Embed Size (px)
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.
Citation preview
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
Laserdata GmbH
Frederic Petrini-Monteferri
Technikerstr. 21a
6020 Innsbruck
Tel: ++43 (0)512 507 4866
Fax: ++43 (0)512 507 4869
Internet: www.laserdata.at
Email: [email protected]
Contact
