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

Scattering Removal for Finger-Vein Image Restoration

* ,
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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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) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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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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