…or matching Georectification of Historic Aerial Photographs for Douglas County, Kansas ESRI Education Users Conference 2004 Rhonda Houser, University of Kansas
Air Photo Project, ESRI Education Users Conference Introduction enhance existing image archive contribute to technical methodology add to supply of historical spatial data create data that can be used with other spatial data
Air Photo Project, ESRI Education Users Conference Background Scan Use air photos from 1930s to 1980s Convert print photo to image by scanning Determine township, range and section
Air Photo Project, ESRI Education Users Conference Target image- unknown geographic coordinates Georeference Reference image- known geographic coordinates
Air Photo Project, ESRI Education Users Conference Coarse adjustment… shift, rotate, etc. Georeference
Air Photo Project, ESRI Education Users Conference Identify potential links between target… Georeference
Air Photo Project, ESRI Education Users Conference … and reference image. Georeference
Air Photo Project, ESRI Education Users Conference Create a link on target image Georeference
Air Photo Project, ESRI Education Users Conference Create a matching link on reference image Georeference
Air Photo Project, ESRI Education Users Conference Repeat process to identify matched points Georeference
Air Photo Project, ESRI Education Users Conference Georeference
Air Photo Project, ESRI Education Users Conference Georeference
Air Photo Project, ESRI Education Users Conference Georeference
Air Photo Project, ESRI Education Users Conference Georectify
Air Photo Project, ESRI Education Users Conference Georectify
Air Photo Project, ESRI Education Users Conference Georectify
Air Photo Project, ESRI Education Users Conference Create Metadata
Air Photo Project, ESRI Education Users Conference Online Image Archive Air photos are available online: www2.lib.ku.edu/mapscoll/web/airindex.htm
Air Photo Project, ESRI Education Users Conference Choose quadrant
Air Photo Project, ESRI Education Users Conference Choose area
Air Photo Project, ESRI Education Users Conference Choose year
Air Photo Project, ESRI Education Users Conference View or download image
Air Photo Project, ESRI Education Users Conference Applications land surveying and property valuation geography and remote sensing classes ecological classification wildlife habitat mapping drought detection geology and soil classification transportation studies archaeological/ anthropological sites historic trails
Air Photo Project, ESRI Education Users Conference KU Memorial Stadium 1937
Air Photo Project, ESRI Education Users Conference KU Memorial Stadium 1954
Air Photo Project, ESRI Education Users Conference KU Memorial Stadium 1966
Air Photo Project, ESRI Education Users Conference KU Memorial Stadium 1976
Air Photo Project, ESRI Education Users Conference Acknowledgements Sources of data: Street data Digital orthophoto, county boundary and road data, public land survey system data Digital air photo files
Air Photo Project, ESRI Education Users Conference Acknowledgements Contributors: Douglas County Public Works Ben Hatfield and Julienne Emry Various KU students, staff and faculty This investigation was supported by the University of Kansas General Research Fund Allocation #