9 March 1999 Fingerprint identification by use of a volume holographic optical correlator
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Abstract
We propose an optical correlator system using volume hologram for database of matched filter. Optical correlator has high speed and parallel processing characteristics of optics. Matched filters are recorded into a volume hologram that can store data with high density, transfer them with high speed, and select a randomly chosen data element. The multiple reference images of database are prerecorded in a photorefractive crystal in the form of Fourier transform images, simply by passing the image displayed in a spatial light modulator through a Fourier transform lens. The angular multiplexing method for multiple holograms of database is achieved by controlling the reference directions with a step motor. Experimental results show that the proposed system can be used for fingerprint recognition.
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Seung-Hyun Lee, Seung-Hyun Lee, Sang-Yi Yi, Sang-Yi Yi, Eun-Soo Kim, Eun-Soo Kim, } "Fingerprint identification by use of a volume holographic optical correlator", Proc. SPIE 3715, Optical Pattern Recognition X, (9 March 1999); doi: 10.1117/12.341313; https://doi.org/10.1117/12.341313
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