6533b7d5fe1ef96bd12639c0

RESEARCH PRODUCT

Système de détection d'anomalies d'aspect par la technique PTM

subject

description

This documentation details the creation of a support system for the detecting visual sur- face anomalies . This work is based on a technique called Polynomial Texture Mapping (PTM). This technique allows to highlight appearance anomalies by varying the position of the light source. It also makes possible the calculation of the surface topography. This system was designed during the first quarter of 2011 in the SYMME laboratory (Laboratory for Materials and Mechatronics), and is a part of the European research program INTERREG IV. This program aims to enhance a strength of economic activity on both sides of the border France - Switzerland : the realization of high-value products (watches, automotive, medical, automation ...). These products require a perfect surface quality evaluation, and the human evaluation leads a high variability of judgments. This project brings together different industrial companies, the "Centre Technique du DECol- letage" (CTDEC) in Cluses and the "Centre Technique de l'HORlogerie et de la joallerie"(CETEHOR) in Besanc ̧on, and two research laboratories : The SYMME Lab. (University of Savoie) and The Lab- oratoire of Microtechnics Production (Ecole Polytechnique Federale de Lausanne).