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Fingerprint Segmentation and Ridge Orientation Estimation with a Mobile Camera for Fingerprint Recognition  

Lee Chulhan (Biometrics Engineering Research Center, Yonsei Univ.)
Lee Sanghoon (Biometrics Engineering Research Center, Yonsei Univ.)
Kim Jaihie (Biometrics Engineering Research Center, Yonsei Univ.)
Kim Sung-Jae (Samsung Electronics Co., Ltd.)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.42, no.6, 2005 , pp. 89-98 More about this Journal
Abstract
Fingerprint segmentation and ridge orientation estimation algorithms with images from a mobile camera are proposed. The fingerprint images from a mobile camera are quite different from those from conventional sensor, called touch based sensor such as optical, capacitive, and thermal. For example, the images from a mobile camera are colored and the backgrounds or non-finger regions are very erratic depending on how the image capture time and place. Also the contrast between ridge and valley of a mobile camera image are lower than that of touch based sensor image. To segment fingerprint region, we first detect the initial region using color information and texture information. The LUT (Look Up Table) is used to model the color distribution of fingerprint images using manually segmented images and frequency information is extracted to discriminate between in focused fingerprint regions and out of focused background regions. With the detected initial region, the region growing algerian is executed to segment final fingerprint region. In fingerprint orientation estimation, the problem of gradient based method is very sensitive to outlier that occurred by scar and camera noise. To solve this problem, we propose a robust regression method that removes the outlier iteratively and effectively. In the experiments, we evaluated the result of the proposed fingerprint segmentation algerian using 600 manually segmented images and compared the orientation algorithms in terms of recognition accuracy.
Keywords
fingerprint recognition; mobile camera; segmentation; orientation estimation;
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Times Cited By KSCI : 1  (Citation Analysis)
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