公开(公告)号：EP2289020A4

公开(公告)日：2012-01-25

申请号：EP09747085

申请日：2009-04-13

Applicant: IBM

Inventor： AGGARWAL GAURAV ,  BOLLE RUDOLF MAARTEN ,  JEA TSAI-YANG ,  RATHA NALINI KANTA

IPC: G06K9/00

CPC classification number: G06K9/00067 ,  G06K9/00073

公开(公告)号：CA2717612C

公开(公告)日：2018-05-29

申请号：CA2717612

申请日：2009-04-13

Applicant: IBM

Inventor： AGGARWAL GAURAV ,  BOLLE RUDOLF MAARTEN ,  JEA TSAI-YANG ,  RATHA NALINI KANTA

IPC: G06K9/36

Abstract: Techniques for generating a gradient characterization for a first fingerprint image are provided. One or more fingerprint feature points are selected from the first fingerprint image. A region is obtained for each of the one or more selected fin-gerprint feature points. The region is a representation of an area proximate a given fingerprint feature point. Each of the obtained regions is divided into a plurality of sub-regions. A histogram is generated for each of the plurality of sub-regions. For each of the one or more selected fingerprint feature points, the one or more generated histograms are combined into a concatenated histogram. The concatenated histogram is used for identification purposes.

公开(公告)号：AU2009246750A1

公开(公告)日：2009-11-19

申请号：AU2009246750

申请日：2009-04-13

Applicant: IBM

Inventor： RATHA NALINI KANTA ,  AGGARWAL GAURAV ,  JEA TSAI-YANG ,  BOLLE RUDOLF MAARTEN

IPC: G06K9/00

Abstract: Techniques for generating a gradient characterization for a first fingerprint image are provided. One or more fingerprint feature points are selected from the first fingerprint image. A region is obtained for each of the one or more selected fingerprint feature points. The region is a representation of an area proximate a given fingerprint feature point. Each of the obtained regions is divided into a plurality of sub-regions. A histogram is generated for each of the plurality of sub-regions. For each of the one or more selected fingerprint feature points, the one or more generated histograms are combined into a concatenated histogram. The concatenated histogram is used for identification purposes.

公开(公告)号：AU2009246750B2

公开(公告)日：2014-04-03

申请号：AU2009246750

申请日：2009-04-13

Applicant: IBM

Inventor： JEA TSAI-YANG ,  AGGARWAL GAURAV ,  RATHA NALINI KANTA ,  BOLLE RUDOLF MAARTEN

IPC: G06K9/00

Abstract: Techniques for generating a gradient characterization for a first fingerprint image are provided. One or more fingerprint feature points are selected from the first fingerprint image. A region is obtained for each of the one or more selected fingerprint feature points. The region is a representation of an area proximate a given fingerprint feature point. Each of the obtained regions is divided into a plurality of sub-regions. A histogram is generated for each of the plurality of sub-regions. For each of the one or more selected fingerprint feature points, the one or more generated histograms are combined into a concatenated histogram. The concatenated histogram is used for identification purposes.

公开(公告)号：CA2717612A1

公开(公告)日：2009-11-19

申请号：CA2717612

申请日：2009-04-13

Applicant: IBM

Inventor： AGGARWAL GAURAV ,  BOLLE RUDOLF MAARTEN ,  JEA TSAI-YANG ,  RATHA NALINI KANTA

IPC: G06K9/00

Abstract: Techniques for generating a gradient characterization for a first fingerprint image are provided. One or more fingerprint feature points are selected from the first fingerprint image. A region is obtained for each of the one or more selected fin-gerprint feature points. The region is a representation of an area proximate a given fingerprint feature point. Each of the obtained regions is divided into a plurality of sub-regions. A histogram is generated for each of the plurality of sub-regions. For each of the one or more selected fingerprint feature points, the one or more generated histograms are combined into a concatenated histogram. The concatenated histogram is used for identification purposes.