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22 September 2015 Optimal sequence duration for subjective video quality assessment
Felix J. Mercer Moss, Ke Wang, Fan Zhang, Roland Baddeley, David Bull
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Proceedings Volume 9599, Applications of Digital Image Processing XXXVIII; 959915 (2015) https://doi.org/10.1117/12.2190893
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States
Abstract
This paper reports an empirical investigation into increasing the efficiency of subjective data collection by reducing the length of test sequences below the recommended 10 seconds. Twenty-four observers viewed four 10 second reference sequences, in addition to four truncated versions of each: 7 seconds; 5 seconds; 3 seconds and 1.5 seconds. Results indicated that, compared to the 10 second sequences, the ability of observers to identify compression artefacts was significantly reduced only when viewing the 1.5 second sequences. These results indicate that, when using the DSCQS methodology, a significant benefit in the efficiency of subjective data collection can be gained by reducing the length of test sequences to potentially as low as 3 seconds, without a significant impact upon reliability.
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Felix J. Mercer Moss, Ke Wang, Fan Zhang, Roland Baddeley, and David Bull "Optimal sequence duration for subjective video quality assessment", Proc. SPIE 9599, Applications of Digital Image Processing XXXVIII, 959915 (22 September 2015); https://doi.org/10.1117/12.2190893
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KEYWORDS
Video
Video compression
Distortion
Cameras
Data modeling
Databases
Atmospheric modeling
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