A global feature for on-line signature verification

TLDR: A new global feature for on-line signature verification, named chain code distance (CCD) represents signature shape using the vector quantization, which is expected to increase the performance of the verification system when it is used with other methods in future works.

Abstract: As reported in many researches, the performance of signature verification is quite high in these days. However, as error rate reduces making performance higher cost more efforts and is getting difficult. This paper proposes a new global feature for on-line signature verification, which can be used in addition to the other system. The proposed feature, named chain code distance (CCD) represents signature shape using the vector quantization. A signature is divided into several segmentation and feature points are selected through the process. Then proposed feature is calculated by extracting information from each segment. Experimental results show that the proposed feature can be used as a global feature. The number of included genuine signatures increases rapidly as the threshold increases, but the number of forged signature increases linearly. The experimental result was remarkable for English signature and the result for Japanese signature was acceptable also. Proposed global feature is expected to increase the performance of the verification system when it is used with other methods in future works.