Method for determining a reference autograph character string on the basis of a set of sample autograph character strings from the same writer

摘要

In a method for determining a reference autograph character string on the basis of a set of sample autograph character strings from the same writer, a particularly characteristic autograph character string can be selected from a set of produced sample autograph character strings, e.g. signatures. In signature verification, such references are needed to serve as a comparison measure in the identification of the signer. The method according to the invention divides the produced character strings of a sample set of signatures into strokes according to the execution, and compares individual strokes with respect to the recorded dynamic parameters, such as for example pressure and locus coordinates and writing speed, in order to enable the determination of the deviation of all the strokes of the sample character strings from one another. From the set of sample character strings, that string is then selected as the reference character string which comprises the smallest values to the totality of all other sample character strings. In this way it is ensured that the most representative sample character string is brought into use as the reference character string.