Massive parallel optical pattern recognition and retrieval via a two-stage high-capacity multichannel holographic random access memory system
- Lumin, Inc., 1936 Huntington Drive, Suite 208, South Pasadena, CA 91030 (United States)
The multistage holographic optical random access memory (HORAM) system reported recently by Liu et al. provides a new degree of freedom for improving storage capacity. We further present a theoretical and practical analysis of the HORAM system with experimental results. Our discussions include the system design and geometrical requirements, its applications for multichannel pattern recognition and associative memory, the 2-D and 3-D information storage capacity, and multichannel image storage and retrieval via VanderLugt correlator (VLC) filters and joint transform holograms. A series of experiments are performed to demonstrate the feasibility of the multichannel pattern recognition and image retrieval with both the VLC and joint transform correlator (JTC) architectures. The experimental results with as many as 2025 channels show good agreement with the theoretical analysis. (c) 2000 Society of Photo-Optical Instrumentation Engineers.
- OSTI ID:
- 20215447
- Journal Information:
- Optical Engineering, Vol. 39, Issue 2; Other Information: PBD: Feb 2000; ISSN 0091-3286
- Country of Publication:
- United States
- Language:
- English
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