Simplified digital content generation based on an inverse-directed propagation algorithm for holographic stereogram printing

LETO / LETO-3 Spatial Light Modulators
Digital-/ Computer Holography/ CGH Imaging/ Image Processing
Published on:
Authors: Khuderchuluun, Anar; Piao, Yan-Ling; Erdenebat, Munkh-Uchral; Dashdavaa, Erkhembaatar; Lee, Moung Hee; Jeon, Seok-Hee & Kim, Nam
Abstract:
“Holographic stereogram (HS) printing requires extensive memory capacity and long computation time during perspective acquisition and implementation of the pixel re-arrangement algorithm. Hogels contain very weak depth information of the object. We propose a HS printing system that uses simplified digital content generation based on the inverse-directed propagation (IDP) algorithm for hogel generation. Specifically, the IDP algorithm generates an array of hogels using a simple process that acquires the full three-dimensional (3D) information of the object, including parallax, depth, color, and shading, via a computer-generated integral imaging technique. This technique requires a short computation time and is capable of accounting for occlusion and accommodation effects of the object points via the IDP algorithm. Parallel computing is utilized to produce a high-resolution hologram based on the properties of independent hogels. To demonstrate the proposed approach, optical experiments are conducted in which the natural 3D visualizations of real and virtual objects are printed on holographic material. Experimental results demonstrate the simplified computation involved in content generation using the proposed IDP-based HS printing system and the improved image quality of the holograms.”

Restricted Access

Publication: Applied Optics
Issue/Year: Applied Optics, Volume 60; Number 14; Pages 4235; 2021
DOI: 10.1364/ao.423205
Link: https://doi.org/10.1364/ao.423205

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