| 摘要 |
<p>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 signature with respect to the simple dynamic parameters of the reference signature, by calculating a first evaluating function C1; a device 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 Vσ and VΥ 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 Cb; and a device for comparing the classifying function Cb with a fourth threshold value, and rejecting the test signature if Cb passes the fourth threshold value.</p> |
