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Multi-user 360-degree video stream server-side self-adaptive distribution method and system

A distribution method and server technology, applied in the field of video communication, can solve problems such as inability to obtain user viewing experience

Active Publication Date: 2020-06-05
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When applied to a multi-user environment, the above method cannot achieve an optimal user viewing experience due to competition among users for bandwidth

Method used

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  • Multi-user 360-degree video stream server-side self-adaptive distribution method and system
  • Multi-user 360-degree video stream server-side self-adaptive distribution method and system
  • Multi-user 360-degree video stream server-side self-adaptive distribution method and system

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Embodiment Construction

[0045] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0046] refer to figure 1 Shown, a kind of process that is applicable to the embodiment of multi-user 360-degree video stream server-side code rate adaptive allocation method, the specific implementation includes the following steps:

[0047] 1. Dynamic adaptive streaming media segmentation and encoding at the server

[0048] The segmentation and encoding of the multi-user 360-degree video stream at the server end are analyzed as examples below. In this embodiment, it is assumed that the network b...

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Abstract

The invention provides a self-adaptive distribution method and system of a multi-user 360 DEG video streaming server-side code rate. The method comprises the following steps: partitioning a 360-DEG video stream into a series of video stream time slices by combining a dynamic self-adaptive streaming media technology at a server, further partitioning one time slice into multiple space slices, encoding each space slice into multiple versions with different code rates and caching the same. The joint code rate-distortion performance difference between each video time slice and the space slice, thenetwork connection situation of each user-side, prediction watching view distance, the head movement state and the video on demand probability distribution are taken into consideration; the video space slice code rate version required to be downloaded by each user is determined by adopting the code rate self-adaptive distribution algorithm at the server-side, thereby finally realizing the maximization of the multiuser total video watching experience. Through the method provided by the invention, the bandwidth utilization rate of the 360-DEG video stream transmission is improved, and the bettervideo quality of service is provided for the user.

Description

technical field [0001] The present invention relates to a method in the technical field of video communication, and in particular, relates to a method and system for adaptively allocating code rates on a multi-user 360-degree video stream server side. Background technique [0002] 360-degree video is an application of virtual reality technology, which uses a full range of cameras to capture scenes in every direction and integrates these scenes into one picture to provide users with an immersive experience. During use, the user will wear a head-mounted display to watch videos, and as the head moves, the viewing angle of the user will also change. Compared with traditional video, in order to achieve the same user viewing clarity, 360-degree video streaming often requires 4-6 times the transmission bandwidth. [0003] In order to transmit 360-degree video streams more effectively, the server can adopt a strategy of only transmitting video content within the viewing range of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/2662H04N21/2343H04N21/262H04N21/442
CPCH04N21/23439H04N21/26216H04N21/2662H04N21/44209H04N21/44213
Inventor 邹君妮阚诺文唐可欣李成林熊红凯
Owner SHANGHAI JIAO TONG UNIV
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