A no-reference stereoscopic quality metric

Abstract

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Although a lot of progress has been made in the development of 2D objective video quality metrics, the area of 3D video quality metrics is still in its infancy. Many of the proposed metrics are simply adaptations of 2D quality metrics that consider the depth channel as an extra color channel. In this paper, we propose a 3D no-reference objective quality metric that estimates 3D quality taking into account spatial distortions, excessive disparity, depth representation and temporal information of the video. The metric is resolution and frame-rate independent. To estimate the amount of spatial distortion in the video, the proposed metric uses a blockiness metric. The contribution of motion and excessive disparity to 3D quality is calculated using a non-linear relative disparity measure and a frame-rate proportional motion measure. The metric's performance is verified against the COSPAD1 database. The MOS predicted using the proposed metric obtained good correlation values with the subjective scores. The performance was on average better than the performance of two simple 2D full reference metrics: SIMM and PSNR.