Tsang, Peter W. M.Liu, Jung-PingLam, HosonPoon, Ting-Chung2020-04-152020-04-152020-04-15Tsang, P.W.M.; Liu, J.-P.; Lam, H.; Poon, T.-C. Enhancing the Quality of Sampled Phase-Only Hologram (SPOH) Based on Time-Division Comb Filtering. Appl. Sci. 2020, 10, 2732.http://hdl.handle.net/10919/97627Generation 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.application/pdfenCreative Commons Attribution 4.0 Internationalphase-only hologramsampled phase-only hologramgrid-cross down-samplingcomb filteringtime-division comb filteringArticle - Refereed2020-04-15https://doi.org/10.3390/app10082732