Regionally enhanced multiphase segmentation technique for damaged surfaces

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Title: Regionally enhanced multiphase segmentation technique for damaged surfaces
Authors: O'Byrne, Michael
Ghosh, Bidisha
Schoefs, Franck
Pakrashi, Vikram
Permanent link: http://hdl.handle.net/10197/10417
Date: 15-Sep-2014
Online since: 2019-05-13T11:21:54Z
Abstract: Imaging‐based damage detection techniques are increasingly being utilized alongside traditional visual inspection methods to provide owners/operators of infrastructure with an efficient source of quantitative information for ensuring their continued safe and economic operation. However, there exists scope for significant development of improved damage detection algorithms that can characterize features of interest in challenging scenes with credibility. This article presents a new regionally enhanced multiphase segmentation (REMPS) technique that is designed to detect a broad range of damage forms on the surface of civil infrastructure. The technique is successfully applied to a corroding infrastructure component in a harbour facility. REMPS integrates spatial and pixel relationships to identify, classify, and quantify the area of damaged regions to a high degree of accuracy. The image of interest is preprocessed through a contrast enhancement and color reduction scheme. Features in the image are then identified using a Sobel edge detector, followed by subsequent classification using a clustering‐based filtering technique. Finally, support vector machines are used to classify pixels which are locally supplemented onto damaged regions to improve their size and shape characteristics. The performance of REMPS in different color spaces is investigated for best detection on the basis of receiver operating characteristics curves. The superiority of REMPS over existing segmentation approaches is demonstrated, in particular when considering high dynamic range imagery. It is shown that REMPS easily extends beyond the application presented and may be considered an effective and versatile standalone segmentation technique.
Funding Details: Irish Research Council for Science, Engineering and Technology
Type of material: Journal Article
Publisher: Wiley Online Library
Journal: Computer-Aided Civil and Infrastructure Engineering
Volume: 29
Issue: 9
Start page: 644
End page: 658
Copyright (published version): 2014 Computer-Aided Civil and Infrastructure Engineering
Keywords: Image ProcessingHigh Dynamic Range (HDR)Receiver Operating Characteristics (ROC)CorrosionInfrastructure Maintenance ManagementSupport Vector Machines (SVM)
DOI: 10.1111/mice.12098
Language: en
Status of Item: Peer reviewed
Appears in Collections:Mechanical & Materials Engineering Research Collection

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