Talks and Poster Presentations (with Proceedings-Entry):

R. Schatz, A. Zabrovskiy, C. Timmerer:
"Tile-based Streaming of 8K Omnidirectional Video: Subjective and Objective QoE Evaluation";
Talk: 11th International Conference on Quality of Multimedia Experience (QoMEX 2019), Berlin, Germany; 06-05-2019 - 06-07-2019; in: "2019 Eleventh International Conference on Quality of Multimedia Experience (QoMEX)", IEEE, (2019), ISBN: 978-1-5386-8212-8; 6 pages.



English abstract:
Omnidirectional video (ODV) streaming applications
are becoming increasingly popular. They enable a highly
immersive experience as the user can freely choose her/his field
of view within the 360-degree environment. Current deployments
are fairly simple but viewport-agnostic which inevitably results
in high storage/bandwidth requirements and low Quality of
Experience (QoE). A promising solution is referred to as tilebased
streaming which allows to have higher quality within the
userīs viewport while quality outside the userīs viewport could be
lower. However, empirical QoE assessment studies in this domain
are still rare. Thus, this paper investigates the impact of different
tile-based streaming approaches and configurations on the QoE of
ODV. We present the results of a lab-based subjective evaluation
in which participants evaluated 8K omnidirectional video QoE as
influenced by different (i) tile-based streaming approaches (full
vs. partial delivery), (ii) content types (static vs. moving camera),
and (iii) tile encoding quality levels determined by different
quantization parameters. Our experimental setup is characterized
by high reproducibility since relevant media delivery aspects
(including the userīs head movements and dynamic tile quality
adaptation) are already rendered into the respective processed
video sequences. Additionally, we performed a complementary
objective evaluation of the different test sequences focusing on
bandwidth efficiency and objective quality metrics. The results
are presented in this paper and discussed in detail which confirm
that tile-based streaming of ODV improves visual quality while
reducing bandwidth requirements.

Keywords:
Omnidirectional Video, Tile-based Streaming, Subjective Testing, Objective Metrics, Quality of Experience


"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1109/QoMEX.2019.8743230


Created from the Publication Database of the AIT Austrian Institute of Technology.