A Robust Optical Encryption Method for Three-Dimensional Object Based on the Fresnel Transform

• 作者: Di Wu Hongbo Zhang Weimin Jin Xin Yang Yinghong Liu
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 数学
• 关键词: OPTICAL ENCRYPTION THREE-DIMENSIONAL OBJECT Digital HOLOGRAPHY FRESNEL Diffraction
• 年，卷（期）: 2015,（11）
• 页码范围: 313-319
• 页数: 7页
• 分类号: O1

摘要

An optical encryption of three-dimensional (3D) object with digital holography was implemented. In the process of encryption, two holograms involved recording key information and 3D object were obtained. In the process of decryption, the 3D object was reconstructed from the two holograms by extracting the object and key information, followed by multiplication of the two holograms and inverse Fresnel transform numerically. The robustness of the method was also tested for different occlusions attacks and Gaussian noises. The results showed that the method was able to encrypt and decrypt the 3D object while being robust under different occlusions attacks and Gaussian noises.