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Aerial Photography (Orthophoto) - 2002
The quarter-quadrangle mosaics of orthoimage chips were created as part of an implementation of The National Map (TNM) to provide large-scale imagery of the area. |
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Aerial Photography (Orthophoto) - 2002
The quarter-quadrangle mosaics of orthoimage chips were created as part of an implementation of The National Map (TNM) to provide large-scale imagery of the area. |
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Cassandra Ladino & Sharon Hamann worked on mosaicking the orthophotos into the 7.5-minute quads and prepared the indexes. |
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4184.1877719430995 |
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["ArcGIS Server","Data","Image Service","Service"] |
| description:
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<div style='text-align:Left;'><div><div><p><span>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. For this dataset, the natural color orthoimages were produced at 0.3-meter pixel resolution (approximately 1-foot). The design accuracy is estimated not to exceed 3-meter diagonal RMSE (2.12m RMSE in X or Y). Each orthoimage provides imagery for a 1500- by 1500-meter block on the ground. The projected coordinate system is UTM with a NAD83 datum. There is no image overlap been adjacent files. The naming convention is based on the U.S. National Grid (USNG), taking the coordinates of the SW corner of the orthoimage. Each GeoTiff file is a mosaic of orthoimages covering a USGS quarter-quadrangle. The index of orthoimage chips for each USGS quarter-quadrangle is in the file ortho_quad_index.mxd.</span></p></div></div></div> |
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<div style='text-align:Left;'><div><div><p><span>None. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data.</span></p></div></div></div> |
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| title:
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Ortho_2002 |
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Image Service |
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https://10.82.20.154:6443/arcgis/admin |
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["district of columbia","aerial","orthophotos","dc","washington dc"] |
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en-US |
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Ortho_2002 |
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8569216.556939468 |
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NAD_1983_StatePlane_Maryland_FIPS_1900 |