- A Digital Orthophoto Quadrangle (DOQ) is a computer-generated image of an aerial photograph in which the image displacement caused by terrain relief and camera tilt has been removed. The DOQ combines the image characteristics of the original photograph with the georeferenced qualities of a map.
- The map above is a DOQQ of the Washington DC area. These types of maps seem very easy to see details.
- http://seamless.usgs.gov/website/seamless/products/1doqq.asp
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