Overhead transmission line channel construction vehicle on-site monitoring and distance measuring method

The invention provides an overhead transmission line channel construction vehicle on-site monitoring and distance measuring method, which comprises the following steps: (1) fusing two-dimensional pixel data acquired by an on-site camera and three-dimensional laser point cloud data of a transmission channel, and establishing a unified three-dimensional space coordinate system; (2) calibrating the camera to obtain internal and external parameters of the camera, and determining transformation matrixes of a two-dimensional coordinate system and a three-dimensional coordinate system; (3) identifying and extracting a target lead track in a pixel image acquired by the camera; (4) correcting a target lead track; (5) identifying, extracting and tracking construction vehicles in the pixel map; (6) calculating the position depth information of the construction vehicle to obtain the space position of the construction vehicle; and (7) calculating the space minimum distance between the construction vehicle and the target c