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USGS High Resolution Orthoimagery for St. Johns County, Florida: 17RMN575775_201401_0x2500m_CL_1


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File Modification Date
2015-10-09 01:16:00


U.S. Geological Survey, and St. Johns County, FL, 2014, USGS High Resolution Orthoimagery for St. Johns County, Florida: 17RMN575775_201401_0x2500m_CL_1: U.S. Geological Survey: Sioux Falls, SD,,,


"This file references tiled orthogonal imagery produced from nadir images captured by Pictometry International during the period of January 7th, 2014 to February 24th, 2014. Automatic aerial triangulation (AAT) was performed. The triangulated frames were rectified to a Customer Provided derived DEM. Mosaicing was performed using an automatic seaming algorithm and manually edited to eliminate seams through elevated features where possible." An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map. There is no image overlap [...]


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Original FGDC Metadata

24.66 KB


"Orthogonal image mosaic to support the needs of FL St Johns. Other uses expected." A digital orthoimage is a geometrically accurate photographic record of landscape conditions at the time of the corresponding aerial photography. As such, High Resolution Orthoimagery is useful for a variety of applications, such as environmental monitoring, facility engineering/maintenance, city/county planning, property line review, etc. The digital orthoimage can be used alone or as a raster basemap for corresponding vector line mapping. The detailed focus of High Resolution Orthoimagery provides emergency responders critical information in determining the best evacuation routes, alternative routes and safe access to aid. High Resolution Orthoimagery assists law enforcement personnel in determining the best locations to place surveillance cameras in high-traffic urban areas and popular attractions. The data assists Federal, State and local emergency responders in planning for homeland security efforts. This data also supports The National Map.

Additional Information


Type Scheme Key
id gda 7347145

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