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

アクセス数:982件（2025-09-16 17:08 集計）

固定URL: https://hdl.handle.net/11094/94590

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タイトル	End-to-End Multi-User 360-Degree Video Delivery Using Users' Fixation Points
著者	著者名 Okamoto, Tsubasa
	著者名 Ishioka, Takumasa
	著者名 Fukui, Tatsuya
	著者名 Tsugami, Ryouhei
	著者名 Fujiwara, Toshihito
	著者名 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 著者名 Fujihashi, Takuya
	NRID 1000050507811 1000050507811 ORCID 0000-0002-1625-5521 0000-0002-1625-5521 researchmap permalink 7000000880 7000000880 Scopus Author ID 8355704500 8355704500 著者名 Saruwatari, Shunsuke
	NRID 1000090201201 1000090201201 ORCID 0000-0002-3227-9048 0000-0002-3227-9048 researchmap permalink wtrm200902 wtrm200902 Scopus Author ID 55640512600 55640512600 著者名 Watanabe, Takashi
キーワード等	dual fisheye
	hybrid multicast and unicast
	Virtual reality (VR)
内容	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.
抄録	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.
出版者	Institute of Electrical and Electronics Engineers Inc.
収録物名	IEEE Access
巻(号)	12
ページ	9151-9161
刊行年月	2024-01-22
言語	英語
ハンドルURL	https://hdl.handle.net/11094/94590
eISSN	21693536
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1109/ACCESS.2024.3353812
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	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	英語
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	英語
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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