availability of lidar data in washington state lidar workshop january 3rd 2008 terry curtis, c.p....
TRANSCRIPT
![Page 1: Availability of LiDAR data in Washington State LiDAR Workshop January 3rd 2008 Terry Curtis, C.P. Photogrammetry Supervisor Wash. Dept. of Natural Resources](https://reader035.vdocuments.mx/reader035/viewer/2022070409/56649e965503460f94b9a3e0/html5/thumbnails/1.jpg)
Availability of LiDAR data in Washington State
LiDAR Workshop January 3rd 2008
Terry Curtis, C.P.
Photogrammetry Supervisor
Wash. Dept. of Natural Resources
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DNR - Land Management and Regulation5 Million acres of Trust Lands
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Some LiDAR Misconceptions• LiDAR data is NOT “Imagery”• It’s just a bunch of elevation POINTS……
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• LiDAR data is NOT “perfect”…• Vegetation is the enemy
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• LiDAR does NOT replace Aerial Photography• Aerial photography contains true SPECTRAL information and actual
IMAGERY, and should be used in conjunction with LiDAR.
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LiDAR Compare
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Aerial Compare
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• LiDAR data isn’t “FREE”• Yes, there is some Publicly available or Public Domain data
• SOMEONE had to pay for it initially
• LiDAR is EXPENSIVE !!
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WHERE can I obtain existing LiDAR data ??
• Counties
• Federal Agencies (USGS, NOAA)
• Other Public Agencies
• Private Companies (good luck!)
• Puget Sound LiDAR Consortium (PSLC)
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PSLC Webpage
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History of LiDAR in PNW 1996 > Present
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HISTORY MAP
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Current BASIC data specifications
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PSLC Status Map
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Status Comparison
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Known NON-PSLC Data Available, Planned, or In Progress
• USGS/DNR Skagit/Whatcom Project
• DNR Forest Inventory Blocks
• San Juan County
• Spokane County/Avista
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Skagit Whatcom
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DNR - Image Tree
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San Juan Proposed
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What if no LiDAR data exists for my project ?
• Issue your own RFP for LiDAR acquisition• Look for PARTNERS to reduce costs• Economy of scale - larger area = lower unit cost• PLAN AHEAD - a MINIMUM of one full year• Few local vendors or vendors with WA experience• Be wary of low-cost proposals• Can use PSLC/Kitsap County CONTRACT
Established specs and pricing
They do the contract admin and QA/QC
Proven track record - knowledgeable scientists and staff
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Where Can I learn about…
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ASPRS-Portland
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Top Surface
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Bare Earth
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Aerial
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LiDAR Apples
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Apples