POWER LINE EXTRACTION USING EIGENVALUES RATIO OF 3D RAW DATA OF LASER RADAR

摘要

The present invention provides a method for extracting position information of a power line using an eigenvalue ratio, including the steps of: acquiring three dimensional point cloud raw data using a laser radar in the air; separating ground points and non-ground points from the raw data using an adaptive triangulated irregular network (Adaptive TIN) algorithm; separating a surface and a non-surface by generating a continuous surface patch by grouping irregularly distributed points in a three dimensional space among the non-ground points; and extracting power line candidate points by comparing a threshold ratio with an eigenvalue ratio by calculating a covariance matrix of non-divided points which are classified as non-ground points.