Finger print identifying method based on broken fingerprint detection |
Title： |
| Finger print identifying method based on broken fingerprint detection |
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Application Number： |
200410062256 |
Application Date： |
2004/07/02 |
Announcement Date： |
2005/03/02 |
Pub. Date： |
2006/08/02 |
Publication Number： |
1588424 |
Announcement Number： |
1267849 |
Grant Date： |
2006-8-2 |
Granted Pub. Date： |
2006-8-2 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G06K 9/00 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Zhou Jie, Wu Nannan, Yang Chunyu |
Key Words： |
Finger print, identifying method, broken fingerprint detection |
Abstract： |
The invention is a fingerprint discriminating method based on broken design detection which belongs to fingerprint identification field. Its character lies in: it carries on broken design detection to detail points extracted with traditional method with 12 groups of best filter, each filter has a discrete value of an angle between the broken design direction and the X axis; works out the filter value under the 12 groups of broken design directions and sets a uniform floor level, acquires 12 groups of binary image, then the stripe region is displayed with rectangular with primary cell analysis method of matrix, and the region is parameterized with length, width and direction of the rectangular; all the binary images are combined together and a real broken design image is acquired, the parameterized images are combined and a broken design model is acquired in order to eliminate the false detail points. To the old people, with the same error reception rate, the fault refusing rate can be decreased to less than 10%. |
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| Last Update |
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2008-4-17 |
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Selected patents owned by Tsinghua University filed in 2005 are loaded. |
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2008-3-31 |
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Selected patents owned by Tsinghua University filed in 2006 and 2007 are load. |
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