Hybrid digital/optical computer systems

Chatwin, Chris, Young, Rupert, Budgett, David, Birch, Philip, Claret-Tournier, Frederick and Sharp, Jim (2000) Hybrid digital/optical computer systems. In: Institution of Electrical Engineers - Seminar, 21st November 2000, Arundel - West Sussex.

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Abstract

A high-speed hybrid optical–digital correlator system was designed, constructed, modeled, and demonstrated experimentally. This correlator is capable of operation at approximately 3000 correlations/s. The input scene is digitized at a resolution of 512 × 512 pixels and the phase information of the two-dimensional fast Fourier transform calculated and displayed in the correlator filter plane at normal video frame rates. High-fidelity reference template images are stored in a phase-conjugating optical memory placed at the nominal input plane of the correlator and reconstructed with a high-speed acousto-optic scanner; this allows for cross correlation of the entire reference data set with the input scene within one frame period. A high-speed CCD camera is used to capture the correlation-plane image, and rapid correlation-plane processing is achieved with a parallel processing architecture.

Item Type: Conference or Workshop Item (Lecture)
Keywords: Optical Computing, hybrid optical/digital, correlation, recognition, real time imaging, holographic memory, DSP
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Subjects: Q Science
Q Science > QA Mathematics > QA0075 Electronic computers. Computer science
Q Science > QC Physics > QC0350 Optics. Light
T Technology > T Technology (General)
Depositing User: Chris Chatwin
Date Deposited: 29 Jun 2015 08:57
Last Modified: 29 Jun 2015 08:57
URI: http://sro.sussex.ac.uk/id/eprint/55006

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