Visualization Viewpoints Dynamic Sharing of Large-Scale Visualization__________

Visualization is a research tool that computational scientists use for qualitative exploration, hypothesis verification, and result presentation. Driven by needs for large user groups to collaborate across geographical distances (see the “A Driving Application— The Terascale Supernova Initiative ” sidebar for detailed user needs), visualization must now also serve as an effective means to share concrete data as well as abstract ideas over the Internet. Yet there is simply no expeditious and practical way for users collaborating in this wide area to share large visualizations in a dynamic fashion. In many cases, the only practical mechanism available for sharing visualization is to use a Web server to exchange precomputed images or videos. Without havin