ETRI Journal

  • 제44권1호
  • /
  • Pages.85-93
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  • 2022
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  • 1225-6463(pISSN)
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  • 2233-7326(eISSN)
한국전자통신연구원 (Electronics and Telecommunications Research Institute)
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Efficient mesh-based realistic computer-generated hologram synthesis with polygon resolution adjustment

  • Yeom, Han-Ju (Telecommunications & Media Research Laboratory, Electronics and Telecommunications Research Institute) ;
  • Cheon, Sanghoon (ICT Creative Research Laboratory, Electronics and Telecommunications Research Institute) ;
  • Choi, Kyunghee (ICT Creative Research Laboratory, Electronics and Telecommunications Research Institute) ;
  • Park, Joongki (Telecommunications & Media Research Laboratory, Electronics and Telecommunications Research Institute)
  • 투고 : 2021.06.20
  • 심사 : 2021.09.27
  • 발행 : 2022.02.01
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초록

We propose an efficient method for synthesizing mesh-based realistic computer-generated hologram (CGH). In a previous nonanalytic mesh-based CGH synthesis, the angular spectrum of the two-dimensional (2D) plane is calculated using the fast Fourier transform (FFT) with the same size as the resolution of the final hologram. Because FFT increases the computation time as the size of the input matrix increases, the previous method has a problem: The higher the resolution of the hologram, the greater the computational load, thereby delaying synthesis time. In this study, when calculating the angular spectrum of the 2D plane in mesh-based CGH synthesis, we propose a method to calculate the angular spectrum by defining the 2D plane with an arbitrary size smaller than the resolution of the final hologram. The resolution adjustment method reduces the computation time and can be applied to occlusion culling and texturing for the realistic effect of mesh-based CGH. We describe the principle, error analysis, application of realistic effect, and experimental results of the proposed method.

키워드

과제정보

This work was supported by Institute of Information communications Technology Planning & Evaluation (Institute for Information and Communications Technology Promotion [IITP]) grant funded by the Korea government (MSIT) (No. 2019-0-00001, Development of Holo-TV Core Technologies for Hologram Media Services).

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