The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 2005
Filed:
Nov. 26, 2001
Jun Sung Yoon, Seoul, KR;
Dong Hun Kim, Seoul, KR;
Chul Min Joe, Seoul, KR;
Soon Won Jung, Seocho-gu, KR;
Hwi Seok Lee, Seoul, KR;
Byun Jin Lee, Kwachon, KR;
Dong Won Lee, Gyunggi, KR;
Taek Ki Lee, Seoul, KR;
Jun Sung Yoon, Seoul, KR;
Dong Hun Kim, Seoul, KR;
Chul Min Joe, Seoul, KR;
Soon Won Jung, Seocho-gu, KR;
Hwi Seok Lee, Seoul, KR;
Byun Jin Lee, Kwachon, KR;
Dong Won Lee, Gyunggi, KR;
Taek Ki Lee, Seoul, KR;
Secugen Corporation, Santa Clara, CA (US);
Abstract
The disclosed invention herein is a method for extracting fingerprint feature data using a ridge orientation model. The fingerprint feature data extracting method includes the steps of inputting a fingerprint image, extracting ridge orientations according to regions, calculating ridge qualities according to regions and separating background region from the fingerprint image, extracting regions having a core and a delta, setting an initial ridge orientation model, calculating a ridge orientation function, and extracting the ridge orientations and the core and delta positions of the fingerprint image.