Assessment of the Quality of Video Sequences Performed by Viewers at Home and in the Laboratory

Author:

Klink Janusz1ORCID,Brachmański Stefan2,Łuczyński Michał2ORCID

Affiliation:

1. Department of Telecommunications and Teleinformatics, Faculty of Information and Telecommunication Technology, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

2. Photonics and Microsystems Department of Acoustics, Multimedia and Signal Processing, Faculty of Electronic, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Abstract

The paper presents the results of subjective and objective quality assessments of H.264-, H.265-, and VP9-encoded video. Most of the literature is devoted to subjective quality assessment in well-defined laboratory circumstances. However, the end users usually watch the films in their home environments, which may be different from the conditions recommended for laboratory measurements. This may cause significant differences in the quality assessment scores. Thus, the aim of the research is to show the impact of environmental conditions on the video quality perceived by the user. The subjective assessment was made in two different environments: in the laboratory and in users’ homes, where people often watch movies on their laptops. The video signal was assessed by young viewers who were not experts in the field of quality assessment. The tests were performed taking into account different image resolutions and different bit rates. The research showed strong correlations between the obtained results and the coding bit rates used, and revealed a significant difference between the quality scores obtained in the laboratory and at home. As a conclusion, it must be underlined that the laboratory tests are necessary for comparative purposes, while the assessment of the video quality experienced by end users should be performed under circumstances that are as close as possible to the user’s home environment.

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

Reference49 articles.

1. (2020). Methodologies for the Subjective Assessment of the Quality of Television Images (Standard No. ITU-R BT 500-14).

2. Comparison of Full Factorial and Optimal Experimental Design for Perceptual Evaluation of Audiovisual Quality;Fela;J. Audio Eng. Soc.,2023

3. QoE Modeling for HTTP Adaptive Video Streaming–A Survey and Open Challenges;Barman;IEEE Access,2019

4. Mean squared error: Love it or leave it? A new look at Signal Fidelity Measures;Wang;IEEE Signal Process. Mag.,2009

5. The accuracy of PSNR in predicting video quality for different video scenes and frame rates;Ghanbari;Telecommun. Syst.,2012

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3