360-degree panoramic video coding method based on motion attention model

Abstract

The present invention relates to a 360-degree panoramic video coding method based on a motion attention model, comprising: extracting a motion vector to obtain a motion vector field, and calculating the reliability of each motion vector; according to the reliability, performing reliability weighted filtering pre-processing to reduce noise; performing global motion compensation on the motion vector field; constructing a motion attention model to obtain motion attention of a coded block; and according to the motion attention of the coded block, self-adaptively allocating a codeword. The present invention has the beneficial effects that: the calculation of the motion attention is performed on the basis of the motion vector field, and does not require additional calculation complexity, reducing the impact of noise, and comprehensively considering the strength of the motion vector, the contrast ratio of a space-domain motion vector and the contrast ratio of a time-domain motion vector to construct the motion attention model, allocating a relatively large number of codewords to a region of motion interest, allocating relatively few codewords to an unchanging video region so as to reduce coded codewords of unused regions while improving the video quality of the scene of motion interest.

Description

technical field [0001] The invention relates to the technical field of 360-degree panoramic video coding, in particular to a 360-degree panoramic video coding method based on a motion attention model. Background technique [0002] The traditional live broadcast method can bring real-time game enjoyment to the audience. After adding the 360-degree panoramic live broadcast technology, it can not only create a more on-site watching atmosphere, but also break through the limitation of space seats and greatly broaden the audience. The development of 360-degree panoramic live broadcast technology can not only be used for event-based live broadcasts such as concerts and sports events, but can also be used in the medical field, real estate on-site viewing and sales, etc. Under normal circumstances, it is an outdoor live broadcast. In this environment, the network at the acquisition end itself is extremely unstable, which affects the quality of users watching 360-degree panoramic li...

AI Technical Summary

Problems solved by technology

[0003] As users have higher and higher requirements for the authenticity of virtual reality, the current common video coding scheme can no longer meet the requirements of reducing the compression bit rate of 360-degree panoramic video while ensuring the same subjective quality

Images