G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 9/62 (2006.01) G06K 9/00 (2006.01) G07C 9/00 (2006.01)
Patent
CA 2099371
Apparatus and method for comparing a test handwritten signature with a reference signature where each of the test and reference signatures have been acquired by generating three electrical digital position signals characterizing a trajectory of a handwritten signature. The apparatus comprises a device for calculating variations of simple dynamic parameters of the test sign- ature with respect to the simple dynamic parameters of the reference signature, by calculating a first evaluating function C1; a de- vice for comparing C1 with a first threshold value, and rejecting said test signature if C1 passes the first threshold value; a device for calculating local intrinsic correlations of V.sigma. and V~ values of the test and reference signatures for each pair of characteristic segments, by calculating a second evaluating function C2; a device for comparing C2 with a third threshold value, and rejecting the test signature if C2 passes the third threshold value; a device for calculating a classifying function C b; and a device for com- paring the classifying function C b with a fourth threshold value, and rejecting the test signature if C b passes the fourth threshold value.
Ecole Polytechnique
Robic
Sign@metric Inc.
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