Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

An optimization method for hevc rate control based on joint space-time domain information

A bit rate control and optimization method technology, applied in image communication, digital video signal modification, electrical components, etc., can solve the problems of low accuracy of bit allocation and degradation of subjective video quality, so as to improve accuracy and reduce fluctuations Effect

Active Publication Date: 2022-08-05
SICHUAN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, HEVC uses MAD as a measure of coding unit complexity when performing bit allocation, and does not fully consider the characteristics of human vision, resulting in a series of problems such as low accuracy of bit allocation and degradation of subjective video quality.

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
  • An optimization method for hevc rate control based on joint space-time domain information
  • An optimization method for hevc rate control based on joint space-time domain information
  • An optimization method for hevc rate control based on joint space-time domain information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The present invention will be further described in detail below in conjunction with the examples. It is necessary to point out that the following examples are only used to further illustrate the present invention, and should not be construed as limiting the protection scope of the present invention. Those skilled in the art are based on the above invention. content, some non-essential improvements and adjustments are made to the present invention for specific implementation, which should still belong to the protection scope of the present invention.

[0042] (1) The method proposed in the present invention is developed on the HEVC standard test code HM16.0 platform. The configuration file selects encoder_lowdelay_P_main.cfg, the encoding structure is IPPP, the GOP size is set to 4, and the IntraPeriod is set to 4. In the rate control parameter configuration, RateControl is set to 1, indicating that the rate control is turned on;

[0043] (2) The test sequence to verify ...

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 starts from the mismatch between the code rate control model in HEVC and the visual characteristics of human eyes, and discloses an HEVC code rate control optimization method based on joint information in the space-time domain. First, the Sobel operator is used to obtain the spatial and temporal information; after correcting the extreme coefficient values, the joint spatial-temporal information guides the frame-level target bit allocation; CTU-level bit allocation; finally, after a CTU or a frame is encoded, the BFGS algorithm is used to update the parameters. Compared with HEVC or VVC, the code rate control optimization method disclosed in the present invention is error , SSIM, time complexity and rate-distortion curves have been improved, and the per-frame bit allocation and PSNR fluctuations are smoother. The video sequence obtained based on the present invention more satisfies the needs of the human visual system, and can achieve great optimization in terms of subjective quality.

Description

technical field [0001] The present invention relates to the technical problem of code rate control optimization in the field of video coding, in particular to a high efficiency video coding standard (High Efficiency Video Coding, HEVC) code rate control optimization method based on joint spatial-temporal domain information. Background technique [0002] With the increasing progress of communication technology and the popularization of smart terminals, all kinds of videos have gradually entered people's daily life. etc.) has become the trend of multimedia technology development. What follows is the explosive growth of video data volume, and the current mainstream video coding standard H.264 / Advanced Video Coding (AVC) can hardly compress videos with large data volume efficiently. In April 2010, two international organizations, the video coding experts group (VCEG) and the moving picture experts group (MPEG), jointly established the JointCollaborative Team on Video Coding (JC...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/146H04N19/184H04N19/70
CPCH04N19/146H04N19/70H04N19/184
Inventor 何小海赵则明熊淑华孙伟恒张斐然卿粼波滕奇志
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com