Acta Physica Sinica, Volume. 68, Issue 24, 240503-1(2019)
Fig. 1. Optical setup of multiple-image encryption process. SLM is spatial light modulator,
is focal length,
is the distance of Fresnel diffraction,
is the rotation angle of CCD,
is angle between object light O and reference light R.
多图像光学加密系统(SLM是空间光调制器,
是透镜焦距,
是菲涅耳衍射距离,
表示CCD旋转后与
Fig. 3. (a)-(h) Encrypted interference fringes corresponding to 8 original images.(a)—(h)8幅原始图像对应的加密干涉条纹
Fig. 6. (a) Decrypted spectrum with right key , where F1-F8 are filters; (b) decrypted spectrum with key . (a) 为解密密钥时频谱图, 其中F1—F8为相应的滤波器; (b) 为解密密钥时频谱图
Fig. 7. (a)-(h) 8 Decrypted images with all right keys.(a)—(h) 8个图像的正确密钥解密结果
Fig. 8. Decrypted results with wrong key
: (a) For original image “A”; (a
Fig. 9. Decrypted results with wrong key nm: (a) For original image “B”; (b) for original image “学”. (a)波长 nm其他密钥正确时原始图“B”的解密图像; (b)原始图“学”的解密图像
Fig. 10. The
dependence on
when the dynamic range of
is 0-π.
当
的动态范围为
时原始图“息”的
Fig. 11. The dependence on when the dynamic range of is 0-1.5π. 当 的动态范围为 时原始图“息”的 随菲涅耳衍射距离 的变化
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Xue-Guang Wang, Ming Li, Na-Na Yu, Si-Xing Xi, Xiao-Lei Wang, Li-Ying Lang.
Received: Sep. 8, 2019
Accepted: --
Published Online: Sep. 17, 2020
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