Interactive Remote Exploration of Massive Cityscapes
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Date
2009
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
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.
Description
@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}
}