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Mapping Spatial Thematic Accuracy With Fuzzy Sets

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Abstract:Thematic map accuracy is not spatially homogenous but variable across a landscape. Properly analyzing and representing spatial pattern and degree of thematic map accuracy would provide valuable information for using thematic maps. However, current thematic map accuracy measures (e.g., confusion or error matrix, kappa coefficient of agreement, etc) are inadequate in analyzing the spatial variation of thematic map accuracy. This paper presents a method of mapping spatial accuracy of thematic land-cover map using fuzzy set concept. First, we defined a multi-level agreement between sample pixel sand map-based pixels. Then we formulated a discrete fuzzy set of agreement regarding a particular land-cover type for each pixel on the map using a modified inverse distance weighted approach. We illustrated the method by constructing accuracy maps of several land-cover types for the Mid-,4tlantic Region
Results showed that the method provided valuable information of thematic map accuracy

for both remote sensing /GIS scientists and decision-makers.
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Citation:Tran, L. T., J. D. Wickham, S. T. Jarnagin, and C. G. Knight. Mapping Spatial Thematic Accuracy With Fuzzy Sets. PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING 71(1):29-36, (2005).
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Contact: Chris Siebert - (702) 798-2234 or siebert.christopher@epa.gov
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Division: Environmental Sciences Division
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Branch: Landscape Ecology Branch
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Product Type: Journal
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Published: 01/25/2005
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Downloads:
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Bullet Item Mapping Spatial Thematic Accuracy With Fuzzy Sets
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Related Entries:
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Bullet Item Development of Landscape Indicators for Use in Regional Ecological Risk Assessments
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