상세정보
학술지
Reducing Speckle Artifacts in Digital Holography through Programmable Filtration
- 발행일
- 201902
- 출처
- ETRI Journal, v.41 no.1, pp.32-41
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 18MF1200, 디지털 홀로그래픽 테이블탑형 단말 기술 개발, 김진웅
- 초록
- We propose a speckle reduction technique in electronic holographic display systems, where digital micro-mirror array devices are used as spatial light modulators. By adopting a programmable filtration in a general 4-f optic configuration, it is shown that the signal spectrum components in the frequency domain of a viewing-window-based holographic display system can be selectively filtered. Compared to the widely utilized single-sideband filtration techniques in electronic holographic display systems, our proposed programmable filtration can be utilized to effectively reduce the speckles in the reconstruction of point-cloud-based computer-generated holograms. Experimental results are presented to verify our proposed concept.
- KSP 제안 키워드
- Cloud-based, Computer generated holograms(CGH), Display System, Micro-mirror array, Point clouds, Reduction technique, Signal spectrum, Spatial light modulator(SLM), Speckle Reduction, digital holography, frequency domain(FD)