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Inverse-Directed Propagation-Based Hexagonal Hogel Sampling for Holographic Stereogram Printing System

  • Anar Khuderchuluun (School of Information and Communication Engineering, Chungbuk National University) ;
  • Munkh-Uchral Erdenebat (School of Information and Communication Engineering, Chungbuk National University) ;
  • Erkhembaatar Dashdavaa (School of Information and Communication Engineering, Chungbuk National University) ;
  • Ki-Chul Kwon (School of Information and Communication Engineering, Chungbuk National University) ;
  • Jong-Rae Jeong (Department of Information and Communication, Suwon Science College) ;
  • Nam Kim (School of Information and Communication Engineering, Chungbuk National University)
  • Published : 2022.04.16

Abstract

Holographic stereogram (HS) printing is a promising holographic technique for three-dimensional (3D) visualization of an object with accurate depth cues. In this paper, unlike the conventional rectangular hogel based HS, efficient hexagonal hogels sampling for HS printing that enhances the volumetric visualization of reconstruction while providing rapidly generated data using inverse-directed propagation (IDP) is proposed. Specifically, an array of hexagonal hogels is sampled by a computer-generated integral imaging technique using an IDP, which acquires the full information of the 3D object prior to higher volumetric 3D reconstruction. To demonstrate the proposed approach, IDP-based hexagonal hogel sampling for HS printing is implemented, and the enhanced image quality of printed holograms is verified both by numerical simulation and in an optical experiment.

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