HEVC quantization parameter optimizing method based on total code rate and information entropy model

A technology for quantizing parameters and optimizing methods, which is used in image communication, digital video signal modification, electrical components, etc.

Active Publication Date: 2014-12-03
福州视驰科技有限公司
View PDF4 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, for video sequences with different contents, these two parameters should be adaptively

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
  • HEVC quantization parameter optimizing method based on total code rate and information entropy model
  • HEVC quantization parameter optimizing method based on total code rate and information entropy model
  • HEVC quantization parameter optimizing method based on total code rate and information entropy model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The technical solutions involved in the patent of the present invention are set forth below in conjunction with the accompanying drawings and design principles.

[0032] In HEVC, the total code rate after encoding is the sum of the residual information entropy and the side information code rate. Therefore, in addition to the residual information, the side information also has a greater impact on the total code rate, especially at low code rates. When the bit rate is high, the quantization step size is usually Relatively small, the total code rate R is relatively close to the residual code rate H; while at low code rates, the quantization step size If the value is relatively large, the difference between the total code rate R and the residual code rate H is relatively large, and the side information code rate is relatively significant at this time.

[0033] Transformed residuals usually follow a zero-mean Laplace distribution, assuming is the Laplace distribution pa...

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 HEVC quantization parameter optimizing method based on a total code rate and information entropy model. The total code rate and information entropy model is used in the code rate control process to adjust the quantization parameters (QP)s in the HEVC coding process according to different sequence characters of different videos, the purposes of improving the rate-distortion performance and controlling the code rate more accurately are achieved, and the coding complexity cannot be obviously affected. The quantization parameter optimizing method is also suitable for calculating the QPs of H.264/AVC, AVC and other video coding standards.

Description

technical field [0001] The patent of the present invention relates to a quantization parameter optimization method based on the H.265 / MPEG-H HEVC (High Efficiency Video Coding) video coding standard, in particular to a precise correction method for the video coding rate control process. Background technique [0002] In video coding and transmission applications, the new generation of high-performance video coding standard H.265 / MPEG-H HEVC (High Efficiency Video Coding) is a video coding standard established by two international standardization organizations, ISO-IEC / MPEG and ITU-T / VCEG. Developed by the Joint Development Team (JCT-VC), compared with H.264 / AVC, HEVC can reduce the bit rate by half at the same visual quality. [0003] As a new-generation video coding standard, HEVC still belongs to the hybrid coding framework of prediction and transformation. It also includes coding modules such as intra prediction, inter prediction, orthogonal transformation, quantization, f...

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): H04N19/124H04N19/147H04N19/19H04N19/142
Inventor 郑明魁苏凯雄杨秀芝兰诚栋黄博
Owner 福州视驰科技有限公司
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