Rotation-invariant photorefractive correlator

James Zhiqing Wen; Xiangyang Yang

doi:10.1117/12.255487

25 October 1996 Rotation-invariant photorefractive correlator

James Zhiqing Wen, Xiangyang Yang

Proceedings Volume 2849, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications II; (1996) https://doi.org/10.1117/12.255487
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

A rotation-invariant photorefractive correlation is reported in this paper. Matched filters synthesized with reference patterns at different rotational angles are stored in the photorefractive medium via angular and peristrophic multiplexing. During the recognition process, the input image is compared with all the reference patterns in parallel. The feasibility of the proposed correlator is demonstrated by experimental results.

Citation Download Citation

James Zhiqing Wen and Xiangyang Yang "Rotation-invariant photorefractive correlator", Proc. SPIE 2849, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications II, (25 October 1996); https://doi.org/10.1117/12.255487

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