End-to-End Multi-User 360-Degree Video Delivery Using Users' Fixation Points

Okamoto, Tsubasa; Ishioka, Takumasa; Fukui, Tatsuya; Tsugami, Ryouhei; Fujiwara, Toshihito; Narikawa, Satoshi; Fujihashi, Takuya; Saruwatari, Shunsuke; Watanabe, Takashi

doi:https://doi.org/10.1109/ACCESS.2024.3353812

End-to-End Multi-User 360-Degree Video Delivery Using Users' Fixation Points

Okamoto, Tsubasa; Ishioka, Takumasa; Fukui, Tatsuya et al.

IEEE Access, 2024, 12, 9151-9161

Number of Access:982（2025-09-16 17:05 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/94590

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Title	End-to-End Multi-User 360-Degree Video Delivery Using Users' Fixation Points
Creator	CreatorName Okamoto, Tsubasa
	CreatorName Ishioka, Takumasa
	CreatorName Fukui, Tatsuya
	CreatorName Tsugami, Ryouhei
	CreatorName Fujiwara, Toshihito
	CreatorName Narikawa, Satoshi
	NRID 1000010785520 1000010785520 ORCID 0000-0002-6960-0122 0000-0002-6960-0122 researchmap permalink T-Fujihashi T-Fujihashi Scopus Author ID 55440476600 55440476600 CreatorName Fujihashi, Takuya
	NRID 1000050507811 1000050507811 ORCID 0000-0002-1625-5521 0000-0002-1625-5521 researchmap permalink 7000000880 7000000880 Scopus Author ID 8355704500 8355704500 CreatorName Saruwatari, Shunsuke
	NRID 1000090201201 1000090201201 ORCID 0000-0002-3227-9048 0000-0002-3227-9048 researchmap permalink wtrm200902 wtrm200902 Scopus Author ID 55640512600 55640512600 CreatorName Watanabe, Takashi
Subject	dual fisheye
	hybrid multicast and unicast
	Virtual reality (VR)
Description	Okamoto T., Ishioka T., Fukui T., et al. End-to-End Multi-User 360-Degree Video Delivery Using Users' Fixation Points. IEEE Access 12, 9151 (2024); https://doi.org/10.1109/ACCESS.2024.3353812.
Abstract	Viewport-based 360-degree video delivery is a typical method to reduce video traffic for virtual reality (VR) applications. However, viewport-based solutions cause key issues in multi-user VR applications, including high video traffic due to redundant video transmission across multiple headset users and quality degradation due to viewport transitions. These problems occur in both camera-to-server and server-to-user video transmissions. In this study, we propose a 360-degree video delivery scheme for multi-user VR applications. To overcome the above issues, the proposed approach includes appropriate quality and transmission control for camera-to-server and server-to-user video transmissions. The camera extracts the estimated potential region from the dual fisheye video. The server controls recompression at the server to follow the viewport transition and hybrid unicast and multicast tile delivery to avoid redundant transmissions. Evaluations using 360-degree video and corresponding fixation points from multiple users show that the proposed scheme prevents redundant transmissions across multiple headset users and provides better viewport quality for each user under the same video traffic. For example, the proposed scheme reduces video traffic by up to 36.4% compared to the existing viewport-based 360-degree video delivery scheme for ten headset users.
Publisher	Institute of Electrical and Electronics Engineers Inc.
Source Title	IEEE Access
Volume (Issue)	12
Page	9151-9161
Date of Issued	2024-01-22
Language	English
Handle URL	https://hdl.handle.net/11094/94590
eISSN	21693536
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1109/ACCESS.2024.3353812
Access Rights	open access
CopyRight	This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	IEEE Access. 2024, 12, p. 9151-9161
DC.title	End-to-End Multi-User 360-Degree Video Delivery Using Users' Fixation Points
DC.creator	Okamoto, Tsubasa
	Ishioka, Takumasa
	Fukui, Tatsuya
	Tsugami, Ryouhei
	Fujiwara, Toshihito
	Narikawa, Satoshi
	Fujihashi, Takuya
	Saruwatari, Shunsuke
	Watanabe, Takashi
DC.publisher	Institute of Electrical and Electronics Engineers Inc.
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2024-01-22
DC.identifier	https://doi.org/10.1109/ACCESS.2024.3353812
DC.subject	dual fisheye
	hybrid multicast and unicast
	Virtual reality (VR)
DC.description	Okamoto T., Ishioka T., Fukui T., et al. End-to-End Multi-User 360-Degree Video Delivery Using Users' Fixation Points. IEEE Access 12, 9151 (2024); https://doi.org/10.1109/ACCESS.2024.3353812.
DCTERMS.abstract	Viewport-based 360-degree video delivery is a typical method to reduce video traffic for virtual reality (VR) applications. However, viewport-based solutions cause key issues in multi-user VR applications, including high video traffic due to redundant video transmission across multiple headset users and quality degradation due to viewport transitions. These problems occur in both camera-to-server and server-to-user video transmissions. In this study, we propose a 360-degree video delivery scheme for multi-user VR applications. To overcome the above issues, the proposed approach includes appropriate quality and transmission control for camera-to-server and server-to-user video transmissions. The camera extracts the estimated potential region from the dual fisheye video. The server controls recompression at the server to follow the viewport transition and hybrid unicast and multicast tile delivery to avoid redundant transmissions. Evaluations using 360-degree video and corresponding fixation points from multiple users show that the proposed scheme prevents redundant transmissions across multiple headset users and provides better viewport quality for each user under the same video traffic. For example, the proposed scheme reduces video traffic by up to 36.4% compared to the existing viewport-based 360-degree video delivery scheme for ten headset users.
DC.rights	This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
DC.format	94590
citation_title	End-to-End Multi-User 360-Degree Video Delivery Using Users' Fixation Points
citation_author	Okamoto, Tsubasa
	Ishioka, Takumasa
	Fukui, Tatsuya
	Tsugami, Ryouhei
	Fujiwara, Toshihito
	Narikawa, Satoshi
	Fujihashi, Takuya
	Saruwatari, Shunsuke
	Watanabe, Takashi
citation_publisher	Institute of Electrical and Electronics Engineers Inc.
citation_language	English
citation_date	2024-01-22
citation_journal_title	IEEE Access
citation_volume	12
citation_firstpage	9151
citation_lastpage	9161
citation_doi	https://doi.org/10.1109/ACCESS.2024.3353812
citation_public_url	https://hdl.handle.net/11094/94590

End-to-End Multi-User 360-Degree Video Delivery Using Users' Fixation Points

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