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360° video quality assessment based on saliency-guided viewport extraction

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Abstract

Due to the distortion of projection generated during the production of \(360^{\circ }\) video, most quality assessment algorithms used for 2D video have the problem of performance degradation. In this paper, we propose a full-reference \(360^{\circ }\) video quality assessment method, utilizing saliency to guide viewport extraction to eliminate the projection distortion. To be more specific, we first predict the visual saliency of each frame with a \(360^{\circ }\) saliency prediction network and then select the viewport that optimally represents the video frame through the optimal viewport positioning module (OVPM). Furthermore, we propose the attention-based three-dimensional convolutional neural network (3D CNN) quality assessment network to evaluate the video quality, in which 3D CNN convolution and attention modules can better capture the quality degradation of distorted viewports. Experimental results show that our method achieves superior performance in \(360^{\circ }\) video quality assessment tasks.

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Data availability

The datasets generated and/or analyzed during the current study are available from the corresponding author on reasonable request.

Notes

  1. Available: https://github.com/Samsung/360tools.

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Acknowledgements

This work was supported in part by the NSFC under Grant 62371279, 62171002, 61901252, 62071287, 62020106011, 62371278, and Science and Technology Commission of Shanghai Municipality under Grant 22ZR1424300.

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Authors and Affiliations

  1. School of Communication and Information Engineering, Shanghai University, Shanghai, 200444, China

    Fanxi Yang, Chao Yang, Ping An & Xinpeng Huang

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  1. Fanxi Yang
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Contributions

Fanxi Yang: contributed to the conception of the study, performed the experiment, and wrote the manuscript text Chao Yang: contributed significantly to the analysis and wrote the manuscript text Ping An: helped perform the analysis with constructive discussions, and reviewed the manuscript. Xinpeng Huang: helped perform the analysis with constructive discussions, and reviewed the manuscript.

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Correspondence to Chao Yang.

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Communicated by Q. Shen.

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Yang, F., Yang, C., An, P. et al. 360° video quality assessment based on saliency-guided viewport extraction. Multimedia Systems 30, 89 (2024). https://doi.org/10.1007/s00530-024-01285-0

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