Mr. Yufeng Zhou Profile

Yufeng Zhou

at Ningbo Univ

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Proceedings Article | 18 November 2019 Paper

Viewport-adaptive 360-degree video coding using non-uniform tile for virtual reality communication

Yufeng Zhou, Ken Chen, Mei Yu, Hao Jiang, Gangyi Jiang

Proceedings Volume 11187, 1118716 (2019) https://doi.org/10.1117/12.2538695

KEYWORDS: Video, Video coding, Virtual reality, Head-mounted displays, Visualization

Read Abstract +

360° video can provide users with immersive experience by showing the omnidirectional perspective, which is getting more attractive to consumers. However, 360° video tends to have higher resolution, resulting in increased bandwidth requirements for transmission. The characteristic of head-mounted displays (HMD) provides a new approach to reducing the cost of streaming 360° video bandwidth, which can encode 360° video by considering user’s orientation. In this paper, we propose a novel 360° video coding method based on the characteristics of Equi-rectangular Projection (ERP) and combined with user-oriented behavior. Specifically, a non-uniform tile method according is designed to the principle of ERP, which also meets the behavioral of users viewing 360° video. Additionally, appropriate coding parameters are set according to the positions of different tiles to reduce the redundancy introduced by oversampling to improve the coding efficiency. Experimental results show the proposed method can reduce the bandwidth requirement of streaming 360° video while ensuring the consistent visual quality, significantly.

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