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http://dx.doi.org/10.4218/etrij.2018-0554

Reducing speckle artifacts in digital holography through programmable filtration  

Lim, Yongjun (Broadcasting and Media Research Laboratory, Electronics and Telecommunications Research Institute)
Park, Jae-Hyeung (Department of Information and Communication Engineering, Inha University)
Hahn, Joonku (School of Electronics Engineering, Kyungpook National University)
Kim, Hayan (Broadcasting and Media Research Laboratory, Electronics and Telecommunications Research Institute)
Hong, Keehoon (Broadcasting and Media Research Laboratory, Electronics and Telecommunications Research Institute)
Kim, Jinwoong (Broadcasting and Media Research Laboratory, Electronics and Telecommunications Research Institute)
Publication Information
ETRI Journal / v.41, no.1, 2019 , pp. 32-41 More about this Journal
Abstract
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.
Keywords
holographic display; holography; spatial filter; speckle; speckle reduction;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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