Jean-Franccedil;ois Parrot Author

Research Article Open Access

Slope-Independent Landscape Roughness Attribute Provided by Measurement of Local Contour Line Density

Author(s):

Veronica Ochoa-Tejeda and Jean-François Parrot

Various digital treatments have been proposed to describe the digital elevation model (DEM) surface roughness, depending on the geomorphologic purpose. Some of these treatments use the drainage network pattern directly or combine the former binary information with DEM data. Others take into account local characteristics of the DEM’s surface, such as the deviation of the perpendicular issued from each pixel or the computation of the surface curvature. The aim of the present study is to propose new geomorphic algorithms based on contour line density to calculate the DEM surface roughness. The contour line density is calculated within a moving window of n × n pixels, and the contour lines are extracted according to a given range of hypsometric inter... view more»

DOI: 10.4172/2327-4581.1000159

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