Abstract
The inspection of the nodal welds of off-shore steel structures is a necessary but hazardous task at present performed at regular intervals by divers. Automation of this task is an on-going research effort. One requirement for automation is the accurate location of the weld roots and it is this which is considered here. A brief description of the system is provided as well as a summary of the problems of imaging underwater. This is followed by a description of how the relevant segments of the degraded laser stripe can be identified using the Hough transform. The Rainflow method (originally proposed by Tatsuo Endo for analysis of stress histories) is then used to rapidly identify the desired features on the parameter surface and hence locate the weld roots.
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© 1995 Springer-Verlag Berlin Heidelberg
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Greig, A.R. (1995). Application of the Hough transform for weld inspection underwater. In: Braccini, C., DeFloriani, L., Vernazza, G. (eds) Image Analysis and Processing. ICIAP 1995. Lecture Notes in Computer Science, vol 974. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-60298-4_339
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DOI: https://doi.org/10.1007/3-540-60298-4_339
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