Title :
On the properties of subjective ratings in video quality experiments
Author_Institution :
Symmetricom, San Jose, CA, USA
Abstract :
Subjective video quality experiments are classical statistical measurements, and as such the mathematical tools for their analysis are well understood. However, there remain certain practical aspects that are rarely discussed, yet are essential to the design of efficient experiments. Using numerical simulations as well as real-life data from a multitude of subjective experiments, this paper attempts to shed more light on the distribution and variability of subjective ratings, the effects of discrete rating scales, and the number of subjects needed.
Keywords :
design of experiments; statistical distributions; video signal processing; design of experiment; discrete rating scale; mathematical tool; numerical simulation; statistical distribution; statistical measurement; subjective video quality experiment; Analytical models; Data analysis; Gaussian distribution; Guidelines; History; Numerical simulation; Quality assessment; Speech processing; Statistical distributions; Video signal processing; Mean Opinion Score (MOS); Subjective experiments; video quality measurement;
Conference_Titel :
Quality of Multimedia Experience, 2009. QoMEx 2009. International Workshop on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-4370-3
Electronic_ISBN :
978-1-4244-4370-3
DOI :
10.1109/QOMEX.2009.5246961
