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李   瑞 ， 陈    飞

 

（ 江苏省地质调查研究院 ，江苏 南京 210000)

摘   要 ：轻钢芯柱－保温夹层组合砌体墙的裸露部分受自然因素影响易出现墙体损伤，影响墙体的使用寿命，为此提出组合砌体墙损伤红外热像检测方法。该方法通过超声红外热成像技术，获取组合砌体墙损伤的红外图像，基于双边滤波方法，提升了组合砌体墙损伤图像的低照度；基于图像处理技术和形态学检测技术，对组合砌体墙损伤边缘进行精准提取，确定损伤程度 ，实现精确检测。结果表明： 当图像数量为 20 ~ 100 张时，该方法检测的 mAP 值与召回率均高于 90. 00% ,  墙体损伤检测较为完整且损伤支线明显，直观表现了检测效果； 准确度均高于 95. 00% ,  提升了墙体损伤检测方法的检测完整度；平均 IoU 均高于 85. 00% ,  有效提高了损伤区域与标定区域之间的重叠率。该方法的检测效果好、性能高。

关键词：轻钢芯柱－保温夹层组合砌体墙；红外热像检测技术 ；墙体损伤检测；损伤边缘提取；小波变换 

中图分类号：TP69           

文献标志码：A           

文章编号： 1005- 8249   (2024)  05- 0092- 05

DOI:10. 19860/j.cnki.issn1005 - 8249.2024.05 .017

 

LI Rui ,  CHEN Fei

(Geological Survey of Jiangsu Province ,  Nanjing 210000 ,  China)

Abstract: The exposed part of the light steel core column insulation sandwich composite masonry wall is prone to wall damage due to natural factors, which affects the service life of the wall. Therefore, an infrared thermal imaging detection method for damage of composite masonry walls is proposed. This method uses ultrasonic infrared thermal imaging technology to obtain infrared images of damage to composite masonry walls, filtering out pixels below the optimal threshold. Based on the bilateral filtering method, Based on image processing technology and morphological detection technology, accurate extraction of damaged edges in composite masonry walls is carried out to determine the severity of the damage and achieve precise detection. The results showed that when the number of images was between 20 and 100, the mAP value and recall rate detected by our method were both higher than 90.00%. The wall damage detection was relatively complete and the damage branches were obvious, which intuitively demonstrated the detection effect; The accuracy is higher than 95.00%, which improves the completeness of the wall damage detection method; The average IoU is higher than 85.00%, effectively improving the overlap rate between the damaged area and the calibration area. This method has good detection effect and high detection performance.

Keywords :  light steel  core  column -  thermal  insulation  sandwich composite masonry wall;  infrared thermal image detection technology;  wall damage detection;  damage edge extraction;  wavelet transform

作者简介：李   瑞  (1981 —) ,  男 ，本科 ，高级工程师 ，研究方向：岩土及建材物化性能相关的实验测试。

收稿日期：2023- 02- 06