Bin Li, Cheng Wang, Jing Wu, Jichao Liu, Lijia Tong, Zhenping Guo. Surface Defect Detection of Aeroengine Components Based on Improved YOLOv4 Algorithm[J]. Laser & Optoelectronics Progress, 2021, 58(14): 1415004
- Laser & Optoelectronics Progress
- Vol. 58, Issue 14, 1415004 (2021)
Fig. 1. YOLOv4 network structure
Fig. 2. Improved YOLOv4 network structure
Fig. 3. Type of defect. (a) Crack; (b) gap; (c) pit; (d) scratch
Fig. 4. Data enhancement diagram. (a) Original picture; (b) horizontal flip; (c) exposure adjustment; (d) Mosaic data enhancement
Fig. 5. Data labeling diagram. (a) Original picture; (b) picture annotation example; (c) xml tag file
Fig. 6. Loss function curve
Fig. 7. Various defect detection results. (a) (e) Crack; (b) (f) gap; (c) (g) pit; (d) (h) scratch
Fig. 8. Comparison of the AP of different algorithms under the original YOLOv4 network
Fig. 9. Comparison of the Fβ of different algorithms under the original YOLOv4 network
Fig. 10. Comparison of the AP of different networks under improved parameter adjustment algorithm
Fig. 11. Comparison of the Fβ of different networks under improved parameter adjustment algorithm
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Table 1. Improve the performance comparison of YOLOv4
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Table 2. Comparison of detection performance of different algorithms
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