Video coding method

A video coding and video technology, applied in the field of video coding, can solve the problem of long coding time, save coding time and reduce the number of searches.

Inactive Publication Date: 2010-11-10
HISENSE
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  • Abstract
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Problems solved by technology

[0003] At present, the AVS encoder performs a full search for all modes, performs motion estim

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[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined.

[0025] In the embodiment of the present invention, the best coding mode of the current macroblock is mainly searched first, or the coding mode that is most likely to be the best mode is searched first, and no other coding is required if the set conditions are satisfied. pattern search, otherwise search for other encoding patterns.

[0026] The video sequence has great correlation in space and time. Statistics show that the current macroblock, its left and upper adjacent macroblocks, and the corresponding macroblock of the reference frame (these three constitute the prediction model of the embodiment of the present invention) three The probabilit...

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Abstract

The invention provides a video coding method, comprising the following steps: determining coding mode of each macro block in a video first frame; setting a prediction model; and analyzing the coding mode of each macro block in the prediction model; if the first condition is satisfied, determining the coding mode of the current macro block; if the first condition is not satisfied, sequentially searching other interframe coding modes and judging whether the second condition is satisfied; if the second condition is satisfied, determining the coding mode of the current macro block; and if the second condition is not satisfied and the coding mode of each macro block in the prediction model does not include an intra-frame mode, searching the intra-frame mode to determine the coding mode of the current macro block. The video coding method can improve coding efficiency.

Description

technical field [0001] The invention relates to a video coding method, in particular to a video coding method under the AVS video codec standard format. Background technique [0002] The current video formats mainly include: H.264, WMA-HD, MPEG2-TS, MPEG4, and VC-1, etc., which correspond to the codec standards of radio, television and program sources in various foreign countries, while the codec standards of Chinese video are currently the national The self-owned intellectual property launched is the AVS video codec standard. Currently, upstream and downstream promotion and industrialization work is being carried out in the field of radio and television and related products. [0003] At present, the AVS encoder performs a full search for all modes, performs motion estimation and calculates the rate-distortion cost for each mode, and the encoding time is too long. [0004] The full search is to search all six modes for the macroblock: skip, 16*16, 16*8, 8*16, 8*8, intra (t...

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Application Information

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IPC IPC(8): H04N7/26H04N7/32H04N19/103H04N19/176
Inventor 刘微魏建云彭玉华裴雷
Owner HISENSE
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