hawaii pacific gis conference 2012: lidar for intrastructure and terrian mapping - maximizing the...
DESCRIPTION
TRANSCRIPT
Maximizing the Benefits of LiDAR
with GIS
Presented by Steve Snow
Esri Industry Specialist
Agenda
• What is LiDAR
• Different types of LiDAR systems
• Challenges to working with LiDAR data
• How GIS organizations work with LiDAR
• Example GIS-LiDAR applications
• A New Vision Is Emerging
• Summary/Questions
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
Types of LiDAR
• Airborne
- Captured from aircraft
• Terrestrial and Mobile
- Captured from the surface
LiDAR Technology
LiDAR Data
Very rich, but contains a lot of data not required for many applications
First Return
SecondReturn
ThirdReturn
Last Return
LiDAR Data
Very rich, but contains a lot of data not required for many applications
First Return
SecondReturn
ThirdReturn
Last Return
DSM
LiDAR Data
Very rich, but contains a lot of data not required for many applications
First Return
SecondReturn
ThirdReturn
Last Return
DSM
DTM
Challenges of Working with LiDAR Data
• Huge data volumes
• Storing & serving
• Integration with other spatial data
• How to manage?
• How to access?
• How to analyze?
Traditional Workflows
• Project based:
- Collection – Project based
- Analysis – For specific project
Traditional Workflows
• Project based:
- Collection – Project based
- Analysis – For specific project
- Archive data
Traditional Workflows
• Project based:
- Collection – Project based
- Analysis – For specific project
- Archive data
- Move on to next project
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
?
The Enterprise GIS Lidar Workflow
Collect
and Integrate
Manage
Visualize and
Analyze
Share
LAS Dataset – Visualize and Analyze
Points
LAS Dataset – Visualize and Analyze
Surface
LAS Dataset – Manage
Interactive Editing-manual or batch reclassification of raw LAS files
Data courtesy Merrick & Co.
LAS Dataset – Visualize and Analyze
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
Sharing LiDAR data
• Share via ArcGIS Server
• An Image Service
- Access
- Discover
- Download
• A map service
GIS LiDAR Data Applications
Forestry Tasmania
Lidar provided quality improvements and cost
savings
ArcGIS Image Extension provided the tool to
access large amounts of lidar data seamlessly
and quickly.
Lidar was integrated into harvest planning,
inventory assessment and planning analysis
Lidar is an excellent means for characterizing
the forest resource as a basis for forest
management
Cost saving found areas such as:
haul road location
timber inventory
Result of decrease in measurement and planning
effort
Estimated recoup acquisition and processing
costs in 5 years
See the forest AND the trees
Natural Resource Management - Forestry
Slope Map
Canopy Height Map
Canopy Cover & Flow Direction Map
• True 3D Data
NADIR or Down Looking Perspective
Energy – Transmission Lines
•View,
measure
or
analyze
from any
location
Profile Perspective
Energy – Transmission Lines
• Great detail
• Highly accurate
Data courtesy of Optech, Inc.
Energy – Transmission Lines
Emergency management
• North Carolina Geospatial & Technology Information
Management Office (GTM)
• Tsunami Indundation modeling-Oregon State
(DOGAMI)
Statewide Building Footprints
• 100% Statewide Coverage
• 5.5 Million Building Footprints Collected and Quality Reviewed
Supporting Hurricane Preparations
Building Footprints and Finished Floor Elevations
100YR Flood Elevation = 13 ft.
FFE = 5.2 ft.
Damage assesments
Emergency management
Potential tsunami inundation: Bandon, Oregon
Data courtesy of DOGAMI
Lidar Data dissemination
http://www.oregongeology.org/dogamilidarviewer/
View and download your source data for further uses
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
Learn more
Workshops following conference
Two Free 1 day hands on workshops
• Lidar at ArcGIS 10.1
- Thursday March 8, 8:00AM – 4:30PM
- or
- Friday March 9, 8:00AM – 4:30PM
• Seating is limited. Please contact Connie Clinton at
808-947-0993 x15635 / [email protected]
• Location: Esri training room 1357 Kapiolani Blvd
Suite 1100, Honolulu, HI 96816
Questions
Thank you!
Ron Behrendt
1.406.250.1550
Steve Snow
Esri Industry Specialist
Twitter @lidar_geek
1-909-793-2853 x 3769
http://www.esri.com/industries/map-chart-dataproduction/lidar/