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Proceedings Paper

Speckle reduction by macro-pixel separation based on double-phase holographic display
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Paper Abstract

To obtain surreal and richer visual experience, augmented reality (AR) technology has been widely used in various areas. As a popular solution of AR, display using computer generated hologram (CGH) is often accompanied by blurring which is caused by uncontrolled interference. In this paper, a modified algorithm based on double-phase hologram (DPH) algorithm is proposed to reduce speckle noise in holographic reconstruction. The macro-pixels in the original hologram are separated into multiple sub-holograms, and these sub-holograms are displayed alternately in high frequency, which reduces the speckle noise generated from the interference between adjacent macro-pixels. Meanwhile, the method is less time-consuming than the traditional Gerchberg-Saxton algorithm because no iteration is needed. The simulation and the optical experiment based on liquid crystal on silicon (LCoS) have been conducted, and the results confirm the feasibility of the proposed method to improve the image quality.

Paper Details

Date Published: 6 September 2019
PDF: 8 pages
Proc. SPIE 11136, Optics and Photonics for Information Processing XIII, 1113606 (6 September 2019); doi: 10.1117/12.2527742
Show Author Affiliations
Zhentao Qin, Zhejiang Univ. (China)
Yuan Chen, Zhejiang Univ. (China)
Jinlei Zhang, Zhejiang Univ. (China)
Yi Huang, Zhejiang Univ. (China)
Peng Sun, Zhejiang Univ. (China)
Zhenrong Zheng, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 11136:
Optics and Photonics for Information Processing XIII
Khan M. Iftekharuddin; Abdul A. S. Awwal; Victor H. Diaz-Ramirez; Andrés Márquez, Editor(s)

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