Associative memory system based on volume holographic storage and wavelet transform

Wenyi Feng; Yingbai Yan; Guofan Jin; Minxian Wu; Qingsheng He

doi:10.1117/12.363938

20 September 1999 Associative memory system based on volume holographic storage and wavelet transform

Wenyi Feng, Yingbai Yan, Guofan Jin, Minxian Wu, Qingsheng He

Proceedings Volume 3801, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications V; (1999) https://doi.org/10.1117/12.363938
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

A novel system for associative memory is proposed and constructed in this paper. It is based on the theory of wavelet matched filtering and the associative characteristic of volume holographic storage in a photorefractive crystal. A primary image can be remembered and recovered from its deformed form or main features with the system. The photorefractive crystal in the system stands for both the cell of identification calculation and that of image storage. A high efficiency is obtained by a means of parallel processing in the system. The performance of the system is more accurate with the introduction of wavelet transform to the system, which is testified by the comparison between a conventional system and the novel system. Its application in fast query of human face from a face database is studied. The given experimental results are promising.

Citation Download Citation

Wenyi Feng, Yingbai Yan, Guofan Jin, Minxian Wu, and Qingsheng He "Associative memory system based on volume holographic storage and wavelet transform", Proc. SPIE 3801, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications V, (20 September 1999); https://doi.org/10.1117/12.363938

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