Abstract
In the aviation industry, automated inspection is essential for ensuring quality of production. It allows acceleration of procedures for quality control of parts or mechanical assemblies. As a result, the demand of intelligent visual inspection systems aimed at ensuring high quality in production lines is increasing. In this work, we address a very common problem in quality control. The problem is verification of presence of the correct part and verification of its position. We address the problem in two parts: first, automatic selection of informative viewpoints before the inspection process is started (offline preparation of the inspection) and, second, automatic treatment of the acquired images from said viewpoints by matching them with information in 3D CAD models is launched. We apply this inspection system for detecting defects on aeronautical mechanical assemblies with the aim of checking whether all the subparts are present and correctly mounted. The system can be used during manufacturing or maintenance operations. The accuracy of the system is evaluated on two kinds of platform. One is an autonomous navigation robot, and the other one is a handheld tablet. The experimental results show that our proposed approach is accurate and promising for industrial applications with possibility for real-time inspection.
Highlights
Industrial quality control is often realized as an automated end-of-line inspection system that checks certain features on the products
We present a robust approach for detecting a common type of defect on aeronautical mechanical assemblies whose CAD model we dispose and exploit extensively
We proposed an automated inspection system for mechanical assemblies in an aeronautical context
Summary
Industrial quality control is often realized as an automated end-of-line inspection system that checks certain features on the products. Many industrial companies use computer vision to automate tiresome operations of quality control in mechanical assembly for several reasons. The human operators have implicit limits like overseeing of the missing parts and low repeatability rate [1]. The inspection task must be carried out in a cycle time established for a specific production process which is hard to achieve with manual inspection [2]. Industry robots are employed to conduct the inspection tasks with machine vision systems. These robots provide the physical link between intelligence and action
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