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(Article of periodic en Anglais - 2011)

Document title

Evaluation of the controls affecting the quality of spatial data derived from historical aerial photographs

Authors(s) and Affiliation(s)

WALSTRA J. (1) ; CHANDLER J.H. (2) ; WACKROW R. (2) ;
(1) Dep. of Languages and Cultures of the Near East and North Africa, Univ., Ghent, BELGIQUE
(2) Dep. of Civil and Building Engineering, Univ., Loughborough, ROYAUME-UNI

Abstract

Data-sets from 2 case-studies provided a variety of source data and hence a good opportunity to evaluate the influence of the quality of archival material on the accuracy of coordinated points. Based on the statistical weights assigned to the measurements, precision of the data was estimated a priori, while residuals of independent checkpoints provided an a posteriori measure of data accuracy. Systematic discrepancies between the two values indicated that the routinely used stochastic model was incorrect and overoptimistic. It is showed that the random errors not only appeared to be much larger than values accepted for appropriately controlled and targeted photogrammetric networks, but also small undetected gross errors were induced through the ‘misidentification’ of points. Using optimized weighting factors is therefore suggested

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2011, vol. 36, no7 [pp. 853-863]

Bibliographic references : 36 ref.

Collation : 6 fig., 6 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2111

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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