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Background Removing of Slap Fingerprint Images Based on Frequency Domain Analysis
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LI Yanmiao1，ZHANG Yongliang2，HUANG Yaping3，XIAO Gang2，LIN Jing2
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(1.School of Science, Dalian Jiaotong University, Dalian 116028, China;
2.School of Computer Science and Technology, Zhejiang University of Technology, Hangzhou 310023, China;3.School of Education Science and Technology, Zhejiang University of Technology, Hangzhou 310032, China)
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Abstract To separate the background from the foreground of slap fingerprint images quickly and accurately, an efficient algorithm based on frequency domain analysis was presented：① the coarse separation of foreground from the background based on threeorder cumulant; ② the binarization enhancement based on optimal threshold segmentation of gray histogram distribution; ③ the removal of nonfingerprint texture region based on frequency domain analysis and two decision rules; ④ the region combination based on the center nearest neighbor rule. The experimental results show that the algorithm, which is proven effective by the given examples, has a faster processing speed and superior precision.
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Received: 01 December 2009
Published: 31 August 2010
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