Abstract
The relationship between event-related potentials (ERPs) and
image quality variation was studied in this paper. Two independent
image attributes, white level (WL) and color saturation (CS), were
used as two alterable parameters for changing image quality. The corresponding
images were presented to subjects, and subjects were asked to indicate
whether they had perceived a quality change. The results showed that
the perceivable impairment of image quality elicited measurable ERPs
(the so-called P300 component) at latency of about 300–550 ms
for all subjects. The more degraded the image quality, the earlier
and higher the P300 is rising. The latency and amplitude of ERPs changed
with the image quality caused by different WL and CS logarithmically.
In addition, the peak amplitudes and latency are highly correlated
with the rating results obtained in rating experiment. The corresponding
regression functions matched well, which proved the reasonability
of utilizing ERPs in assessing image quality.
© 2016 IEEE
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