23 December 2015 Inspection of aeronautical mechanical parts with a pan-tilt-zoom camera: an approach guided by the computer-aided design model
Author Affiliations +
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.
© 2015 SPIE and IS&T
Ilisio Viana, Ilisio Viana, Jean-José Orteu, Jean-José Orteu, Nicolas Cornille, Nicolas Cornille, Florian Bugarin, Florian Bugarin, } "Inspection of aeronautical mechanical parts with a pan-tilt-zoom camera: an approach guided by the computer-aided design model," Journal of Electronic Imaging 24(6), 061118 (23 December 2015). https://doi.org/10.1117/1.JEI.24.6.061118 . Submission:
JOURNAL ARTICLE
12 PAGES


SHARE
Back to Top