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dc.contributor.authorAndujar, C.en_US
dc.contributor.authorBrunet, P.en_US
dc.contributor.authorChica, A.en_US
dc.contributor.authorNavazo, I.en_US
dc.date.accessioned2015-02-23T09:47:13Z
dc.date.available2015-02-23T09:47:13Z
dc.date.issued2010en_US
dc.identifier.issn1467-8659en_US
dc.identifier.urihttp://dx.doi.org/10.1111/j.1467-8659.2010.01757.xen_US
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.en_US
dc.publisherThe Eurographics Association and Blackwell Publishing Ltden_US
dc.titleVisualization of Large-Scale Urban Models through Multi-Level Relief Impostorsen_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume29en_US
dc.description.number8en_US
dc.identifier.doi10.1111/j.1467-8659.2010.01757.xen_US
dc.identifier.pages2456-2468en_US


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