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(Article of periodic en Anglais - 2011)

Document title

Scale effect and methods for accuracy evaluation of attribute information loss in rasterization

Authors(s) and Affiliation(s)

BAI Y. (1 2) ; LIAO S. (1) ; SUN J. (1) ;
(1) State Key Lab. of Resources and Environmental Information Systems, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, CHINE
(2) Graduate Univ. of Chinese Academy of Sciences, Beijing, CHINE

Abstract

Taking land cover data of Sichuan at the scale of 1:250,000 in 2005 as a case, in view of data volume and its processing time of the study region, this study selects 16 spatial scales from 600 m to 30 km, uses rasterizing method based on the Rule of Maximum Area (RMA) in ArcGIS and 2 evaluating methods of attribute accuracy loss, which are Normal Analysis Method (NAM) and a new Method Based on Grid Cell (MBGC), respectively, and analyzes the scale effect of attribute (it is area here) accuracy loss at 16 different scales by these 2 evaluating methods comparatively. The results show that at the same scale, average area accuracy loss of the entire study region evaluated by MBGC is significantly larger than the one estimated using NAM. MBGC can not only estimate RMA rasterization attribute accuracy loss accurately, but can express the spatial distribution of the loss objectively

Source

Article of periodic

published at : Journal of geographical sciences. Acta geographica sinica / ISSN 1009-637X

Editor : CHINE

Millesime : 2011, vol. 21, no6 [pp. 1089-1100]

Bibliographic references : 21 ref.

Collation : 4 fig., 2 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1007/s11442-011-0902-1

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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