Slice-Aided Defect Detection in Ultra High-Resolution Wind Turbine Blade Images

The processing of aerial images taken by drones is a challenging task due to their high resolution and the presence of small objects. The scale of the objects varies diversely depending on the position of the drone, which can result in loss of information or increased difficulty in detecting small o...

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Main Authors: Imad Gohar, Abderrahim Halimi, John See, Weng Kean Yew, Cong Yang
Format: Article
Language:English
Published: MDPI AG 2023-10-01
Series:Machines
Subjects:
Online Access:https://www.mdpi.com/2075-1702/11/10/953
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author Imad Gohar
Abderrahim Halimi
John See
Weng Kean Yew
Cong Yang
author_facet Imad Gohar
Abderrahim Halimi
John See
Weng Kean Yew
Cong Yang
author_sort Imad Gohar
collection DOAJ
description The processing of aerial images taken by drones is a challenging task due to their high resolution and the presence of small objects. The scale of the objects varies diversely depending on the position of the drone, which can result in loss of information or increased difficulty in detecting small objects. To address this issue, images are either randomly cropped or divided into small patches before training and inference. This paper proposes a defect detection framework that harnesses the advantages of slice-aided inference for small and medium-size damage on the surface of wind turbine blades. This framework enables the comparison of different slicing strategies, including a conventional patch division strategy and a more recent slice-aided hyper-inference, on several state-of-the-art deep neural network baselines for the detection of surface defects in wind turbine blade images. Our experiments provide extensive empirical results, highlighting the benefits of using the slice-aided strategy and the significant improvements made by these networks on an ultra high-resolution drone image dataset.
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spelling doaj.art-54952526b7d34e29bbd9360156471dff2023-11-19T17:08:34ZengMDPI AGMachines2075-17022023-10-01111095310.3390/machines11100953Slice-Aided Defect Detection in Ultra High-Resolution Wind Turbine Blade ImagesImad Gohar0Abderrahim Halimi1John See2Weng Kean Yew3Cong Yang4School of Engineering and Physical Sciences, Heriot-Watt University, Putrajaya 62200, MalaysiaSchool of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UKSchool of Mathematical and Computer Sciences, Heriot-Watt University, Putrajaya 62200, MalaysiaSchool of Engineering and Physical Sciences, Heriot-Watt University, Putrajaya 62200, MalaysiaSchool of Future Science and Engineering, Soochow University, Suzhou 215006, ChinaThe processing of aerial images taken by drones is a challenging task due to their high resolution and the presence of small objects. The scale of the objects varies diversely depending on the position of the drone, which can result in loss of information or increased difficulty in detecting small objects. To address this issue, images are either randomly cropped or divided into small patches before training and inference. This paper proposes a defect detection framework that harnesses the advantages of slice-aided inference for small and medium-size damage on the surface of wind turbine blades. This framework enables the comparison of different slicing strategies, including a conventional patch division strategy and a more recent slice-aided hyper-inference, on several state-of-the-art deep neural network baselines for the detection of surface defects in wind turbine blade images. Our experiments provide extensive empirical results, highlighting the benefits of using the slice-aided strategy and the significant improvements made by these networks on an ultra high-resolution drone image dataset.https://www.mdpi.com/2075-1702/11/10/953surface defect detectionwind turbine bladesultra high-resolution imagesdrone imagessmall object detectiondeep neural networks
spellingShingle Imad Gohar
Abderrahim Halimi
John See
Weng Kean Yew
Cong Yang
Slice-Aided Defect Detection in Ultra High-Resolution Wind Turbine Blade Images
Machines
surface defect detection
wind turbine blades
ultra high-resolution images
drone images
small object detection
deep neural networks
title Slice-Aided Defect Detection in Ultra High-Resolution Wind Turbine Blade Images
title_full Slice-Aided Defect Detection in Ultra High-Resolution Wind Turbine Blade Images
title_fullStr Slice-Aided Defect Detection in Ultra High-Resolution Wind Turbine Blade Images
title_full_unstemmed Slice-Aided Defect Detection in Ultra High-Resolution Wind Turbine Blade Images
title_short Slice-Aided Defect Detection in Ultra High-Resolution Wind Turbine Blade Images
title_sort slice aided defect detection in ultra high resolution wind turbine blade images
topic surface defect detection
wind turbine blades
ultra high-resolution images
drone images
small object detection
deep neural networks
url https://www.mdpi.com/2075-1702/11/10/953
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AT abderrahimhalimi sliceaideddefectdetectioninultrahighresolutionwindturbinebladeimages
AT johnsee sliceaideddefectdetectioninultrahighresolutionwindturbinebladeimages
AT wengkeanyew sliceaideddefectdetectioninultrahighresolutionwindturbinebladeimages
AT congyang sliceaideddefectdetectioninultrahighresolutionwindturbinebladeimages