Publication

Special Issue on Image and Video Quality Assessment

Stefan Winkler
2010
Journal Articles

Abstract

The aim of this special issue is to provide an overview of state-of-the-art IQA/VQA methods and to address new developments towards various directions. The issue starts with an invited paper that surveys an area of great current research interest, namely NR QA. It is followed by another survey paper, which examines audiovisual QA. The next two papers each propose a novel image quality metric, one based on gradient profiles, and the other on structural similarity. They are followed by a paper on perceptual deblocking. Video quality is the topic of the last two papers, one investigating spatio-temporal interactions in VQA, and the other the impact of visual attention on VQA.

Official source

https://infoscience.epfl.ch/entities/publication/7dd6342a-82ed-4b2e-a96a-4f5d997d404c

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Stefan Winkler
2010
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/7dd6342a-82ed-4b2e-a96a-4f5d997d404c

About this result

Related concepts (10)

Video quality

Video quality is a characteristic of a video passed through a video transmission or processing system that describes perceived video degradation (typically, compared to the original video). Video processing systems may introduce some amount of distortion or artifacts in the video signal that negatively impacts the user's perception of a system. For many stakeholders in video production and distribution, assurance of video quality is an important task. Video quality evaluation is performed to describe the quality of a set of video sequences under study.

Subjective video quality

Subjective video quality is video quality as experienced by humans. It is concerned with how video is perceived by a viewer (also called "observer" or "subject") and designates their opinion on a particular video sequence. It is related to the field of Quality of Experience. Measuring subjective video quality is necessary because objective quality assessment algorithms such as PSNR have been shown to correlate poorly with subjective ratings. Subjective ratings may also be used as ground truth to develop new algorithms.

Video

Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving media. Video was first developed for mechanical television systems, which were quickly replaced by cathode-ray tube (CRT) systems which, in turn, were replaced by flat panel displays of several types. Video systems vary in display resolution, aspect ratio, refresh rate, color capabilities and other qualities. Analog and digital variants exist and can be carried on a variety of media, including radio broadcasts, magnetic tape, optical discs, , and network streaming.

Related publications (3)

Special Issue on Image and Video Quality Assessment

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New Network and ATM Adaptation Layers for Interactive MPEG-2 Video Communications: A Performance Study Based on Psychophysics

Adaptive MPEG-2 Information Structuring

Perceptual Quality Metric as a Performance Tool for ATM Adaptation of MPEG-2 Based Multimedia Applications