On-line signature verification
AssigneeInternational Business Machines Corporation
InventorLev Finkelstein
Life of this patent
Estimating the term…
Abstract
A method of determining whether a test sample belongs to the same individual as a plurality of reference samples. The method includes providing respective values of one or more identifying features from the test sample and the plurality of reference samples, representing the test and reference samples by respective points having coordinates in a multi-dimensional space indicative of the respective feature values, and deciding whether the test sample belongs to the same individual as the plurality of reference samples based on a geometrical property of the points.
Claims29
A method of determining whether a test sample belongs to the same individual as a plurality of reference samples, comprising:
- providing respective values of one or more identifying features from the test sample and the plurality of reference samples;
- representing the test and reference samples by respective points having coordinates in a multi-dimensional space indicative of the respective feature values, so as to define a polyhedron in the multi-dimensional space;
- and
- deciding whether the test sample belongs to the same individual as the plurality of reference samples based on a geometrical property of the polyhedron.
Apparatus for determining whether a test sample belongs to the same individual as a plurality of reference samples, comprising:
- an input device which acquires the samples;
- a processor which determines values of one or more features of the samples, represents the samples by corresponding points in a multi-dimensional space having coordinates indicative of the feature values, so as to define a polyhedron in the multi-dimensional space, and calculates a geometrical property of the polyhedron;
- and
- a classifier which determines whether the test sample belongs to the same individual as the plurality of reference samples responsive to the geometrical property.
A computer program product having computer readable program code embodied therein, which code causes a processor receiving a test sample and a plurality of reference samples, wherein each sample is characterized by respective values of one or more identifying features, to represent the test and reference samples by respective points having coordinates in a multi-dimensional space indicative of the respective feature values, so as to define a polyhedron in the multi-dimensional space, and to decide whether the test sample belongs to the same individual as the plurality of reference samples based on a geometrical property of the polyhedron.
Dependencies are inferred from the claim text.