Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
IMAGE VERIFICATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2012/063708
Kind Code:
A1
Abstract:
A feature-point verification unit calculates a first verification score between a first organism pattern and a second organism pattern, on the basis of a first feature point data that indicates a first feature-point group of a first ridge pattern contained in a first image of the first organism pattern, and a second feature point data that indicates a second feature-point group of a second ridge pattern contained in a second image of the second organism pattern, extracts, from the first feature-point group and the second feature-point group, a group of feature points corresponding to each other as a corresponding feature-point group, and generates a corresponding feature-point list. An image nonlinear-conversion unit executes a first-image nonlinear conversion that makes the first image become more similar to the second image, on the basis of the corresponding feature-point list. The feature-point verification unit calculates a second verification score between the first organism pattern and the second organism pattern, on the basis of the first image and the second image after the first-image nonlinear conversion was executed. In such a way, high verification precision can be achieved in finger-print verification or palm-print verification that uses low-quality images.

Inventors:
HARA MASANORI (JP)
SATO NINA (JP)
Application Number:
PCT/JP2011/075322
Publication Date:
May 18, 2012
Filing Date:
November 02, 2011
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NEC CORP (JP)
HARA MASANORI (JP)
SATO NINA (JP)
International Classes:
G06T7/00
Foreign References:
JP2008310814A2008-12-25
JPH10261089A1998-09-29
JP2010225102A2010-10-07
JP2008276758A2008-11-13
JP2002298141A2002-10-11
JPH07114649A1995-05-02
JP2010225102A2010-10-07
JP2010225102A2010-10-07
JP2008040693A2008-02-21
JP2008065390A2008-03-21
JP2009223562A2009-10-01
JP2008225764A2008-09-25
JP2009223562A2009-10-01
JP2010250205A2010-11-08
Other References:
"Handbook of Fingerprint Recognition", 2003, SPRINGER
Attorney, Agent or Firm:
KUDOH Minoru (JP)
Minoru Kudo (JP)
Download PDF:
View/Download PDF      PDF Help
Claims:



 
Previous Patent: PROCESS FOR MANUFACTURING FLUORESCENT MATERIAL

Next Patent: WAVELENGTH SELECTOR SWITCH