Process for detecting surface defects on a textured surface

US6040853A · kind A · utility

Assignees

• LABORATOIRE CENTRAL DES PONTS ET CHAUSSEES · FR
• L'Institut de Recherche et D'Enseignement Superieur aux Techniques de Electronique · FR

Inventors

• Philippe Delagnes · Baye, FR
• Dominique Barba · Carquefou, FR

Key dates

• Filing date: Oct 2, 1997
• Grant date: Mar 21, 2000
• Expiry date: Oct 2, 2017

Classification

• Technology area (CPC G): Physics
• CPC primary: G01C7/04
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A process for detecting defects in a textured suface, particularly on a highway. The process consists in displacing with respect to the surface a camera presenting an inclination and in processing by processing systems the successive images taken by the camera. A mathematical processing is effected on sub-images, corresponding to the same spatial portion of the surface, taken at different consecutive instants.