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With the advent of generic remote visualization solutions, accessing
distant graphics resources from the desktop is no longer restricted
to specially tailored applications. However, current solutions still
suffer from poor interactivity due to limited network bandwidth and
high latency. In this paper we present several improvements to our
remote visualization system in order to overcome these drawbacks.
Different image compression schemes are evaluated with regard to
applicability for scientific visualization, showing that image
compression alone cannot guarantee interactive frame rates.
Therefore, we furthermore present different techniques for
alleviating the bandwidth limit, including quality reduction during
user interaction or animations. Latency aspects are addressed by
employing multi-threading for asynchronous compression and utilizing
features of modern programmable graphics adapters for performing the
image compression entirely on the graphics card. The presented ideas
are integrated in our remote visualization system without violating
universality.
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