Intra-frame coding method based on HEVC

An intra-frame coding and coding block technology, which is applied in the fields of digital video signal modification, electrical components, image communication, etc., and can solve the problem that the acceleration effect cannot meet the requirements of practical applications.

Active Publication Date: 2014-06-25
BEIJING UNIV OF TECH
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  • Abstract
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Problems solved by technology

However, its acceleration effect still cannot meet the requirements of practical applications.

Method used

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  • Intra-frame coding method based on HEVC
  • Intra-frame coding method based on HEVC
  • Intra-frame coding method based on HEVC

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Embodiment Construction

[0054] This HEVC-based intra-frame encoding method includes the following steps:

[0055] (1) Obtain the size of the left, upper left, and upper blocks adjacent to the current coding block. If the sizes of the left, upper left, and upper blocks are all 2, set the size of the current coding block to 2 and perform step (3); if the left, upper left , the sizes above are all 3, set the size of the current coding block to 3 and execute step (3); otherwise, execute step (2);

[0056] (2) Reduce the number of patterns in the RMD candidate queue for coarse-grained pattern selection according to probability;

[0057] (3) If the predicted block size is 32×32 or 16×16, perform step (4), otherwise perform step (5);

[0058] (4) Perform RMD and skip to step (9);

[0059] (5) Determine the similarity between the RMD candidate queue and the candidate queue of the parent prediction block, and perform step (6) similarly, otherwise perform step (7);

[0060] (6) Use the optimal mode of the p...

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Abstract

The invention discloses an intra-frame coding method based on HEVC. The method includes the steps that first, the sizes of the left bock, the upper left block and the upper block of a current coding block are acquired, if the sizes are all two or three, the size of the current coding block is set to be two or three, and the third step is executed, or else the second step is executed; second, according to probability, the number of modes in an RMD candidate queue is reduced; third, if the size of a predicted block is 32*32 or 16*16, the fourth step is executed, or else the fifth step is executed; fourth, RMD is performed, and the ninth step is skipped to; fifth, the degree of similarity of the RMD candidate queue to a candidate queue of a parent predicted block is judged, if the RMD candidate queue is similar to the candidate queue of the parent predicted block, the sixth step is executed, or else the seventh step is executed; sixth, the optimal mode of the parent predicted block serves as the optimal mode of the current predicted block, and the ninth step is executed; seventh, mode filtration is performed on the RMD candidate queue; eighth, the processed RMD candidate queue is grouped; ninth, RDO is performed.

Description

technical field [0001] The present invention belongs to the technical field of video coding, and in particular relates to an HEVC-based intra-frame coding method. Background technique [0002] HEVC is jointly formulated by the Video Coding Experts Group (ITU-T VCEG) of the International Telecommunication Union Telecommunication Standardization Organization (ITU-T VCEG), the International Organization for Standardization (ISO) and the Motion Picture Experts Group (MPEG) of the International Electrotechnical Commission (IEC). Advanced video coding standards. The main work has been basically completed in January 2013. HEVC can obtain very good coding effects for video in the traditional sense. Its makers have also done a series of work to extend the standard to support professional applications in some additional application scenarios. , so that this standard can be applied to other fields, such as scalable video coding and 3D / stereoscopic / multi-view video coding. [0003] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/11H04N19/105H04N19/147
Inventor 丁文鹏申文龙施云惠尹宝才
Owner BEIJING UNIV OF TECH
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