Optoelectronic feature extractor for classification of fingerprints

Jun Ohta; John P. Sharpe; Kristina M. Johnson

doi:10.1117/12.163589

9 November 1993 Optoelectronic feature extractor for classification of fingerprints

Jun Ohta, John P. Sharpe, Kristina M. Johnson

Proceedings Volume 2026, Photonics for Processors, Neural Networks, and Memories; (1993) https://doi.org/10.1117/12.163589
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

We present the design and test results of an optoelectronic feature detector array for use in a fingerprint ridge extraction system. The system comprises a microlens array for taking multiple Fourier transforms and an array of detectors. Each detector is composed of a set of wedge photodetectors with associated winner-take-all circuitry and encoders for reporting the maximally stimulated wedge element.

Citation Download Citation

Jun Ohta, John P. Sharpe, and Kristina M. Johnson "Optoelectronic feature extractor for classification of fingerprints", Proc. SPIE 2026, Photonics for Processors, Neural Networks, and Memories, (9 November 1993); https://doi.org/10.1117/12.163589

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