Title :
Smart visible sets for networked virtual environments
Author :
Moreira, FÁbio O. ; Comba, JoÃo L D ; Freitas, Carla M d s
Author_Institution :
Instituto de Informatica, Univ. Fed. do Rio Grande do Sul, Porto Alegre, Brazil
Abstract :
The real-time visualization of complex virtual environments across a network is a challenging problem in computer graphics. The use of pre-computed visibility associated to regions in space, such as in the potentially visible sets (PVS) approach, may reduce the amount of data sent across the network. However, PVS for a region may still be complex, and further partitions are necessary. In this paper we introduce the concept of a smart visible set (SVS), which corresponds to (1) a partition of PVS information into dynamic subsets that take into account client position, and (2) an ordering mechanism that enumerates these dynamic sets using a visual importance metric. Results comparing the SVS and PVS approach are presented.
Keywords :
client-server systems; computer games; computer networks; rendering (computer graphics); virtual reality; visibility; client position; computer graphics; dynamic sets; dynamic subsets; networked complex virtual environments; ordering mechanism; potentially visible sets; pre-computed visibility; real-time visualization; smart visible set; visual importance metric; Bandwidth; Computer graphics; Data visualization; Delay; Focusing; Geometry; Hardware; Organizing; Spatial coherence; Virtual environment;
Conference_Titel :
Computer Graphics and Image Processing, 2002. Proceedings. XV Brazilian Symposium on
Print_ISBN :
0-7695-1846-X
DOI :
10.1109/SIBGRA.2002.1167168