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dc.contributor.authorAndújar Gran, Carlos Antonio
dc.contributor.authorBoo, J
dc.contributor.authorBrunet Crosa, Pere
dc.contributor.authorFairén González, Marta
dc.contributor.authorNavazo Álvaro, Isabel
dc.contributor.authorVázquez Alcocer, Pere Pau
dc.contributor.authorVinacua Pla, Álvaro
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics
dc.date.accessioned2011-03-28T10:00:37Z
dc.date.available2011-03-28T10:00:37Z
dc.date.created2007-07
dc.date.issued2007-07
dc.identifier.citationAndújar, C. [et al.]. Omni-directional relief impostors. "Computer graphics forum", Juliol 2007, vol. 26, núm. 3, p. 553-560.
dc.identifier.issn0167-7055
dc.identifier.urihttp://hdl.handle.net/2117/12104
dc.description.abstractRelief impostors have been proposed as a compact and high-quality representation for high-frequency detail in 3D models. In this paper we propose an algorithm to represent a complex object through the combination of a reduced set of relief maps. These relief maps can be rendered with very few artifacts and no apparent deformation from any view direction. We present an efficient algorithm to optimize the set of viewing planes supporting the relief maps, and an image-space metric to select a sufficient subset of relief maps for each view direction. Selected maps (typically three) are rendered based on the well-known ray-height-field intersection algorithm implemented on the GPU. We discuss several strategies to merge overlapping relief maps while minimizing sampling artifacts and to reduce extra texture requirements. We show that our representation can maintain the geometry and the silhouette of a large class of complex shapes with no limit in the viewing direction. Since the rendering cost is output sensitive, our representation can be used to build a hierarchical model of a 3D scene.
dc.format.extent8 p.
dc.language.isoeng
dc.publisherNorth Holland
dc.subjectÀrees temàtiques de la UPC::Informàtica::Infografia
dc.subject.lcshThree dimensional imaging
dc.subject.otherComputer graphic equipment
dc.subject.otherImage representation
dc.subject.otherImage sampling
dc.subject.otherImage texture
dc.subject.otherRendering (Computer graphics)
dc.subject.otherSolid modelling
dc.titleOmni-directional 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.1467-8659.2007.01078.x
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac795930
dc.description.versionPostprint (published version)
local.citation.authorAndújar, C.; Boo, J.; Brunet, P.; Fairen, M.; Navazo, I.; Vazquez, P.; Vinacua, A.
local.citation.publicationNameComputer graphics forum
local.citation.volume26
local.citation.number3
local.citation.startingPage553
local.citation.endingPage560


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