ArcGIS 10.1 Lidar Workshop - kampro.orgkampro.org/2013_conf_presentations/workshop9-LidarWorkshop...
Transcript of ArcGIS 10.1 Lidar Workshop - kampro.orgkampro.org/2013_conf_presentations/workshop9-LidarWorkshop...
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ArcGIS 10.1 Lidar Workshop
Introduction to Lidar
Gregory Brunner
Esri Professional Services
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Workshop Agenda
Afternoon
• 1:00pm Introductions
• 1:15pm Introduction to Lidar
• 1:45pm LAS datasets
• 2:00pm Exercise 1
• 2:45pm – 3:00pm Break
• 3:00pm Mosaic Datasets
• 3:15pm Exercise 2 (Exercise #3 in the manual)
• 4:15pm Lidar and cloud publishing/serving
• 4:30pm Exercise 3 - Accessing Lidar data with web services
• 5:00pm Wrap up and questions
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Introduction to Lidar and ArcGIS
• Fundamentals of Lidar
• Challenges and user expectations
• Review existing lidar support
• ArcGIS 10.1 lidar solutions
• GIS Lidar applications
• Future possibilities
• Q&A
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Lidar – Light Detection And Ranging
• Optical remote sensing technology that can measure the
distance to, or other properties of a target by illuminating
the target with light
• LAS—Binary file format for Lidar storage developed by
the ASPRS in conjunction with private and government
stakeholders
• Lidar data (LAS) is increasingly available and affordable,
and many users want to leverage this data in their GIS
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LiDAR – Light Detection And Ranging
Optical remote sensing technology that measures the
distance from the sensor to a target
LAS: Binary file format for LiDAR data storage developed by
the ASPRS in conjunction with private and government
stakeholders
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LiDAR – Light Detection And Ranging
• Laser based
• High Density, High Accuracy
• Partially penetrates canopy
• Include classification
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Types of LiDAR
• Airborne
- Captured from aircraft
• Terrestrial and Mobile
- Captured from the surface
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LiDAR Technology
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Lidar Data
Very rich, but contains a lot of data not required for many applications
First Return
SecondReturn
ThirdReturn
Last Return
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Lidar Data
Very rich, but contains a lot of data not required for many applications
First Return
SecondReturn
ThirdReturn
Last Return
DSM
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Lidar Data
Very rich, but contains a lot of data not required for many applications
First Return
SecondReturn
ThirdReturn
Last Return
DSM
DTM
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Lidar Data
Very rich
First Return
SecondReturn
ThirdReturn
Last Return
DSM
DTM
Breakline
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Lidar Industry Usage
Just to name a few
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Lidar Users
• Users
- States, counties, cities, government agencies
- Military
- Forestry, water resources, urban management
- More…
• User Roles
- Data managers
- Interested in managing large collections of LAS files
- Data consumers
- Interested in tools to analyze LAS
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Key Lidar Functionality
• Surface analysis
- First-return
- Bare-earth
• Feature extraction
- Digitizing
- Point classification
• Background information
- Measuring
- Data validation
• Sharing
- Serving
- Zip-and-ship
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Challenges of Working with Lidar Data
• Huge Volumes
• Multiple Sources
• Multiple Projections
• Varying Accuracy
• Multiple Representations
• How to manage?
• How to analyze?
• How to access?
Use of elevation data has been a challenge
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Traditional Workflows
• Project based
- Collection – Project based
- Analysis – For specific project
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Traditional Workflows
• Project based
- Collection – Project based
- Analysis – For specific project
- Archive data
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Traditional Workflows
• Project based
- Collection – Project based
- Analysis – For specific project
- Archive data
- Move on to next project
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Traditional Workflows
• Project based
- Collection – Project based
- Analysis – For specific project
- Archive data
- Move on to next project
• Data not accessible to
- Multiple applications
- Multiple users
• Value is lost
?
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User Expectations
End Users and Decision Makers
• Lidar lives beyond project
• Information has to be:
- Simple
- Accessible
- Timely
Application and data integration is critical
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User Expectations: Simple
End Users and Decision Makers
• Single interface
• Zoom/Roam/Search
• Visualize data
• Perform analysis
• Discover relevant information
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User Expectations: Accessible
End Users and Decision Makers
• Accessible with other data
• Imagery
• Base Maps
• Operational Layers
• Internally within your
organizations and online
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User Expectations: Timely
End Users and Decision Makers
ArcGIS enables timeliness by
• Using server based on-the-fly processing
• Automated analysis and geoprocessing
• 2D and 3D visualization
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The Lidar Workflow
Collect
and Integrate
Manage
Visualize and
Analyze
Share
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Overview of LAS Support in ArcGIS 10.1
File01.las
File02.las
…
File99.las
Multiple Files
/ Folders Tiled / Overlapping
Extents
(Location / Time)
P
R
O
J
E
C
T
S
O
R
G
A
N
I
Z
E
Analyze /
Update Data
Manage
Serve / Share
Mosaic Dataset
LAS Dataset
1
LAS Dataset
2
LAS Dataset
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Mosaic Dataset
Optimum Model for Image Data Management
• Manage
• Multiple projects as single dataset
• Metadata
• Visualize
• On the fly representation as surface or point cloud
• View as 2D or 3D
• Share
• As a single dataset
• As Image Service
• WMS/WCS
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Sharing Lidar Data
• Share via ArcGIS Server
• An image service
- Access
- Discover
- Download
• A map service
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GIS LiDAR Data Applications
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See the forest AND the trees
Natural Resource Management - Forestry
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Slope Map
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Canopy Height Map
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• True 3D Data
NADIR or Down Looking Perspective
Energy – Transmission Lines
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• Great detail
• Highly accurate
Data courtesy of Optech, Inc.
Energy – Transmission Lines
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Emergency management
• North Carolina Geospatial & Technology Information
Management Office (GTM)
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Statewide Building Footprints
• 100% Statewide Coverage
• 5.5 Million Building Footprints Collected and Quality Reviewed
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Building Footprints and Finished Floor Elevations
100YR Flood Elevation = 13 ft.
FFE = 5.2 ft.
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Damage assesments
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Empowering the GIS Professional . . .
. . . And the Broader Community
A New Vision Is Emerging for LiDAR/Imagery with GIS
Easier, Accessible and Collaborative
Enabled By
• Cloud Architecture
• Web Services
• Information Integration
• Crowd Sourcing
• Open Data Sharing
• On the fly processing
• One environment
• 2D/3D visualization
• Spatial Data Infrastructure
. . . . And Software
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Documentation
• New LAS dataset book in the Help
• Available on the 3D ArcGIS resource center
- http://resourcesbeta.arcgis.com/en/communities/3d