Ultrasonic sensor for fingerprints recognition

Paper

30 June 1995 Ultrasonic sensor for fingerprints recognition

Wieslaw Bicz, Zbigniew Gumienny, Mieczyslaw Pluta

Author Affiliations +

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.

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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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Cited by 2 scholarly publications.

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KEYWORDS

Diffraction

Transducers

Acoustics

Ultrasonics

Sensors

Diffraction gratings

Digital signal processing

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