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Macro block pair class frame field adaptive coding/decoding method

A decoding method and frame encoding technology, applied in the field of macroblock-to-level frame-field adaptive encoding and decoding, can solve the problems of slow encoding/decoding speed, unsuitable hardware implementation, high power consumption, etc., so as to reduce power consumption and improve encoding and decoding. effect of speed

Inactive Publication Date: 2007-03-07
TSINGHUA UNIV
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Problems solved by technology

Since the second stage of encoding / decoding only needs to encode / decode the bottom field macroblock (VS1) of the field coded macroblock pair, and this method needs to read the frame fields of all macroblock pairs one by one during the second stage of encoding / decoding Encoding flag, so the encoding / decoding speed is slow, and the power consumption required is large, especially not suitable for hardware implementation

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  • Macro block pair class frame field adaptive coding/decoding method
  • Macro block pair class frame field adaptive coding/decoding method
  • Macro block pair class frame field adaptive coding/decoding method

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0025] The present invention proposes a macroblock pair-level frame field adaptive predictive encoding / decoding method, including:

[0026] Perform the first stage of encoding / decoding:

[0027] 1) Determine whether the macroblock pair is frame coding or field coding. If it is frame coding, then encode / decode the upper and lower frame macroblocks (NS0 and NS1); if it is field coding, only the top field macroblock (VS0 ) code / decode, and store the frame field coding flag of the macroblock pair;

[0028] 2) Repeat step 1) until all frame macroblocks (NS0 and NS1) and top field macroblocks (VS0) in an image complete encoding / decoding;

[0029] In the process of the above steps 1), 2), it also includes dividing a plurality of macroblock pairs into macroblock pairs in the order of encoding, and calculating the frame field encoding signs of the ma...

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Abstract

This invention relates to macro block degree field self-adapting decoding method, which comprises the following steps: a, decoding multiple macro blocks into groups on codes order to compute macro block group set on the frame codes label; second coding to get set label; judging whether there is field codes macro block pairs in multiple blocks, if there is field codes macro blocks, then getting above set label frame field; if there is then jumping macro blocks; if there is codes, then processing second coding till second coding phase end.

Description

technical field [0001] The invention belongs to the technical field of video encoding and decoding, and in particular relates to a method for adaptive encoding and decoding of macroblock-level frame field. Background technique [0002] In most video compression standards, such as MPEG-1, MPEG-2, MPEG-4, H.261, H.263, H.263+, 264 / AVC, and China's advanced audio and video standard AVS, etc., Both adopt the hybrid coding method of predictive coding, transform coding and entropy coding. This hybrid coding method specifically includes: first perform intra-frame and inter-frame prediction to eliminate the correlation in the time domain; then perform two-dimensional transformation on the residual of the original image and the prediction result (using discrete cosine transform or other linear transformation) , to eliminate spatial correlation; then perform entropy coding to remove statistical redundancy. [0003] In order to improve the compression efficiency of video signals, pre...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32H04N19/172H04N19/176H04N19/50
Inventor 何芸瞿艳梅朱炳强
Owner TSINGHUA UNIV
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