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Open Access
Metadata-Based Quality-Estimation Model for Tile-Based Omnidirectional Video Streaming

Yuichiro URATA, Masanori KOIKE, Kazuhisa YAMAGISHI, Noritsugu EGI

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Summary :

In this paper, a metadata-based quality-estimation model is proposed for tile-based omnidirectional video streaming services, aiming to realize quality monitoring during service provision. In the tile-based omnidirectional video (ODV) streaming services, the ODV is divided into tiles, and the high-quality tiles and the low-quality tiles are distributed in accordance with the user's viewing direction. When the user changes the viewing direction, the user temporarily watches video with the low-quality tiles. In addition, the longer the time (delay time) until the high-quality tile for the new viewing direction is downloaded, the longer the viewing time of video with the low-quality tile, and thus the delay time affects quality. From the above, the video quality of the low-quality tiles and the delay time significantly impact quality, and these factors need to be considered in the quality-estimation model. We develop quality-estimation models by extending the conventional quality-estimation models for 2D adaptive streaming. We also show that the quality-estimation model using the bitrate, resolution, and frame rate of high- and low-quality tiles and that the delay time has sufficient estimation accuracy based on the results of subjective quality evaluation experiments.

Publication
IEICE TRANSACTIONS on Communications Vol.E106-B No.5 pp.478-488
Publication Date
2023/05/01
Publicized
2022/11/15
Online ISSN
1745-1345
DOI
10.1587/transcom.2022EBP3109
Type of Manuscript
PAPER
Category
Multimedia Systems for Communications

Authors

Yuichiro URATA
  NTT Corporation
Masanori KOIKE
  NTT Corporation
Kazuhisa YAMAGISHI
  NTT Corporation
Noritsugu EGI
  NTT Corporation

Keyword