Editing Photogrammetry (section)

===Mapping===
{{Over-quotation|date=June 2019|many=y}}
Photomapping is the process of making a map with "cartographic enhancements"<ref name=Petrie1977_50>Petrie (1977: 50)</ref> that have been drawn from a [[Orthophotomosaic|photomosaic]]<ref name=Petrie1977_49>Petrie (1977: 49)</ref> that is "a composite photographic image of the ground," or more precisely, as a controlled photomosaic where "individual photographs are rectified for tilt and brought to a common scale (at least at certain control points)."

Rectification of imagery is generally achieved by "fitting the projected images of each photograph to a set of four control points whose positions have been derived from an existing map or from ground measurements. When these rectified, scaled photographs are positioned on a grid of control points, a good correspondence can be achieved between them through skillful trimming and fitting and the use of the areas around the principal point where the relief displacements (which cannot be removed) are at a minimum."<ref name=Petrie1977_50>Petrie (1977: 50)</ref>

"It is quite reasonable to conclude that some form of photomap will become the standard general map of the future."<ref name=Robinson_et_al1977_10>Robinson et al. (1977:10)</ref> They go on to suggest{{who|date=June 2019}} that, "photomapping would appear to be the only way to take reasonable advantage" of future data sources like high altitude aircraft and satellite imagery.