Predicting coding method and its system in frame

A technology of intra-frame predictive coding and coding methods, which is applied in the field of intra-frame predictive coding methods and systems, and can solve the problems that the prediction effect and coding efficiency have not reached the ideal level, etc.

Inactive Publication Date: 2006-11-08
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 prior art scheme have not yet reached the ideal level

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  • Predicting coding method and its system in frame
  • Predicting coding method and its system in frame
  • Predicting coding method and its system in frame

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Embodiment Construction

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

[0051] The core of the present invention is that different types of transformations are performed on the original data before the original data is encoded, but the transformation must be reversible and the correlation between the macroblocks in the slice can be kept unchanged before and after the transformation. Such as rotation at various angles, flipping along the diagonal of the strip, and flipping along the horizontal or vertical central axis of the strip, etc. Then, encode the original data and the results after different types of transformations respectively, select the output with the best encoding efficiency from the results of each encoding, and output a flag at the same time to indicate the one with the best encoding efficiency The encoded object type, f...

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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 predictive encoding method and system thereof. Background technique [0002] The H.264 video compression coding standard was established by the International Telecommunication Union Telecommunication Standardization Sector (International Telecommunication Union Telecommunication Standardization Sector, referred to as "ITU-T") in conjunction with the International Organization for Standardization (hereinafter referred to as "ISO") and the International Electrotechnical Commission (International Electrotechnical Commission). Commission, referred to as "IEC")'s Moving Picture Experts Group (Moving Picture Expert Group, referred to as "MPEG"). [0003] At present, H.264 has gradually become the mainstream standard in multimedia communication, and a large number of multimedia real-time communication products using H.264 standard, such as conference TV, videophone, t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/173H04H60/72H04N7/26H04N7/52H04N19/61
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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