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dc.contributor.authorVázquez Alcocer, Pere Pau
dc.contributor.authorFeixas, Miquel
dc.contributor.authorSbert Cassasayas, Mateu
dc.contributor.authorHeidrich, Wolfgang
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics
dc.identifier.citationVazquez, P. [et al.]. Image-based modeling using viewpoint entropy. A: Computer Graphics International. "Computer Graphics International 2002". Bradford: 2002.
dc.description.abstractWe present a new method to automatically determine the correct camera placement positions in order to obtain a minimal set of views for Image-Based Rendering. The viewpoints should cover all visible polygons with an adequate quality, so that we sample the polygons at enough rate. This allows to avoid the excessive redundancy of the data existing in several other approaches. The localisation of interesting viewpoints is performed with the aid on an information theory-based measure, dubbed viewpoint entropy. This measure can be used to determine the amount of information seen from a viewpoint. We have also developed a greedy algorithm that aims to minimise the number of images need to represent a scene. In contrast to other approaches, our system uses a special preprocess for textures to avoid artifacts appearing in partially occluded textured polygons. Therefore no visible detail of these images is lost.
dc.format.extent1 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Informàtica::Infografia
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament de la imatge i del senyal vídeo
dc.subject.lcshEntropy (Information theory)
dc.subject.lcshRendering (Computer graphics)
dc.subject.otherImage-based modeling
dc.subject.otherImage-based rendering
dc.subject.otherViewpoint selection
dc.titleImage-based modeling using viewpoint entropy
dc.typeConference report
dc.subject.lemacImatges -- Processament
dc.subject.lemacEntropia (Teoria de la informació)
dc.contributor.groupUniversitat Politècnica de Catalunya. MOVING - Grup de Recerca en Modelatge, Interacció i Visualització en Realitat Virtual
dc.rights.accessOpen Access
dc.description.versionPostprint (author’s final draft)
upcommons.citation.authorVazquez, P.; Feixas, M.; Sbert, M.; Heidrich, W.
upcommons.citation.contributorComputer Graphics International
upcommons.citation.publicationNameComputer Graphics International 2002

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