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Abstract
AbstractColor asymmetry of the left and right views is a common phenomenon in the stereoscopic three‐dimensional (S3D) display, which can lead to visual discomfort. Due to visual discomfort is a subjective sensation, we hypothesize that variations of pupil diameter while viewing S3D images are related to experienced visual comfort. To test this hypothesis, we conducted eye‐tracking experiments on humans viewing hue‐asymmetric stereoscopic images while simultaneously collecting their judgment scores of experienced visual discomfort. From the collected eye‐tracking data, pupil diameter variations were extracted by a normalization formula. Results show that change in hue asymmetry levels causes a significant change in pupil diameter variations. There was a strong negative correlation between the pupil diameter variation and the visual comfort assessment (VCA) score, and the Pearson's r = −0.8936. We conclude that as the hue asymmetric level of stereoscopic image increases, the pupil diameter of the participant becomes smaller and the visual comfort decreases. A visual comfort predication model was fitted well using pupil diameter variation. It predicts that when the pupil diameter variation exceeds 20.57%, the brain feels visual discomfort.
Published Version
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