Download - Multispectral imagery and li dar zourarakis
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Soil and Water Conservation Society2016 Annual ConferenceLouisville KY – Galt HouseTuesday July 26th, 2016
Demetrio P. Zourarakis, Ph.D., GISP, CMS‐RS, CMS‐GIS/LIS
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Erosional Pattern Recognitionor
Saving Dollars with GIS and Remote Sensing
or‘Information’ (as opposed to ‘data’)
Conservationor
Spatial Intelligence in Conservationor...
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$aving$ because...
• Shrinking budgets• Staffing issues• Changing climate patterns
• GIS (geospatial)+ IT ...– Cloud– UAV/sUAS– Next Gen LiDAR– IoT– Etc. etc. etc.
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The case for photointerpretation
• Available data– NAIP (4‐band, 8 bit, biennial, 1‐meter)– LiDAR
• Data/Information layers – REST services– Readily available– Cloud storage
• Image enhancement– COTS– Open Source
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The case for image classification/feature extraction
• Processing power and memory capacity– Ubiquitous
• Data/Information layers – REST services– Readily available– Cloud storage
• Image enhancement– COTS– Open Source
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Where to begin?
• Keep in mind objectives– Soil erosion control?– Streambank restoration?
• Extent (“scale”) of Area of Interest?
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Examples
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Active Soil Erosion
• Hopkins County• Western Coal Field Region• Green River Basin• 2014 NAIP• 2014 KYAPED• 5‐foot LiDAR DEM
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Streambank Erosion
• Scott County• Inner Bluegrass Region• Kentucky River Basin• 2012 NAIP• 2012 KYAPED• 5‐foot LiDAR DEM
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Erosion/Karst
• Shelby County• Outer Bluegrass Region• Lower Ohio ‐ Salt River Basin• 2012 NAIP• 2012 KYAPED• 5‐foot LiDAR DEM
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Where to...?
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TWO ACRONYMS TO KNOW –building blocks in the Cloud!
REST: Representational State Transfer – a simple, open Web interface to access services hosted by ArcGIS Server
URL: Uniform Resource Locator – a Web address – such as that for the endpoint for a GIS service published to ArcGIS Server:
• http://kygisserver.ky.gov/arcgis/rest/services(Web Mapping Services: e.g. KY Schools service)
• http://kyraster.ky.gov/arcgis/rest/services(Image Services: e.g. Imagery and Terrain)
• http://services.nationalmap.gov/arcgis/rest/services(Geonames)
Zourarakis ‐ 28
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http://kyraster.ky.gov/arcgis/rest/services/ElevationServices
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http://kyraster.ky.gov/arcgis/rest/services/ElevationServices/Ky_DEM_KYAPED_5FT_ShadedRelief/ImageServer
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Tile Selection Tool (under development)
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Courtesy: Hexagon Geospatial
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UAV/UAS or “Drones”• Disruptive technology• DIM (Dense or High Density Image Matching)• Point Clouds (Elevation) *from images*• Not LiDAR
http://www.ifp.uni‐stuttgart.de/forschung/Photogrammetry_ComputerVision/Dense_Matching/index.en.html
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http://www.gim‐international.com/content/article/automatic‐point‐cloud‐generation‐and‐3d‐modelling‐from‐aerial‐images
https://www.sensefly.com/home.html
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Thank you!
Questions?