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- Title
Visual measurement and tracking in laser hybrid welding.
- Authors
Fennander, Henri; Kyrki, Ville; Fellman, Anna; Salminen, Antti; Kälviäinen, Heikki
- Abstract
This paper presents a novel system for the automatic analysis of a hybrid welding process. High-speed imaging and laser illumination are used to measure the regularity of electric arc frequency and flight directions of filler metal droplets. A fuzzy c-means clustering method is used to detect arcs and segment the video sequences. The droplets are localized by combining principal component analysis and a support vector machine classifier. The flight of a droplet is tracked using Kalman filtering. Experiments indicate that the system is able to track the flights of droplets and to determine the regularity of the arc frequency with a high accuracy if the imaging conditions are stable.
- Subjects
WELDING; LASERS; LIGHTING; FLIGHT; KALMAN filtering
- Publication
Machine Vision & Applications, 2009, Vol 20, Issue 2, p103
- ISSN
0932-8092
- Publication type
Article
- DOI
10.1007/s00138-007-0111-1