Different strategies for down-sampling computer-generated holograms

Jung-Ping Liu

doi:10.1117/12.2685711

27 November 2023 Different strategies for down-sampling computer-generated holograms

Jung-Ping Liu

Proceedings Volume 12768, Holography, Diffractive Optics, and Applications XIII; 127680E (2023) https://doi.org/10.1117/12.2685711
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

A high-resolution computer-generated hologram can be displayed on a low resolution spatial light modulator with a high-resolution mask attached. Three different masks are discussed here. The regular grid down-sampling (RG) mask, the regular grid jittered down-sampling (RGJD) mask, and the asymmetrical regular grid jittered down-sampling (A-RGJD) mask. We found the RGJD method can retain the high-resolution information but also produce significant noise. By contrast, the RG method can produce clear image with reduced bandwidth. The two methods can be combined as the A-RGJD method, in which the horizontal bandwidth of the object remains large, and the noise is well controlled.

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

Citation Download Citation

Jung-Ping Liu "Different strategies for down-sampling computer-generated holograms", Proc. SPIE 12768, Holography, Diffractive Optics, and Applications XIII, 127680E (27 November 2023); https://doi.org/10.1117/12.2685711

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