Abstract
A majority of the collaborative systems today are still in 2D. This paper highlights several issues and challenges in extending support to 3D collaborative workspaces. In particular, we focus on collaborative visualization systems that support shared 3D virtual workspaces. Several features unique to 3D collaborative visualization systems can be identified. For example, the number of participants in a session is usually relatively small; the data sets and the amount of data transferred in a session are typically large; and because each participant may be located anywhere within the 3D virtual workspace, each participant may have his own viewpoint or perspective. These properties help constrain and shape the design of 3D collaborative visualization systems. This paper presents two related 3D collaborative visualization systems called CSpray and PET SLUG, and discusses the particular issues and challenges shared by other 3D collaborative visualization systems. We provide a road map from the insights developed from our research, to the development of 3D collaborative visualization.
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