Information measures for terrain visualization
dc.contributor.author
dc.date.accessioned
2017-03-14T12:10:06Z
dc.date.available
2017-03-14T12:10:06Z
dc.date.issued
2017-02-01
dc.identifier.issn
0098-3004
dc.identifier.uri
dc.description.abstract
Many quantitative and qualitative studies in geoscience research are based on digital elevation models (DEMs) and 3D surfaces to aid understanding of natural and anthropogenically-influenced topography. As well as their quantitative uses, the visual representation of DEMs can add valuable information for identifying and interpreting topographic features. However, choice of viewpoints and rendering styles may not always be intuitive, especially when terrain data are augmented with digital image texture. In this paper, an information-theoretic framework for object understanding is applied to terrain visualization and terrain view selection. From a visibility channel between a set of viewpoints and the component polygons of a 3D terrain model, we obtain three polygonal information measures. These measures are used to visualize the information associated with each polygon of the terrain model. In order to enhance the perception of the terrain's shape, we explore the effect of combining the calculated information measures with the supplementary digital image texture. From polygonal information, we also introduce a method to select a set of representative views of the terrain model. Finally, we evaluate the behaviour of the proposed techniques using example datasets. A publicly available framework for both the visualization and the view selection of a terrain has been created in order to provide the possibility to analyse any terrain model
dc.description.sponsorship
This work has been founded in part by grant number TIN2010-21089-C03-01, TIN2013-47276-C6-1-R and BES-2011-045252 of Spanish Government, grant number 2014-SGR-1232 of Generalitat de Catalunya (Catalan Government)
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation
info:eu-repo/grantAgreement/MICINN//TIN2010-21089-C03-01/ES/CONTENIDO DIGITAL PARA JUEGOS SERIOS: CREACION, GESTION, RENDERIZADO E INTERACCION/
info:eu-repo/grantAgreement/MINECO//TIN2013-47276-C6-1-R/ES/AVANCES EN CONTENIDOS DIGITALES PARA JUEGOS SERIOS/
dc.relation.isformatof
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.cageo.2016.10.007
dc.relation.ispartof
© Computers and Geosciences, 2017, vol. 99, p. 9-18
dc.relation.ispartofseries
Articles publicats (D-IMA)
dc.rights
Tots els drets reservats
dc.subject
dc.title
Information measures for terrain visualization
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/embargoedAccess
dc.embargo.terms
Cap
dc.date.embargoEndDate
info:eu-repo/date/embargoEnd/2026-01-01
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
026264
dc.contributor.funder
dc.relation.ProjectAcronym