Title :
Image Analysis of Metallic Ropes for the Measurement of the Lay Length
Author :
Vallan, Alberto ; Molinari, Filippo
Author_Institution :
Dipt. di Elettron., Politec. di Torino, Torino
Abstract :
The lay length of metallic wire ropes is an important dimensional quantity whose analysis is useful to highlight rope deformations due to distributed damages. The paper describes a measurement system based on a camera, which is employed to acquire images of hauling ropes, and on an image and signal processing algorithm that extracts the rope contour and measures the distance among rope strands. A mathematical model of the rope contour has been derived and it has been employed to test the proposed algorithm with simulated data. The simulation results have been also employed to set the view-angle of the vision system. Preliminary tests have been carried out on an aerial cableway with a general purpose camera in order to test the feasibility of the proposed measurement system.
Keywords :
data acquisition; deformation; feature extraction; image processing; image sensors; length measurement; ropes; aerial cableway; camera; contour extraction; distributed damages; image acquisition; image analysis; image processing algorithm; lay length measurement; metallic wire ropes; rope deformation; vision system; Cameras; Corrosion; Image analysis; Inspection; Length measurement; Machine vision; Signal processing algorithms; Steel; System testing; Wire; Steel wire rope; non-destructive test; sinefit; vision system;
Conference_Titel :
Instrumentation and Measurement Technology Conference Proceedings, 2008. IMTC 2008. IEEE
Conference_Location :
Victoria, BC
Print_ISBN :
978-1-4244-1540-3
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2008.4547202
