EXTRACTION METHOD OF RANDOM CHARACTERIZATIONS FROM A MATERIAL ELEMENT AND METHOD TO GENERATE A DECOMPOSITION BASE TO IMPLEMENT THE EXTRACTION METHOD.

摘要

Method for generating a decomposition base to extract a random characterization from an object material element, comprising the following steps: - define an acquisition opening and an exploration path, - generate a number N of acquisitions, in accordance with the acquisition opening, of structural characteristics of at least one region of the object material element itself, or of a different material element, - digitizing, along the exploration path, each of the acquisitions in the form of an acquisition vector, - analyze all acquisition vectors using statistical methods to obtain a decomposition base formed by decomposition vectors, which enables the representation of each acquisition vector in the form of an image vector formed by components and corresponding to the contribution of a vector of decomposition in the acquisition vector, - analyze at least part d and the image vectors to identify deterministic components common to all image vectors, the other components being random components, and comprising one or more of the following steps: - record a reading mask that, in each image vector generated with the decomposition base, gives the position of any deterministic component and / or the position of any random component, or removing the deterministic components from the decomposition base by erasing the deterministic decomposition vectors and recording a reduced decomposition base.