R. Hamberg et H. Deridder, CONTINUOUS ASSESSMENT OF PERCEPTUAL IMAGE QUALITY, Journal of the Optical Society of America. A, Optics, image science,and vision., 12(12), 1995, pp. 2573-2577
The study addresses whether subjects are able to assess the perceived
quality of an image sequence continuously. To this end, a new method f
or assessing time-varying perceptual image quality is presented by whi
ch subjects continuously indicate the perceived strength of image qual
ity by moving a slider along a graphical scale. The slider's position
on this scale is sampled every second. In this way, temporal variation
s in quality can be monitored quantitatively, and a means is provided
by which differences between, for example, alternative transmission sy
stems can be analyzed in an informative way. The usability of this met
hod is illustrated by an experiment in which, for a period of 815 s, s
ubjects assessed the quality of still pictures comprising time-varying
degrees of sharpness. (C) 1995 Optical Society of America