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| Fingerprint Orientation Field Estimation Based on the Primary and Secondary Ridges within Fingerprint Block |
| LIU Huanxi,LI Xiong,LIU Yaxiong,LIU Yuncai |
| (School of Electronic,Information and Electrical Engineering, Shanghai Jiaotong University， Shanghai 200240, China) |
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Abstract A novel algorithm based on the primary and secondary ridges within the fingerprint block was proposed for the orientation field estimation. The algorithm comprises four steps: preprocessing original fingerprint image, determining the primary and secondary ridges of fingerprint foreground block using the top semineighbor searching algorithm, estimating block direction based on straightline model of such a primary ridge and correcting the spurious block directions. The experimental results show that it achieves satisfying estimation accuracy with low computational time expense. A further experiment shows that it is more accurate and robust to noise compared with the previous methods and can improve the performance of a fingerprint recognition system.
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Received: 22 May 2009
Published: 30 March 2010
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