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

SSIM (structural similarity) based HEVC (high efficiency video coding) video coding rate distortion optimizing and rate control algorithms

A technology of rate-distortion optimization and video coding, which is applied in the field of video coding rate control and can solve problems such as increasing the complexity of the coding end

Inactive Publication Date: 2015-07-22
FUZHOU UNIV
View PDF5 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But if the encoder tries all possible QP values, it will greatly increase the complexity of the encoding end

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
  • SSIM (structural similarity) based HEVC (high efficiency video coding) video coding rate distortion optimizing and rate control algorithms
  • SSIM (structural similarity) based HEVC (high efficiency video coding) video coding rate distortion optimizing and rate control algorithms
  • SSIM (structural similarity) based HEVC (high efficiency video coding) video coding rate distortion optimizing and rate control algorithms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0090] Use H.265 to encode an uncompressed original video. In the bit rate control process, first preset the target bit rate. For each coding unit, this algorithm first uses the quadratic R-Q model to calculate the quantization parameter QP; other encoding The parameters are obtained by rate-distortion optimization using SSIM; after the encoding is completed, the video sequence feature parameters α and β are updated and used for rate control of the next coding unit. Compared with the original encoding algorithm of H.265, this algorithm can further reduce the bit rate while maintaining the same image quality, reduce the data storage space and transmission bandwidth while ensuring the video quality, and the obtained bit stream is more stable. Fully compatible with H.265 standard.

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 SSIM (structural similarity) based HEVC (high efficiency video coding) video coding rate distortion optimizing and rate control algorithms. The SSIM based HEVC video coding rate distortion optimizing algorithm includes: adopting an SSIM based video evaluation method, and calculating video distortion DSSIM to acquire a lagrangian multiplier lambda in a rate distortion optimization model; calculating rate distortion rate in video coding through the lambda. The rate control algorithm adopts a secondary R-Q model in the video coding to represent relation between texture residual bits and edge information code rate in video coding bit streams, coding parameters QP in the rate distortion model and update values of video sequence characteristic parameters of alpha and beta during coding are calculated. With the algorithms, code rate can be further lowered under the condition that image quality is kept constant, and the acquired bit streams are smoother.

Description

technical field [0001] The invention relates to the technical field of video coding rate control, in particular to an SSIM-based HEVC video coding rate-distortion optimization and rate control algorithm. 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, filtering, and entropy coding. Careful optimization and improvement have been carrie...

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): H04N19/147H04N19/19
Inventor 郑明魁苏凯雄叶宇煌杨秀芝兰诚栋黄博
Owner FUZHOU 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