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

Error resilient mode decision in scalable video coding

A coding mode and video coding technology, applied in digital video signal modification, TV, electrical components, etc.

Inactive Publication Date: 2009-04-01
NOKIA CORP
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, there is no mechanism to perform macroblock mode selection in scalable video coding that would bring the encoded scalable video stream back to the target loss rate

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
  • Error resilient mode decision in scalable video coding
  • Error resilient mode decision in scalable video coding
  • Error resilient mode decision in scalable video coding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The present invention provides a mechanism to perform macroblock mode selection for enhancement layer pictures in scalable video coding to increase reproduced video quality under error-prone conditions. The mechanism includes the following elements:

[0040] - a distortion estimator for each macroblock, which acts on channel errors such as packet loss or errors in the video segment, which takes into account potential error propagation in the reproduced video;

[0041] - a Lagrangian multiplier selector according to the estimated or transmitted channel loss rate for the different layers; and

[0042] - Mode decision algorithm, based on coding parameters (i.e. all macroblock coding parameters affecting the number of bits encoded in the macroblock, including motion compensation method, quantization parameter, macroblock partitioning method), estimated distortion due to channel errors and updated Lagrangian multipliers to choose the best model.

[0043] According to the f...

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

An encoder for use in scalable video coding has a mechanism to perform macroblock mode selection for the enhancement layer pictures. The mechanism includes a distortion estimator for each macroblock that reacts to channel errors such as packet losses or errors in video segments affected by error propagation; a Lagrange multiple selector for selecting a weighting factor according to estimated or signaled channel error rate, and a mode decision module or algorithm to choose the optimal mode based on encoding parameters. The mode decision module is configured to select the coding mode based on a sum of the estimated coding distortion and the estimated coding rate multiplied by the weighting factor.

Description

technical field [0001] The present invention relates generally to scalable video coding, and in particular to error resilience performance of coded scalable streams. Background technique [0002] During the last decade, video compression standards have been developed and formed into technology for today's digital television broadcasting systems. The focus of all current video compression standards is on the bitstream syntax and semantics, and the decoding process. There are also non-normative guidance documents, often called test models, that describe encoder mechanisms. They specifically take into account bandwidth requirements and data transfer rate requirements. Storage and broadcasting media developed as targets by predecessors include digital storage media such as DVD (Digital Versatile Disc) and television broadcasting systems such as digital satellite (for example, DVB-S: Digital Video broadcast - satellite), cable (eg DVB-C: Digital Video Broadcasting - Cable), an...

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 Applications(China)
IPC IPC(8): H04N7/64H04N19/89
CPCH04N19/00854H04N19/00278H04N19/00242H04N19/00321H04N7/26244H04N7/26154H04N19/00018H04N7/26686H04N19/00351H04N7/26308H04N19/00442H04N7/26234H04N19/00418H04N7/26297H04N7/26021H04N19/00175H04N19/176H04N19/147H04N19/103H04N19/166H04N19/187H04N19/19H04N19/65H04N19/29H04N19/34H04N19/89
Inventor 郭宜Y-K·王李厚强
Owner NOKIA CORP
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