DIGITAL ACQUISITION OF A TRACK MANUSCRIPT

摘要

A system and method for digitally acquiring a handwritten trace, said system comprising - an optical sensor (1) comprising: - a surface element (4) - an imager (3), - a stylus (2) ) comprising: - a tip (21) adapted to be brought into contact with the external face of the surface (7) of the surface element (4), wherein the optical sensor (1) is a total reflection biometric optical sensor whose imaging angle θcam is greater than the critical angle of the interface between the surface element (4) and the air, and in that the endpiece is at least partially covered by an outer surface layer composed of a coupling material having a refractive index n2, with n2 n3.sin (θcam), where n3 is the refractive index of the material constituting the surface element (4).