程君,朱健强.Phase imaging with rotating illumination简[J].Chinese Optics Letters,2014(1):5-8. |
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作者姓名: | 王海燕 刘诚 潘兴臣 程君 朱健强 |
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摘 要: | In holographic encryption, double random-phase encoding in the Fresnel domain (DRPEiFD) is a preva- lent encryption method because it is lensless and secure. However, noises bring adverse effects during decryption. In this letter, we introduce quick-response (QR) coding during encryption to resist noises. We transform the original information into a QR code and then enerypt the code as a hologram through DRPEiFD. To retrieve the input, we deerypt the hologram in the opposite manner to the encryption and subsequently obtain a QR code with noises. By scanning this code with proper applications in smart- phones, we can obtain a noise-free retrieval. Numerical experiments and images scanned by a smartphone are shown to validate our proposed method.
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关 键 词: | 加密方法 快速响应 全息图 抗噪音 安全 双随机相位编码 智能手机 加密过程 |
Secure and noise-free holographic encryption with a quick-response code |
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Institution: | [1]Department of Precision Instruments, Tsinghua University, Beijing 100084, China [2]Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China |
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