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Volumetric Light-field Encryption at the Microscopic Scale.

ABSTRACT: 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.

SUBMITTER: Li H

PROVIDER: S-EPMC5216341 | biostudies-other | 2017 Jan

REPOSITORIES: biostudies-other

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Volumetric Light-field Encryption at the Microscopic Scale.

Li Haoyu H Guo Changliang C Muniraj Inbarasan I Schroeder Bryce C BC Sheridan John T JT Jia Shu S

Scientific reports 20170106

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 demon ...[more]

PMID: 28059149

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