Recent developments in the study of rapid human movements with the kinematic theory: Applications to handwriting and signature synthesis

Réjean Plamondon (1) , Christian O’reilly (1) , Javier Galbally (2) , Abdullah Almaksour (3) , Éric Anquetil (3)

1 Scribens - Laboratoire Scribens, École Polytechnique de Montréal, Canada
2 ATVS - Biometric Recognition Group
3 IntuiDoc - intuitive user interaction for document

Human movement modeling can be of great interest for the design of pattern recognition systems relying on the understanding of the fine motor control (such as on-line handwriting recognition or signature verification) as well as for the development of intelligent systems involving in a way or another the processing of human movements. In this paper, we briefly list the different models that have been proposed in order to characterize the handwriting process and focus on a representation involving a vectorial summation of lognormal functions: the Sigma-lognormal model. Then, from a practical perspective, we describe a new stroke extraction algorithm suitable for the reverse engineering of handwriting signals. In the following section it is shown how the resulting representation can be used to study the writer and signer variability. We then report on two joint projects dealing with the automatic generation of synthetic specimens for the creation of large databases. The first application concerns the automatic generation of totally synthetic signature specimens for the training and evaluation of verification performances of automatic signature recognition systems. The second application deals with the synthesis of handwritten gestures for speeding up the learning process in customizable on-line recognition systems to be integrated in electronic pen pads.

Mots clés: Customizable on-line recognition systems; Signature verification; Handwriting recognition; Gesture synthesis; Signature synthesis; Motor control; Sigma-lognormal model; Kinematic theory; Human movement modeling

Domaines: Vision par ordinateur et reconnaissance de formes [cs.CV]; Traitement du signal et de l'image [eess.SP]

Réjean Plamondon, Christian O’reilly, Javier Galbally, Abdullah Almaksour, Éric Anquetil. Recent developments in the study of rapid human movements with the kinematic theory: Applications to handwriting and signature synthesis. Pattern Recognition Letters, 2014, 35, pp.225-235. ⟨10.1016/j.patrec.2012.06.004⟩. ⟨hal-00801866⟩