Certainty coding method and system in fingerprint identification |
Title： |
| Certainty coding method and system in fingerprint identification |
|
Application Number： |
200710122087 |
Application Date： |
2007/09/21 |
Announcement Date： |
2008/03/19 |
Pub. Date： |
|
Publication Number： |
101145198 |
Announcement Number： |
|
Grant Date： |
|
Granted Pub. Date： |
|
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G06K 9/00, G06K 9/46, G06K 9/68 |
Applicant(s)： |
Tsinghua UniversityBeijing Dongniao Software Technology Co.Ltd |
Inventor(s)： |
Cai Lianhong, Jia Jia, Peng Zhenyun |
Key Words： |
Certainty coding, fingerprint identification |
Abstract： |
The present invention belongs to the computer biometrics technology and relates to a method and a system which adopt certainty coding to accurately match fingerprints during the process of fingerprint comparison. The present invention has the accurate matching by using characteristic of the certainty coding that a characteristic area can be selected from the fingerprint image and the characteristic value corresponding to the characteristic area, such as the total length of fingerprint ridge line, the entropy of the main direction of the direction field of the ridge line and the direction field of the pixel point, to conduct matching work. The certainty coding method and the fingerprint identification system built by the method overcome the defects, such as low accuracy rate and potential safety problems which are caused by adopting fuzzy matching algorithm in the traditional point fingerprint identification system. |
Claim： |
|
Priority： |
|
PCT： |
|
LegalStatus： |
|
 Relevancy information |
|
|
|
| Other Patents of Same Inventor |
|
|
|
|
| Last Update |
|
|
 |
2008-4-17 |
| |
Selected patents owned by Tsinghua University filed in 2005 are loaded. |
|
2008-3-31 |
| |
Selected patents owned by Tsinghua University filed in 2006 and 2007 are load. |
|
|
