Title:
METHODS FOR FINGERPRINT IMAGE ENHANCEMENT, FINGERPRINT RECOGNITION AND APPLICATION STARTUP
Document Type and Number:
WIPO Patent Application WO/2020/187098
Kind Code:
A1
Abstract:
Methods for fingerprint image enhancement, fingerprint recognition and application startup. The method for fingerprint image enhancement comprises: eliminating a background texture of a fingerprint image of the current frame to obtain a pure fingerprint image (S101); performing first preprocessing on the pure fingerprint image to obtain a first preprocessed image (S102); obtaining a valid region of the first preprocessed image (S103); performing orientation field estimation and orientation field correction on the valid region (S104); and performing second preprocessing on the valid region subjected to the orientation field correction to obtain a fingerprint enhanced image (S105). The number of fingerprint collections can be effectively reduced, the quality of the fingerprint image is improved, the complicated degree of fingerprint collection is reduced, the fingerprint unlocking efficiency is improved, and the user experience is improved.
Inventors:
ZHU MINGMING (CN)
LEI HUA (CN)
ZHAO JIACAI (CN)
MEI LI (CN)
WANG JIN (CN)
LEI HUA (CN)
ZHAO JIACAI (CN)
MEI LI (CN)
WANG JIN (CN)
Application Number:
PCT/CN2020/078648
Publication Date:
September 24, 2020
Filing Date:
March 10, 2020
Export Citation:
Assignee:
ARCSOFT CORP LTD (CN)
International Classes:
G06K9/00
Foreign References:
| CN103065134A | 2013-04-24 | |||
| CN103996026A | 2014-08-20 | |||
| CN1480898A | 2004-03-10 | |||
| CN102999750A | 2013-03-27 | |||
| CN101609499A | 2009-12-23 | |||
| CN105205442A | 2015-12-30 | |||
| CN106342325B | 2013-08-14 |
Other References:
See also references of EP 3940583A4
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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