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Biometric feature extraction using local fractal auto-correlation |
Chen Xi (陈熙)a, Zhang Jia-Shu (张家树)b |
a School of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650051, China; b Key Lab of Signal & Information Processing of Sichuan Province, Southwest Jiaotong University, Chengdu 610031, China |
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Abstract Image texture feature extraction is a classical means for biometric recognition. To extract effective texture feature for matching, we utilize local fractal auto-correlation to construct an effective image texture descriptor. Three main steps are involved in the proposed scheme: (i) using two-dimensional Gabor filter to extract the texture features of biometric images; (ⅱ) calculating the local fractal dimension of Gabor feature under different orientations and scales using fractal auto-correlation algorithm; and (ⅲ) linking the local fractal dimension of Gabor feature under different orientations and scales into a big vector for matching. Experiments and analyses show our proposed scheme is an efficient biometric feature extraction approach.
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Received: 10 October 2013
Revised: 23 February 2014
Accepted manuscript online:
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PACS:
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64.60.al
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(Fractal and multifractal systems)
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42.30.-d
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(Imaging and optical processing)
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42.30.Sy
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(Pattern recognition)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61262040, 61271341, 81360230, and 61271007) and the Applied Basic Research Projects of Yunnan Province, China (Grant No. KKSY201203062). |
Corresponding Authors:
Chen Xi
E-mail: xcbiometrics@126.com
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Cite this article:
Chen Xi (陈熙), Zhang Jia-Shu (张家树) Biometric feature extraction using local fractal auto-correlation 2014 Chin. Phys. B 23 096401
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