2010 LiDAR Collection in West Virginia’s Coal Fields WVAGP Meeting December 7, 2010
Mar 19, 2016
2010 LiDAR Collection in West Virginia’s Coal Fields
WVAGP MeetingDecember 7, 2010
LiDAR collection specifications• Horizontal postings: 1 meter• Vertical accuracy: 15 centimeters• Additional derived data products
include:– ESRI elevation grid– Hillshade– 2 foot contours used in AML program– Intensity image useful in QCing LiDAR data
• ~ 2 TB of data before derived products
Slide 2
Initially Contracted LiDAR AoI
Slide 3
AoI polygons are watershed rather than county-based.
Initial AoI encompassed
about 5,000,000
acres or about 33% of the
State
Project Status as of Nov. 29, 2010
Slide 4
1,322,454 acres
1,162,728 acres
1,162,728 acres
Highest priority area of the state was about 3,000,00 acres. 2,485,182 acres
have been completed collected.
A
B
Built an ICI (=isolated computing island)• Isolated three VERY high performance
computers from central IT C&C during VERY long compute jobs:– No pushes of server OS upgrades– … followed by the requisite reboots– Isolated from any network dependence for
software licenses network outages
– Enough local storage and bandwidth to create more than 8 TB of local storage and a peer-to-peer within-the-room network
– UPS on each PC still working on this.
Slide 5
QCing LiDAR & LiDAR software
Slide 6
• QCing LiDAR deliverables– 2003 Statewide GCPs file– Multiple LiDAR datasets that overlap
difference grid calculation– Trimble R8 GNSS receivers – Outsource via FEMA monies a go too
• Software 64 bit, use multicores– Virtual Geomatics 2 floating seats– Applied Imagery’s Quick Terrain Modeler
1 seat Approval of software purchase still pending 10 months after start of the project … no end in site!!!
Two Shorted URISA LiDAR Workshop Topics
Slide 7
• Wide area vs. corridor LiDAR• Use of LiDAR intensity data as a
substitute for aerial photography– LAS Version 1.1 (… dates back to 1.0)
LiDAR Intensity Image
Slide 8
Produced from spring 2009 flight contracted by the Cabell County
Assessor’s Office two whole LiDAR tiles
LiDAR Intensity Image
Slide 9
Produced from spring 2009 flight contracted by the Cabell County
Assessor’s Office two whole LiDAR tiles
Zoom in from here
LiDAR News Headlines …• The good
– WVDEP has some more funding for additional LiDAR data deliverables
• The bad– About 50% of our initial AoI remains
uncollected 17% of West Virginia
• The ugly– WVU’s existing LiDAR hardware and
software is supported by Optech for only 1 more year.
Slide 10
The end
Slide 11
If we don’t take a shot at partnering more effectively
…
… future opportunities may be lost