I am pleased to report that I have successfully defended my doctoral thesis titled “Interactive Remote-Visualisation for Large Displays”.

In this work, we investigated methods for interactive remote-visualisation for large high-resolution displays, while also contributing to Molecular Visualisation. The major challenges included the large resolution and unique hardware setup of the large displays. The first requires a high bandwidth, which is typically not available, and the unique setup requires an adaptable system.

The projection system of the VISUS Powerwall. (Photo: Florian Frieß)

During this thesis, we created an adaptable system that is built on low latency hardware-based video encoding and decoding. This system can be used to share the full resolution content between large displays and offers additional tele-conference capabilities, e.g. remote talks. It was regularly used for the Lecture Series of the SFB/Transregio 161. Consequently, this system allows users to collaborate between two sites that use different display walls with only a minimal delay.

The Lecture Series with a talk given at Stuttgart. The tiled display shows the speaker’s slides captured from the laptop on the left and the 4K video stream from site Konstanz on the right. Konstanz receives the slides and a 4K video stream from site Stuttgart, while communication between the sites is established by bidirectional audio streams. (Photo: SFB-TRR 161)
An example of the screen sharing as displayed on the tiled display in Stuttgart: Konstanz is sharing the content of their large high-resolution display. Additionally a 4K video stream and bidirectional audio streams allow users to talk with each other while investigating the visualisation shared. (Photo: Florian Frieß)

To address the bandwidth limitations, we have developed several methods, which aim to reduce the required bandwidth and the end-to-end latency while still offering high image quality. The aim of these methods is to reduce the image quality and therefore the required bandwidth in regions that are not currently of interest to the users, while those that are of interest remain at a high quality. One example would be the foveated encoding where the gaze of the users are tracked and the quality of the video encoding is adapted based on this information.

I want to thank everyone I had the pleasure to work with, especially my supervisor Thomas Ertl. Finally, I thank the DFG for funding this research within the project INF of the SFB-TRR 161.

Interactive Remote-Visualisation for Large Displays

Florian Frieß was a PhD student at the Visualization Research Centre of the University of Stuttgart, working on the SFB-TRR 161 project INF (Collaboration Infrastructure). His main research areas was remote visualisation on large displays. He is now with ADVANTEST working on SoC Test Systems.

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