Enhancing the Quality of Sampled Phase-Only Hologram (SPOH) Based on Time-Division Comb Filtering

Autor:	Peter W. M. Tsang, Jung-Ping Liu, Hoson Lam, Ting-Chung Poon
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	phase-only hologram sampled phase-only hologram grid-cross down-sampling comb filtering time-division comb filtering Technology Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Zdroj:	Applied Sciences, Vol 10, Iss 8, p 2732 (2020)
Druh dokumentu:	article
ISSN:	2076-3417
DOI:	10.3390/app10082732
Popis:	Generation of digital phase-only Fresnel holograms is an important research area in digital holography, as it leads to a substantial simplification of a holographic display system. However, the quality of the reconstructed image of a hologram without the magnitude component is heavily degraded. The problem can be reduced by down-sampling the intensity of an image prior to generating the hologram. The method, referred to as “sampled phase-only hologram” (SPOH) generation, results in reconstructed images that are masked with the pattern of the down-sampling lattice. This paper reports a novel, low complexity method to alleviate this problem through the concept of comb filtering. Results reveal prominent enhancement on the reconstructed image of a SPOH.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/80691229fa8844159e23ddacd6d856ba Zobrazit plný text záznamu View record in DOAJ