Foveated mean squared error — a novel video quality metric (CROSBI ID 161041)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Rimac-Drlje, Snježana ; Vranješ, Mario ; Žagar, Drago
engleski
Foveated mean squared error — a novel video quality metric
Efficiency of a video coding process, as well as accuracy of an objective video quality evaluation can be significantly improved by introduction of the human visual system (HVS) characteristics. In this paper we analyze one of these characteristics ; namely, visual acuity reduction due to the foveated vision and object movements in a video sequence. We propose a new video quality metric called Foveated Mean Squared Error (FMSE) that takes into account a variable resolution of the HVS across the visual field. The highest visual acuity is at the point of fixation that falls into fovea, an area at retina with the highest density of photoreceptors. Visual acuity decreases rapidly for image regions which are further with respect to the fixation point. FMSE also utilizes the effect of additional spatial acuity reduction due to motion in a video sequence. The quality measures calculated by FMSE have shown a high correlation with experimental results obtained by subjective video quality assessment.
foveated vision; retinal image velocity; spatio-temporal activity; subjective quality assessment; video quality metric
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Podaci o izdanju
49 (3)
2010.
425-445
objavljeno
1380-7501
10.1007/s11042-009-0442-1