Digital orthophoto quadrangles
- Digital orthophoto quadrangles
Digital orthophoto quarterquads (shortened to DOQ's) are aerial or satellite photography that have been corrected so that its pixels are aligned with longitude and latitude lines, and have a narrowly defined region of coverage. This is a widely used format introduced by United States Geological Survey. The correction technique is called rectification and is a large part of photogrammetry. [http://www.univie.ac.at/Luftbildarchiv/wgv/intro.htm] [http://erg.usgs.gov/isb/pubs/factsheets/fs05701.html]
Much more information at the page for Orthophoto.
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