Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Reconstruction of Optical Scanning Holography with Segmentation

  • Im, Dong Hwan (Department of Optical Engineering, Sejong University) ;
  • Kim, Taegeun (Department of Optical Engineering, Sejong University) ;
  • Kim, Kyung Beom (Department of Optical Engineering, Sejong University) ;
  • Lee, Eung Joon (Department of Optical Engineering, Sejong University) ;
  • Lim, Seung Ram (Department of Optical Engineering, Sejong University)
  • Received : 2021.08.30
  • Accepted : 2021.10.21
  • Published : 2021.12.25
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Abstract

We propose a technique that reconstructs a hologram whose pixel number is greater than the pixel numbers of a conventional image sensor. The pixel numbers of the hologram recorded by optical scanning holography (OSH) increases as the scan area becomes larger. The reconstruction time also increases drastically as the size of the hologram increases. The holographic information of a three-dimensional (3D) scene is distributed throughout the recorded hologram; this makes the simple divide-and-stitch approach fail. We propose a technique that reconstructs the hologram without loss of holographic information. First, we record the hologram of a 3D scene using OSH. Second, we segment the hologram into sub-holograms that contain complete holographic information. Third, we reconstruct the sub-holograms simultaneously. Finally, we rearrange the reconstructions of the sub-holograms.

Keywords

Acknowledgement

This work was partly supported by an Institute of Information & communications Technology Planning & Evaluation (IITP) grant funded by the Korea government (MSIT) (No. 2020-0-00981, Development of Digital Holographic Metrology Technology for Phase Retrieval; 50%) and by an Institute of Civil Military Technology Cooperation grant funded by the Defense Acquisition Program Administration and Ministry of Trade, Industry and Energy of the Korean government (No. 18-CM-DP-24, Development of digital HOE for immersive exhibition applications; 50%).

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