Adaptive robust video coding method based on millimeter wave system

Abstract

The invention discloses an adaptive robust video coding method based on a millimeter wave system. The method includes the following steps: performing tensor decomposition significance extraction on avideo source, and allocating video contents to an encoder in combination with the code rate allocation; and controlling the encoder to operate through scene modeling, specifically including the following situations: if a line-of-sight path and a relay path are unobstructed, adopting an HEVC encoder, and determining the number of coding paths of an adaptive multiple description encoder by combiningthe number of communication paths and the path channel state, and further implementing the video transmission of the line-of-sight path and / or the relay path; and if the line-of-sight path and / or therelay path are / is unstable, adopting an SHVC encoder, determining the number of the coding paths of the adaptive multiple description encoder by combining the number of paths and the path channel state, and further implementing the video transmission of two or three of the relay path, the line-of-sight path and a first-order reflection path through Fountain codes. According to the scheme of the invention, the basic video service of a user under harsh network conditions can be guaranteed, and the video quality can be improved as much as possible under relatively stable network conditions.

Description

Technical field [0001] The present invention relates to the technical field of video processing, and more specifically to an adaptive robust video coding method based on a millimeter wave system. Background technique [0002] Millimeter wave communication provides a wealth of bandwidth for high-definition video services with large amounts of data. However, due to its natural physical characteristics, frequent network switching problems and transmission path obstruction problems pose new challenges to the need for real-time and continuous video services. [0003] Existing video coding schemes either ignore the impact of robust coding on coding efficiency while pursuing robustness, or they have insufficient tolerance for network switching. The occlusion of people and objects in the communication path will cause the long-term interruption of the communication link, and the short-term occlusion of the user's movement and objects passing through the communication path will also cause sh...

AI Technical Summary

Problems solved by technology

[0002] Millimeter wave communication provides abundant bandwidth for high-definition video services with a large amount of data. However, due to its natural physical characteristics, frequent network switching and transmission path occlusion problems pose new challenges to real-time and continuous video services.

[0003] Existing video coding schemes either ignore the impact of robust coding on coding efficiency while pursuing robustness, or are not tolerant enough to network switching

The occlusion of people and objects in the communication path will cause long-term interruption of the communication link, and the short-term occlusion of the user's movement and objects passing through the communication path will also cause short-term communication interruption and reconnection problems

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