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Method for realizing image error covering in video decipher and video decoder

A technology for video decoder and error concealment, applied in the field of realizing image error concealment in video decoding and the field of video decoder, can solve problems such as inability to predict MV, and achieve good error concealment effect

Active Publication Date: 2008-07-23
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is a step further than direct copying, because it conforms to the motion trend of the image, and the effect of error concealment is more realistic, but the implementation of the method needs to modify the original layer design below the Slice, and add the function of taking the surrounding mv to estimate, Mv can only be predicted from the air domain, but not from the time domain

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  • Method for realizing image error covering in video decipher and video decoder
  • Method for realizing image error covering in video decipher and video decoder
  • Method for realizing image error covering in video decipher and video decoder

Examples

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Embodiment Construction

[0024] Embodiments of the present invention provide a method and a video decoder for realizing image error concealment in video decoding. In the case of an error in the slice-level compressed data information (Slice Data), a full Skip (skip macroblock) code stream is compiled through the encoder and configured for decoding at the lower layer of the Slice, so as to realize the repair function of the wrong image.

[0025] The compressed data types that need to be decoded in video codec include P frame and B frame, where: P frame is the forward reference frame in video codec, and B frame is the bidirectional reference frame in video codec, including the backward reference frame , P frame or B frame contains multiple Slices.

[0026] In H.264, based on the context-adaptive variable-length coding (CAVLC) coding mode, there is a skip macroblock coding (Skip coding), which can use an entropy coding (Exp-Golomb) codeword to represent a series of continuous Skip MB, Skip MB There is n...

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Abstract

The example of the invention discloses a method for concealing image error in a realization of video decoding, which comprises the following steps detecting whether encoding errors are occurred on a slice compressing data information, calculating the total number of the error macro module in the slice compressing data information if the encoding error is detected on the slice compressing the data information, generating a coding flow of a corresponding jumping-macro module according to the total number of the macro module, and encoding a coding flow of a corresponding jumping-macro module. The example of the invention further discloses a video decoder, a segment of a whole Skip code flow are coded by the coder to allocate into a sub-layer encoding to the Slice through the method for concealing image errors in the realization of video decoding and the video decoder which are provided by the invention, under the error condition of the slice compressing data information (Slice Date), thereby realizing the function of repairing error images.

Description

technical field [0001] The invention relates to a communication application field, in particular to a method for realizing image error concealment in video decoding and a video decoder. Background technique [0002] H.264 is an international standard format for video coding jointly formulated by the international telecommunication standardization department ITU-T and the international standardization organization ISO / International Electrotechnical Association IEC that formulates MPEG. The original intention of the H.264 standard was to develop a new video coding standard to achieve high video compression ratio, high image quality, and good network adaptability. H.264 is also known as MPEG-4AVC ("Moving Picture Experts Group-4 Advanced Video Coding") or MPEG-4Part10. [0003] H.264 is a video compression standard proposed by the Joint Video Team (JVT). H.264 decoding is mainly divided into a video sequence (Sequence) layer, an image (Picture) layer, and a slice header from t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/64H04N7/26H04N19/89
CPCH04N19/00272H04N19/00933H04N19/89H04N19/174
Inventor 邱文轶
Owner HUAWEI TECH CO LTD
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