Original Research

Application of stereo photogrammetric techniques for measuring African Elephants

A. J Hall-Martin, H Ruther
Koedoe | Vol 22, No 1 | a658 | DOI: https://doi.org/10.4102/koedoe.v22i1.658 | © 1979 A. J Hall-Martin, H Ruther | This work is licensed under CC Attribution 4.0
Submitted: 02 December 1979 | Published: 02 December 1979

About the author(s)

A. J Hall-Martin, Division of Research and Information, South Africa
H Ruther, University of Cape Town, South Africa

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Measurements of shoulder height and back length of African elephants were obtained by means of stereo photogrammetric techniques. A pair of Zeiss UMK 10/1318 cameras, mounted on a steel frame on the back of a vehicle, were used to photograph the elephants in the Addo Elephant National Park, Republic of South Africa. Several modifications of normal photogrammetry procedure applicable to the field situation (eg. control points) and the computation of results (eg. relative orientation) are briefly mentioned. Six elephants were immobilised after being photographed and the measurements obtained from them agreed within a range of 1 cm-10 cm with the photogrammetric measurements.


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