3D Data Collection, Modelling and Visualization

LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
3D Data Collection, Modelling and Visualization
• General remarks
Technologies
(LIDAR .. Light Detection and Ranging )
already scanned area
• 3D - data collection
• Data processing / modelling
• Visualization
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Technologies
Technologies
GPS
Flight Planning - Example
Z
Flight Paths
Y
X
X
LASER
Y
Z
d
Adjacent strips in opposite
directions with overlap.
INS
At least one strip across the
others.
GPS .. Sensor position
INS .. Sensor/Laser orientation
delta t .. Distance d
Turn at a roll angle less than 15 deg to avoid
GPS disruption. Each turn takes 4 to 5 minutes.
GPS reference station at a
distance less than 30 km.
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
Survey aircraft, two engines:
about 8 strips per hour (about 10 km²).
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Technologies
Flight Planning
Technologies
Flight altitude is oriented at the
lowest elevation and the sensor‘s
range
Swiving
mirror
Rotating
prisma
terrain
swath width
covered swath
Strip separation depends on
smallest strip width.
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Technologies
Nutation mirror
(Palmer Scan)
Technologies
Fiber Scanner
First und last Puls
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Technologies
Technologies
ALS 40 Airborn Lase
Scanner
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Technologies
Technologies
•
•
•
–
–
–
–
–
ALS 50 Airborn Lase
Scanner
•
–
–
–
–
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
Toposys Falcon II (III)
Used by TopoSys since 2000 for precise
Lidar scanning basically in Europe
Available to the global market since 2004
Parameters
Fiber Scanner 128 fibres
Measurement rate 83 kHz (125 kHz)
14 degree viewing angle
Max. altitude 1600m
30 to 3 points / sqm
Improvements until 2005
Echo separation 1.2 m
Distance measurement accuracy
1.95 cm
RGB/NIR Line scanner
Roll angle compensation
Dr.-Ing. Achim Hellmeier
Sensor
Rack
Computer Rack
Operator
Console
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Technologies
Technologies
TopoSys Falcon II
Fiber Scanner
Sensor
TopoSys Falcon II
Fiber Scanner
Laserpuls
Scan Pattern - Swing Mode
Höhenprofil
Referenzebene
Faser 1
Faser
n/
2
Dr.-Ing. Achim Hellmeier
Faser n
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Technologies
Technologies
System Architecture Harrier 56
Laser scanner
system
TopoSys Falcon II
Mounted in
Piper Seneca
TopPIT
Processing Software
& archiving
Data
recording
laser,
scanning device,
optics, electronics
LINUX workstations
Navigation
system
coverage control,
GPS/INS processing
DSM & DTM proc.,
quality assurance
Operator Panel
PCs and
peripheral equip.,
time sync.,
I/F-software
GPS
IMU
GPS
reference station
UPS
Frame Camera
28 VDC, 20 A
Flight
segment
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
Ground
segment
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Technologies
Polygon Scanner Harrier 56
Technologies
Workflow
Rotating Mirror
• Keeps mechanics at a
minimum
• Rotation reduces
mechanical wear out and
stress
• High accuracy and high
reliability
• High long term stability
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Examples
3D City Models
Examples - 3D City Modells
Hydrologic Investigations
Forest
Lasermodell
Stadt Mannheim, Germany
Power Lines,
Corridor Mapping
Dr.-Ing. Achim Hellmeier
True-Ortho Images
RolleiMetric GmbH Germany
Mining
1 m raster DSM,
area about 1 km²
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Examples - 3D City Modells
Examples - 3D City Modells
Hamburg harbour,
Germany
1 m raster DSM
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Examples - 3D City Modells
Examples - 3D City Modells
Karlsruhe
DSM
DHM
Airport of Lisbon,
Portugal
1 m raster DSM,
area about 1 km²
0,5 m - Raster
© Edinfor
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Examples - 3D City Modells
Examples - 3D City Modells
„Topographic“
LIDAR
„Precise“ LIDAR
High resolution DTM
and DSM
apprx. 8 points/m²
Points per m2
1
LOD
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
4-5
1 (2)
8 - 10
2 (3)
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Examples - 3D City Modells
Examples - 3D City Modells
Area A .. Complete Area
CAD-conform reconstruction of buildings
DSM
DTM
3D raster model
RGB True Ortho CIR
Area B .. Extended Area
Additional ..
3D volume model .. By .elevation,
based on
ALK/cadastral
Additional ..
Roof shapes ..
Area C .. Core Area
Wire frame Model
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
CAD- (Surface-) Model
Photo-realistic
Presentation
and Texture
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Examples - Hydrologic Investigations
Examples - Hydrologic Investigations
Nahe River, Germany
DSM
Volume Calculation
DTM
Flood control reservoir in 3D
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
Volume diagram
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Examples - Hydrologic Investigations
Examples - Hydrologic Investigations
Coast Protection - Coast line of Island Sylt
© Amt f.Ländl. Räume,Husum
Island Sylt, North Sea
© Amt für ländliche Räume
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
© Amt für ländliche Räume
LIDAR: Sensors and Applications, INPE 21st of April 2007
Monitoring of erosion of cliffs
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
Examples - Hydrologic Investigations
ƒ 3D Data collection
Laserscanning - LIDAR
Island Sylt, North Sea
Monitoring of erosion of cliffs
EXAMPELS
Superimposition of GIS data
2000 - 2002
2000
2002
Dr.-Ing. Achim Hellmeier
City of Ravensburg, Germany
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Examples - Power Line Mapping
Examples - Power Line Mapping
GPS
1
2
Video
RGBScanner
1
2
Laser
sensor equipment for helicopter power line mapping
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
DSM of high precission power line mapping with an unparalleled laser pulse rate of 200,000
Pulses per second and full wave form digitization and results in a never seen before data
quality and point density (Harrier 56/G3/Toposys, Germany)
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
3D Data Aquisition, Modelling and Visualization, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Examples - Power Line Mapping
Examples - Power Line Mapping
Import of LIDAR
raw data;
quality control
(IHCM-Consortium)
3D view of a point cloud in the line corridor
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
© TopoSys, Germany
RolleiMetric GmbH Germany
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
LIDAR: Sensors and Applications, INPE 21st of April 2007
ƒ 3D Data Collection - Laserscanning (LIDAR)
ƒ 3D Data Collection - Laserscanning (LIDAR)
Examples - Power Line Mapping
Examples - Power Line Mapping
(ArcView evaluation,
IHCM-Consortium)
DSM relief presentation and cadrastral map
(IHCM-Consortium)
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
Results of interactive
object mapping
www.rolleimetric.com
LIDAR: Sensors and Applications, INPE 21st of April 2007
Next topic:
3D Modelling and visualization
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com
Dr.-Ing. Achim Hellmeier
RolleiMetric GmbH Germany
www.rolleimetric.com