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dc.contributor.authorAndújar Gran, Carlos Antonio
dc.contributor.authorBrunet Crosa, Pere
dc.contributor.authorChica Calaf, Antonio
dc.contributor.authorNavazo Álvaro, Isabel
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics
dc.date.accessioned2012-05-17T10:31:11Z
dc.date.created2010-12
dc.date.issued2010-12
dc.identifier.citationAndujar, C. [et al.]. Visualization of large-scale urban models through multi-level relief impostors. "Computer graphics forum", Desembre 2010, vol. 29, núm. 8, p. 2456-2468.
dc.identifier.issn0167-7055
dc.identifier.urihttp://hdl.handle.net/2117/15887
dc.description.abstractIn this paper, we present an efficient approach for the interactive rendering of large-scale urban models, which can be integrated seamlessly with virtual globe applications. Our scheme fills the gap between standard approaches for distant views of digital terrains and the polygonal models required for close-up views. Our work is oriented towards city models with real photographic textures of the building facades. At the heart of our approach is a multi-resolution tree of the scene defining multi-level relief impostors. Key ingredients of our approach include the pre-computation of a small set of zenithal and oblique relief maps that capture the geometry and appearance of the buildings inside each node, a rendering algorithm combining relief mapping with projective texture mapping which uses only a small subset of the pre-computed relief maps, and the use of wavelet compression to simulate two additional levels of the tree. Our scheme runs considerably faster than polygonal-based approaches while producing images with higher quality than competing relief-mapping techniques. We show both analytically and empirically that multi-level relief impostors are suitable for interactive navigation through large urban models.
dc.format.extent13 p.
dc.language.isoeng
dc.publisherNorth Holland
dc.subjectÀrees temàtiques de la UPC::Informàtica::Infografia
dc.subject.lcshRendering (Computer graphics)
dc.subject.lcshThree dimensional imaging
dc.subject.otherUrban rendering
dc.subject.otherRelief mapping
dc.subject.otherLarge city visualization
dc.titleVisualization of large-scale urban models through multi-level relief impostors
dc.typeArticle
dc.subject.lemacInfografia tridimensional
dc.contributor.groupUniversitat Politècnica de Catalunya. MOVING - Grup de Recerca en Modelatge, Interacció i Visualització en Realitat Virtual
dc.identifier.doi10.1111/j.1467-8659.2010.01757.x
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac4464751
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorAndujar, C.; Brunet, P.; Chica, A.; Navazo, I.
local.citation.publicationNameComputer graphics forum
local.citation.volume29
local.citation.number8
local.citation.startingPage2456
local.citation.endingPage2468


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