Digital orthographic quarter-quads (DOQQ) uses an aerial photograph then georeferences and orthorectifies the photo to give the photo geometric qualities of a map. Orthorectification removes any distortion from the photograph so it can be used as a flat map. This allows for ground features to be displayed in their true position. Unlike generalized maps, DOQQs provide the same amount of detail for different elevations. This map is a DOQQ of Necadah, WI. Notice how the aerial photo portrays all of the different elevations equally.
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