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How are topographic maps created from aerial and satellite photographs?

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Often a multilens camera is used to photograph one section vertically and the adjacent areas obliquely. The individual oblique exposures are then corrected, scaled, and joined to the vertical section to form one continuous photograph. By viewing two overlapping photographs through a stereoscope, a three-dimensional image of a region, or topographic map, can be obtained.

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Similar questions: What is the process of creating topographic maps? What technology is used to obtain the three-dimensional image on a topographic map? What kind of camera is used to photograph one section vertically and adjacent areas obliquely? What kind of camera is used to create topography maps? [ Hide these questions ]

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