3 May 2000 Effect of eye position on the projected stimulus distance in a binocular head-mounted display
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Abstract
During vergence eye movements, the effective separation between the two eyes varies because the nodal point of each eye is offset from the center of rotation. As a result, the projected distance of a binocularly presented virtual object changes as the observer converges and diverges. A model of eye and stimulus position illustrates that if an observer converges toward a binocular virtual stimulus that is fixed on the display, the projected stimulus will shift outward away from the observer. Conversely, if the observer diverges toward a binocular virtual stimulus that is fixed on the display, the projected stimulus will shift inward. For example, if an observer diverges from 25 cm to 300 cm, a binocular virtual stimulus projected at 300 cm will shift inward to 241 cm. Accurate depiction of a fixed stimulus distance in a binocular display requires that the stimulus position on the display surface should be adjusted in real- time to compensate for the observer's eye movements.
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Jeffrey W. McCandless, Jeffrey W. McCandless, Stephen R. Ellis, Stephen R. Ellis, } "Effect of eye position on the projected stimulus distance in a binocular head-mounted display", Proc. SPIE 3957, Stereoscopic Displays and Virtual Reality Systems VII, (3 May 2000); doi: 10.1117/12.384478; https://doi.org/10.1117/12.384478
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