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Proceedings Paper

Implementation of image encoding and decoding with computer-generated hologram of fractional Fourier transform
Author(s): Yongkang Guo; Yangsu Zeng; Shiwei Xie; Fuhua Gao; Jianhua Zhu; Yixiao Zhang; Qinjun Peng; Jinglei Du; Jin Zhang
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Paper Abstract

A new method is presented to encode and decode images with computer-generated hologram of fractional Fourier transform. The fractional Fourier transform computer-generated holograms (FRT-CGH) of several objects with different orders are respectively recorded on one holographic plate. In order to reconstruct images of the objects, several fractional Fourier transform systems of certain orders are needed. This method is agile and convenient on design and fabrication. It can be encoded and decoded either by numerical method or by optical method. Because of its particularity of image reconstruction, FRT-CGH is regarded as a new optical security system and may be widely used in the future.

Paper Details

Date Published: 30 August 2002
PDF: 8 pages
Proc. SPIE 4924, Holography, Diffractive Optics, and Applications, (30 August 2002); doi: 10.1117/12.481526
Show Author Affiliations
Yongkang Guo, Sichuan Univ. (China)
Yangsu Zeng, Sichuan Univ. (China)
Shiwei Xie, Sichuan Univ. (China)
Fuhua Gao, Sichuan Univ. (China)
Jianhua Zhu, Sichuan Univ. (China)
Yixiao Zhang, Sichuan Univ. (China)
Qinjun Peng, Sichuan Univ. (China)
Jinglei Du, Sichuan Univ. (China)
Jin Zhang, Institute of Optics and Electronics (China)

Published in SPIE Proceedings Vol. 4924:
Holography, Diffractive Optics, and Applications
Dahsiung Hsu; Jiabi Chen; Yunlong Sheng, Editor(s)

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