The development of an automated correction procedure for digital photogrammetry for the study of wide, shallow, gravel-bed rivers

Auteurs :
WESTAWAY, R.M.
LANE, S.N.
HICKS, D.M.

Description :
This paper develops an automated correction procedure for dealing with point errors associated with through-water photogrammetry, for application in the study of clear-water, shallow gravel-bed rivers. The procedure involves combining digital photogrammetry and image analysis techniques to : correct for the effects of refraction at an air-water interface; and eliminate and reinterpolate points where the bed has not been seen. The correction procedure was applied to raw digital elevation models (DEMs) generated using digital photogrammetry from 1:3000 scale aerial photography of a small reach of the North Ashburton River, New Zealand.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2000, vol. 25, n°. 2, p. 209-226, Collation : Illustration, Références bibliographiques : 32 ref.

Date :
2000

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley