A review of hologram calculation methods based on physical diffraction models

Han Dang; Huarong Gu; Jialun Fei

doi:10.1117/12.2686311

27 November 2023 A review of hologram calculation methods based on physical diffraction models

Han Dang, Huarong Gu, Jialun Fei

Proceedings Volume 12768, Holography, Diffractive Optics, and Applications XIII; 127680G (2023) https://doi.org/10.1117/12.2686311
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

The principle of computer-generated holograms (CGHs) for holographic displays is to use the computer to simulate the propagation of light and obtain the wavefront information of an object on the hologram plane. In recent years, algorithms for CGHs based on physical diffraction models have been gradually developed and improved. Hologram calculation methods based on points, lines, polygons and layers have been proposed, named the point-source method, the wireframe method, the polygon method and the layer method, respectively. All the four methods simulate and accumulate the physical diffraction process of the elements, i.e. points, lines, polygons and layers. Their numbers of elements differ greatly, and the reconstructed images have their own features. The type and number of elements affect the calculation speed and reconstruction quality of the hologram. This paper introduces the principles and research status of these four methods and analyze their characteristics. The total calculation time and the average elementary calculation time of the four methods are compared through numerical experiments using the same model. The calculation speed and reconstructed image quality of different methods are evaluated by the equivalent-sample-point method. This paper hopes to provide a guidance and a reference for future research on hologram calculation.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Han Dang, Huarong Gu, and Jialun Fei "A review of hologram calculation methods based on physical diffraction models", Proc. SPIE 12768, Holography, Diffractive Optics, and Applications XIII, 127680G (27 November 2023); https://doi.org/10.1117/12.2686311

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KEYWORDS

Holograms

Diffraction

3D image reconstruction

Computer generated holography

Algorithm development

Computer simulations

Image quality

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