This tutorial describes the usage of the Laserdata Information System LiS. Core applications comprise 3D point cloud visualization and editing, point cloud rasterization and vectorization, profile extraction as well as seamless data access to data stored in a PostgreSQL/PostGIS database and data exchange (LAS/LAZ)
1. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
LiDAR data
Information System
Training material
Dipl. Geogr. Frederic Petrini-Monteferri
Data Courtesy of:
2. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Data management and analysis
with LIS / SAGA GIS
● SAGA: System for Automated Geoscientific Analyses
● Open Source GIS specialized in digital relief analysis
● developed at the dept. of Physical Geography, University of Hamburg
SAGA User Group Association
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3. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Data management and analysis
with LIS / SAGA GIS
● LIS is implemented in SAGA like an extension
● Development of new LIDAR specific modules
● PostgreSQL / PostGIS data base connection
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14. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Point Cloud Editor: Measure Distances
Shurtcut M
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15. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Point Cloud Editor: Measure Distances
Shurtcut M
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16. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Point Cloud Editor
Functionality reclassify points
after
reclassification
before
reclassification
after
reclassification
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17. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Point Cloud Editor
Delete Points
before deleting after deleting
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18. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Create Ground Grid via Module Point Cloud
to Grid (TIN) and Attach DZ to Point Cloud
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19. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Execute Module and Define Output
Grid Resolution
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Create Ground Grid via Module Point Cloud
to Grid (TIN) and Attach DZ to Point Cloud
20. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Resulting
Ground Grid
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Create Ground Grid via Module Point Cloud
to Grid (TIN) and Attach DZ to Point Cloud
21. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
21
Create Ground Grid via Module Point Cloud
to Grid (TIN) and Attach DZ to Point Cloud
Resulting DZ Attribute of
Point Cloud with height
of buildings and trees
22. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Create Digital Surface Model:
Point Cloud to Grid
Execute Module and select the
existing Grid System of ground grid
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23. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Create Digital Surface Model:
Point Cloud to Grid
Result: 0.5m Grid
Digital Surface Model
with gaps
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24. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Create Digital Surface Model:
Close Gaps
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25. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Create Digital Surface Model:
Close Gaps
Result: 0.5m Grid
Digital Surface Model
without gaps is
visualised in a new
map
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26. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Digital Surface Model
Rename Grid to DSM
Rename Grid, Press Enter
and the Apply Botton
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27. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Create Analytical Hillshading
of the Digital Surface Model
Rename Grid Analytical Hillshading to
Analytical Hillshading DSM
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28. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Save Project
Select all modified data sets and save them
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29. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Extract Vegetation Points:
Point Cloud Subset Extractor
LAS class numbers
4: medium vegetation
5: high vegetation
Rename Result to
6121_c_Cut_dz_vegetation
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30. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Create Vegetation Raster Layer with tree height
Point Cloud to Grid
Rename Result to Aggregate_dz_max_vegetation
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31. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
31
Create Vegetation Raster Layer with tree height
Point Cloud to Grid
36. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Extract Building Points:
Point Cloud Subset Extractor
LAS class number
6: building
Rename Result to
6121_c_Cut_dz_buildings
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37. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
37
Extract Building Points:
Point Cloud Subset Extractor
38. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Create Building Raster Layer
Point Cloud to Grid
Rename Result to Aggregate_dz_max_buildings
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39. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Create Building Raster Layer
Point Cloud to Grid
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40. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Close Gaps in Buildings
Morphological Filter
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41. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Close Gaps in Buildings
Morphological Filter
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47. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
LiDAR Points Profile [interactive]
from Database
Query Builder Point Projects
Query Builder Attributes Echo
Press Execute to Start the Module
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48. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Use the Action-Tool to draw the
profile line in the map. Start
digitizing with the left mouse
button, stop digitizing with the
right mouse button.
The resulting point
cloud is visualised
in the map view.
zoom
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LiDAR Points Profile [interactive]
from Database
49. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Stopping [interactive] Modules
Stop interactive
modules by
deselecting them in
the Geoprocessing
menu
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50. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
View Table of Profile Points (Shapefile)
Select the point shapefile and
use the right mouse button to
navigate to Attributes > Show
Table: original point location within profile
swath width, id-class attribute, projected
points to the profile line, profile length,
displacement to the profile line
(maximum half of the swath width)
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51. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
View Profile Diagram (Shapefile)
Select the point shapefile and
use the right mouse button to
navigate to Attributes > Diagram
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53. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
View Profile of Point Cloud
via Point Cloud Editor
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54. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
View Profile of Point Cloud
via Point Cloud Editor
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55. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
View Profile of Point Cloud
via Point Cloud Editor
Select a subset in the Extent Window
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57. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Export LIDAR Points [interactive]
seamless from Database
Query Builder Point Projects
Query Builder Attributes Echo
Press Execute to Start the Module
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58. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Use the Action-Tool to drag a box
in the map with the left mouse
button.
The resulting point
cloud is visualised
in the map view.
zoom
58
Export LIDAR Points [interactive]
seamless from Database
59. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Stopping [interactive] Modules
Stop interactive
modules by
deselecting them in
the Geoprocessing
menu
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60. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
60
Data exchange: Exporting SAGA Point Cloud
to LAS (Standard Format for LiDAR data)
61. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
61
Data exchange: Importing LAS Format
using LAS/LAZ Info
62. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
62
Data Exchange: Importing LAS Format
using LAS/LAZ Info
63. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
63
Data exchange: Importing LAS Format
to SAGA Point Cloud
64. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
64
Export LIDAR Points to Grid [interactive]
seamless from Database
65. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Query Builder Point Projects
Query Builder Conditions Echoes
Use only point classes 0 to 11 - meaning:
undefined, ground, 3 vegetation classes,
building, powerlines and pylons, road
surfaces (motorway)
Press Execute to Start the Module
65
Export LIDAR Points to Grid [interactive]
seamless from Database
66. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Use the Action-Tool to drag a box
in the map with the left mouse
button.
The resulting Grid is visualised in
the map view.
zoom
66
Export LIDAR Points to Grid [interactive]
from Database
Define Grid resolution
67. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
Stopping [interactive] Modules
Stop interactive
modules by
deselecting them in
the Geoprocessing
menu
67
68. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
68
Data exchange: Exporting SAGA Grid
to ESRI Arc/Info Grid
69. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
69
Data exchange: Import ESRI Arc/Info Grid
to SAGA Grid
70. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
70
Data exchange: Exporting SAGA Grid
to GeoTIFF
71. LASERDATA GmbH ∙ Management und Analyse von Laserscanning-Daten
Technikerstrasse 21a ∙ A-6020 Innsbruck ∙ Tel: +43-(0)512-507 48 66
Fax: +43-(0)512-507 48 69 ∙ E-mail: office@laserdata.at ∙ www.laserdata.at
71
Data exchange: Importing GeoTIFF
to SAGA Grid