Depth cues
Depth cues are psychological factors that aid in seeing how far away something is, or how far away each point on something is.
There are many depth cues, including motion parallax, ocular parallax, vergence of the eyes (the angle that the eyes make relative to each other), and accommodation of the eye (the focus of each eye).
Most VR headsets only reproduce binocular disparity-related depth cues. They operate at a fixed focal depth which means that accommodation of the eye is fixed and does not change. This results in a vergence-accommodation conflict.
Other depth cues include relative size, meaning that an object looks smaller the further away it is, and relative motion, meaning that objects that are further away tend to move more slowly.[1]
When designing an AR or VR headset, the depth cues of ocular parallax and accommodation need to be taken into account if the developer of the headset wants the users to be able to run applications that require high visual fidelity closer than one meter away from the user.
Cues that only need one eye[edit]
- Accommodation
- Relative size
- Relative motion (Motion parallax)
- Monocular parallax
Dependent on both eyes[edit]
References[edit]
- ↑ Vergence-Accommodation Conflict: Facebook Research Explains Why Varifocal Matters For Future VR. https://www.youtube.com/watch?v=YWA4gVibKJE