Reduced Depth and Visual Hulls of Complex 3D Scenes

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dc.contributor.authorBogomjakov, Alexanderen_US
dc.contributor.authorGotsman, Craigen_US
dc.date.accessioned2015-02-21T16:18:25Z
dc.date.available2015-02-21T16:18:25Z
dc.date.issued2008en_US
dc.description.abstractDepth and visual hulls are useful for quick reconstruction and rendering of a 3D object based on a number of reference views. However, for many scenes, especially multi-object, these hulls may contain significant artifacts known as phantom geometry. In depth hulls the phantom geometry appears behind the scene objects in regions occluded from all the reference views. In visual hulls the phantom geometry may also appear in front of the objects because there is not enough information to unambiguously imply the object positions.In this work we identify which parts of the depth and visual hull might constitute phantom geometry. We define the notion of reduced depth hull and reduced visual hull as the parts of the corresponding hull that are phantom-free. We analyze the role of the depth information in identification of the phantom geometry. Based on this, we provide an algorithm for rendering the reduced depth hull at interactive frame-rates and suggest an approach for rendering the reduced visual hull. The rendering algorithms take advantage of modern GPU programming techniques.Our techniques bypass explicit reconstruction of the hulls, rendering the reduced depth or visual hull directly from the reference views.en_US
dc.description.number2en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume27en_US
dc.identifier.doi10.1111/j.1467-8659.2008.01114.xen_US
dc.identifier.issn1467-8659en_US
dc.identifier.pages175-182en_US
dc.identifier.urihttps://doi.org/10.1111/j.1467-8659.2008.01114.xen_US
dc.publisherThe Eurographics Association and Blackwell Publishing Ltden_US
dc.titleReduced Depth and Visual Hulls of Complex 3D Scenesen_US
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