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Encoding method and device and decoding method and device

A technology of encoding method and decoding method, which is applied in the fields of digital video signal modification, electrical components, image communication, etc., can solve the problem of not making full use of the correlation of intra-frame brightness prediction modes, and achieve the effect of improving efficiency

Active Publication Date: 2016-06-29
HFI INNOVATION INC
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Problems solved by technology

However, the coding schemes considered above for intra luma prediction modes may not be able to fully utilize the correlation of adjacent intra luma prediction modes, thus further improving their performance

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  • Encoding method and device and decoding method and device
  • Encoding method and device and decoding method and device
  • Encoding method and device and decoding method and device

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[0016] Motion compensated inter-frame coding has been widely adopted by various coding standards, such as MPEG-1 / 2 / 4 and H.261 / H.263 / H.264 / AVC. Although motion-compensated inter-frame coding can effectively reduce the bit rate of compressed video, intramode coding (intramodecoding) is still required to process I-picture (I-picture) or I-block (I-block) for fast access to compressed video data Or reduce error propagation (error propagation). Intra prediction can exploit spatial correlation in an image or image region. In order to further improve coding efficiency, the High-Efficiency Video Coding (HEVC) standard under development makes extensive use of block-based spatial prediction. In HEVC, multiple intra prediction modes are used to utilize spatial characteristics, and the number of intra prediction modes depends on the block size of a prediction unit (Prediction Unit, PU). For example, HEVC under development allows intra prediction of luma blocks (ie, PUs) of sizes 64x64,...

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Abstract

A method of video coding using intra prediction in which the intra prediction modes are ranked according to a priority order associated with the block size. One or more tables are used, where the tables ranks the intra prediction modes according to a first priority order for the block having a first block size and ranks the intra prediction modes according to a second priority order for the block having a second block size. Two or more neighboring intra prediction modes corresponding to two or more neighboring blocks are received, where each neighboring block has a neighboring block size corresponding to the first block size or the second block size. A highest-priority mode among said two or more neighboring intra prediction modes is selected as the most probable mode. The current mode is then encoded or decoded using the most probable mode as a predictor.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from U.S. Provisional Application No. 61 / 430,701, filed January 7, 2011, and titled "Improved IntraPrediction Mode Coding Method," and Application No. 61 / 430,701, filed January 31, 2011 437,910, U.S. provisional case titled "Improved IntraPredictionModeCodingMethod." The entire contents of said application are hereby incorporated by reference. technical field [0003] The present invention relates to video coding, and in particular to coding techniques related to intraluma prediction mode. Background technique [0004] Motion compensated inter-frame coding has been widely adopted by various coding standards, such as MPEG-1 / 2 / 4 and H.261 / H.263 / H.264 / AVC. Although motion-compensated inter-frame coding can effectively reduce the bit rate of compressed video, it still requires intra-mode coding (intramodecoding) to process raw images or periodically insert multiple I-pictures (or intra-co...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/196H04N19/593H04N19/463
CPCH04N19/593H04N19/11H04N19/159H04N19/196H04N19/463
Inventor 国玫郭峋雷少民
Owner HFI INNOVATION INC
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