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 spatially multiplexed discrete 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.
Keywords
Cite
@article{arxiv.1610.08762,
title = {Volumetric Light-field Encryption at the Microscopic Scale},
author = {Haoyu Li and Changliang Guo and Inbarasan Muniraj and Bryce C. Schroeder and John T. Sheridan and Shu Jia},
journal= {arXiv preprint arXiv:1610.08762},
year = {2016}
}