The U.S. Geological Survey is converting its primary map production and revision operations to use digital photogrammetric techniques. The primary source of data for these operations is the digital orthophoto quadrangle derived from National Aerial Photography Program images. These digital orthophotos are used on workstations that permit comparison of existing vector and raster data with the orthophoto and interactive collection and revision of the vector data.
Citation Information
Publication Year | 1995 |
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Title | Digital photogrammetry at the U.S. Geological Survey |
Authors | Clifford W. Greve |
Publication Type | Conference Paper |
Publication Subtype | Conference Paper |
Index ID | 70018850 |
Record Source | USGS Publications Warehouse |