RT info:eu-repo/semantics/article
T1 Performance evaluation of a biometric system based on acoustic images
A1 Izquierdo Fuente, Alberto
A1 Val Puente, Lara del
A1 Jiménez Gómez, María Isabel
A1 Villacorta Calvo, Juan José
K1 Acoustic imaging
K1 Biometry
K1 Beamforming
K1 33 Ciencias Tecnológicas
AB 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 λ/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.
PB MDPI
SN 1424-8220
YR 2011
FD 2011
LK https://uvadoc.uva.es/handle/10324/57421
UL https://uvadoc.uva.es/handle/10324/57421
LA eng
NO Sensors, 2011, vol. 11, n. 10, p. 9499-9519
NO Producción Científica
DS UVaDOC
RD 24-nov-2024