This paper proposes a method of Pipeline 3D reconstruction based on line structured light in view of low detection efficiency and the assembly quality not guaranteed in the process of pipeline assembly.The method can be used to obtain the 3D profile data of the pipeline surfaces based on line structured light scanning technique,and extract the ridge line and the radius of the pipeline by using the 3D point cloud data.According to the discrete ridge coordinates,the NURBS algorithm is adopted to fit it,and the 3D model is reconstructed by using the line ridge and radius.The structured light scanning system is used to obtain point cloud data of Pipeline contour and reconstruct pipeline 3D model.The experimental results show that the proposed method and the measuring system can realize the rapid reconstruction of three-dimensional reconstruction of the pipeline,and the reconstruction data can be used to measure the gap.%针对航空发动机管路装配过程中,装配质量难以保证、检测效率低的问题,提出一种基于线结构光的管路三维重建测量方法.该方法通过线结构光扫描技术,获取管路表面三维轮廓数据,利用三维点云数据提取管路脊线和半径值.针对离散的脊线坐标值,采取NURBS算法对其拟合,利用管路脊线和半径值重建管路三维模型.通过线结构光扫描测量系统,获取管路轮廓点云数据,重构管路三维模型.实验结果证明,该方法和测量系统可以实现管路三维的快速重建,重建数据可用于管路间隙测量.
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