2006 index scanning project - farm service agency2006 index scanning project photo, line, and spot...
TRANSCRIPT
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2006 Index Scanning ProjectPhoto, Line, and Spot Indexes
Brian VanderbiltGIS Specialist
USDA Farm Service AgencyAerial Photography Field Office
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Overview
• Purpose• The Contract• Deliverables• Inspection Process• Status Summary• Samples
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Purpose
• Accomplish the scanning of specified photo, line, and spot index reference maps for purposes of preservation.
• Provide greater visibility of, and access to, historical imagery products.
• Provide georeferencing and shapefile creation to facilitate retrieval in GIS
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Contract• http://www.fsa.usda.gov/Internet/FSA_File/rfp-apfo-10-06.pdf
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Deliverables
• Original Scan (TIFF)• Georeferenced Scan (GeoTIFF)• Georeferenced Scan Metadata• Enhanced Shapefile• Shapefile Metadata• Control Point File• Scan Support File
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Inspection Process
• Automated– Python scripts
• Manual– 100% inspection on images– 100% spot inspection on shapefiles
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Status Summary
• Scanning is under way– Fast paced scanning effort
• Hurdles– Scanner modifications– Calibration/Stitching– Georeferencing
– Initial product deliverable coming soon…• Scans completed thus far – 64,000/71,360• Georeferenced thus far - 0• Enhanced shapefiles completed thus far - 0
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Samples
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1961
1982
Brooks County, TX
1968
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