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Proceedings Paper

Hybrid optical system for computing invariant moments of images
Author(s): Yansong Chen; Shi-hai Zheng; Dehuan Li
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Paper Abstract

A hybrid optical-digital system consisting of a holographic mask, two lenses, a CCD detector, and a microcomputer is presented to compute the invariant moments of images in real-time. Some English letters are tested as input patterns to extract invariant moments. Experimental results show that the invariant moments of a letter are largely independent of shift and rotation, and the moments are distinct with different letters.

Paper Details

Date Published: 24 April 1992
PDF: 4 pages
Proc. SPIE 1731, Soviet-Chinese Joint Seminar on Holography and Optical Information Processing, (24 April 1992); doi: 10.1117/12.140356
Show Author Affiliations
Yansong Chen, Institute of Physics (China)
Shi-hai Zheng, Institute of Physics (China)
Dehuan Li, Institute of Physics (China)

Published in SPIE Proceedings Vol. 1731:
Soviet-Chinese Joint Seminar on Holography and Optical Information Processing

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