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A method for computation of surface roughness of digital elevation model terrains via multiscale analysis

In this paper, an algorithm to compute surface roughness of digital elevation model (DEM) terrains via multiscale analysis is proposed. The algorithm employs the lifting scheme to generate multiscale DEMs. At each scale, the areas of pixels that are modified are computed. Granulometric analysis is e...

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Main Authors:	Mohd Hani, Ahmad Fadzil, Sathyamoorthy, Dinesh, Asirvadam , Vijanth Sagayan
Format:	Article
Published:	Elsevier 2010
Subjects:	GA Mathematical geography. Cartography TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://www.elsevier.com/wps/find/journaldescription.cws_home/398/description#description http://eprints.utp.edu.my/3811/
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spelling	my.utp.eprints.38112014-04-02T01:01:21Z A method for computation of surface roughness of digital elevation model terrains via multiscale analysis Mohd Hani, Ahmad Fadzil Sathyamoorthy, Dinesh Asirvadam , Vijanth Sagayan GA Mathematical geography. Cartography TK Electrical engineering. Electronics Nuclear engineering In this paper, an algorithm to compute surface roughness of digital elevation model (DEM) terrains via multiscale analysis is proposed. The algorithm employs the lifting scheme to generate multiscale DEMs. At each scale, the areas of pixels that are modified are computed. Granulometric analysis is employed to compute the average area of curvature regions in the terrain, and the average roughness of the terrain due the distribution of curvature regions. The selected case studies of the algorithm implementation demonstrated that the proposed algorithm provides a surface roughness parameter that is realistic with respect to the amplitudes and frequencies of the terrain, invariant with respect to rotation and translation, and has intuitive meaning. The algorithm allows for a good quantification of a region’s convexity/concavity over varying scales, distinguishing between shallow and deep incisions of valleys and ridges of the terrain, and hence, provides an accurate surface roughness parameter. Elsevier 2010 Article PeerReviewed http://www.elsevier.com/wps/find/journaldescription.cws_home/398/description#description Mohd Hani, Ahmad Fadzil and Sathyamoorthy, Dinesh and Asirvadam , Vijanth Sagayan (2010) A method for computation of surface roughness of digital elevation model terrains via multiscale analysis. Computers & Geosciences . ISSN 0098-3004 http://eprints.utp.edu.my/3811/
institution	Universiti Teknologi Petronas
building	UTP Resource Centre
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Petronas
content_source	UTP Institutional Repository
url_provider	http://eprints.utp.edu.my/
topic	GA Mathematical geography. Cartography TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	GA Mathematical geography. Cartography TK Electrical engineering. Electronics Nuclear engineering Mohd Hani, Ahmad Fadzil Sathyamoorthy, Dinesh Asirvadam , Vijanth Sagayan A method for computation of surface roughness of digital elevation model terrains via multiscale analysis
description	In this paper, an algorithm to compute surface roughness of digital elevation model (DEM) terrains via multiscale analysis is proposed. The algorithm employs the lifting scheme to generate multiscale DEMs. At each scale, the areas of pixels that are modified are computed. Granulometric analysis is employed to compute the average area of curvature regions in the terrain, and the average roughness of the terrain due the distribution of curvature regions. The selected case studies of the algorithm implementation demonstrated that the proposed algorithm provides a surface roughness parameter that is realistic with respect to the amplitudes and frequencies of the terrain, invariant with respect to rotation and translation, and has intuitive meaning. The algorithm allows for a good quantification of a region’s convexity/concavity over varying scales, distinguishing between shallow and deep incisions of valleys and ridges of the terrain, and hence, provides an accurate surface roughness parameter.
format	Article
author	Mohd Hani, Ahmad Fadzil Sathyamoorthy, Dinesh Asirvadam , Vijanth Sagayan
author_facet	Mohd Hani, Ahmad Fadzil Sathyamoorthy, Dinesh Asirvadam , Vijanth Sagayan
author_sort	Mohd Hani, Ahmad Fadzil
title	A method for computation of surface roughness of digital elevation model terrains via multiscale analysis
title_short	A method for computation of surface roughness of digital elevation model terrains via multiscale analysis
title_full	A method for computation of surface roughness of digital elevation model terrains via multiscale analysis
title_fullStr	A method for computation of surface roughness of digital elevation model terrains via multiscale analysis
title_full_unstemmed	A method for computation of surface roughness of digital elevation model terrains via multiscale analysis
title_sort	method for computation of surface roughness of digital elevation model terrains via multiscale analysis
publisher	Elsevier
publishDate	2010
url	http://www.elsevier.com/wps/find/journaldescription.cws_home/398/description#description http://eprints.utp.edu.my/3811/
_version_	1738655297286701056
score	13.211869

A method for computation of surface roughness of digital elevation model terrains via multiscale analysis

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