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Block group coding structure and adaptive phased predictive coding method based on the same structure

A self-adaptive and encoding technology, applied in television, electrical components, digital video signal modification, etc., can solve problems such as high complexity, achieve good compatibility and improve compression efficiency

Inactive Publication Date: 2006-08-02
CENT ACADEME OF SVA GROUP +1
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  • Claims
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Problems solved by technology

This predictive coding method can also adapt to frame images and field images, but the complexity is large

Method used

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  • Block group coding structure and adaptive phased predictive coding method based on the same structure
  • Block group coding structure and adaptive phased predictive coding method based on the same structure
  • Block group coding structure and adaptive phased predictive coding method based on the same structure

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Embodiment approach

[0071] A block group coding structure, defining 16 pixels×32 pixels as block group BG; in this embodiment, all block groups are macroblock groups; it includes original macroblock group NS and derived macroblock group VS;

[0072] As shown in Figure 1, for the original image of progressive scanning, a continuous 16 pixels × 32 pixels constitute an original macroblock group NS; for the original image of interlaced scanning, the temporally adjacent odd field and even field , or the even-field and odd-field images are assembled into a frame image according to the natural space position, and a continuous 16 pixels×32 pixels in the assembled frame image constitute an original macroblock group NS;

[0073] As shown in Figure 2, the original macroblock group NS is composed of the original upper layer macroblock group NS0 and the original lower layer macroblock group NS1, the original upper layer macroblock group NS0 is the first row to the 16th row of the original macroblock group NS ...

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Abstract

A coding structure for group of blocks is prepared as defining M pixel X N pixel to be group of blocks containing original group of blocks and derived group of blocks, setting original group of blocks to be continuous group of blocks with M pixel x N pixel, setting up derived group of blocks by carrying out vertical 1 / 2 sampling on original group of blocks, obtaining M pixel x N pixel group of blocks after rearrangement .The adaptive-sectional prediction coding method based on said structure for group of blocks is also disclosed.

Description

technical field [0001] The present invention relates to a block group coding structure and an adaptive stage-by-stage predictive coding method based on the structure. Adaptation to staged predictive coding methods. Background technique [0002] Traditional image sequence coding standards, also called video coding standards, such as H.261, H.263, H.263+, H.264 standards formulated by ITU (International Telecommunication Union), and MPEG (International Standardization Organization) of ISO (International Organization for Standardization) MPEG-1, MPEG-2, and MPEG-4 formulated by the Motion Picture Experts Group are all based on the Hybrid Coding framework. The hybrid encoding framework is a hybrid temporal-spatial video image encoding method, which includes: first performing intra-frame and inter-frame prediction to eliminate the correlation in the time domain; then the residual of the original image and the prediction result For two-dimensional transformation, discrete cosine...

Claims

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Application Information

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IPC IPC(8): H04N7/32H04N19/119H04N19/182
Inventor 赵海武侯钢王国中何芸陈建文李国平
Owner CENT ACADEME OF SVA GROUP
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