pylon analysis of lidar data with laserdata lis
DESCRIPTION
This tutorial describes the analysis of Electricity Pylons in LiDAR point clouds with Laserdata LiS. The processing steps comprise point feature calculation (eigenvalues; horizontal, vertical and boundary angle; standard deviation to local plane), point subset extraction and orthoimage generation from point clouds.TRANSCRIPT
1 1
Pylon Analysis of Terrestrial
Laserscanning Data with Laserdata LIS
2 2
Calculation of Eigenvalues: Eigenvalue 1
3 3
Calculation of Eigenvalues: Eigenvalue 2
4 4
Calculation of Eigenvalues: Eigenvalue 3
5 5
Calculation of Vertical Angle
6 6
Threshold Vertical Angle > 80
7 7
Calculation of Horizontal Angle
8 8
Calculation of Boundary Angle:
Red = Boundary Points, Blue = Points with Neighbors
9 9
Extraction of Pylon and Powerline
Ground and vegetation removal
+
10 10
Subset of Pylon-Points: Vertical Angle > 80
for outer pylon struts
11 11
Detail analysis: Pylon screws and struts
Point Cloud Analysis Module: Standard Deviation to Plane
12 12
Orthoimage of Pylon-Points
Profile line
13 13
Orthoimage of Pylon-Points
14 14
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