http://sofia.usgs.gov/publications/fs/2004-3016/
Infrared Aerial Photography is a type of map because of how powerful of a tool it is. Infrared's film and infrared digital sensors are so sensitive to a certain portion of the light spectrum, that they can provide very useful information (after careful filtration, processing/selection of films, etc.). These photos can be used to document changes to the environment (i.e., the health of forests, the Everglades, any bodies of water), but can also be used for more detail oriented jobs, like observing damages to roofs, or detecting where toxic chemicals are on land.
The infrared aerial photo above shows the southern Florida peninsula.
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