Visual discomfort induced by fast salient object motion in stereoscopic video

This paper investigates visual discomfort induced by fast motion of salient object in a stereoscopic video. We have conducted a subjective assessment to investigate the degree of visual discomfort caused by motion characteristics of a controlled graphics object in a video scene. As results of the subjective assessment, we observe the changes of the degree of visual discomfort with varying velocity and direction of object motion. In order to verify the acceptability of our observation for real stereoscopic 3D videos, we exploit the concept of visual saliency to define the salient object motion severely affecting the degree of visual discomfort in a video scene. The salient object motion feature is extracted and a visual comfort model is derived from our observation. Then we predict the degree of visual discomfort by using the extracted motion feature and the visual comfort model. We have conducted a subjective test to compare the predicted visual comfort score with actual subjective score. The experiment results show that the predicted visual comfort score correlates well with the actual subject score.