Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 234, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2019.117367
Keywords
Concrete; Crack detection; Deep learning; Convolutional neural network; Pixel-wise segmentation; Structural health monitoring
Categories
Funding
- Chinese National Science and Technology Major Project [2017ZX05008-001]
- National Natural Science Foundation of China [41872214]
- Special Fund from Zhejiang Provincial Government, China [98]
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Automatic detection and segmentation of concrete cracks in tunnels remains a high-priority task for civil engineers. Image-based crack segmentation is an effective method for crack detection in tunnels. With the development of deep learning techniques, especially the development of image segmentation based on convolutional neural networks, new opportunities have been brought to crack detection. In this study, an improved deep fully convolutional neural network, named as CrackSegNet, is proposed to conduct dense pixel-wise crack segmentation. The proposed network consists of a backbone network, dilated convolution, spatial pyramid pooling, and skip connection modules. These modules can be used for efficient multiscale feature extraction, aggregation, and resolution reconstruction which greatly enhance the overall crack segmentation ability of the network. Compared to the conventional image processing and other deep learning-based crack segmentation methods, the proposed network shows significantly higher accuracy and generalization, making tunnel inspection and monitoring highly efficient, low cost, and eventually automatable. (C) 2019 Elsevier Ltd. All rights reserved.
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