Comparison of roving-window and search-window techniques for characterising landscape morphometry

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Carlos Henrique Grohmann


Neighbourhood analysis in a Geographical Information System (GIS) calculates the value of a given raster cell from the values of its neighboring cells. Common operations include filtering (high-pass, low-pass, etc) and smoothing (mean, mode) of data, operations that can be done by means of roving-windows or search-windows. Digital terrain analysis (or geomorphometry) relies on neighbourhood operations to calculate morphometric variables such as slope, aspect, local relief or surface roughness (among many others) at scales ranging from local (i.e., single landforms) to regional (entire mountain chains).

The intent of this paper is to compare both techniques in a multi-scale study of geomorphometry, in central-eastern Brazil.



Computer Sciences, Earth Sciences, Geographic Information Sciences, Geography, Geomorphology, Physical Sciences and Mathematics, Social and Behavioral Sciences, Spatial Science, Theory and Algorithms


Morphometric analysis, GRASS-GIS, Moving-window, Roving-window


Published: 2017-10-31 11:38


CC BY Attribution 4.0 International

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