IEICE TRANSACTIONS on Communications
Suppression in Quality Variation for 360-Degree Tile-Based Video Streaming
Summary :
For 360-degree video streaming, a 360-degree video is divided into segments temporally (i.e. some seconds). Each segment consists of multiple video tiles spatially. In this paper, we propose a tile quality selection method for tile-based video streaming. The proposed method suppresses the spatial quality variation within the viewport caused by a change of the viewport region due to user head movement. In the proposed method, the client checks whether the difference in quality level between the viewport and the region around the viewport is large, and if so, reduces it when assigning quality levels. Simulation results indicate that when the segment length is long, quality variation can be suppressed without significantly reducing the perceived video quality (in terms of bitrate). In particular, the quality variation within the viewport can be greatly suppressed. Furthermore, we verify that the proposed method is effective in reducing quality variation within the viewport and across segments without changing the total download size.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E104-B No.6 pp.616-623
- Publication Date
- 2021/06/01
- Publicized
- 2020/12/17
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.2020EBP3115
- Type of Manuscript
- PAPER
- Category
- Network
Authors
Arisa SEKINE
Sophia University
Masaki BANDAI
Sophia University
Keyword
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Arisa SEKINE, Masaki BANDAI, "Suppression in Quality Variation for 360-Degree Tile-Based Video Streaming" in IEICE TRANSACTIONS on Communications,
vol. E104-B, no. 6, pp. 616-623, June 2021, doi: 10.1587/transcom.2020EBP3115.
Abstract: For 360-degree video streaming, a 360-degree video is divided into segments temporally (i.e. some seconds). Each segment consists of multiple video tiles spatially. In this paper, we propose a tile quality selection method for tile-based video streaming. The proposed method suppresses the spatial quality variation within the viewport caused by a change of the viewport region due to user head movement. In the proposed method, the client checks whether the difference in quality level between the viewport and the region around the viewport is large, and if so, reduces it when assigning quality levels. Simulation results indicate that when the segment length is long, quality variation can be suppressed without significantly reducing the perceived video quality (in terms of bitrate). In particular, the quality variation within the viewport can be greatly suppressed. Furthermore, we verify that the proposed method is effective in reducing quality variation within the viewport and across segments without changing the total download size.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2020EBP3115/_p
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@ARTICLE{e104-b_6_616,
author={Arisa SEKINE, Masaki BANDAI, },
journal={IEICE TRANSACTIONS on Communications},
title={Suppression in Quality Variation for 360-Degree Tile-Based Video Streaming},
year={2021},
volume={E104-B},
number={6},
pages={616-623},
abstract={For 360-degree video streaming, a 360-degree video is divided into segments temporally (i.e. some seconds). Each segment consists of multiple video tiles spatially. In this paper, we propose a tile quality selection method for tile-based video streaming. The proposed method suppresses the spatial quality variation within the viewport caused by a change of the viewport region due to user head movement. In the proposed method, the client checks whether the difference in quality level between the viewport and the region around the viewport is large, and if so, reduces it when assigning quality levels. Simulation results indicate that when the segment length is long, quality variation can be suppressed without significantly reducing the perceived video quality (in terms of bitrate). In particular, the quality variation within the viewport can be greatly suppressed. Furthermore, we verify that the proposed method is effective in reducing quality variation within the viewport and across segments without changing the total download size.},
keywords={},
doi={10.1587/transcom.2020EBP3115},
ISSN={1745-1345},
month={June},}
Copy
TY - JOUR
TI - Suppression in Quality Variation for 360-Degree Tile-Based Video Streaming
T2 - IEICE TRANSACTIONS on Communications
SP - 616
EP - 623
AU - Arisa SEKINE
AU - Masaki BANDAI
PY - 2021
DO - 10.1587/transcom.2020EBP3115
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E104-B
IS - 6
JA - IEICE TRANSACTIONS on Communications
Y1 - June 2021
AB - For 360-degree video streaming, a 360-degree video is divided into segments temporally (i.e. some seconds). Each segment consists of multiple video tiles spatially. In this paper, we propose a tile quality selection method for tile-based video streaming. The proposed method suppresses the spatial quality variation within the viewport caused by a change of the viewport region due to user head movement. In the proposed method, the client checks whether the difference in quality level between the viewport and the region around the viewport is large, and if so, reduces it when assigning quality levels. Simulation results indicate that when the segment length is long, quality variation can be suppressed without significantly reducing the perceived video quality (in terms of bitrate). In particular, the quality variation within the viewport can be greatly suppressed. Furthermore, we verify that the proposed method is effective in reducing quality variation within the viewport and across segments without changing the total download size.
ER -
English
