摘要
受公路隧道内照明条件变化、图像畸变等因素影响,衬砌裂缝图像中不同尺度特征的提取难度增加,影响了公路隧道衬砌细小裂缝的识别效果,因此本文提出一种基于深度学习SSD算法的公路隧道衬砌细小裂缝识别方法。首先,采用加权平均法对公路隧道图像进行灰度化处理,通过线段检测算法提取图像中的线段特征,利用Sobel算子获取图像在水平与垂直方向上的边缘检测结果,基于透视几何原理对畸变图像进行校正;其次,引入深度学习SSD算法,利用回归模型调整SSD算法先验框的位置,并对有效特征层上的每个先验框进行类别预测,结合非极大值抑制技术,筛选出最优的预测框,从而实现裂缝的精确识别。实验结果证明:本文方法识别的衬砌裂缝与隧道图像中裂缝基本吻合,AUC值为0.956,可有效提高公路隧道衬砌细小裂缝识别精度,应用性能更好。
Affected by factors such as changes in lighting conditions and image distortion in highway tunnels,the difficulty of extracting features at different scales from lining crack images has increased,which has affected the recognition of small cracks in highway tunnel lining.Therefore,a method for identifying of small cracks in highway tunnel lining based on deep learning SSD algorithm is proposed in this paper.Firstly,using the weighted average method to perform grayscale processing on highway tunnel images,extracting line segment features from the images through line segment detection algorithms,obtaining edge detection results of the image in both horizontal and vertical directions using Sobel operators,and correcting distorted images based on perspective geometry principles;secondly,introducing deep learning SSD algorithm,using regression model to adjust the position of prior boxes in SSD algorithm,and predicting the category of each prior box on the effective feature layer,combining non maximum suppression technology,the optimal prediction box is selected to achieve accurate identification of cracks.Experimental results show that the lining cracks identiflcation by this method are basically consistent with the cracks in tunnel images,with an AUC value of 0.956,which can effectively improve the accuracy of identifying small cracks in highway tunnel lining and have better application performance.
作者
金虎
申玉生
方勇
于丽
周佳媚
JIN Hu;SHEN Yu-sheng;FANG Yong;YU Li;ZHOU Jia-mei(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China)
出处
《吉林大学学报(工学版)》
北大核心
2025年第11期3653-3659,共7页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金面上项目(52278414).
关键词
深度学习SSD算法
公路隧道
衬砌细小裂缝
识别
deep learning SSD algorithm
highway tunnel
small cracks in the lining
identificat
