title: 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.
authors.affiliation: Department of Biomedical Engineering, Stony Brook University, State University of New York, Stony Brook, New York 11794, USA.
authors.forename: Haoyu
authors.initials: H
authors.lastname: Li
authors.affiliation: Department of Biomedical Engineering, Stony Brook University, State University of New York, Stony Brook, New York 11794, USA.|School of Electrical, Electronic Engineering, IoE2Lab, The SFI-Strategic Research Cluster in Solar Energy Conversion, College of Engineering and Architecture, University College Dublin, Belfield, Dublin 4, Ireland.
authors.forename: Changliang
authors.initials: C
authors.lastname: Guo
authors.affiliation: School of Electrical, Electronic Engineering, IoE2Lab, The SFI-Strategic Research Cluster in Solar Energy Conversion, College of Engineering and Architecture, University College Dublin, Belfield, Dublin 4, Ireland.
authors.forename: Inbarasan
authors.initials: I
authors.lastname: Muniraj
authors.affiliation: Department of Biomedical Engineering, Stony Brook University, State University of New York, Stony Brook, New York 11794, USA.|Medical Scientist Training Program, Stony Brook University, State University of New York, Stony Brook, New York 11794, USA.
authors.forename: Bryce C
authors.initials: BC
authors.lastname: Schroeder
authors.affiliation: School of Electrical, Electronic Engineering, IoE2Lab, The SFI-Strategic Research Cluster in Solar Energy Conversion, College of Engineering and Architecture, University College Dublin, Belfield, Dublin 4, Ireland.
authors.forename: John T
authors.initials: JT
authors.lastname: Sheridan
authors.affiliation: Department of Biomedical Engineering, Stony Brook University, State University of New York, Stony Brook, New York 11794, USA.|Medical Scientist Training Program, Stony Brook University, State University of New York, Stony Brook, New York 11794, USA.
authors.forename: Shu
authors.initials: S
authors.lastname: Jia