A Video Compression Remote Transmission System Feedback Coarse Quantization and Reconstruction Frames

Abstract

The invention discloses a video compression remote transmission system that feeds back coarse quantized reconstructed frames, including a source and a sink. The source includes a source video encoder, a forward transmission transmitter and a reverse feedback receiver, and the forward transmission transmitter and the reverse feedback receiver are connected to the source video encoder; the sink includes the sink video decoder, the forward transmission receiver and the reverse feedback transmitter, and the forward transmission receiver and the reverse feedback transmitter are connected to the sink video The decoders are connected; the forward transmission transmitter is connected with the forward transmission receiver, and the reverse feedback transmitter is connected with the reverse feedback receiver. The invention feeds back the reconstructed video frame information of the remote video decoder on the reverse channel, so that the reconstructed frames of the local decoder in the local video encoder and the reconstructed frames of the remote video decoder are synchronized; Frame feedback adopts the method of coarse quantization to reduce the required data rate and reduce the requirement on the operation speed of the decoder.

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...

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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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