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A decoding method for video image to skip the macro block

A decoding method and a video image technology, applied in the field of video coding, can solve problems such as the reduction of coding efficiency, and achieve the effects of reducing cost, strong usability, and improving efficiency

Inactive Publication Date: 2010-05-12
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At this time, the macroblock address increment method cannot fully utilize the advantages of variable-length codes, and the coding efficiency is also greatly reduced.

Method used

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  • A decoding method for video image to skip the macro block
  • A decoding method for video image to skip the macro block
  • A decoding method for video image to skip the macro block

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Embodiment Construction

[0023] A video image is composed of multiple macroblocks. Therefore, to encode a video image, the type of macroblock must be encoded first, and then the macroblock itself should be encoded. After encoding all the macroblocks, the encoding of the image is completed.

[0024] The present invention relates to the coding of macroblock types of inter-frame coded video images, skipping macroblocks can be regarded as a special type of macroblocks, and for the coding of macroblocks themselves such as motion vectors, residuals and other data, it can be used Any kind of macroblock encoding method.

[0025] According to the code rate and image quality requirements and the characteristics of the video sequence, the coded image with more skipped macroblocks adopts run-length coding, and the coded image with fewer skipped macroblocks adopts the combination of the number of skipped macroblocks and the type of macroblocks. Therefore, it can better adapt to different application requirements, ...

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Abstract

The invention proposes a decoding method for jumping over a macro block during video encoding, comprises: reading encoding sign of a current image jumping over the macro block from a code stream, judging encoding type of the current image jumping over the macro block based on the encoding sign; selecting a macro block type decoding manner according to the encoding type, decoding the macro block type of the current macro block of the current image by using a run decoding manner or a decoding manner of jumping over the macro block number and combining the macro block type, and decording the macro block self-data for the macro block of the current image; judging whether the current macro block is a last encoded macro block of the current image, if it is, decoding is finished, otherwise, decoding is continuously performed. The invention improves image encoding efficiency, reduces cost for transport and storage by adaptively selecting an encoding manner of the video image jumping over the macro block and a corresponding decoding manner, thereby the invention is an easy and available technic scheme, and can be executed in frame encoding or field encoding.

Description

technical field [0001] The present invention relates to a method for decoding a video image, especially a method for encoding a skipped macroblock of a video image and a corresponding decoding method for obtaining a video image when the encoded image contains a skipped macroblock, which belongs to the field of video coding field. Background technique [0002] The common technologies of digital TV, new generation mobile communication, broadband network communication, household consumer electronics and other high-tech industry clusters focus on multimedia information processing technology with video and audio as the main content, especially data compression technology. Efficient video codec technology is the key to realize high-quality, low-cost multimedia data storage and transmission. [0003] In existing video standards (such as MPEG series and H.26x series), there is a skipped macroblock mode (Skipped Macroblock). The so-called skipping macroblock means that no additiona...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/50H04N19/105H04N19/176
Inventor 高文郑俊浩马思伟季向阳张鹏吕岩
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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