Algorithm for positioning accurate mountain fire and calculating vertical distance between mountain fire edge and overhead transmission line

Abstract

The invention discloses an algorithm for positioning the accurate mountain fire and calculating a vertical distance between a mountain fire edge and an overhead transmission line. After the mountain fire is discovered through a camera, a planar two-dimensional coordinate system o-xy, an image space rectangular coordinate system S-xyz, a ground photography coordinate system O-XYZ and an image spaceauxiliary coordinate system S-XYZ are constructed based on the photogrammetry principle, p is an image point, P is a fire point, S is the origin of the camera photographic center, and o is the originof the image center; three-dimensional attitude angles during image shooting are measured through utilizing a three-dimensional electronic compass fixedly mounted on the camera in real time, including the azimuth angle (phi), tehe inclination angle (omega) and the roll angle (kappa); through image point space coordinate transformation, a collinear conditional equation satisfying the image point p, the fire point P and the origin S of the camera photographic center is constructed, and the equal-division search method is utilized to acquire the three-dimensional coordinate of the fire point.

Description

technical field [0001] The invention relates to an algorithm for the location of wildfires, in particular to an algorithm for the precise positioning of wildfires and the vertical distance from the edge of wildfires to overhead transmission lines. Background technique [0002] Overhead transmission lines are mainly operated in the wild and are greatly affected by the environment. In particular, accidents caused by mountain fires near overhead transmission lines have occurred frequently. Traditional mountain fire monitoring mainly uses visible light video or infrared thermal imaging technology. Since visible light video cannot Calculating the precise positioning of wildfires and the vertical distance from the edge of wildfires to overhead transmission lines cannot meet the requirements for early warning of wildfires on overhead transmission lines; infrared thermal imaging technology can achieve precise positioning of wildfires, but it is expensive and cannot achieve the edge o...

AI Technical Summary

Problems solved by technology

[0002] Overhead transmission lines are mainly operated in the wild and are greatly affected by the environment. In particular, accidents caused by mountain fires near overhead transmission lines have occurred frequently. Traditional mountain fire monitoring mainly uses visible light video or infrared thermal imaging technology. Since visible light video cannot Calculating the precise positioning of wildfires and the vertical distance from the edge of wildfires to overhead transmission lines cannot meet the requirements for early warning of wildfires on overhead transmission lines; infrared thermal imaging technology can achieve precise positioning of wildfires, but it is expensive and cannot achieve the edge of wildfires Calculate the vertical distance from the overhead transmission line

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