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Journal of Electronic Imaging

Inspection of aeronautical mechanical parts with a pan-tilt-zoom camera: an approach guided by the computer-aided design model
Author(s): Ilisio Viana; Jean-José Orteu; Nicolas Cornille; Florian Bugarin
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Paper Abstract

We focus on quality control of mechanical parts in aeronautical context using a single pan-tilt-zoom (PTZ) camera and a computer-aided design (CAD) model of the mechanical part. We use the CAD model to create a theoretical image of the element to be checked, which is further matched with the sensed image of the element to be inspected, using a graph theory–based approach. The matching is carried out in two stages. First, the two images are used to create two attributed graphs representing the primitives (ellipses and line segments) in the images. In the second stage, the graphs are matched using a similarity function built from the primitive parameters. The similarity scores of the matching are injected in the edges of a bipartite graph. A best-match-search procedure in the bipartite graph guarantees the uniqueness of the match solution. The method achieves promising performance in tests with synthetic data including missing elements, displaced elements, size changes, and combinations of these cases. The results open good prospects for using the method with realistic data.

Paper Details

Date Published: 23 December 2015
PDF: 12 pages
J. Electron. Imaging. 24(6) 061118 doi: 10.1117/1.JEI.24.6.061118
Published in: Journal of Electronic Imaging Volume 24, Issue 6
Show Author Affiliations
Ilisio Viana, Mines Albi-Carmaux (France)
Jean-José Orteu, Univ. de Toulouse (France)
Nicolas Cornille, G2Metric (France)
Florian Bugarin, Mines Albi-Carmaux (France)

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