Enhancing the Quality of Sampled Phase-Only Hologram (SPOH) Based on Time-Division Comb Filtering
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...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-04-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/10/8/2732 |
| _version_ | 1797570624211648512 |
|---|---|
| author | Peter W. M. Tsang Jung-Ping Liu Hoson Lam Ting-Chung Poon |
| author_facet | Peter W. M. Tsang Jung-Ping Liu Hoson Lam Ting-Chung Poon |
| author_sort | Peter W. M. Tsang |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T20:27:12Z |
| format | Article |
| id | doaj.art-80691229fa8844159e23ddacd6d856ba |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T20:27:12Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-80691229fa8844159e23ddacd6d856ba2023-11-19T21:41:05ZengMDPI AGApplied Sciences2076-34172020-04-01108273210.3390/app10082732Enhancing the Quality of Sampled Phase-Only Hologram (SPOH) Based on Time-Division Comb FilteringPeter W. M. Tsang0Jung-Ping Liu1Hoson Lam2Ting-Chung Poon3Department of Electronic Engineering, City University of Hong Kong, Hong Kong 999077, ChinaDepartment of Photonics, Feng Chia University, Taichung 407, TaiwanDepartment of Electronic Engineering, City University of Hong Kong, Hong Kong 999077, ChinaBradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA 24061, USAGeneration 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.https://www.mdpi.com/2076-3417/10/8/2732phase-only hologramsampled phase-only hologramgrid-cross down-samplingcomb filteringtime-division comb filtering |
| spellingShingle | Peter W. M. Tsang Jung-Ping Liu Hoson Lam Ting-Chung Poon Enhancing the Quality of Sampled Phase-Only Hologram (SPOH) Based on Time-Division Comb Filtering Applied Sciences phase-only hologram sampled phase-only hologram grid-cross down-sampling comb filtering time-division comb filtering |
| title | Enhancing the Quality of Sampled Phase-Only Hologram (SPOH) Based on Time-Division Comb Filtering |
| title_full | Enhancing the Quality of Sampled Phase-Only Hologram (SPOH) Based on Time-Division Comb Filtering |
| title_fullStr | Enhancing the Quality of Sampled Phase-Only Hologram (SPOH) Based on Time-Division Comb Filtering |
| title_full_unstemmed | Enhancing the Quality of Sampled Phase-Only Hologram (SPOH) Based on Time-Division Comb Filtering |
| title_short | Enhancing the Quality of Sampled Phase-Only Hologram (SPOH) Based on Time-Division Comb Filtering |
| title_sort | enhancing the quality of sampled phase only hologram spoh based on time division comb filtering |
| topic | phase-only hologram sampled phase-only hologram grid-cross down-sampling comb filtering time-division comb filtering |
| url | https://www.mdpi.com/2076-3417/10/8/2732 |
| work_keys_str_mv | AT peterwmtsang enhancingthequalityofsampledphaseonlyhologramspohbasedontimedivisioncombfiltering AT jungpingliu enhancingthequalityofsampledphaseonlyhologramspohbasedontimedivisioncombfiltering AT hosonlam enhancingthequalityofsampledphaseonlyhologramspohbasedontimedivisioncombfiltering AT tingchungpoon enhancingthequalityofsampledphaseonlyhologramspohbasedontimedivisioncombfiltering |