Method of Monitoring the Appearance of the Surface of a Tyre

Méthode de contrôle de l'aspect de la surface d'un pneumatique

タイヤの表面の外観をモニタする方法

Guillaume Noyel (1)

1 Société Michelin

Method for detecting an anomaly on the surface of a tire comprising the following steps in the course of which: A-the image of a given anomaly present on the surface of at least one tire is produced, B-with the aid of a collection of filters, a multivariate image of the said surface is constructed in a space of the filters, in which each pixel is represented in the form of a pixel vector, the components of each pixel vector having a value corresponding to the value of this pixel in the image transformed with the aid of each of the filters of the said collection, C-with the aid of a linear function, this multivariate image is transformed from the space of the filters into a spectral space of given dimension whose variables are the filters or combinations of filters of the said collection, so as to form a spectral image, D-a classifier is constructed by determining, for this anomaly,; those zones representative of the spectral space which contain, in a statistically representative manner, the points of the spectral image of the said anomaly transformed into the said spectral space.

Mots clés: Multivariate Image Analysis; Pattern recognition; Texture analysis; Data analysis; Factor analysis; Industry

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

Guillaume Noyel. タイヤの表面の外観をモニタする方法. Japan, Patent n° : JP5779232 (B2). 2015. ⟨hal-01374285⟩