Tank truck weld extraction method based on edge detection

基于边缘检测的槽罐车焊缝提取方法 Tank truck weld extraction method based on edge detection 吴建聪 WU Jiancong 1 first-author 魏昕 WEI Xin 1 corresp 821272495@qq.com 王颢 WANG Hao 1 汪永超 WANG Yongchao 1 2 3 蒙禹舟 MENG Yuzhou 1 广东工业大学机电工程学院 广东工业大学机电工程学院 School of Electromechanical Engineering,Guangdong University of Technology School of Electromechanical Engineering,Guangdong University of Technology 东源广工大现代产业协同创新研究院 东源广工大现代产业协同创新研究院 Synergy Innovation Institute for Modern Industries of GDUT & Dongyuan Synergy Innovation Institute for Modern Industries of GDUT & Dongyuan 河源广工大协同创新研究院 河源广工大协同创新研究院 Synergy Innovation Institute of GDUT & Heyuan Synergy Innovation Institute of GDUT & Heyuan 针对槽罐车内壁焊缝背景影响缺陷分割的问题,提出一种基于边缘检测的方法提取出焊缝区域。对槽罐车内壁图像进行灰度化、高斯滤波去噪等预处理;用Canny算子获取到焊缝的边缘细节,采用一系列形态学处理方法把焊缝边缘连接成一个区域,并用最大面积法去除周围噪声,初步提取到焊缝区域;求焊缝区域的最小外接矩形,将最小外接矩形的四个顶点坐标用到槽罐车焊缝原图像,提取出完整的焊缝区域;采用"旋转法"解决倾斜焊缝的提取问题。 Aiming at the problem that the background of welding seam on the inner wall of tank truck affects the defect segmentation,a method based on edge detection is proposed to extract the welding seam area. Firstly,the image of tank car inner wall is preprocessed by grayscale and Gaussian filtering.Then,Canny operator is used to obtain the edge details of the weld. A series of morphological processing methods are used to connect the edge of the weld into a region. The maximum area method is used to remove the surrounding noise and preliminarily extract the weld area. Then,the minimum outer rectangle of the weld area was obtained,and the four vertex coordinates of the minimum outer rectangle were applied to the original weld image of tank truck to extract the complete weld area. Finally,the "rotary method" is used to solve the extraction problem of inclined weld. 槽罐车 边缘检测 焊缝提取 最小外接矩形 tank truck edge detection weld extraction minimum circumscribed rectangle U469.61;TG441.7 2022-03-08 7 51