Decision-making method and device for intra-frame prediction mode of high efficiency video coding

An intra-frame prediction mode and high-efficiency video coding technology, which is applied in the field of video coding, can solve problems such as the increase in the computational complexity of the encoder, and achieve the effects of increasing the speed of intra-frame prediction coding, improving computing efficiency, and reducing the number

Inactive Publication Date: 2015-09-02
LETV INFORMATION TECH BEIJING
View PDF7 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] There are 35 intra-frame prediction modes in HEVC. If a Rate Distortion Optimization (RDO) operation is performed for each intra-frame prediction mode, that is, a prediction and transformation is perform...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Decision-making method and device for intra-frame prediction mode of high efficiency video coding
  • Decision-making method and device for intra-frame prediction mode of high efficiency video coding
  • Decision-making method and device for intra-frame prediction mode of high efficiency video coding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] The core of the present invention is to divide 33 kinds of directional prediction modes into M (M can be 4) directional mode groups according to the order of direction / angle (or intra-frame mode number), and adopt dichotomy in each directional mode group Find an optimal intra-frame prediction mode with the smallest rate-distortion cost based on Hadamard transform in each direction mode group; perform Hadamard-based transform on mode 0, mode 1 and the optimal intra-frame prediction mode in each direction mode group Rough selection, select the N (N can be 3) intra prediction modes based on Hadamard transform with the smallest rate-distortion cost and add them to the RDO screening list, and add MPM to the RDO screening list; finally, the RDO screening list The RDO operation is performed for each intra-frame prediction mode, and the rate-distortion cost value J of each intra-frame prediction mode is obtained mode , and finally select J mode The smallest optimal intra predi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a decision-making method and a decision-making method device for intra-frame prediction modes of high efficiency video coding. The decision-making method comprises the steps of: dividing directivity prediction modes of a current PU block into M direction mode groups according to corresponding serial number of the modes, and adopting a dichotomy to find out an optimal intra-frame prediction mode based on Hadamard transform at minimal rate distortion cost in each direction mode group; carrying out rough mode decision based on Hadamard transform on a mode 0, a mode 1, one or more most-likely prediction modes and the optimal intra-frame prediction mode in each direction mode group, and selecting the N intra-frame prediction modes based on Hadamard transform at minimal rate distortion cost to be added into a screening list; and carrying out rate distortion optimization calculation on the intra-frame prediction modes contained in the screening list, and selecting one of the optimal intra-frame prediction modes for predicting the current PU block. Compared with the prior art, the decision-making method and the decision-making method device can increase the intra-frame prediction encoding speed by 20% without changing video compression quality.

Description

technical field [0001] The present application relates to the field of video coding, and in particular to a method and device for determining an intra prediction mode of High Efficiency Video Coding (HEVC). Background technique [0002] In recent years, with the development of the Internet and hardware devices, the cost of video production has become lower and lower, and the demand for video sharing and access has been increasing. The resolution of video is getting bigger and bigger, high-definition video (resolution is 1920×1080, denoted as 1080p) and even ultra-high-definition video (resolution is 3840×2160, denoted as 4K) is being produced, disseminated and played more and more . However, neither MPEG-2 (Moving Picture Experts Group 2, Moving Picture Experts Group Series Standard 2) nor H.264 / AVC (Advanced Video Coding, Advanced Video Coding) are designed for this high-resolution video, This puts forward new requirements and challenges for video compression technology. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04N19/11H04N19/147
Inventor 蔡砚刚魏伟白茂生刘阳
Owner LETV INFORMATION TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap