Elaboration of the 3d Model and Survey of the Power Lines Using Data From Airborne Laser Scanning

Abstract

One of the methods of obtaining highly accurate and current spatial data about the terrain, as well as objects situated on it, is laser scanning. LIDAR (Light Detection and Ranging) is among the most modern, dynamically developing technologies and reveals in surveying new capabilities that have been unachievable in a traditional way so far. The aim of the publication is to show the possibilities of using data from airborne laser scanning to perform the survey and visualization of the energy network, and also identification of hazards which the present network constitutes for the immediate environment using the TerraSolid software package. The survey was conducted for two independent sections of the power line, on the basis of two different clouds of points obtained from the airborne laser scanning. The first one had a density of 16 points/m 2 , while the other 22 pts/m 2. The project was created in an environment of MicroStation V8i software using special overlays-TerraScan and TerraModeler of Finnish TerraSolid Company. The use of the test clouds of different densities was intended to indicate an optimal density of the cloud of points, which allows carrying out a survey and visualization of the energy network based on data derived from airborne laser scanning. The publication presents on particular examples the procedure of vectorization and visualization of the power line and detection of objects within a dangerous distance from it. The possibility of using applied LIDAR data, meeting the industry requirements, to the survey of power lines has been also confirmed.

Analysis of power lines span geometry based on TLS measurements

“…Those point clouds have to be reprocessed in order to calculate geometrical elements of a measured object. Certain operations have to be performed to extract measured points of measured object from a point cloud and afterwards calculate object's geometrical elements [13][14][15][16][17][18][19].…”

A Heuristic Method for Power Pylon Reconstruction from Airborne LiDAR Data

“…In addition, a decomposition method only using the density feature is not feasible for some complex pylons. Kwoczyńska and Dobek [7] introduced a semiautomatic pylon modeling function on the MicroStation V8i software using special overlays -TerraScan and TerraModeler of Finnish Terrasolid Company, in which extremely simplified pylon templates were used, thus the reconstructed models cannot accurately describe the structure of the original power pylon. To fully automate the pylon reconstruction workflow, Guo et al [2] introduced a stochastic geometric method to reconstruct power pylons, in which the type of the pylon and all the parameters of the pylon body and pylon head were solved together by a Reversible Jump Markov Chain Monte Carlo (RJMCMC) sampler with a simulated annealing algorithm.…”

Determination of Terrain Profile from TLS Data by Applying Msplit Estimation

“…Depending on the type of platform, there is airborne laser scanning (ALS), terrestrial laser scanning (TLS), satellite laser scanning (SLS) and mobile laser scanning (MLS) [1,2]. All types of laser scanning have a wide range of applications, e.g., terrain surface and vegetation cover measurements and digital terrain model (DTM) generation [3][4][5][6][7], building detection and their condition diagnosis [8][9][10][11][12], displacement detection [13][14][15], modeling of cultural heritage sites or object structures [2,13,16], registration roads, railways or power lines [17,18], monitoring coastal zones [19], mining damages and ground disasters [20,21].…”