A heuristic for the maximum value region problem in raster space
2011 (English)In: International Journal of Geographical Information Science, ISSN 1365-8816, E-ISSN 1365-8824, Vol. 25, no 7, 1097-1116 p.Article in journal (Refereed) Published
From a single-attribute raster layer in which each cell is assigned a numerical value, a connected set of a specified number of cells that has the maximum (or minimum) total value is selected. This is a highly common decision problem in the context of raster-based geographic information systems (GIS) and seems general enough to deserve inclusion in the standard functionality of such systems. Yet it is a computationally difficult optimization problem, for which no efficient exact solution method has been found. This article presents a new dynamic programming-based heuristic method for the problem. Its performance is tested with randomly generated raster layers with various degrees of spatial autocorrelation. Results suggest that the proposed heuristic is a promising alternative to the existing integer programming-based exact method, as it can handle significantly larger raster data with fair accuracy.
Place, publisher, year, edition, pages
Taylor & Francis, 2011. Vol. 25, no 7, 1097-1116 p.
decision-support system, landscape ecology, field-object representation, raster data modeling
IdentifiersURN: urn:nbn:se:kth:diva-48529DOI: 10.1080/13658816.2010.513686ISI: 000295467600004ScopusID: 2-s2.0-79961215661OAI: oai:DiVA.org:kth-48529DiVA: diva2:457969
QC 201111212011-11-212011-11-212016-04-28Bibliographically approved