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

A H.264 Frame Layer Code Rate Control Method Based on Structural Similarity Coefficient

A technology of structural similarity and control method, which is applied in the field of video coding, can solve the problems of assigning code rate without subjective characteristics, and the image does not necessarily conform to the subjective characteristics of human eyes, etc., so as to improve the average SSIM value, good subjective video quality, and improve Effect of SSIM value

Active Publication Date: 2016-03-30
NANJING UNIV OF INFORMATION SCI & TECH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above method mainly allocates the code rate from the complexity of the natural image content, and there are some shortcomings: the code rate is allocated according to the objective characteristics of the image content, and the code rate is not allocated according to the subjective characteristics of the human eye, and the obtained image does not necessarily conform to the subjective characteristics of the human eye. characteristic

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
  • A H.264 Frame Layer Code Rate Control Method Based on Structural Similarity Coefficient
  • A H.264 Frame Layer Code Rate Control Method Based on Structural Similarity Coefficient
  • A H.264 Frame Layer Code Rate Control Method Based on Structural Similarity Coefficient

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0030] The frame layer code rate control method of H.264 of the present invention specifically comprises the following steps:

[0031] A, calculate the remaining number of bits of the i-th GOP layer uncoded frame according to the following formula:

[0032] T r ( n i , j ) = u ( n i , 1 ) ...

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 relates to an H.264 frame layer code rate control method based on a structural similarity coefficient. The structural similarity theory is utilized for distributing the H.264 frame layer code rate. The method comprises the following steps that A, the target bit number of the remaining frame is calculated; B, the structural similarity coefficient is calculated; C, the target bit number of the current frame is determined according to the structural similarity coefficient; D, a quantization parameter is calculated; and E, rate-distortion optimization is carried out. The method is characterized in that the structural similarity coefficient is defined, and the target bit number of the frame is determined on the basis of the defined structural similarity coefficient. The H.264 frame layer code rate control method has the advantages that the code rate can be more accurately controlled, and in addition, the structural similarity of the video output sequence can be improved, so that the better subjective video quality is obtained.

Description

Technical field: [0001] The invention belongs to the technical field of video coding, and relates to an H.264 frame layer code rate control method based on structural similarity. Background technique: [0002] In the past ten years, video communication technology has been developed rapidly and widely used, and a series of video coding standards have been formulated. Existing international video coding standards mainly include MPEG-1, MPEG-2, MPEG-4 (referring to document: ISO / IEC13818-2.Informationtechnology-GenericcodingofmovingpicturesandassociatedaudioPart2:Video[S]. / IEC14496-2.Informationtechnology-Genericcodingofaudio-visualobjectsPart2:Visual[S].1998.), and the H.26x series launched by the International Telecommunication Union Standardization Department (ITU-T), such as H.261 (see literature: ITU-T. DraftITU-T Recommendation H.261.Videocodecforaudiovisualservices, atpx64kbps [S], 1993.), H.263 (see literature: ITU-T.DraftITU-T RecommendationH.263.Videocodingforlowbit...

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): H04N19/146H04N19/61H04N19/70
Inventor 陈晓顾冬珏
Owner NANJING UNIV OF INFORMATION SCI & TECH
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