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Journal Article
Efficient mesh‐based realistic computer‐generated hologram synthesis with polygon resolution adjustment
- Authors
- Han-Ju Yeom, Sanghoon Cheon, Kyunghee Choi, Joongki Park
- Issue Date
- 2022-02
- Citation
- ETRI Journal, v.44, no.1, pp.85-93
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- 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.
- KSP Keywords
- 2D Plane, Adjustment method, Angular spectrum, Computer generated holograms(CGH), Efficient mesh, Fast Fourier Transform(FFI), Mesh-based, Occlusion culling, Synthesis time, computation time, computational load
This work is distributed under the term of Korea Open Government License (KOGL)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
