Resource provided by WisconsinView.
Ayres Associates provided Brown County, Wisconsin with digital, 4-band orthoimagery services in 2023 as part of WROC. The aerial imagery was collected on May 9th using a Leica Geosystems DMC III sensor mounted in a fixed-wing aircraft. Aerial imagery was collected to support 0.5 foot ground sample distance (GSD) orthoimagery to meet ASPRS Class I horizontal accuracy specifications at 1 inch =100 feet map scale. The NSSDA test results against existing X,Y locations was .427 feet RMSE. Resultant orthoimagery was rectified to a DEM surface created from countywide LiDAR data acquired in 2020. Orthoimagery was delivered in GeoTiff, MrSID tiles, municipal MrSID mosaics, and a county-wide MrSID mosaic. The orthoimagery was delivered according to a county supplied tile schematic. Supplemental Information: The Wisconsin Regional Orthoimagery Consortium (WROC) is a multi-entity group of county members and partners led by representatives from Ayres Associates and the North Central Wisconsin Regional Planning Commission (NCWRPC). The goal of the consortium is to build and sustain a multi-participant program to acquire digital orthoimagery and elevation data throughout Wisconsin. Orthoimagery was collected for Brown County in 2023 to provide consistent deliverable products and accuracy standards for each of the participating entities.