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Patent Agency Ranking
公开(公告)号：JPH10240943A
公开(公告)日：1998-09-11
申请号：JP2617498
申请日：1998-02-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KASHI RAMANUJAN S , NELSON WINSTON LOWELL , WILFONG GORDON THOMAS
Abstract: PROBLEM TO BE SOLVED: To improve the inspecting precision of a still signature by using still data. SOLUTION: A test signature to be provided as a still two-dimensional pattern is digitized to segment plural strokes and this test signature is compared with a template signature to obtain a dynamic error score to improve a signature inspecting method comparing this error score with a threshold value. The template signature is guided from real time data obtained during inputting an on-line reference signature. The order list of the stroke (stroke permutation) of the template signature is guided out from this real time data. Before or during comparing the test signature and the template signature with each other, the stroke of the test signature is ordered so as to at least partially correspond to the stroke permutation of the template signature. This comparing is executed by using a dynamic planning method between strokes, e.g. Inspecting precision is furthermore improved by combining a dynamic error score and the still error score.
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公开(公告)号：CA2225130A1
公开(公告)日：1998-08-11
申请号：CA2225130
申请日：1997-12-18
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KASHI RAMANUJAN S , NELSON WINSTON LOWELL , WILFONG GORDON THOMAS
Abstract: In a process of signature verification, an off-line test signature is compared to one or more on-line reference signatures. Dynamic data obtained from the reference signature or signatures may be used to improve the thinning of the test signature. Such data may also be used for segmenting the test signature and sequencing the resulting strokes. In some embodiments, the invention includes evaluating a dynamic error, based at least in part on such sequencing of the tes t signature. In some further embodiments, the invention includes producing a rendering of at least one on-line reference signature as a two-dimensional image , and evaluating a static error based, at least in part, on shape-matching between the rendered image and the test signature.
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公开(公告)号：DE69800009T2
公开(公告)日：2000-01-05
申请号：DE69800009
申请日：1998-02-03
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KASHI RAMANUJAN S , WILFONG GORDON THOMAS , NELSON WINSTON LOWELL
Abstract: In a process of signature verification, an off-line test signature is compared to one or more on-line reference signatures. Dynamic data obtained from the reference signature or signatures may be used to improve the thinning of the test signature. Such data may also be used for segmenting the test signature and sequencing the resulting strokes. In some embodiments, the invention includes evaluating a dynamic error, based at least in part on such sequencing of the test signature. In some further embodiments, the invention includes producing a rendering of at least one on-line reference signature as a two-dimensional image, and evaluating a static error based, at least in part, on shape-matching between the rendered image and the test signature.
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公开(公告)号：CA2225130C
公开(公告)日：2001-05-29
申请号：CA2225130
申请日：1997-12-18
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KASHI RAMANUJAN S , WILFONG GORDON THOMAS , NELSON WINSTON LOWELL
Abstract: In a process of signature verification, an off-line test signature is compared to one or more on-line reference signatures. Dynamic data obtained fromthe reference signature or signatures may be used to improve the thinning of the test signature. Such data may also be used for segmenting the test signature and sequencing the resulting strokes. In some embodiments, the invention include s evaluating a dynamic error, based at least in part on such sequencing of the test signature. In some further embodiments, the invention includes producing a rendering of at least one on-line reference signature as a two-dimensional i mage, and evaluating a static error based, at least in part, on shape-matching between therendered image and the test signature.
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公开(公告)号：DE69800009D1
公开(公告)日：1999-08-19
申请号：DE69800009
申请日：1998-02-03
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KASHI RAMANUJAN S , WILFONG GORDON THOMAS , NELSON WINSTON LOWELL
Abstract: In a process of signature verification, an off-line test signature is compared to one or more on-line reference signatures. Dynamic data obtained from the reference signature or signatures may be used to improve the thinning of the test signature. Such data may also be used for segmenting the test signature and sequencing the resulting strokes. In some embodiments, the invention includes evaluating a dynamic error, based at least in part on such sequencing of the test signature. In some further embodiments, the invention includes producing a rendering of at least one on-line reference signature as a two-dimensional image, and evaluating a static error based, at least in part, on shape-matching between the rendered image and the test signature.
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