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Sensors 2012, 12(3), 3627-3640; doi:10.3390/s120303627
Article

Scattering Removal for Finger-Vein Image Restoration

* ,
 and
Tianjin Key Lab for Advanced Signal Processing, Civil Aviation University of China, P.O. Box 9, Tianjin 300300, China
* Author to whom correspondence should be addressed.
Received: 7 February 2012 / Revised: 6 March 2012 / Accepted: 6 March 2012 / Published: 15 March 2012
(This article belongs to the Special Issue Hand-Based Biometrics Sensors and Systems)
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Abstract

Finger-vein recognition has received increased attention recently. However, the finger-vein images are always captured in poor quality. This certainly makes finger-vein feature representation unreliable, and further impairs the accuracy of finger-vein recognition. In this paper, we first give an analysis of the intrinsic factors causing finger-vein image degradation, and then propose a simple but effective image restoration method based on scattering removal. To give a proper description of finger-vein image degradation, a biological optical model (BOM) specific to finger-vein imaging is proposed according to the principle of light propagation in biological tissues. Based on BOM, the light scattering component is sensibly estimated and properly removed for finger-vein image restoration. Finally, experimental results demonstrate that the proposed method is powerful in enhancing the finger-vein image contrast and in improving the finger-vein image matching accuracy.
Keywords: image restoration; finger-vein; scattering removal; optical model image restoration; finger-vein; scattering removal; optical model
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Yang, J.; Zhang, B.; Shi, Y. Scattering Removal for Finger-Vein Image Restoration. Sensors 2012, 12, 3627-3640.

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