Computer Engineering and Applications ›› 2024, Vol. 60 ›› Issue (14): 105-113.DOI: 10.3778/j.issn.1002-8331.2304-0175

• Pattern Recognition and Artificial Intelligence • Previous Articles     Next Articles

Classification Network Integrated with Multidimensional Attention Strategy of Underground Disaster Images

ZHANG Gong, XU Ming, LI Kaipeng, WANG Bin   

  1. 1.Underground Space Research Institute, Underground Space Technology Development Co., Ltd., CNACG, Xi’an 710100, China
    2.School of Electronic Engineering, Xidian University, Xi’an 710071, China
  • Online:2024-07-15 Published:2024-07-15

集成多维度注意力的地下病害图像分类网络

张弓,许明,李开鹏,王斌   

  1. 1.中煤(西安)地下空间科技发展有限公司 地下空间研究院,西安 710100
    2.西安电子科技大学 电子工程学院,西安 710071

Abstract: Ground penetrating radar (GPR) is a non-destructive exploration technology that utilizes high-frequency ultra-wideband signals to detect the distribution of subsurface objects and media. Benefiting from the advantages of non-destructiveness, high efficiency, and high resolution, GPR has been widely applied in underground defect detection task of urban roads. Illustrating the radar echo wave of subsurface structure, GPR B-scan images are a main means to detect underground disaster; however, compared to natural images, automatic interpretation of GPR B-scan ones is a more challenging task because of same objects with different spectra, different objects with same spectrum as well as heavy noise pollution. Aiming to improve the accuracy of subsurface disasters detection methods, a disasters classification network, i.e., MA-ResNeXt, based on ResNetXt50 is proposed by combining multi-dimensional attention mechanism, atrous space pyramid pool and multi-scale feature extraction structure. The proposed network is trained and tested on real GPR B-scan images of three common subsurface disasters, e.g., void, cavity underneath pavement (CUP) and loosely infilled void (LIV). The comparison results show that classification accuracy of the proposed network approaches 98.2%, and illustrate that the network can effectively realize accurate classification of underground disasters.

Key words: deep learning, ground penetrating radar, underground disaster

摘要: 探地雷达技术(ground penetrating radar,GPR)是一种利用高频超宽带信号探测地下目标和介质分布的勘探技术。具有无损、高效、高分辨率等优点,被广泛运用于城市道路的地下病害探测任务。GPR的B-scan图像反映地下结构的回波信息,是判定地下病害的主要依据;但相对于自然图像,除噪声较大外,其中同物异谱、异物同谱情况也十分普遍,导致人工解译困难。针对目前基于B-scan数据的地下病害自动分类方法精度较低,基于ResNeXt50结合多维度注意力机制和空洞空间金字塔池化,提出了MA-ResNeXt网络以实现地下病害的自动分类。模型训练、测试数据使用空洞(void)、脱空(cavity underneath pavement,CUP)和疏松(loosely infilled void,LIV)三种常见道路地下病害的真实探地雷达数据,分类准确率到达98.2%,实现了道路地下病害的自动识别。

关键词: 深度学习, 探地雷达, 地下病害