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trimetrogon
tri·met·ro·gon T0360000 (trī-mĕt′rə-gŏn′)n. A system of aerial photography in which one vertical and two oblique photographs are simultaneously taken for use in topographic mapping.
[tri- + Metrogon, trademark for a kind of camera lens.]trimetrogon (traɪˈmɛtrəˌɡɒn) n (Photography) a. a method of aerial photography for rapid topographic mapping, in which one vertical and two oblique photographs are taken simultaneouslyb. (as modifier): trimetrogon photography. [from tri- + metro-, from Greek metron measure + -gon]trimetrogon
trimetrogonA fan camera arrangement for production of maps and charts. Three cameras with wide-angle lenses are mounted together to give lateral coverage from horizon to horizon. The center camera is used for vertical photography and the outer two cameras for oblique photography. A trimetrogon installation is shown in the illustration. |