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An Online System of Multispectral Palmprint Verification

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5 Author(s)
Zhang, D. ; Dept. of Comput., Hong Kong Polytech. Univ., Kowloon, China ; Zhenhua Guo ; Guangming Lu ; Zhang, D.
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Palmprint is a unique and reliable biometric characteristic with high usability. With the increasing demand of highly accurate and robust palmprint authentication system, multispectral imaging has been employed to acquire more discriminative information and increase the antispoof capability of palmprint. This paper presents an online multispectral palmprint system that could meet the requirement of real-time application. A data acquisition device is designed to capture the palmprint images under Blue, Green, Red, and near-infrared (NIR) illuminations in less than 1 s. A large multispectral palmprint database is then established to investigate the recognition performance of each spectral band. Our experimental results show that the red channel achieves the best result, whereas the Blue and Green channels have comparable performance but are slightly inferior to the NIR channel. After analyzing the extracted features from different bands, we propose a score level fusion scheme to integrate the multispectral information. The palmprint verification experiments demonstrated the superiority of multispectral fusion to each single spectrum, which results in both higher verification accuracy and antispoofing capability.

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:59 ,  Issue: 2 )
Biometrics Compendium, IEEE