Publicaties
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Three Time-Scales In An Extended Bonhoeffer–Van Der Pol Oscillator Universiteit Hasselt
We consider an extended three-dimensional Bonhoeffer-van der Pol oscillator which generalises the planar FitzHugh-Nagumo model from mathematical neuroscience, and which was recently studied by Sekikawa et al. and by Freire and Gallas. Focussing on a parameter regime which has hitherto been neglected, and in which the governing equations evolve on three distinct time-scales, we propose a reduction to a model problem that was formulated by Krupa ...
Sampling in transform domain for improved QoE of 3D frame-compatible video coding Universiteit Gent
3D frame-compatible formats are considered a promising solution to 3D distribution due to their compatibility to existing systems. However, since sub-sampling is applied in order to pack the left and right views into a single frame, the Quality of Experience (QoE) has been a major concern. Existing methods in the related literature make use of low-pass filtering to halve the original samples, leaving room for further QoE improvement. In this ...
Objective and subjective QoE evaluation for adaptive point cloud streaming Universiteit Gent
Volumetric media has the potential to provide the six degrees of freedom (6DoF) required by truly immersive media. However, achieving 6DoF requires ultra-high bandwidth transmissions, which real-world wide area networks cannot provide today. Therefore, recent efforts have started to target efficient delivery of volumetric media, using a combination of compression and adaptive streaming techniques. It remains, however, unclear how the effects of ...
Efficient, QoE aware delivery of 360° videos on VR headsets over mobile links Universiteit Gent
Virtual reality headsets have been in a great demand in the past years due to the immersive experience it can now provide to the users. An immersive experience of high quality, however, requires a high bandwidth connection. The latest generation of these headsets support wireless connectivity and rely on a battery to power the headset. With advancements in 5G technology, soon these headsets would be able to connect to the network directly. To ...
Towards a new ITU-T recommendation for subjective methods evaluating gaming QoE Universiteit Gent
This paper reports on activities in Study Group 12 of the International Telecommunication Union (ITU-T SG12) to define a new Recommendation on subjective evaluation methods for gaming Quality of Experience (QoE). It first resumes the structure and content of the current draft which has been proposed to ITU-T SG12 in September 2014 and then critically discusses potential gaming content and evaluation methods for inclusion into the upcoming ...
A smartphone agent for QoE evaluation and user classification over mobile networks Universiteit Gent
The continuous growth of mobile users and bandwidth-consuming applications and the shortage of radio resources put a serious challenge on how to efficiently exploit existing networks and contemporary improve Quality of Experience. One of the most relevant problem for network operators is thus to find an explicit relationship between QoS and QoE, for the purpose of maximizing the latter while saving precious resources. In order to accomplish this ...