What distinguishes a DOQQ, or Digital orthquarter quads, image
from a normal aerial photo is that it is a georectified raster image, meaning
it digitally removes camera tilt and image displacement caused by terrain
relief. Thus, a DOQ can combine
the characteristics of a photo with the geometric qualities of a map. This DOQQ map gives an aerial,
normal-color, view of one of West Virgina’s state forests, Cooper’s Rock State
Forest, as well as Mont Chateau State Park. The contour lines show equal lines of height while the color
shadings are realistic depictions of reality, since they are taken from aerial
photos.
No comments:
Post a Comment