Document Detail

The effect of content desirability on subjective video quality ratings.
MedLine Citation:
PMID:  20653229     Owner:  NLM     Status:  MEDLINE    
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.
Philip Kortum; Marc Sullivan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Human factors     Volume:  52     ISSN:  0018-7208     ISO Abbreviation:  Hum Factors     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-07-26     Completed Date:  2010-08-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374660     Medline TA:  Hum Factors     Country:  United States    
Other Details:
Languages:  eng     Pagination:  105-18     Citation Subset:  IM; S    
Department of Psychology, Rice University, 6100 Main Street MS 25, Houston, TX 77005, USA.
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MeSH Terms
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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