| The effect of content desirability on subjective video quality ratings. | |
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MedLine Citation:
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PMID: 20653229 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The purpose of this study was to examine the impact of the desirability of content on viewers' ratings of subjective video quality. BACKGROUND: Most subjective video quality studies use short-duration clips that are specially designed to exercise the encoding algorithms and do not consider the desirability of the content as a variable. METHOD: In four studies, we employed a total of 100 participants and 180 movie clips encoded at nine levels from 550 kbps up to DVD quality. Participants viewed clips that were 2 min in length and then were asked about video quality of the clips and desirability of the movie content. RESULTS: The results of these studies show that there is a strong correlation between the desirability of movie content and subjective ratings of video quality. This strong relationship holds across a wide range of encoding levels and movie content when that content is viewed under longer, more naturalistic viewing conditions. CONCLUSION: The effects of content should be considered when evaluating the subjective quality of encoded video content, as these effects can be as large as those seen between low- and high-quality encodings. APPLICATION: Researchers and practitioners trying to determine acceptable levels of video quality for actual consumption by consumers may find that the results and methods described here allow for a more accurate assessment of levels of video quality that are acceptable in a fielded service. |
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Authors:
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Philip Kortum; Marc Sullivan |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Human factors Volume: 52 ISSN: 0018-7208 ISO Abbreviation: Hum Factors Publication Date: 2010 Feb |
Date Detail:
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Created Date: 2010-07-26 Completed Date: 2010-08-24 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0374660 Medline TA: Hum Factors Country: United States |
Other Details:
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Languages: eng Pagination: 105-18 Citation Subset: IM; S |
Affiliation:
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Department of Psychology, Rice University, 6100 Main Street MS 25, Houston, TX 77005, USA. pkortum@rice.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Female Humans Male Middle Aged Motion Pictures as Topic* Video Recording* Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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