Volumetric Light-field Encryption at the Microscopic Scale.
Volumetric Light-field Encryption at the Microscopic Scale.
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DOI：
10.1038/srep40113
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发表时间：
2017-01-06
影响因子：
4.6
通讯作者：
Jia S
中科院分区：
文献类型：
--
作者：
Li H;Guo C;Muniraj I;Schroeder BC;Sheridan JT;Jia S
We report a light-field based method that allows the optical encryption of three-dimensional (3D) volumetric information at the microscopic scale in a single 2D light-field image. The system consists of a microlens array and an array of random phase/amplitude masks. The method utilizes a wave optics model to account for the dominant diffraction effect at this new scale, and the system point-spread function (PSF) serves as the key for encryption and decryption. We successfully developed and demonstrated a deconvolution algorithm to retrieve both spatially multiplexed discrete data and continuous volumetric data from 2D light-field images. Showing that the method is practical for data transmission and storage, we obtained a faithful reconstruction of the 3D volumetric information from a digital copy of the encrypted light-field image. The method represents a new level of optical encryption, paving the way for broad industrial and biomedical applications in processing and securing 3D data at the microscopic scale.
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