Di Benedetto M., Cignoni P., Ganovelli F., Gobbetti E., Marton F., Scopigno R.
3D Graphics Real time visualization
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.
Source: VAST: International Symposium on Virtual Reality, Archaeology and Intelligent Cultural Heritage, pp. 9–16, MALTA, 22-25 Settembre 2009
@inproceedings{oai:it.cnr:prodotti:183784, title = {Interactive Remote Exploration of Massive Cityscapes}, author = {Di Benedetto M. and Cignoni P. and Ganovelli F. and Gobbetti E. and Marton F. and Scopigno R.}, doi = {10.2312/vast/vast09/009-016}, booktitle = {VAST: International Symposium on Virtual Reality, Archaeology and Intelligent Cultural Heritage, pp. 9–16, MALTA, 22-25 Settembre 2009}, year = {2009} }