Power transmission line tower line segment matching method and equipment

Abstract

The invention discloses a power transmission line tower line segment matching method and equipment. The method comprises the following steps: extracting a line segment from a tower region in a power transmission line tower image; performing conditional constraint on intersection points among the line segments to obtain original intersection points, clustering the original intersection points to obtain new intersection points, matching the line segments corresponding to the new intersection points based on a plane optimization and coplanar cost method, and selecting matching points of the new intersection points and matching line segments corresponding to the new intersection points; selecting the main planes from the planes by fitting the planes where the line segments are located, findingthe three-dimensional coordinates of other main planes meeting the approximately collinear condition according to the three-dimensional coordinates in the main planes, and therefore the three-dimensional line segments matched with the electric power tower are obtained. According to the method, a plurality of useless intersection points of the line segments are eliminated through a plane optimization and coplanar cost method, and finally, the three-dimensional line segment matching of the power tower is performed according to an approximate collinear condition, so that the line segment matching of the three-dimensional image of the power tower is realized in a large number of intersected line segments.

Description

technical field [0001] The invention relates to the field of line segment matching, in particular to a line segment matching method and equipment for transmission line poles and towers. Background technique [0002] With the rapid development of information technology, 3D reconstruction has more and more applications in many fields, such as cultural heritage protection, cultural relics research, video surveillance, animation film production, medical image processing and virtual reality. In computer vision, image-based 3D reconstruction technology is the process of automatically calculating and matching the 2D geometric information and depth information of the scene based on two or more 2D images of the scene, and finally building a 3D model. Traditional 3D reconstruction is based on point feature extraction and matching. The 3D point cloud model has poor reconstruction accuracy in places lacking texture. The 3D line segment model can provide more sufficient structural inform...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method and equipment for line segment matching of transmission line poles and towers, which are used to solve the technical problem in the prior art that there is no method for line segment matching for three-dimensional images of power poles and towers

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