A Tile-Based Solution Using Cubemap for Viewport-Adaptive 360-degree Video Delivery

Huyen T. T. TRAN; Duc V. NGUYEN; Nam PHAM NGOC; Truong Cong THANG

doi:10.1587/transcom.2018ANP0009

A Tile-Based Solution Using Cubemap for Viewport-Adaptive 360-degree Video Delivery

Huyen T. T. TRAN, Duc V. NGUYEN, Nam PHAM NGOC, Truong Cong THANG

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360-degree video delivery in Virtual Reality is very challenging due to the fact that 360-degree videos require much higher bandwidth than conventional videos. To overcome this problem, viewport-adaptive streaming has been introduced. In this study, we propose a new adaptation method for tiling-based viewport-adaptive streaming of 360-degree videos. For content preparation, the Cubemap projection format is used, where faces or parts of a face are encoded as tiles. Also, the problem is formulated as an optimization problem, in which each visible tile is weighted based on how that tile overlaps with the viewport. To solve the problem, an approximation algorithm is proposed in this study. An evaluation of the proposed method and reference methods is carried out under different tiling schemes and bandwidths. Experiments show that the Cubemap format with tiling provides a lot of benefits in terms of storage, viewport quality across different viewing directions and bandwidths, and tolerance to prediction errors.

Publication: IEICE TRANSACTIONS on Communications Vol.E102-B No.7 pp.1292-1300

Publication Date: 2019/07/01

Publicized: 2019/01/22

Online ISSN: 1745-1345

DOI: 10.1587/transcom.2018ANP0009

Type of Manuscript: Special Section PAPER (Special Section on Communication Technologies and Service Qualities in Various Access Networks)

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Authors

Huyen T. T. TRAN
  the University of Aizu
Duc V. NGUYEN
  the University of Aizu
Nam PHAM NGOC
  Hanoi University of Science and Technology
Truong Cong THANG
  the University of Aizu

Keyword

virtual reality, 360-degree video, viewport-adaptive streaming

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Huyen T. T. TRAN, Duc V. NGUYEN, Nam PHAM NGOC, Truong Cong THANG, "A Tile-Based Solution Using Cubemap for Viewport-Adaptive 360-degree Video Delivery" in IEICE TRANSACTIONS on Communications, vol. E102-B, no. 7, pp. 1292-1300, July 2019, doi: 10.1587/transcom.2018ANP0009.
Abstract: 360-degree video delivery in Virtual Reality is very challenging due to the fact that 360-degree videos require much higher bandwidth than conventional videos. To overcome this problem, viewport-adaptive streaming has been introduced. In this study, we propose a new adaptation method for tiling-based viewport-adaptive streaming of 360-degree videos. For content preparation, the Cubemap projection format is used, where faces or parts of a face are encoded as tiles. Also, the problem is formulated as an optimization problem, in which each visible tile is weighted based on how that tile overlaps with the viewport. To solve the problem, an approximation algorithm is proposed in this study. An evaluation of the proposed method and reference methods is carried out under different tiling schemes and bandwidths. Experiments show that the Cubemap format with tiling provides a lot of benefits in terms of storage, viewport quality across different viewing directions and bandwidths, and tolerance to prediction errors.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2018ANP0009/_p

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@ARTICLE{e102-b_7_1292,
author={Huyen T. T. TRAN, Duc V. NGUYEN, Nam PHAM NGOC, Truong Cong THANG, },
journal={IEICE TRANSACTIONS on Communications},
title={A Tile-Based Solution Using Cubemap for Viewport-Adaptive 360-degree Video Delivery},
year={2019},
volume={E102-B},
number={7},
pages={1292-1300},
abstract={360-degree video delivery in Virtual Reality is very challenging due to the fact that 360-degree videos require much higher bandwidth than conventional videos. To overcome this problem, viewport-adaptive streaming has been introduced. In this study, we propose a new adaptation method for tiling-based viewport-adaptive streaming of 360-degree videos. For content preparation, the Cubemap projection format is used, where faces or parts of a face are encoded as tiles. Also, the problem is formulated as an optimization problem, in which each visible tile is weighted based on how that tile overlaps with the viewport. To solve the problem, an approximation algorithm is proposed in this study. An evaluation of the proposed method and reference methods is carried out under different tiling schemes and bandwidths. Experiments show that the Cubemap format with tiling provides a lot of benefits in terms of storage, viewport quality across different viewing directions and bandwidths, and tolerance to prediction errors.},
keywords={},
doi={10.1587/transcom.2018ANP0009},
ISSN={1745-1345},
month={July},}

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TY - JOUR
TI - A Tile-Based Solution Using Cubemap for Viewport-Adaptive 360-degree Video Delivery
T2 - IEICE TRANSACTIONS on Communications
SP - 1292
EP - 1300
AU - Huyen T. T. TRAN
AU - Duc V. NGUYEN
AU - Nam PHAM NGOC
AU - Truong Cong THANG
PY - 2019
DO - 10.1587/transcom.2018ANP0009
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E102-B
IS - 7
JA - IEICE TRANSACTIONS on Communications
Y1 - July 2019
AB - 360-degree video delivery in Virtual Reality is very challenging due to the fact that 360-degree videos require much higher bandwidth than conventional videos. To overcome this problem, viewport-adaptive streaming has been introduced. In this study, we propose a new adaptation method for tiling-based viewport-adaptive streaming of 360-degree videos. For content preparation, the Cubemap projection format is used, where faces or parts of a face are encoded as tiles. Also, the problem is formulated as an optimization problem, in which each visible tile is weighted based on how that tile overlaps with the viewport. To solve the problem, an approximation algorithm is proposed in this study. An evaluation of the proposed method and reference methods is carried out under different tiling schemes and bandwidths. Experiments show that the Cubemap format with tiling provides a lot of benefits in terms of storage, viewport quality across different viewing directions and bandwidths, and tolerance to prediction errors.
ER -