Table of Contents
MN GIS/LIS Consortium
From the Chair
Stimulus Funding Map
Chronic Wasting Monitoring
Commendation to Goodhue Co.
Base Map Services
LiDAR Use in Winona Co.
Rice Co. Pictometry
Prairie Island Natural Resources
Fillmore Co. GIS
Prior Lake / Scott Co. Collaboration
Historic SPOT Online
Will Craig: URISA Hall of Fame
|Rice County Uses Pictometry’s ChangeFindr
By Michelle Trager, GISP, Rice County GIS Coordinator
In 2007, Rice County purchased digital color, oblique aerial photography from Pictometry with the intention of using the imagery to assist the Assessor’s Office with valuations; the Sheriff’s Office with planning search, raid and seizure operations; and the Planning and Zoning Department with enforcement, planning, and presenting information to the County Board, Planning Commission, and Board of Adjustment. The county has used the imagery for these purposes and more.
This year, Rice County purchased another set of imagery from Pictometry along with a product called ChangFindr. Using the ChangeFindr data and software, county staff are able to view both the 2007 and the 2009 photography side-by-side and analyze the differences between the years. With the Pictometry software, users can analyze and verify changes by measuring distances and heights from the images.
With the purchase of ChangeFindr, Rice County received building footprints of structures 150 square feet or larger, the length of sides of the building footprints, building center points, change candidate files (telling how the building footprints change between 2007 and 2009), Change Analysis Software to compare imagery side-by-side, and a regional status report.
GIS technicians at Rice County have been reviewing the data to find new structures, additions to structures and demolished structures. They are also checking the County’s appraisal database, Vanguard, to see if the changes have been picked up by the appraisers.
Rice County has also used the ChangeFindr data to create address points for the addresses within city limits (the points outside city limits were already created). We also plan to add the building footprints to the emergency response maps we are creating that include the U.S. National Grid.
For further information, contact Michelle Trager, Rice County GIS Coordinator, at firstname.lastname@example.org