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Issue No.02 - March/April (2008 vol.14)
pp: 302-312
We present a novel approach for latency-tolerant delivery of visualization and rendering results where client-side frame rate display performance is independent of source dataset size, image size, visualization technique or rendering complexity. Our approach delivers pre-rendered, multiresolution images to a remote user as they navigate through different viewpoints, visualization or rendering parameters. We employ demand-driven tiled, multiresolution image streaming and prefetching to efficiently utilize available bandwidth while providing the maximum resolution user can perceive from a given viewpoint. Since image data is the only input to our system, our approach is generally applicable to all visualization and graphics rendering applications capable of generating image files in an ordered fashion. In our implementation, a normal web server provides on-demand images to a remote custom client application, which uses client-pull to obtain and cache only those images required to fulfill the interaction needs. The main contributions of this work are: (1) an architecture for latency-tolerant, remote delivery of precomputed imagery suitable for use with any visualization or rendering application capable of producing images in an ordered fashion; (2) a performance study showing the impact of diverse network environments and different tunable system parameters on end-to-end system performance in terms of deliverable frames per second.
Visualization systems and software, Evolving Internet applications, Distributed/network graphics
Jerry Chen, Ilmi Yoon, Wes Bethel, "Interactive, Internet Delivery of Visualization via Structured Prerendered Multiresolution Imagery", IEEE Transactions on Visualization & Computer Graphics, vol.14, no. 2, pp. 302-312, March/April 2008, doi:10.1109/TVCG.2007.70428
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