2008 NAIP Orthoimagery Update

Chris CialekMN Land Management Information Center

May 7, 2008

Agreement

Shared-funding agreement to provide state coverage of color digital aerial photographs in 2008

Brokered through the USDA’s Farm Service Agency (FSA) as part of its National Agriculture Imagery Program (NAIP) 

Eight state agencies are helping to provide state’s share to fund the project

Product Specifications

Full statewide coverage 1-meter resolution (options may exist for higher

resolution data cost-sharing partnerships) Digital, four band camera: red, green, blue, near-

infrared (NIR) Orthorectification using ground control coordinated by

MnDOT Two products will be delivered:

Compressed county mosaics Natural color (no NIR in this format) JPEG2000 format Delivery likely to begin in September 2008

Uncompressed quarter-quadrangle files Four bands: red, green, blue and NIR GeoTIFF format Delivered as quality-control is completed, likely during the

first quarter of 2009

Control Targets

MnDOT establishing control point network to assure accuracy

Contributors: MnDOT >100 points 80 counties ~300 points

(11 completed) Accuracy

Contracted: 6 meters Anticipated (MnDOT): 4-5 meters

MN Vendor Announced 4/17/08

Financials

Final accepted bid price $1,329,322.50

Federal portion $923,322.50

State portion $406,000.00

Number of project square miles 87,328

Total cost per square mile $15.22

Federal cost per sq mi $10.57

State cost per sq mi $4.65

Recent Developments

FSA will allow early flights over six northeastern counties – Cook, Lake, St. Louis, Carlton, Koochiching and Itasca – in hopes of collecting leaf-off imagery.  Weather conditions will largely dictate how successful this effort will be. 

In addition to providing leaf-off orthoimagery for the Arrowhead, SURDEX is considering flying the region at a lower elevation to produce two-foot resolution orthoimagery, in addition to the federally-contracted one-meter product.  Incremental cost of providing the higher resolution product is about $15.00 per square mile. 

If you think your county or municipality might be interested in partnering in this higher resolution “buy-up”, or if you have questions about the project, please contact Minnesota’s NAIP state liaison, Chris Cialek, as soon as possible.

Schedule

Image Acquisition

June July Aug Sept Oct Nov Dec Jan Feb Mar April MayMay

Compressed County Mosaic

Full ResolutionQuarter Quads

Quality Assurance

Partners

Online

Updates: http://www.lmic.state.mn.us/chouse/airphoto_usda.htmlSamples: ftp://ftp.lmic.state.mn.us/pub/data/remote_sensing/naip_2008_2ft