A power line extraction and modeling method based on airborne lidar data

Abstract

The invention discloses a power line extracting and modeling method based on airborne LiDAR data. The power line extracting and modeling method includes the steps of (1) LiDAR point cloud data obtaining, wherein the LiDAR point cloud data are obtained through an airborne LiDAR measuring system; (2) power line extracting and modeling, wherein the step (201) of power line extracting includes the substeps that Hough transformation straight line detection is used for detection to obtain a plurality of straight line point sets, single-power-line detection is carried out on all the straight line point sets until all power lines are detected out, and the single-power-line detection process includes least square method straight line fitting and single-power-line point cloud data recognition; the step (202) of power line modeling includes the substeps that with a parabola as a modeling model, the least square method is adopted for curve fitting to obtain a power line model. The power line extracting and modeling method is simple in step, convenient to implement and good in using effect, the extraction precision of the power lines is high, the built power line model is accurate, and the problems that according to an existing power line extracting and modeling method, power line recognition is inaccurate, and requirements for data quality are high can be effectively solved.

Description

technical field [0001] The invention relates to a power line extraction and modeling method, in particular to a power line extraction and modeling method based on airborne LiDAR data. Background technique [0002] Airborne laser radar (LiDAR) is a new type of measurement technology developed around the 1990s. This technology uses active detection methods to quickly obtain high-precision, high-density three-dimensional coordinate information of the earth's surface and ground objects. Based on the high-precision three-dimensional spatial coordinate information contained in the point cloud data, it can accurately express the surface spatial characteristics of the scanned object, which is also of great significance in geospatial information research, urban planning, and land management. [0003] With the continuous maturity of LiDAR technology, its application in power line inspection has gradually become a hot spot in the industry. LiDAR can well solve the problems of spatial ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a power line extraction and modeling method based on airborne LiDAR data in view of the deficiencies in the above-mentioned prior art. , the established power line model is accurate, which can effectively solve the problems of inaccurate power line identification and high data quality requirements existing in existing power line extraction and modeling methods

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