Multiple description coding high-quality edge reconstruction method based on spatial downsampling

Abstract

The invention provides a multiple description coding high-quality edge reconstruction method based on spatial downsampling, which comprises the following steps: making a data set: selecting a video, dividing the video into two descriptions through spatial downsampling, coding and decoding the video under the setting of a quantization parameter QP value, and taking the decoded video and a corresponding original video as a training set; and training a SD-VSRnet network: taking every five frames of the video as an input of the network, sequentially performing feature extraction, high-frequency detail recovery and pixel rearrangement, then performing jump connection with an input intermediate frame to obtain reconstructed video frames, and performing frame-by-frame reconstruction to obtain a final reconstructed video, thereby realizing training of the SD-VSRnet network. According to the method provided by the invention, a multiple description coding high-quality edge reconstruction data set suitable for space downsampling is made, in addition, a video super-resolution neural network is adopted to separately test four QP values, and the edge decoding video reconstruction quality of different compression degrees can be effectively improved.

Description

technical field [0001] The invention relates to the field of video coding and decoding, in particular to a method for high-quality edge reconstruction of multiple description coding based on spatial downsampling. Background technique [0002] With the advancement of the fifth-generation mobile communication network and the popularization of Gigabit WIFI, the Internet and wireless channels have become the main transmission channels for digital video. However, there are still phenomena such as network congestion, channel interference, random bit errors and burst errors of wireless channels in the Internet. Therefore, it is very important to study video coding with error-tolerant coding ability. [0003] In the field of error-tolerant coding, multiple description video coding (Multiple Description Coding, MDC) is a kind of error-tolerant coding method that can effectively solve the problems of video quality degradation caused by information loss, bit errors and delays in wirel...

AI Technical Summary

Problems solved by technology

However, there are still phenomena such as network congestion, channel interference, random bit errors and burst errors of wireless channels in the Internet.

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