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Photogrammetry

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photogrammetry
thumb|upright=1.3|Low altitude aerial photograph for use in photogrammetry. Location: Three Arch Bay, [[Laguna Beach, California.]] Photogrammetry is the science and technology of obtaining reliable information about physical objects and the environment through the process of recording, measuring and interpreting photographic images and patterns of electromagnetic radiant imagery and other phenomena. thumb|Photogrammetry of the headquarters of Fazenda do Pinhal, São Carlos-SP, Brazil While the invention of the method is attributed to Aimé Laussedat, the term "photogrammetry" was coined by the
orthophoto
thumb|right|Orthographic views project at a right angle to the datum plane. Perspective views project from the surface onto the datum plane from a fixed location. thumb|Aerophotogrammetry, orthophoto from unmanned aerial vehicle|drone, Città Alta, [[Bergamo, Italy.]] thumb|This photo is properly projected on elevation model, yet on a single building scale, a small tilt is noticeable. This is an orthophoto, but not a true orthophoto (not all vertical features are reprojected). thumb|This photo is assembled from several overlapping photos from UAV, completely removing any residual tilt of the bu
aerial survey
collection of geophysical data from aircraft
dark-frame subtraction
removal of dark current and fixed-pattern noise in long-exposure photography
rephotography
thumb|200px|right|Crocker Art Museum, Sacramento, California thumb|right|Fox Tucson Theatre, then and 2008
structure from motion
a photogrammetric range imaging technique
Ground sample distance
distance between pixel centers in remote sensing