Coal fields Lidar Update (2010)

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WVDEP Coal fields Lidar update presented by Larry Evans at WVAGP meeting 7 Dec 2010

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Coal fields Lidar Update (2010)

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

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