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Frontiers of Structural and Civil Engineering

ISSN 2095-2430

ISSN 2095-2449(Online)

CN 10-1023/X

邮发代号 80-968

2019 Impact Factor: 1.68

Frontiers of Structural and Civil Engineering  2024, Vol. 18 Issue (3): 334-349   https://doi.org/10.1007/s11709-024-1076-0
  本期目录
Road sub-surface defect detection based on gprMax forward simulation-sample generation and Swin Transformer-YOLOX
Longjian LI1, Li YANG2, Zhongyu HAO2, Xiaoli SUN3, Gongfa CHEN1()
1. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China
2. JSTI Group Guizhou Engineering Survey and Design Co., Ltd., Guangzhou 510800, China
3. Guangzhou Municipal Engineering Testing Co., Ltd., Guangzhou 510520, China
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Abstract

Training samples for deep learning networks are typically obtained through various field experiments, which require significant manpower, resource and time consumption. However, it is possible to utilize simulated data to augment the training samples. In this paper, by comparing the actual experimental model with the simulated model generated by the gprMax [1] forward simulation method, the feasibility of obtaining simulated samples through gprMax simulation is validated. Subsequently, the samples generated by gprMax forward simulation are used for training the network to detect objects in existing real samples. At the same time, aiming at the detection and intelligent recognition of road sub-surface defects, the Swin-YOLOX algorithm is introduced, and the excellence of the detection network, which is improved by augmenting the simulated samples with real samples, is further verified. By comparing the prediction performance of the object detection models, it is observed that the model trained with mixed samples achieved a recall of 94.74% and a mean average precision (mAP) of 97.71%, surpassing the model trained only on real samples by 12.95% and 15.64%, respectively. The feasibility and excellence of training the model with mixed samples are confirmed. The potential of using a fusion of simulated and existing real samples instead of repeatedly acquiring new real samples by field experiment is demonstrated by this study, thereby improving detection efficiency, saving resources, and providing a new approach to the problem of multiple interpretations in ground penetrating radar (GPR) data.

Key wordsground penetrating radar    gprMax    forward modeling    sample generation    Swin-YOLOX    object detection
收稿日期: 2023-07-30      出版日期: 2024-06-12
Corresponding Author(s): Gongfa CHEN   
 引用本文:   
. [J]. Frontiers of Structural and Civil Engineering, 2024, 18(3): 334-349.
Longjian LI, Li YANG, Zhongyu HAO, Xiaoli SUN, Gongfa CHEN. Road sub-surface defect detection based on gprMax forward simulation-sample generation and Swin Transformer-YOLOX. Front. Struct. Civ. Eng., 2024, 18(3): 334-349.
 链接本文:  
https://academic.hep.com.cn/fsce/CN/10.1007/s11709-024-1076-0
https://academic.hep.com.cn/fsce/CN/Y2024/V18/I3/334
Fig.1  
Fig.2  
Fig.3  
Fig.4  
Fig.5  
Fig.6  
Fig.7  
Fig.8  
Part Size of the opening (cm) (Position 1) Size of the opening (cm) (Position 2) Survey line Antenna frequency (MHz)
Part A 70 × 70 × 70 40 × 40 × 40 left wall-back wall 170, 600
Part B 100 × 100 × 100 70 × 70 × 70 right wall-back wall-left wall 170, 600
right wall-back wall-left wall 170, 600
Part C 70 × 70 × 70(Acrylic box) 70 × 70 × 70 right wall-back wall-left wall 600
left wall-back wall-right wall 600
Tab.1  
Fig.9  
Fig.10  
Fig.11  
Fig.12  
Medium Material fill ratio Radar step size (m) Defect width range (m) Defect depth (m) Time window size (ns)
Sand 0.59 0.05 (2,3) 1.5 5e–8
Tab.2  
Fig.13  
Fig.14  
Model Sample Training set Validation set Test set Total
Model trained on real samples real samples 1100 110 110 1320
simulated samples 0 40 40 80
total 1100 150 150 1400
Model trained on mixed samples real samples 1100 110 110 1320
simulated samples 800 40 40 880
total 1900 150 150 2200
Tab.3  
Parameter name Parameter value
Network algorithm Swin-YOLOX
Swim-T block groups [2,2,6,2]
Downsampling factors [4,8,16,32]
Number of iterations 300
Learning rate 0.0001
Optimizer AdamW
Batch size 4
Momentum 0.9
Weight decay coefficient 0.0001
Validation frequency 5
Tab.4  
Fig.15  
Fig.16  
Fig.17  
Fig.18  
Fig.19  
Fig.20  
Network model Training model with real samples Training model with mixed samples
mAP 0.5 recall mAP 0.5 recall
Swin-YOLOX 82.07% 81.79% 97.71% 94.74%
Tab.5  
Network model mAP0.5 FPS
Swin-YOLOX 97.71% 24
YOLOX(CSPDarknet) 87.53% 37
YOLOv5 86.21% 33
YOLOv3(Darknet-53) 81.37% 26
Faster R-CNN 93.76% 18
Tab.6  
Fig.21  
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