Analytical Modelling of Positional and Thematic Uncertainties in the Integration of Remote Sensing and Geographical Information Systems |
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| Authors: | W.Z. Shi,M. Ehlers,& K. Tempfli |
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| Affiliation: | The Hong Kong Polytechnic University, Hong Kong,;University of Vechta, Vechta, Germany,;International Institute for Aerospace Survey and Earth Sciences (ITC), Enschede, The Netherlands |
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| Abstract: | This paper describes three aspects of uncertainty in geographical information systems (GIS) and remote sensing. First, the positional uncertainty of an area object in a GIS is discussed as a function of positional uncertainties of line segments and boundary line features. Second, the thematic uncertainty of a classified remote sensing image is described using the probability vectors from a maximum likelihood classification. Third, the "S-band" model is used to quantify uncertainties after combining GIS and remote sensing data. |
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