Trimetrogon
Trimetrogon is an aerial photographic survey method that involves the use of three cameras in a single assembly. One of the cameras is pointed directly downwards, and the other two are pointed to either side of the flight path at a depression angle from the horizontal of 30 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
- ↑ "Antarctic Air Photography". Polar Geospatial Center. University of Minnesota. Retrieved 13 August 2015.
- ↑ "Trimetrogon Photography". CEARS- Historic Aerial Photo Blog. Wordpress.com. 21 May 2014. Retrieved 13 August 2015.
- ↑ "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. 875–917.
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