Method for assessing perceptual quality

A threshold, digital image technology, applied in the field of full-reference objective of perceptual quality, can solve complex and other problems

Inactive Publication Date: 2010-12-08
THOMSON LICENSING SA
View PDF0 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of the ANN approach is that it can achieve very high performance in real time, while the disadvantage is the significant complexity of implementing this approach

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
  • Method for assessing perceptual quality
  • Method for assessing perceptual quality
  • Method for assessing perceptual quality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The invention will now be described in more detail. Reference is now made in more detail to the implementations of the invention shown in the drawings and equations.

[0030] At least one implementation provides a full-reference (FR) objective method of assessing the perceptual quality of decoded video frames in the presence of packet loss. Based on the edge information of the reference frame, the visibility of each image patch of the error propagated frame is calculated, and the distortion of each image patch is incorporated accordingly, and then the quality of the whole frame is evaluated.

[0031] Such a scheme addresses the situation that occurs when a video frame is encoded by the H.264 / AVC codec and an entire frame is lost due to a transmission error. Then, the video is decoded using advanced error concealment methods. Such an implementation provides a properly designed error calculation and combining method that exploits the spatial masking effects of distortio...

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 present invention relates to a full-reference (FR) objective method for assessing perceptual quality of decoded video frames in the presence of packet losses and coding artifacts. A method of assessing perceptual quality is provided. First, a value indicating an amount of distortion in a corresponding portion is accessed. Then, that value is classified as packet-loss distortion or coding-artifact distortion. Next, the classified value is modified to account for visibility differences of the human visual system, based on the classification, and then the modified values are combined for the multiple portions, to form a value indicating a total amount of distortion for the multiple portions.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Provisional Patent Application No. 61 / 11,525, filed January 18, 2008, based on the filing date of 35 U.S.C. § 119(e). technical field [0003] The present invention relates to a full-reference (FR) objective method for assessing perceptual quality, in particular to a full-reference (FR) objective method for assessing the perceptual quality of decoded video frames in the presence of packet loss and coding artifacts. Background technique [0004] A typical video communication system can be divided into three main components such as figure 1 As shown, the three main components are: encoding 310 of the input YUV sequence, transmission 320 , and decoding 330 to obtain the output YUV sequence 340 . Perceptual quality degradation occurs in the processed video frames due to lossy coding and packet loss in the suboptimal transmission channel in the first two components. Although the mean...

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): H04N17/00H04N19/89H04N19/895
CPCH04N19/00781H04N19/00933H04N19/00157H04N19/00242H04N17/004H04N19/00939H04N19/00266H04N19/002H04N19/14H04N19/154H04N19/166H04N19/172H04N19/61H04N19/89H04N19/895
Inventor 杨华刘涛艾伦·杰伊·斯坦
Owner THOMSON LICENSING SA
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