Predicting coding method in frame and the system thereof

An intra-frame prediction coding and intra-frame prediction technology, which is applied in the direction of bidirectional working system, specific information broadcasting system, code conversion, etc., can solve the problem of prediction effect and coding efficiency not reaching the ideal level.

Inactive Publication Date: 2009-03-04
HUAWEI TECH CO LTD
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Problems solved by technology

[0011] In practical application, the above scheme has the following problem: if the correlation between the current macroblock and its right block or the lower block is stronger than the left block or the upper block, the prediction effect and coding efficiency of the above-mentioned prior art scheme have not yet reached the ideal level

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  • Predicting coding method in frame and the system thereof
  • Predicting coding method in frame and the system thereof
  • Predicting coding method in frame and the system thereof

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Embodiment Construction

[0050] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0051] The core of the present invention is to perform different types of transformations on the original data before encoding the original data, but the transformation must be reversible and be able to keep the correlation between the macroblocks in the strip unchanged before and after the transformation. Such as various angles of rotation, flip along the diagonal of the strip, and flip along the horizontal or vertical central axis of the strip, etc. Then, the original data and the results after different types of transformations are respectively encoded, and the output with the best encoding efficiency is selected from the results of each encoding, and an identifier is output at the same time to indicate the best encoding efficiency. The encoding object type, for...

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Abstract

The present invention discloses intraframe predictive coding method and system relating to video picture compression technique. It contains to each band at least to make twice encoding, each time coded object being different, it capable of being said band original data or said band type conversion result, selecting out best result outputting, at the same time outputting one identify for indicating best code efficiency object type, if it being converted data then needing indicating type, capable of using number to distinguish the conversation type. In decoding, said invention first makes normal decoding to band, then according to identify corresponded conversion type to make relevant inverse conversion to decoding result.

Description

Technical field [0001] The invention relates to video image compression technology, in particular to an intra-frame prediction coding and decoding method and its system. Background technique [0002] The H.264 video compression coding standard was developed by the International Telecommunication Union Telecommunication Standardization Sector ("ITU-T"), the International Organization for Standardization ("ISO") and the International Electrotechnical Commission (International Electrotechnical). Commission, referred to as "IEC"), was formulated by the Moving Picture Expert Group ("MPEG" for short). [0003] At present, H.264 has gradually become the mainstream standard in multimedia communication, and a large number of multimedia real-time communication products of the H.264 standard are adopted, such as video conferencing, video phones, and third generation (3rdGeneration, "3G") mobile communication terminals. And network streaming media products have come out successively. It can ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/32H04N7/173H04H60/72H04N7/26H04N7/52H04N19/61
CPCH03M7/4006H04N19/109H04N19/139H04N19/625H04N19/91
Inventor 熊联欢林四新谢清鹏
Owner HUAWEI TECH CO LTD
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