Trimetrogon

Trimetrogon is an aerial photographic survey involves the use of three cameras in one assembly. A camera is pointed directly downwards and the other two are pointed to either side of the flight path at a depression angle from vertical of 60 degrees. The images overlap, allowing the use of stereographic interpretation of topography.[1][2] The name comes from the Metrogon cameras used in the original montages.[3]

References

  1. ↑ "Antarctic Air Photography". Polar Geospatial Center. University of Minnesota. Retrieved 13 August 2015.
  2. ↑ "Trimetrogon Photography". CEARS- Historic Aerial Photo Blog. Wordpress.com. 21 May 2014. Retrieved 13 August 2015.
  3. ↑ "trimetrogon". American Heritage Dictionary of the English Language. Houghton Mifflin Harcourt. 2015. Retrieved 13 August 2015.

Further reading

  • Imhof, R.K.; Doolittle, R.C. (1966). Thompson, M.M., ed. Mapping from oblique photographs (3rd ed.). Falls Church, Virginia: American Society of Photogrammetry. pp. 875&ndash, 917.


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