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Intra prediction mode decision based on direction vector for HEVC (High Efficiency Video Coding)

A technology for predicting patterns and direction vectors, which is applied in the field of image processing and can solve problems such as the decrease in the number of candidate patterns

Inactive Publication Date: 2012-09-12
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0023] In terms of intra prediction, although several candidate mode selection algorithms have been proposed to reduce the number of modes for final RDO while satisfying BD-rate (BD-rate) But the number of candidate patterns still has room to drop

Method used

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  • Intra prediction mode decision based on direction vector for HEVC (High Efficiency Video Coding)
  • Intra prediction mode decision based on direction vector for HEVC (High Efficiency Video Coding)
  • Intra prediction mode decision based on direction vector for HEVC (High Efficiency Video Coding)

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Embodiment Construction

[0049] Various aspects are now described with reference to the figures. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. It may be evident, however, that such aspects can be practiced without these specific details.

[0050] As used in this application, the terms "component", "module", "system" and the like are intended to refer to a computer-related entity such as, but not limited to, hardware, firmware, a combination of hardware and software, software, Or software in execution. For example, a component may be, but is not limited to being limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. For example, both an application running on a computing device and the computing device can be components. One or more components can reside within a process and / or thread of execution ...

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Abstract

The invention discloses a self-adaptive intra prediction mode decision method for HEVC (High Efficiency Video Coding). The method comprises the following steps of: roughly selecting a prediction mode by using the amplitude and angle of a direction vector to obtain a tidy candidate prediction mode set; and performing RDO (Rate-Distortion Optimization) specific to the candidate prediction mode set to determine an optimal prediction mode.

Description

[0001] joint research [0002] This application is jointly researched by North China University of Technology and Information Institute of Beijing Jiaotong University, and supported by the following funds: National Natural Science Foundation of China (No. Research Fund (No.2011JBM214). technical field [0003] The present invention relates to the field of image processing, and more specifically, to a fast intra-frame prediction mode decision method based on a direction vector for intra-frame prediction mode selection in High Efficiency Video Coding (HEVC). Background technique [0004] In April 2010, the two major international video coding standard organizations VCEG and MPEG established a video compression joint team JCT-VC (Joint collaborative Team on Video Coding) to jointly develop the HEVC standard, also known as H.265. The main goal of the HEVC standard is to achieve a substantial improvement in coding efficiency compared with the previous generation standard H.264 / A...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/32H04N19/11
Inventor 张萌萌白慧慧曲建峰
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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