Sunday, July 17, 2011

DOQQ



DOQQ, which stands for Digital Orthophoto Quarter Quadrangle , are aerial photos that have been geometrically corrected to better show the geographic location for what it is. This means that it is much like a map, and in many ways appears to be a true map in it's design. A DEM map is required in order to properly convert a series of aerial photos into a DOQQ as well. The map shown here is a DOQQ taken of small rural area. The landscape and it's colors are easily visible, and the rivers and depressions or rises in terrain are also easy to make out. By judging the photo entirely, one can visually point out important locations or landmarks.

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