Abstract: A method for generating at least one information about the production of a handwritten, hand-affixed or printed trace on a surface. The method includes extracting several features describing the trace from at least one three-dimensional image of the trace, acquired by an imagery system. The method includes inputting the extracted features in a trained module to output the at least one information. The module has been trained beforehand with a plurality of previously-acquired three-dimensional images of traces and corresponding information related to the production of these traces.

Abstract: A method for identifying or for verifying the identity of a user, using a plurality, of previously acquired reference signature vectors, a handwritten signature of the user and at least one additional item of handwritten information linked to the user that arc affixed beforehand to an in particular mobile digital sensor, in which method: a) said handwritten signature of the user and said at least one additional item of information are fused in order to generate at least one test signature vector, b) said at least one test signature vector is compared with a plurality of said reference signature vectors, and c) a likelihood score is generated on the basis at least of this comparison in order to identify or to verify the identity of the user.

Abstract: A method for generating at least one information about the production of a handwritten, hand-affixed or printed trace on a surface. The method includes extracting several features describing the trace from at least one three-dimensional image of the trace, acquired by an imagery system. The method includes inputting the extracted features in a trained module to output the at least one information. The module has been trained beforehand with a plurality of previously-acquired three-dimensional images of traces and corresponding information related to the production of these traces.