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Multi-user 360-degree video stream server-side bit rate adaptive transmission method and system

An adaptive transmission and server technology, applied in the field of video communication, can solve problems such as inability to obtain user viewing experience

Active Publication Date: 2020-06-02
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 bit rate adaptive transmission method and system
  • Multi-user 360-degree video stream server-side bit rate adaptive transmission method and system
  • Multi-user 360-degree video stream server-side bit rate adaptive transmission method and system

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Embodiment Construction

[0072] 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.

[0073] An embodiment of the present invention provides a multi-user 360-degree video stream server-side self-adaptive transmission method based on the visual probability distribution of video frame space slices. include:

[0074] At the user end, the network conditions of each user end and user viewing information are fed back to the server in real time, and the video stream version assigned to the current user is downloaded from the server;

[0075] On the server side, according to the user’s vi...

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Abstract

The invention provides a multi-user 360-degree video stream server-side code rate self-adaptive transmission method, which comprises the following steps of feeding back network conditions and user watching information of each user-side to a server in real time at the user-side, and downloading a video stream version distributed to a current user from the server; at the server side, predicting the viewing viewpoint change of the user in real time according to the user viewing information uploaded by the user side, calculating the video frame space slice visual probability, and calculating the probability that each space slice is viewed by the user through the real-time viewing viewpoint of the user; then, in combination with the network conditions of the users and the probability that the spatial slices are watched by the users, distributing an appropriate video stream code rate version to each user. Meanwhile, the invention provides a multi-user 360-degree video stream server-side code rate self-adaptive transmission system. According to the invention, the bandwidth utilization rate of 360-degree video stream transmission is improved, and better video service quality is provided for users.

Description

technical field [0001] The present invention relates to a method in the technical field of video communication, in particular to a multi-user 360-degree video stream server-side code rate adaptive transmission method and system based on the visual probability distribution of video frame slices. Background technique [0002] With the widespread application of virtual reality (VR) in medical, education, culture, security and other fields and the popularity of head-mounted devices, 360-degree video, a new type of video that can bring users the ultimate immersive experience and high degree of freedom The media form is gradually becoming a hotspot for scientific research and mobile applications. 360-degree video is usually captured by an omnidirectional camera, and its content is a scene on a spherical surface centered on the camera. Users can change the angle of view arbitrarily while watching 360-degree video, so as to obtain a personalized viewing experience. However, the tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/238H04N21/258H04N21/262H04N21/442H04N21/81H04N21/845
CPCH04N21/23805H04N21/25866H04N21/262H04N21/44218H04N21/44227H04N21/816H04N21/845
Inventor 邹君妮阚诺文李成林熊红凯
Owner SHANGHAI JIAO TONG UNIV
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