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Use of the Bradley傍erry Model to Quantify Association in Remotely Sensed Images


Stein, A and Aryal, J and Gort, G, Use of the Bradley-Terry Model to Quantify Association in Remotely Sensed Images, I E E E Transactions on Geoscience and Remote Sensing, 43, (4) pp. 852-856. ISSN 0196-2892 (2005) [Refereed Article]

Copyright Statement

Copyright 2005 IEEE

DOI: doi:10.1109/TGRS.2005.843569


Thematic maps prepared from remotely sensed images require a statistical accuracy assessment. For this purpose, the -statistic is often used. This statistic does not distinguish between whether one unit is classified as another, or vice versa. In this paper, the Bradley傍erry (BT) model is applied for accuracy assessment. This model compares categories pairwise. The probability of one class over another class is estimated as well as the expected values of class pixels. The study is illustrated with an Advanced Spaceborne Thermal Emission and Reflection Radiometer image from the Netherlands, to which a maximum-likelihood classification with the Euclidean distance is applied. An error matrix is generated using an IKONOS image from the same area as ground truth. It is shown to which degree the BT model extends the -statistic. A comparison with the Mahalanobis distance is made. Standardization is carried out to overcome problems emerging from the fact that a common BT model does not include the number of correctly classified pixels. The study shows how the BT model serves as an alternative to the usual -statistic.

Item Details

Item Type:Refereed Article
Research Division:Engineering
Research Group:Geomatic engineering
Research Field:Photogrammetry and remote sensing
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the earth sciences
UTAS Author:Aryal, J (Dr Jagannath Aryal)
ID Code:80443
Year Published:2005
Web of Science® Times Cited:26
Deposited By:Geography and Environmental Studies
Deposited On:2012-10-31
Last Modified:2013-04-19

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