Topographic map visualization from adaptively compressed textures

Raster-based topographic maps are commonly used in geoinformation systems to overlay geographic entities on top of digital terrain models. Using compressed texture formats for encoding topographic maps allows reducing latency times while visualizing large geographic datasets. Topographic maps encomp...

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Detalles Bibliográficos
Autor: Andújar Gran, Carlos Antonio|||0000-0002-8480-4713
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/15705
Acceso en línea:https://hdl.handle.net/2117/15705
https://dx.doi.org/10.1111/j.1467-8659.2009.01682.x
Access Level:acceso abierto
Palabra clave:Topographic maps
3D Graphics and realism
Texture
Mapes topogràfics
Àrees temàtiques de la UPC::Informàtica::Infografia
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spelling Topographic map visualization from adaptively compressed texturesAndújar Gran, Carlos Antonio|||0000-0002-8480-4713Topographic maps3D Graphics and realismTextureMapes topogràficsÀrees temàtiques de la UPC::Informàtica::InfografiaRaster-based topographic maps are commonly used in geoinformation systems to overlay geographic entities on top of digital terrain models. Using compressed texture formats for encoding topographic maps allows reducing latency times while visualizing large geographic datasets. Topographic maps encompass high-frequency content with large uniform regions, making current compressed texture formats inappropriate for encoding them. In this paper we present a method for locally-adaptive compression of topographic maps. Key elements include a Hilbert scan to maximize spatial coherence, efficient encoding of homogeneous image regions through arbitrarily-sized texel runs, a cumulative run-length encoding supporting fast random-access, and a compression algorithm supporting lossless and lossy compression. Our scheme can be easily implemented on current programmable graphics hardware allowing real-time GPU decompression and rendering of bilinear-filtered topographic maps.North Holland20102010-01-0120122012-04-04journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/15705https://dx.doi.org/10.1111/j.1467-8659.2009.01682.xreponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/157052026-05-27T15:37:01Z
dc.title.none.fl_str_mv Topographic map visualization from adaptively compressed textures
title Topographic map visualization from adaptively compressed textures
spellingShingle Topographic map visualization from adaptively compressed textures
Andújar Gran, Carlos Antonio|||0000-0002-8480-4713
Topographic maps
3D Graphics and realism
Texture
Mapes topogràfics
Àrees temàtiques de la UPC::Informàtica::Infografia
title_short Topographic map visualization from adaptively compressed textures
title_full Topographic map visualization from adaptively compressed textures
title_fullStr Topographic map visualization from adaptively compressed textures
title_full_unstemmed Topographic map visualization from adaptively compressed textures
title_sort Topographic map visualization from adaptively compressed textures
dc.creator.none.fl_str_mv Andújar Gran, Carlos Antonio|||0000-0002-8480-4713
author Andújar Gran, Carlos Antonio|||0000-0002-8480-4713
author_facet Andújar Gran, Carlos Antonio|||0000-0002-8480-4713
author_role author
dc.subject.none.fl_str_mv Topographic maps
3D Graphics and realism
Texture
Mapes topogràfics
Àrees temàtiques de la UPC::Informàtica::Infografia
topic Topographic maps
3D Graphics and realism
Texture
Mapes topogràfics
Àrees temàtiques de la UPC::Informàtica::Infografia
description Raster-based topographic maps are commonly used in geoinformation systems to overlay geographic entities on top of digital terrain models. Using compressed texture formats for encoding topographic maps allows reducing latency times while visualizing large geographic datasets. Topographic maps encompass high-frequency content with large uniform regions, making current compressed texture formats inappropriate for encoding them. In this paper we present a method for locally-adaptive compression of topographic maps. Key elements include a Hilbert scan to maximize spatial coherence, efficient encoding of homogeneous image regions through arbitrarily-sized texel runs, a cumulative run-length encoding supporting fast random-access, and a compression algorithm supporting lossless and lossy compression. Our scheme can be easily implemented on current programmable graphics hardware allowing real-time GPU decompression and rendering of bilinear-filtered topographic maps.
publishDate 2010
dc.date.none.fl_str_mv 2010
2010-01-01
2012
2012-04-04
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/15705
https://dx.doi.org/10.1111/j.1467-8659.2009.01682.x
url https://hdl.handle.net/2117/15705
https://dx.doi.org/10.1111/j.1467-8659.2009.01682.x
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv North Holland
publisher.none.fl_str_mv North Holland
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869406315732795392
score 15.300724

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