A Fast FoV-Switching DASH System Based on Tiling Mechanism for Practical Omnidirectional Video Services

Song, Jiarun; Yang, Fuzheng; Zhang, Wei; Zou, Wenjie; Fan, Yuqun; Di, Peiyun

doi:10.1109/tmm.2019.2957976

Cited by 26 publications

(13 citation statements)

References 37 publications

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“…For instance, a great effort in the literature focuses on designing coding and transmission schemes that improve QoE with bandwidth limitations, proposing to provide higher quality to the Field of View (FoV) that corresponds to the area in the HMD where the user is looking at. Thus, the content is partitioned spatially in tiles and temporally in segments, providing multi-quality scenes [45], [46]. In this sense, Muñoz et al [47] proposed a methodology to monitor the quality perceived by users based on the FoV.…”

Section: Assessment Of Audiovisual Quality With 360°videosmentioning

confidence: 99%

“…The selected test conditions cover factors influencing the assessment of audiovisual quality, including the impact of spatial degradations (e.g., coding artifacts), which is commonly done with short sequences [7]. Several other factors influence the overall QoE of the users when watching 360°videos [16], such as immersion [64] or temporal degradations (e.g, transmission degradations [45], latency [98], etc. ), which may require longer sequences to be properly evaluated [58]- [60], and were out of the scope of the test campaign presented in this paper.…”

Section: Subjective Experiments a Test Conditionsmentioning

confidence: 99%

See 1 more Smart Citation

Subjective Evaluation of Visual Quality and Simulator Sickness of Short 360$^\circ$ Videos: ITU-T Rec. P.919

Gutiérrez¹,

Pérez

Orduna

et al. 2022

IEEE Trans. Multimedia

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Recently an impressive development in immersive technologies, such as Augmented Reality (AR), Virtual Reality (VR) and 360°video, has been witnessed. However, methods for quality assessment have not been keeping up. This paper studies quality assessment of 360°video from the cross-lab tests (involving ten laboratories and more than 300 participants) carried out by the Immersive Media Group (IMG) of the Video Quality Experts Group (VQEG). These tests were addressed to assess and validate subjective evaluation methodologies for 360°video. Audiovisual quality, simulator sickness symptoms, and exploration behavior were evaluated with short (from 10 seconds to 30 seconds) 360°sequences. The following factors' influences were also analyzed: assessment methodology, sequence Manuscript received

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Section: Assessment Of Audiovisual Quality With 360°videosmentioning

confidence: 99%

Section: Subjective Experiments a Test Conditionsmentioning

confidence: 99%

Subjective Evaluation of Visual Quality and Simulator Sickness of Short 360$^\circ$ Videos: ITU-T Rec. P.919

Gutiérrez¹,

Pérez

Orduna

et al. 2022

IEEE Trans. Multimedia

View full text Add to dashboard Cite

show abstract

“…The main purpose of the proposed strategy is to provide the client real-time adaptive switching, so the delay to the quality switching is compared with that of the FFS-360DASH system implemented according to [11] and the traditional twotier system implemented according to [4]. In this experiment, three 8K (7680 × 4096) ERP video sequences, namely Kite-Flite, Gaslamp, and Trolley were employed.…”

Section: Comparison Of the Quality Switching Delaymentioning

confidence: 99%

“…Hence, there will exist a delay to the quality switching. To solve this problem, authors in [11] proposed the FFS-360DASH system with a fast-switching strategy by generating multiple IEL (instant EL) segments with a different start time for each encoded EL segment. However, the FFS-360DASH system takes up extra storage resources since multiple derived segments should be stored.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Adaptive Switching Mechanism Towards Viewport-Adaptive Omnidirectional Video Streaming

Yang¹,

Liang²,

Yang³

2021

2021 IEEE International Conference on Multimedia &Amp; Expo Workshops (ICMEW)

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Viewport-adaptive streaming is now a widely used solution for the transmission of omnidirectional video. However, when the user's viewport changes, there will be a delay in switching to high quality video. This delay will significantly affect the user's experience. In this paper, a real-time adaptive switching mechanism was proposed to solve this problem, which can perform video quality switching at any instant. In the proposed real-time adaptive switching mechanism, a technique of Random Access P Frame (RAPF) is proposed, which can serve as the random access to help to achieve the real-time adaptive in practice. In the process of encoding RAPFs, inter prediction encoding method will be used to reduce the size of RAPFs, thereby reducing the bandwidth consumption. The experimental result shows that the proposed mechanism can reduce the delay to the quality switching, while just resulting in a quite small extra bandwidth consumption and negligible quality degradation.

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“…Most of existing VR systems focused on providing this kind of immersive entertainment experience for IoT applications. Generally, the resolution of VR video should be 8K or even higher with a bitrate more than 100Mbps to provide fairly good experience [101]. Streaming VR video at such resolution is usually not a trivial task, especially through the Internet.…”

Section: A Vr For Immersive Entertainmentmentioning

confidence: 99%

Virtual Reality: A Survey of Enabling Technologies and its Applications in IoT

Luo

Chen

et al. 2021

Preprint

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Virtual Reality (VR) has shown great potential to revolutionize the market by providing users immersive experiences with freedom of movement. Compared to traditional video streaming, VR is with ultra high-definition and dynamically changes with users' head and eye movements, which poses significant challenges for the realization of such potential. In this paper, we provide a detailed and systematic survey of enabling technologies of virtual reality and its applications in Internet of Things (IoT). We identify major challenges of virtual reality on system design, view prediction, computation, streaming, and quality of experience evaluation. We discuss each of them by extensively surveying and reviewing related papers in the recent years. We also introduce several use cases of VR for IoT. Last, issues and future research directions are also identified and discussed.

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A Fast FoV-Switching DASH System Based on Tiling Mechanism for Practical Omnidirectional Video Services

Cited by 26 publications

References 37 publications

Subjective Evaluation of Visual Quality and Simulator Sickness of Short 360$^\circ$ Videos: ITU-T Rec. P.919

Subjective Evaluation of Visual Quality and Simulator Sickness of Short 360$^\circ$ Videos: ITU-T Rec. P.919

Real-Time Adaptive Switching Mechanism Towards Viewport-Adaptive Omnidirectional Video Streaming

Virtual Reality: A Survey of Enabling Technologies and its Applications in IoT

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