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30 June 1995 Ultrasonic sensor for fingerprints recognition
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Proceedings Volume 2634, Optoelectronic and Electronic Sensors; (1995) https://doi.org/10.1117/12.213142
Event: Optoelectronic and Electronic Sensors, 1994, Warsaw-Zegrze, Poland
Abstract
The paper presents prototypes of ultrasonic sensors for fingerprint pattern recognition. Their principle of operation is based on the amplitude measurements taken in selected points of acoustic field of ultrasonic wave diffracted from subsurface finger structure. Examples of sensor construction and measured data are presented. Fingerprint structure recognition from pulse echo shows the possible use of the sensor as a synthetic aperture microscope.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wieslaw Bicz, Zbigniew Gumienny, and Mieczyslaw Pluta "Ultrasonic sensor for fingerprints recognition", Proc. SPIE 2634, Optoelectronic and Electronic Sensors, (30 June 1995); https://doi.org/10.1117/12.213142
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