Video compression remote transmission system for feeding back coarse quantization reconstructed frames

Abstract

The invention discloses a video compression remote transmission system for feeding back coarse quantization reconstructed frames, comprising an information source and an information sink. The information source comprises an information source video encoder, a forward direction transmission transmitter and a reverse direction feedback receiver, wherein the forward direction transmission transmitter and the reverse direction feedback receiver are both in connection with the information source video encoder. The information sink comprises an information sink video decoder, a forward direction transmission receiver, and a reverse direction feedback transmitter, wherein the forward direction transmission receiver and the reverse direction feedback transmitter are both in connection with the information sink video decoder. The forward direction transmission transmitter is in connection with the forward direction transmission receiver; the reverse direction feedback transmitter is in connection with the reverse direction feedback receiver. The video compression remote transmission system feeds back reconstructed video frame information of a remote video decoder on a reverse direction channel, allowing local video decoder reconstructed frames in a local video encoder to be simultaneous with remote video decoder reconstructed frames; the coarse quantization of a transmission data rate is conveniently reduced, and a coarse quantization method is employed for reconstructed frame feedback to reduce a required data rate, thereby reducing the requirement for a decoder operation speed.

Description

technical field [0001] The present invention relates to the technical field of video compression transmission system, in particular to a method of feeding back coarse quantized reconstruction frames from a remote video decoder to a local video compression encoder, so as to improve the subjective and objective quality of remote decoded video sequences, and at the same time enhance Feedback of anti-channel interference ability of video compression remote transmission system Video compression remote transmission system of coarse quantization reconstruction frame. Background technique [0002] Video communication in bandwidth-constrained and interference-prone channels requires both robust bit error resistance and high compression performance. In order to obtain a high compression ratio, most of the existing video codecs adopt the scheme of inter-frame prediction motion compensation to effectively reduce the temporal redundancy, then reduce the spatial redundancy through spatial...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of preventing bit error spread and decoding video quality degradation caused by the asynchronous reconstruction frame of the local decoder and the reconstruction frame of the remote video decoder, the present invention provides a video compression remote transmission system that feeds back coarse quantization reconstruction frames, Feedback the reconstructed video frame information of the remote video decoder on the reverse channel, so that the reconstructed frame of the local decoder in the local video compression encoder is synchronized with the reconstructed frame of the remote video decoder; using simple coarse quantization to reduce the transmission data rate, Reconstruction frame feedback adopts a coarse quantization method to reduce the required data rate and reduce the requirement for decoder operation speed

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