Tile-based Streaming of 8K Omnidirectional Video: Subjective and Objective QoE Evaluation

Raimund Schatz (Vortragende:r), Anatoliy Zabrovskiy, Christian Timmerer

Publikation: Beitrag in Buch oder TagungsbandVortrag mit Beitrag in TagungsbandBegutachtung

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 user´s viewport while quality outside the user´s 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 user´s 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.
OriginalspracheEnglisch
Titel2019 Eleventh International Conference on Quality of Multimedia Experience (QoMEX)
Seitenumfang6
DOIs
PublikationsstatusVeröffentlicht - 2019
Veranstaltung11th International Conference on Quality of Multimedia Experience (QoMEX 2019) -
Dauer: 5 Juni 20197 Juni 2019

Konferenz

Konferenz11th International Conference on Quality of Multimedia Experience (QoMEX 2019)
Zeitraum5/06/197/06/19

Research Field

  • Ehemaliges Research Field - Experience Measurement

Schlagwörter

  • Omnidirectional Video
  • Tile-based Streaming
  • Subjective Testing
  • Objective Metrics
  • Quality of Experience

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