Dimension-based Quality Analysis and Prediction for Videotelephony

✍ Scribed by Falk Schiffner

• Publisher: Springer Nature
• Year: 2020
• Tongue: English
• Leaves: 169
• Edition: 1st ed. 2021
• Category: Library

✦ Synopsis

This book provides an in-depth investigation of the quality relevant perceptual video space in the domain of videotelephony. The author presents an extensive investigation and quality modeling of the underlying video quality dimensions and the overall quality. The author examines the underlying quality dimensions and describes a method for subjective evaluation as well as the instrumental estimation of video quality in videotelephony. The book presents a new subjective test method in the field of video quality assessment. Further, it explains the experimental examination of the underlying video quality dimensions and the subjective-based, as well as instrumental-based quality estimation.

• Provides an investigation of the underlying quality dimensions of video in videotelephony;
• Presents insights into a new subjective test method, standardized as ITU-T Rec. P.918;
• Includes insights into the subjective and instrumental video quality estimation.

 

✦ Table of Contents

Declaration
Acknowledgments
Publications
Abstract
Zusammenfassung
Contents
Acronyms
List of Figures
List of Tables
1 Introduction
1.1 Motivation
1.2 Objectives and Scope
1.2.1 Structure of the Thesis
References
2 Related Work and Theoretical Background
2.1 Audio-Visual Perception
2.1.1 Perception of Video
2.1.2 Perception of Audio
2.2 Signal Transmission
2.2.1 Video and Audio–Video Data Transmission
2.2.2 Transmission Errors
2.2.3 Recovery Mechanisms
2.3 Quality of Transmitted Video
2.3.1 Quality of Transmitted Video
2.3.2 Definition of Perceived Quality
2.3.3 Subjective Quality Judgment
2.3.4 Audio-Visual Integration
2.4 Subjective Testing
2.5 Dimension-Based Approach to Video Quality
2.5.1 Perceptual Features, Dimensions and Overall Quality
2.5.2 Dimension-Based Quality Models
2.5.3 Quality Dimensions and Overall Quality—Related Work
2.6 Experimental Paradigms
2.6.1 Semantic Differential and PCA
2.6.2 Paired Comparison and MDS
2.7 Instrumental Quality Estimation
2.7.1 Video Quality Estimation
2.7.2 Model Development
2.7.3 Video Quality Metrics
2.7.4 Video Quality Indicators
2.7.5 Acoustic Signals: Audio Versus Speech
2.7.6 Audio Quality Estimation
References
3 Quality Feature Space of Transmitted Video
3.1 Experimental Setup
3.1.1 Processing of the Test Material
3.1.2 Test Rooms
3.1.3 Test Participants
3.2 Semantic Differential—Test
3.2.1 Determination of the SD Attributes
3.2.2 SD Test—Test Procedure
3.2.3 Test Results and Interpretation
3.3 Paired Comparison—Test
3.3.1 PC Test—Procedure
3.3.2 Test Results and Interpretation
3.4 Synthesis—Perceptual Video Quality Space
References
4 Direct Scaling of Video Quality Dimensions
4.1 Introduction
4.2 Dimension Rating Scales
4.3 DSCAL—Test Procedure
4.4 DSCAL—Video Telephony
4.4.1 Video Quality Dimension Test I (VQDIM I)
4.4.2 Video Quality Dimension Test II (VQDIM II)
4.5 DSCAL—Other Video Contents
4.5.1 Video Quality Dimension Test III
4.6 DSCAL—Conclusion
References
5 Quality Modeling and Prediction
5.1 Dimension-Based Modeling of Overall Video Quality
5.1.1 Linear Quality Model
5.1.2 Quality Modeling—VQDIM I
5.1.3 Quality Modeling—VQDIM II
5.1.4 Quality Modeling—Other Video Content—VQDIM III
5.1.5 Quality Modeling—Conclusion
Reference
6 Instrumental-Dimension-Based Video Quality Modeling
6.1 Instrumental Dimension Prediction
6.1.1 Introduction
6.1.2 Determination of the Dimension Estimators
6.1.3 Estimation Models
6.2 Dimension-Based Estimation of Overall Video Quality
Reference
7 Audio and Video Quality Modeling
7.1 Introduction
7.2 Audio-Visual Quality Dimension Test
7.2.1 Test Participants and Procedure
7.2.2 AV-DIM—Data Analysis
7.2.3 Audio Quality and Prediction
7.2.4 Video Quality and Prediction
7.2.5 Overall Quality Prediction
7.2.6 Conclusion
References
8 Instrumental Estimation of Dimension-Based Audio-Visual Quality
8.1 Instrumental Audio Quality Estimation with DIAL
8.2 Synthesis—Instrumental-Dimension-Based Transmitted Speech and Video Quality
9 Conclusion and Future Work
9.1 Summary
9.2 Conclusion
9.3 Future Work
Reference
Appendix A Expert Survey and Pretest
Appendix B Test Instruction
Appendix C File Processing
C.1 File Processing—MATLAB Code
C.2 File Processing—Command-Line Commands