24 May 2000 Compact parallel joint transform correlator for facial recognition
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Proceedings Volume 4089, Optics in Computing 2000; (2000) https://doi.org/10.1117/12.386853
Event: 2000 International Topical Meeting on Optics in Computing (OC2000), 2000, Quebec City, Canada
Abstract
We discuss the design of a compact parallel joint transform correlator (PJTC) using four binary zone plate array as a Fourier transform lens. The external dimensions of the hybrid opto-electronic correlator is 23 cm X 15 cm X 16.3 cm, which includes the PJTC system in the upper stage and some of driving circuits and an LD for a light source in the lower stage. Experimentally, we implemented this compact PJTC system for facial recognition with database of 100 persons and obtained reliable discrimination results. Furthermore, we propose a novel method of pre-processing so that any general users could easily operate the compact PJTC system and constantly obtained the same size extracted images, by fixing three points; the edges of both eyes and the low end of nose, when normalizing the facial image size. We confirmed the ability of our system to meet the conditions for recognition by JTC.
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Rieko Inaba, Naoko Kawakami, Kumiko Oguma, Eriko Watanabe, Kashiko Kodate, "Compact parallel joint transform correlator for facial recognition", Proc. SPIE 4089, Optics in Computing 2000, (24 May 2000); doi: 10.1117/12.386853; https://doi.org/10.1117/12.386853
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