Skip to Main content Skip to Navigation
Theses

Inspection automatisée d’assemblages mécaniques aéronautiques par vision artificielle : une approche exploitant le modèle CAO

Abstract : The work presented in this manuscript deals with automated inspection of aeronautical mechanical parts using computer vision. The goal is to decide whether a mechanical assembly has been assembled correctly i.e. if it is compliant with the specifications. This work was conducted within two industrial projects. On one hand the CAAMVis project, in which the inspection sensor consists of a dual stereoscopic head (stereovision) carried by a robot, on the other hand the Lynx© project, in which the inspection sensor is a single Pan/Tilt/Zoom camera (monocular vision). These two projects share the common objective of exploiting as much as possible the CAD model of the assembly (which provides the desired reference state) in the inspection task which is based on the analysis of the 2D images provided by the sensor. The proposed method consists in comparing a 2D image acquired by the sensor (referred to as "real image") with a synthetic 2D image generated from the CAD model. The real and synthetic images are segmented and then decomposed into a set of 2D primitives. These primitives are then matched by exploiting concepts from the graph theory, namely the use of a bipartite graph to guarantee the respect of the uniqueness constraint required in such a matching process. The matching result allows to decide whether the assembly has been assembled correctly or not. The proposed approach was validated on both simulation data and real data acquired within the above-mentioned projects.
Complete list of metadatas

Cited literature [84 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-01590619
Contributor : Abes Star :  Contact
Submitted on : Tuesday, September 19, 2017 - 5:56:06 PM
Last modification on : Thursday, February 27, 2020 - 1:17:34 AM

File

VianaDoEspiritoSantoIlisioDiff...
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01590619, version 1

Citation

Ilísio Viana Do Espírito Santo. Inspection automatisée d’assemblages mécaniques aéronautiques par vision artificielle : une approche exploitant le modèle CAO. Optique [physics.optics]. Ecole des Mines d'Albi-Carmaux, 2016. Français. ⟨NNT : 2016EMAC0022⟩. ⟨tel-01590619⟩

Share

Metrics

Record views

1964

Files downloads

537