Title虚拟现实视频传输架构和关键技术
Other TitlesArchitecture and Key Technologies of Virtual Reality Video Transmission and Streaming
Authors郭宗明
班怡璇
谢澜
Affiliation北京大学,北京,100871
KeywordsVR视频
视点自适应传输
非均匀映射传输
分块传输
视点预测
用户质量优化
VR video
viewport adaptation streaming
asymmetric projection streaming
tile-based streaming
viewport prediction
QoE optimization
Issue Date2017
Publisher中兴通讯技术
Citation中兴通讯技术. 2017, 23(6), 19-23.
Abstract介绍了虚拟现实(VR)视频传输架构,提出了两种传输方式:全景传输和视点传输.全景传输可提供多角度质量均匀的图像,但存在高码率和带宽浪费问题;视点传送仅传输视点范围内图像,可减少码率浪费,但存在头部运动延迟问题.提出的视点自适应传输技术、视点预测方法,可以较好地实现低码率、高质量的VR视频传输.
In this paper, a main framework of virtual reality (VR) video transmission is introduced, and two schemes are also proposed: panorama transmission and viewport transmission. The panorama transmission can provide 360°symmetric image with high bit-rate and bandwidth wasting; the viewport transmission only transmits a part of images so as to reduce bit-rate wasting, but can cause head movement delay. In this paper, viewport-adaptive streaming and viewport prediction technologies are introduced, which enable high quality service of VR video streaming.
URIhttp://hdl.handle.net/20.500.11897/499107
ISSN1009-6868
DOI10.3969/j.issn.1009-6868.2017.06.005
Appears in Collections:待认领

Files in This Work
There are no files associated with this item.

Web of Science®



Checked on Last Week

Scopus®



Checked on Current Time

百度学术™



Checked on Current Time

Google Scholar™





License: See PKU IR operational policies.