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Proceedings Paper

Rotation-invariant volume holographic correlator by combining the synthetic discriminant function and wavelet filtering
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Paper Abstract

In this paper, it is proposed to record the matched filter in the photorefractive crystal by using the synthetic discriminant function as the input. The synthetic discriminant function is generated by training a set of rotated object images. Multiple matched filters are stored by angle-multiplexing in the same volume. Due to the large difference among the optical throughouts of the images, a wavelet transform filter is directly introduced into the experimental setup to improve the object discrimination largely. Computer simulation and experimental results demonstrate that it is possible to achieve the rotation-invariant pattern recognition with the proposed method

Paper Details

Date Published: 20 January 2006
PDF: 6 pages
Proc. SPIE 6027, ICO20: Optical Information Processing, 60271B (20 January 2006); doi: 10.1117/12.667946
Show Author Affiliations
Dayong Wang, Beijing Univ. of Technology (China)
Shengtong Feng, Beijing Univ. of Technology (China)
Zhuqing Jiang, Beijing Univ. of Technology (China)
Shiquan Tao, Beijing Univ. of Technology (China)

Published in SPIE Proceedings Vol. 6027:
ICO20: Optical Information Processing
Yunlong Sheng; Songlin Zhuang; Yimo Zhang, Editor(s)

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