Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Wisconsin Aerial Imagery Ted Koch, State Cartographer WI State Cartographer’s Office Univ. of Wisconsin-Madison

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 High Resolution Images (< 1 meter; i.e. 6”, 12”, 18”) 2005 a banner year for digital orthophoto acquisition. Approx. 60% (~20 m acres) of state’s area. Value - approx. $2.5 million.

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 What’s a Digital Orthophoto? Aerial photo –Captured by film-based or digital camera. –Contains distortions due to differences in terrain elevation and aircraft position. –Does not have constant scale across the image.

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 What’s a Digital Orthophoto? Digital Image produced by: –Geometric correction of the image –Unwarping the effects of distortion due to terrain and camera position.

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 What is a Digital Orthophoto? Produced from a variety of inputs: –Digital image –Control – values of known points –Terrain Model – DEM or DTM –Image rectification to terrain model, and fit to a map projection –Metadata

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, Ortho Acquisition Statewide Local (counties and municipalities)

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Statewide NAIP (National Agricultural Imagery Program) –Nationwide program, administered by the USDA-FSA –Acquired for crop compliance programs –Flown during growing season

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Statewide NAIP Products: –Natural color –Two resolutions: 1-meter ortho (matches w/i 3-meters of DOQQ reference image) 2-meter geo-rectified (matches w/i 10 meters of DOQQ reference image)

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 NAIP Image Prescott, Pierce County (from MN coverage)

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Statewide NAIP Products: 1-Meter Ortho –Format: DOQQ or compressed county mosaic –UTM coordinate system, NAD 83 –10% cloud cover allowed –Base for “common land unit boundaries”

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Statewide NAIP in Wisconsin : –1-meter statewide planned –Funding: FSA % Cooperative funding from state organizations: –DNR - $150,000 –DATCP - $20,000 –10 WI counties - $~$5,000 each

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Statewide NAIP Wisconsin contact: Larry Cutforth USDA-FSA, GIS Specialist 608/ , Ext 139

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Local

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Black & White Orthos 1” = 100’ scale 18” & 6” resolution (Photos courtesy Ayres Assoc)

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Black & White Orthos 1” = 50’ scale 18” & 6” resolution (Photos courtesy Ayres Assoc)

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Black & White Orthos 1” = 100’ scale 12” & 6” resolution (Photos courtesy Ayres Assoc)

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Black & White Orthos 1” = 50’ scale 12” & 6” resolution (Photos courtesy Ayres Assoc)

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Natural Color Orthos 1” = 50’ & 1” = 100’ scale 3” resolution (Photos courtesy Ayres Assoc)

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Coordination Accomplished thru three major regional consortia: - SEWRPC - EC/NC/BL RPC - SW Counties - Next presentation will cover in more detail

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Aerial Technologies Traditional: –Camera & film –Scanning –Ground control + ground targets

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Aerial Technologies Recent: –Airborne GPS (reduces need for ground control) –Forward motion compensation and inertial measurement units (IMUs) –Digital cameras (cutting edge)

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Digital Camera

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 National Activities What’s under discussion: –NSGIC Proposal - Funding –USGS Proposal - Funding –FGDC/Am Nat’l Stds Institute (ANSI) - Digital Ortho Framework Standard – Currently in draft review (July, 2004)

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Conclusion Impacts –2005, lots of data (statewide & local) Future scenario(s) –Long term vision, & improved coordination –Stable and predictable funding –Plan for 2010 –Technological advances (i.e., digital cameras, near real-time image processing, etc.)

Wisconsin Aerial Imagery Ted Koch, Wisconsin State Cartographer’s Office WLIA 2005 Annual Conference February 24 th, 2005 Questions ?