NDLI: A Method for Capturing the Finger-Vein Image Using Nonuniform Intensity Infrared Light

Content Provider	IEEE Xplore Digital Library
Author	Dai, Yanggang Huang, Beining Li, Wenxin Xu, Zhuoqun
Copyright Year	2008
Abstract	In the finger vein authentication, one problem is that the variable finger brightness makes the veins unclear. For the same reason, it is difficult to get the intact finger-vein pattern which contains more features. In this paper, we developed an experimental rule to adjust the intensity of the light, which can solve the problem mentioned. We propose three criterions, the standard deviation of the gray level, total length of the vein and the number of bifurcations, to judge the quality of the image. In our experiment, our method makes the brightness of the finger more uniform, thus the standard deviation of the gray level decrease by 48.4% on average. The numbers of two features, the veins and its bifurcations, increase by 44.1% and 31.4% respectively. Using our method, we have built a finger vein image database which has 600 images.
Starting Page	501
Ending Page	505
File Size	786045
Page Count	5
File Format	PDF
ISBN	9780769531199
DOI	10.1109/CISP.2008.654
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-27
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	uniform light intensity Brightness CMOS image sensors Bifurcation infrared Sensor arrays Veins Fingers Authentication Infrared imaging Infrared image sensors finger vein Charge-coupled image sensors
Content Type	Text
Resource Type	Article

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