摘要
针对锥形管在多样化应用领域中内壁产生形变的检测问题,提出一种基于图像分析的锥形管内壁形变检测方法,旨在实现对锥形管内壁2 mm及以上形变量的定量分析,并实现产生形变的圆周方位的定性分析。该方法首先通过在锥形管内安装CMOS图像采集模块对锥形管内的预置圆环线图像进行采集;然后对图像进行处理分析,通过最小外接圆定位圆环线的位置信息,改进的Canny边缘检测算法提取圆环线边缘信息,并对圆环线中心特征数据进行提取分析产生的形变量与形变位置;最后根据像素空间与锥形管内壁空间的坐标关系将分析结果进行变换。该方法具有可视化程度较高以及定位精度高等特点。实验结果表明:基于图像分析的锥形管内壁形变检测方法对边缘提取综合效果更好,对内壁形变的有效识别能够达到2.05 mm及以上,且相对误差在0.15 mm以内,对内壁产生形变区域的定位精度达到0.01°,能满足对锥形管在不同应用场景中产生的形变进行定性定量分析的需求。
Aiming at the detection problem of deformation on the inner surface of conical tubes in diversified application fields,a deformation detection method for conical tubes based on image analysis is proposed.The aim is to achieve quantitative analysis of deformation variables on the inner surface of conical tubes of 2 mm and above,and qualitative analysis of the circumferential direction of deformation.To this end,a complementary metal-oxide-semiconductor imagecapturing module was first installed within a conical tube to acquire images of predefined circular-ring lines.Subsequently,these images were processed to detect the circular-ring lines using the smallest circumscribing circle,and an enhanced Canny edge detection algorithm was employed to extract edge details.Furthermore,feature data from the center of the ring lines were analyzed to ascertain deformation extents and locations.The analysis outcomes were then converted based on the relationship between the pixel space and spatial coordinates of the inner surface of the conical tube.Remarkably,this method facilitates high visualization and precise localization accuracies.Experimental results demonstrate that this method offers superior edge extraction,effective identification of deformations exceeding 2.05 mm with a relative error within 0.15 mm,and a localization precision of 0.01°for the deformations.These features satisfy the requisites for both qualitative and quantitative analyses of deformations within conical tubes across diverse application scenarios.
作者
靳极升
马卫红
田会
王凡
Jin Jisheng;Ma Weihong;Tian Hui;Wang Fan(School of Opto-electronic Engineering,Xi’an Technological University,Xi’an 710021,Shaanxi,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2024年第12期167-176,共10页
Laser & Optoelectronics Progress
关键词
变形检测
锥形管内壁
边缘提取
特征信息
坐标空间变换
deformation detection
inner surface of conical tube
edge extraction
characteristic information
coordinate space transformation
