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Michigan 2005 Digital Orthophoto Quads This data set contains 1-meter resolution imagery derived from the 2005 National Agriculture Imagery Program (NAIP) statewide aerial imagery acquisition. Data have been repositioned to the Michigan GeoRef coordinate system. Each image is a three band, natural color digital orthoimage acquired during the agricultural growing season of 2005 (June - August). This orthoimage meets horizontal National Map Accuracy Standards (NMAS) at a scale of 1:12,000 (+/- 33.33 feet). The tiling format (image extent) is based on a 3.75' x 3.75' quarter-quadrangle. NAIP specifications allow for as much as 10% cloud cover per tile. The 1-meter resolution Michigan Georef imagery is intended to serve as a GIS base map data source for the entire State of Michigan. A State of Michigan Partnership, the Michigan Aerial Imagery Partnership (MAIP), was organized to help provide matching funds to the NAIP program. Partners included The Land Policy Institute (LPI) and Remote Sensing & GIS Research and Outreach Services (RS&GIS) at Michigan State University, as well as the Michigan Departments of Environmental Quality (MDEQ), Natural Resources (MDNR), Transportation (MDOT), Labor and Economic Growth (DLEG), Agriculture (MDA), Michigan State Police (MSP) and the Center for Geographic Information (MCGI). Image tiles have been compressed at a ratio of 10:1 into an ECW compression format. This Enhanced Compression Wavelet format can compress an extremely large amount of image data into a relatively small compressed file with less loss of image quality than other methods. A plug-in may be required to view this data. Plug-ins are available at www.ermapper.com. File names are derived from the partitioning of the USGS 7.5' topographic quadrangle maps into four quadrants, corresponding to the area covered on each image. The name consists of the full quadrangle name, written as a single word, followed by the quadrant abbreviation NE, NW, SE, SW. |
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