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    • VAST09: The 10th International Symposium on Virtual Reality, Archaeology and Intelligent Cultural Heritage
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    Interactive Remote Exploration of Massive Cityscapes

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    Date
    2009
    Author
    Benedetto, Marco Di
    Cignoni, Paolo ORCID
    Ganovelli, Fabio
    Gobbetti, Enrico ORCID
    Marton, Fabio ORCID
    Scopigno, Roberto
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    Abstract
    We focus on developing a simple and efficient unified level-of-detail structure for networked urban model viewers. At the core of our approach is a revisitation of the BlockMap [CDG*07] data structure, originally introduced for encoding coarse representations of blocks of buildings to be used as direction-independent impostors when rendering far-away city blocks. The contribution of this paper is manifold: we extend the BlockMap representation to support sloped surfaces and input-sensitive sampling of color; we introduce a novel sampling strategy for building accurate BlockMaps; we show that BlockMaps can be used as a versatile and robust way to parameterize the visible surface of a highly complex model; we improve the expressiveness of urban models rendering by integrating an ambient occlusion term in the representation and describe an efficient method for computing it; we illustrate the design and implementation of a urban models streaming and visualization system and demonstrate its efficiency when browsing large city models in a limited bandwidth setting.
    BibTeX
    @inproceedings {10.2312:VAST:VAST09:009-016,
    booktitle = {VAST: International Symposium on Virtual Reality, Archaeology and Intelligent Cultural Heritage},
    editor = {Kurt Debattista and Cinzia Perlingieri and Denis Pitzalis and Sandro Spina},
    title = {{Interactive Remote Exploration of Massive Cityscapes}},
    author = {Benedetto, Marco Di and Cignoni, Paolo and Ganovelli, Fabio and Gobbetti, Enrico and Marton, Fabio and Scopigno, Roberto},
    year = {2009},
    publisher = {The Eurographics Association},
    ISSN = {1811-864X},
    ISBN = {978-3-905674-18-7},
    DOI = {10.2312/VAST/VAST09/009-016}
    }
    URI
    http://dx.doi.org/10.2312/VAST/VAST09/009-016
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    • VAST09: The 10th International Symposium on Virtual Reality, Archaeology and Intelligent Cultural Heritage

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