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| DLF-YOLOF: an improved YOLOF-based surface defect detection for steel plate |
| Guang-hu Liu1, Mao-xiang Chu1, Rong-fen Gong1, Ze-hao Zheng1 |
| 1 School of Electronic and Information Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China |
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Abstract Surface defects can affect the quality of steel plate. Many methods based on computer vision are currently applied to surface defect detection of steel plate. However, their real-time performance and object detection of small defect are still unsatisfactory. An improved object detection network based on You Only Look One-level Feature (YOLOF) is proposed to show excellent performance in surface defect detection of steel plate, called DLF-YOLOF. First, the anchor-free detector is used to reduce the network hyperparameters. Secondly, deformable convolution network and local spatial attention module are introduced into the feature extraction network to increase the contextual information in the feature maps. Also, the soft non-maximum suppression is used to improve detection accuracy significantly. Finally, data augmentation is performed for small defect objects during training to improve detection accuracy. Experiments show the average precision and average precision for small objects are 42.7% and 33.5% at a detection speed of 62 frames per second on a single GPU, respectively. This shows that DLF-YOLOF has excellent performance to meet the needs of industrial real-time detection.
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| Cite this article: |
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Guang-hu Liu1,Mao-xiang Chu1,Rong-fen Gong1, et al. DLF-YOLOF: an improved YOLOF-based surface defect detection for steel plate[J]. Journal of Iron and Steel Research International, 2024, 31(02): 442-451.
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2024, Vol. 31 
