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Sensors 2011, 11(10), 9499-9519; doi:10.3390/s111009499
Article

Performance Evaluation of a Biometric System Based on Acoustic Images

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Received: 16 September 2011; Accepted: 26 September 2011 / Published: 10 October 2011
(This article belongs to the Section Physical Sensors)
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Abstract: An acoustic electronic scanning array for acquiring images from a person using a biometric application is developed. Based on pulse-echo techniques, multifrequency acoustic images are obtained for a set of positions of a person (front, front with arms outstretched, back and side). Two Uniform Linear Arrays (ULA) with 15 l/2-equispaced sensors have been employed, using different spatial apertures in order to reduce sidelobe levels. Working frequencies have been designed on the basis of the main lobe width, the grating lobe levels and the frequency responses of people and sensors. For a case-study with 10 people, the acoustic profiles, formed by all images acquired, are evaluated and compared in a mean square error sense. Finally, system performance, using False Match Rate (FMR)/False Non-Match Rate (FNMR) parameters and the Receiver Operating Characteristic (ROC) curve, is evaluated. On the basis of the obtained results, this system could be used for biometric applications.
Keywords: acoustic imaging; biometry; beamforming acoustic imaging; biometry; beamforming
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Izquierdo-Fuente, A.; del Val, L.; Jiménez, M.I.; Villacorta, J.J. Performance Evaluation of a Biometric System Based on Acoustic Images. Sensors 2011, 11, 9499-9519.

AMA Style

Izquierdo-Fuente A, del Val L, Jiménez MI, Villacorta JJ. Performance Evaluation of a Biometric System Based on Acoustic Images. Sensors. 2011; 11(10):9499-9519.

Chicago/Turabian Style

Izquierdo-Fuente, Alberto; del Val, Lara; Jiménez, María I.; Villacorta, Juan J. 2011. "Performance Evaluation of a Biometric System Based on Acoustic Images." Sensors 11, no. 10: 9499-9519.


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