A Fuzzy Perception For O - Line Handwritten Signature Veri cation

The purpose of this paper is the assessment of a family of shape factors for oo-line signature veriication. The initial method, suggested in 1], which extracts geometric features, is modiied to assess the performance of veriication in the general case of forgery. W e c o n-tribute to the information coded by adapting the coding method to the image and by i n tegrating a spatial distance into the shape factor de-nition. Moreover, we include the coding of an information related to the dynamic of the signature. To use these two t ypes of information, we propose a fuzzy technique to combine and then obtain one kind of information. We e v aluate this new coding operator with two t ypes of forgery : random forgery and photocopy s i m ulation with some adapted protocols.