Digital Orthophoto Quarter Quadrangle (DOQQ): A digital raster (pixel based ) image of an aerial photograph in which displacements caused by the camera and terrain have been removed through orthorectification. It combines the image qualities of a photograph with the geometric qualities of a map. A DOQ is either B&W or color infrared (CIR) and represents one USGS 7.5 minute quadrangle. A DOQQ is one quarter of the quadrangle, so the DOQ name is followed by SE, NE, SW, or NW. DOQQ scale is 1:12,000 or 1" = 1,000' .