Transcript Update on the OpenTopography Facility Chris Crosby (SDSC @ UCSD) & Ramon Arrowsmith (ASU) Lidar2 Workshop: New Tools in Process-Based Analysis of.

Update on the OpenTopography Facility
Chris Crosby (SDSC @ UCSD) & Ramon Arrowsmith (ASU)
Lidar2 Workshop: New Tools in Process-Based Analysis of Lidar Topographic Data
June 2nd, 2010
EarthScope LiDAR Project
The Challenge of
Community LiDAR data
• LiDAR acquisition over
5600+ km2 = 50+ billion
LiDAR returns!
• Thousands of DEMs as
“standard” products
• Large user community
with variable needs and
levels of sophistication.
Northern California
GeoEarthScope
LiDAR
How do we deliver large
community data sets
such as these?
What tools are necessary?
Tiered Data Access:
• Large and diverse user community
requires range of data products.
• Pretty picture for synoptic data
browsing and education.
– Google Earth
• Vast majority of earth science users
want a standard gridded product:
– Optimized DEM
• Most computationally and resource
intensive data (point cloud) are
currently the least often accessed.
– Access to “raw” data to optimize terrain
representation.
• NSF Facility: 3 year support (funding via EAR IF and OCI)
• Increase the amount of Earth science-oriented LiDAR
available via OpenTopography (Discussion Point #1)
• Enhanced web-based processing capabilities, with a
focus on computationally intensive tasks
• Community support: (Discussion Point #2)
– Software
– Tutorials and short courses
– Education and outreach materials
OpenTopography as portal
Cloud, waveform
CSDMS
Community
Support
http://www.opentopography.org/kml
http://www.opentopography.org/dems
http://www.opentopography.org/pointcloud
Cyberinfrastructure in Action
Available Data:
•
60 billion LiDAR
returns +
thousands of 1
km2 DEM tiles
available
•
~7500 sq km of
data
•
~50 GB of
hillshade imagery
accessible in
Google Earth.
http://opentopography.org/data
Logging Data Usage
Usage stats:
- Help to optimize system
design
- Are very compelling to
funding agencies and program
managers
Building a community of users: social networking
Blog:
- News
- Announcements
- Processing and
data analysis tips
- Data sources
Forums:
- Encourage
discussion
between users
- Share
knowledge, tips,
tricks
Social Media:
Discussion #1: Community (data analysis) tool
repository
• Centralized and current access to community/PI
developed software
– Evolution of repository?
• html, wiki, cvs / svn / “OTforge”
• Sub-community sandbox
• Community demand-driven deployment in OT production
Ex: Community Surface Dynamics Modeling System
(CSDMS) Wiki (http://csdms.colorado.edu/wiki/Terrestrial_Mo)
Ex: Community Surface Dynamics Modeling System
(CSDMS) Wiki (http://csdms.colorado.edu/wiki/Terrestrial_Mo)
Discussion #2: OpenTopography Data Priorities?
• Type?
– Grids?
– Points?
– Other sources: TLS, total station, bathy, etc.
• Quality Threshold?
– Research Grade
• Shots/m2
• Metadata / documentation?
• Domain-driven?
– Data relevant to EAR research regardless of source
• Low-hanging fruit?
Questions & Comments:
[email protected]