oa Civil Engineering = Siviele Ingenieurswese - The application of aerial photography to engineering surveys



The aim of this paper is to sketch the elementary principles of the science of photogrammetry, showing how the use of stereoscopy makes it possible to compile accurate topographical maps from photographs. After brief mention of the instruments and processes involved, data are given indicating standards of accuracy attainable. Comparisons are made with ground survey methods and costs, and reference is made to a number of applications to engineering survey problems of various kinds. As the subject is vast, its treatment must of necessity be somewhat superficial.


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