Optimum Image Quality Assessment for 3D Perception of Stereoscopic Image Generated from Upsampled Depth Map

Depth map upsampling is an approach to increase the spatial resolution of depth maps obtained from ToF (Time of Flight) cameras. Since depth map quality directly affects 3D perception of stereoscopic image, applying different depth upsampling methods to a low resolution depth map causes a variety of perceptions of the stereoscopic images. In this paper, we investigate the relation between objective measurements and 3D subjective evaluation. For the former, diverse fullreference and no-reference quality assessment tools are applied to measure the quality of depth maps obtained. Subjective evaluation is carried out by DSCQS test on the stereoscopic images. We utilize several upsampling methods to achieve different depth map qualities of a scene as our experiment samples. Finally, the quantitative value of each measurement is compared with a subjective assessment using three correlation coefficients. The experiment shows promising results that could help to select the most appropriate objective quality assessment tool(s) for stereoscopic image quality measurement.