The invention relates to the technical field of power line three-
dimensional modeling, and discloses a three-dimensional
reconstruction method and device for missing power line
point cloud data, and the method comprises the steps: collecting power line three-dimensional
point cloud to obtain
original data, carrying out voxelization sampling and ground point recognition, obtaining power line target points, carrying out the fitting, generating a basic three-dimensional
catenary model, and carrying out the interior point supplementation; obtaining an initial power line three-dimensional model; repeatedly calculating a set number of times to obtain a plurality of initial power line three-dimensional models, and selecting the power
line model with the maximum number of inner points as a target power
line model; calculating a
feature vector by taking all inner points as a whole, and if a preset threshold requirement is met, determining that the model is an
effective power line model; and calculating a cross section model of the power line, and integrating the cross section model with the target power line model to obtain a three-dimensional
catenary model. According to the method,
accurate segmentation and reconstruction of the power line
point cloud data are realized, the power line extraction precision and efficiency can be greatly improved, especially the extraction and reconstruction precision of the broken power line point
cloud data is improved, and the modeling authenticity is improved.