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Hanhart, Philippe; Korshunov, Pavel; Ebrahimi, Touradj (2014)
Languages: English
Types: 0038
Subjects: 3D, multiview video plus depth, compression, subjective quality assessment, crowdsourcing, free-viewpoint video
Crowdsourcing is becoming a popular cost effective alternative to lab-based evaluations for subjective quality assessment. However, crowd-based evaluations are constrained by the limited availability of display devices used by typical online workers, which makes the evaluation of 3D content a challenging task. In this paper, we investigate two possible approaches to crowd-based quality assessment of multiview video plus depth (MVD) content on 2D displays: by using a virtual view and by using a free-viewpoint video, which corresponds to a smooth camera motion during a time freeze. We conducted the crowdsourcing experiments using seven MVD sequences encoded at different bit rates with the upcoming 3D-AVC video coding standard. The results demonstrate high correlation with subjective evaluations performed using a stereoscopic monitor in a controlled laboratory environment. The analysis shows no statistically significant difference between the two approaches.

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