Video coding-decoding processing method

A technology of video codec and processing method, which is applied in the field of multimedia communication, can solve the problems that video communication cannot achieve the expected effect, visual angle distortion, etc., achieve the effect of good error concealment, reduce image distortion, and improve the effect

Active Publication Date: 2005-12-21
TENCENT TECH (SHENZHEN) CO LTD
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Problems solved by technology

[0025] Since the FMO video coding processing technology uses the macroblock MB as the basic processing unit for codec processing, although it has a good concealment effect on the error code stream caused by the quality of the transmission channel, in the process of video image restoration, its According to the restored image information of other adjacent macroblocks MB, the approximate image inserted in the errored macroblock still has a large visual distortion, so that the video communication cannot achieve the expected effect.

Method used

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  • Video coding-decoding processing method
  • Video coding-decoding processing method

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Embodiment Construction

[0062] The basic design idea of ​​the video encoding and decoding processing method of the present invention is to classify the sub-blocks in the macro-block MB, so that the coding information of each sub-block belongs to different macro-block groups SLICE, or the sub-macroblocks belonging to the same macro-block group SLICE Group SLICE, so that in the process of image restoration, for error sub-block groups caused by transmission channel quality problems, each error sub-block can be correspondingly corrected according to the image information of other adjacent sub-blocks around each error sub-block The processing of inserting the approximate image information is performed, so that the inserted approximate image information has higher accuracy and better error concealment effect, so as to reduce the distortion of the video image from the perspective of vision. Corresponding to the flexible macroblock ordering (FMO, Flexible Macroblock Ordering) video encoding processing method ...

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Abstract

The method includes steps: carrying out subprocess of transforming subblocks for each block inside each macro group respectively; sorting process is carried out for all subblocks after transform process inside each macro group; sending party sends encoded transformation coefficients of header information of each macro group, header information of macro block and each class of sub block group; receiving party carries out decoding proves for corrected received code stream respectively in order to recover image information of corresponding sub block; base on image information of relevant sub blocks, the receiving party carries out image information process in insertion approach algorithm for each sub block of containing error code. The invention is capable of carrying out process of anti error code more precisely for stream of error code caused by quality of transmission channel. Features are: lowering visual distortion of video image and raising effect of video communication.

Description

technical field [0001] The invention relates to the field of multimedia communication, in particular to a video codec processing method. Background technique [0002] In a multimedia communication system, video image quality plays a key role in multimedia communication performance. However, often due to the quality of the transmission channel, the coded stream of the video image will experience packet loss and bit errors during the transmission process, especially the bit error rate and packet loss rate of the wireless transmission channel are relatively high. , and the bandwidth changes greatly, so that the video image receiver cannot receive the coded stream of the video image completely and correctly, and if a better video communication effect is to be obtained, it is necessary to correct the received error code Streams (including erroneous bit streams and discarded bit streams, etc.) are subjected to anti-error processing, so that the video image recovered from decoding...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N19/895
CPCH04N19/895H04N19/61
Inventor 熊联欢
Owner TENCENT TECH (SHENZHEN) CO LTD
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