The Performance of Fuzzy Operators on Fuzzy Classification of Urban Land Covers
MetadataShow full item record
The research discussed in this paper evaluates the performance of selected fuzzy operators (e.g., maximum, minimum, algebraic sum, algebraic product, and gamma operators) for integrating fuzzy membership values associated with multiple spectral bands for mapping the complex spatial mixture that characterises urban land covers. Accordingly, a supervised classification approach based on the fuzzy c-means algorithm was implemented to generate fuzzy memberships of selected bands (1, 3, 4 and 7) of a Landsat-7 ETM image that provided the highest spectral separability among different urban land covers (e.g., forest, grassland, urban, and dense urban) as determined by a transformed divergence analysis. Maps resulting from the application of each fuzzy operator were evaluated against field data. The results show that the fuzzy algebraic product and the fuzzy gamma operators (0.1 to 0.8) are optimal for integrating the fuzzy memberships of selected urban land covers on multi-band data sets, as they exhibited a Khat statistic of 75 percent as compared to a Khat statistic of 59 percent, 64 percent and 71 percent for maximum, minimum and fuzzy algebraic sum, respectively.
Showing items related by title, author, creator and subject.
Fractals and fuzzy sets for modelling the heterogenity and spatial complexity of urban landscapes using multiscale remote sensing dataIslam, Zahurul (2004)This research presents models for the analysis of textural and contextual information content of multiscale remote sensing to select an appropriate scale for the correct interpretation and mapping of heterogeneous urban ...
Exploratory growth analysis of a megacity through different spatial metrics: a case study on Dhaka, Bangladesh (1960-2005)Ahmed, Sohel; Bramley, Glen; Dewan, Ashraf (2012)Recent advances and greater availability of geographic information systems (GIS) and remote-sensing (RS) technologies and data have opened wider possibilities for tackling many challenging issues of urban planning and ...
Shouri, A.; Datta, Sambit (2009)The market is an essential component of urban form. Contemporary shopping malls can benefit from the inherent efficiencies of traditional markets. This paper addresses the development of sustainable models of market ...