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Method for enhancing intra-layer and frame prediction

An intra-frame prediction and enhancement layer technology, applied in the field of communication, can solve the problems of poor prediction accuracy, low coding efficiency, and insufficient use of low-level coded information, so as to improve accuracy, improve video coding efficiency, and realize simple Effect

Active Publication Date: 2006-10-18
TENCENT TECH (SHENZHEN) CO LTD
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Problems solved by technology

[0009] When the JSVM1 enhancement layer uses the H.264 INTRA prediction technology alone, it does not make full use of the low-level coded information, and has the disadvantages of poor prediction accuracy and low coding efficiency. Although the JSVM1 enhancement layer adds the I_BL prediction method, its coding efficiency remains to be seen. for further improvement

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  • Method for enhancing intra-layer and frame prediction
  • Method for enhancing intra-layer and frame prediction
  • Method for enhancing intra-layer and frame prediction

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Embodiment Construction

[0046] The core of the present invention is to determine the low-layer macroblock corresponding to the current macroblock, and perform intra-frame prediction on the current macroblock according to the reconstructed pixel values ​​around the low-layer macroblock.

[0047] The technical solution provided by the present invention will be further described below based on the core idea of ​​the present invention.

[0048] The macroblock in the present invention is a macroblock based on the intra-frame coding mode in video coding, and the macroblock can be: a 16×16 macroblock, an 8×8 macroblock, or a 4×4 macroblock macroblock.

[0049] The implementation principle of the enhancement layer intra prediction method of the present invention is as follows: Figure 6 shown.

[0050] Figure 6 Among them, the intra-frame prediction of the 16×16 current macroblock of the K-th layer needs to be realized by reconstructing the pixel values ​​around the lower-layer macroblock corresponding to ...

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Abstract

A method for carrying out in-frame prediction of intensified layer includes confirming low layer macro block corresponded by current macro block and carrying out in-frame prediction for current macro block according to peripheral reconstructed pixel value of low layer macro block for raising in-frame prediction accuracy of intensified layer.

Description

technical field [0001] The invention relates to video processing technology in the field of communication, in particular to an enhancement layer intra-frame prediction method. Background technique [0002] With the development of multimedia technology and the rapid promotion of multimedia applications, video image compression standards and technologies have received widespread attention, especially the two standard organizations jointly formed by MPEG (Moving Picture Experts Group) and ITU (International Telecommunication Union). H.264 developed by JVT, the standard formulation working group, has not only been applied in conference TV, videophone, streaming media, HDDVD, video surveillance, digital TV, 3G and other fields due to its advanced technical characteristics and good compression performance , but also has broad application prospects. [0003] The compression processing framework of H.264 is attached figure 1 shown. [0004] exist figure 1 Among them, the basic p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/159H04N19/176
Inventor 熊联欢
Owner TENCENT TECH (SHENZHEN) CO LTD
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