Visual hidden danger distance measurement method based on high-precision three-dimensional model of power transmission line

Abstract

The invention discloses a visual hidden danger distance measurement method based on a high-precision three-dimensional model of a power transmission line, and the method comprises the following steps: obtaining monitoring data of a target region, and scanning the target region to collect point cloud data; preprocessing the point cloud data, including removing redundant point cloud data, removing ground point cloud data and performing density inspection; and determining the position of the hidden danger target and measuring distance. According to the invention, on the premise of not changing the installed online monitoring and shooting device, three-dimensional reconstruction is carried out on the monitoring and shooting system by using the channel three-dimensional point cloud, a relationship between an image and a high-precision three-dimensional space scene is established, accurate calculation and measurement of a hidden danger target are realized, and the false alarm rate is reduced; an external damage hidden danger target is accurately positioned; height calculation and clearance distance calculation; and a hidden danger level and threat degree mechanism, thereby realizing hierarchical management and control of line risks.

Description

technical field [0001] The invention relates to the field of data processing, in particular to a method for visual hidden danger distance measurement based on a high-precision three-dimensional model of a power transmission line. Background technique [0002] At present, in the direction of transmission line image monitoring, the technical solutions adopted for the management and control of hidden dangers outside the line channel are mainly: front-end image monitoring equipment + image AI intelligent recognition algorithm, the construction vehicles, machinery, mountain However, the visualization device can qualitatively identify hidden dangers such as construction vehicles, but cannot perceive information such as the size, orientation, and location of hidden dangers (one surveillance image can only show two-dimensional spatial information , but cannot reflect the three-dimensional space information), cannot calculate its clearance distance to the wire in real time, cannot ac...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low identification accuracy of hidden dangers and narrow range of information perception in the prior art, the present invention provides a visual hidden danger ranging method based on a high-precision 3D model of transmission lines, making full use of the spatial system of 3D laser point cloud data to visualize hidden dangers The two-dimensional target in the monitoring image is mapped to the three-dimensional space, and then the size, direction and distance of the hidden danger can be accurately calculated through the three-dimensional data

Images