Accuracy assessment of georectified aerial photographs : implications for measuring lateral channel movement in a GIS

Auteurs :
HUGHES, M.L.
MCDOWELL, P.F.
MARCUS, W.A.

Description :
The AA. investigated the sources and implications of georectification error in the measurement of lateral channel movement by testing how the number (6-30) and type (human versus natural landscape features) of ground-control points (GCPs) and the order of the transformation polynomial (first-, second-, and third-order) affected the spatial accuracy of a typical georectified aerial photograph. Error was assessed using the root-mean-square error (RMSE) of the GCPs as well as error in 31 independent test points.


Type de document :
Article de périodique

Source :
Geomorphology (Amsterdam), issn : 0169-555X, 2006, vol. 74, n°. 1-4, p. 1-16, nombre de pages : 16, Collation : Illustration, Références bibliographiques : 46 ref.

Date :
2006

Editeur :
Pays édition : Pays-Bas, Amsterdam, Elsevier