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

fYear

2008

fDate

12-15 May 2008

Firstpage

1097

Lastpage

1101

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference Proceedings, 2008. IMTC 2008. IEEE

Conference_Location

Victoria, BC

ISSN

1091-5281

Print_ISBN

978-1-4244-1540-3

Electronic_ISBN

1091-5281

Type

conf

DOI

10.1109/IMTC.2008.4547202

Filename

4547202