22 September 2015 Optimal sequence duration for subjective video quality assessment
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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, Felix J. Mercer Moss, Ke Wang, Ke Wang, Fan Zhang, Fan Zhang, Roland Baddeley, Roland Baddeley, David Bull, David Bull, } "Optimal sequence duration for subjective video quality assessment", Proc. SPIE 9599, Applications of Digital Image Processing XXXVIII, 959915 (22 September 2015); doi: 10.1117/12.2190893; https://doi.org/10.1117/12.2190893
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