CHAART Leishmaniasis in Brazil: SPARK

Leishmaniasis in Brazil: SPARK

The kernel-based spatial reclassification (SPARK) algorithm used in this study was based on the work of Barnsley and Barr (1996). The input to their algorithm is a (landcover) classification and it outputs a reclassified image determined from the adjacency matrices of the input seeds. Since the reclassification method uses the spatial distribution of classes to determine the output class, SPARK is a texture algorithm, though not a texture measure, like variance. For this study the algorithm was made iterative and seed adjacency matrices (the class means) were allowed to drift until the matrices stabilized.

Reference

Barnsley, M. J. and S. L. Barr. 1996. Inferring urban land use from satellite sensor images using kernal-based spatial reclassification. Photogrammetric Engineering and Remote Sensing 62(8):949-958.

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Last updated: 6 May 1999