Scattering Removal for Finger-Vein Image Restoration

Sensors

Jinfeng Yang¹  Ben Zhang² 

[1] Tianjin Key Lab for Advanced Signal Processing, Civil Aviation University of China, P.O. Box 9, Tianjin 300300, China;

关键词: image restoration;    finger-vein;    scattering removal;    optical model;   

DOI  :  10.3390/s120303627

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland