[Bf-committers] Stereoscopy Implementation Proposal

[Harley Acheson]

Bartek,

> WRONG! When two view of an object are identical it tells your brain that
they are ON THE SCREEN.
> When positive parallax of an object equals the distance between viewer's
eyes - they appear at infinity.

To be fair, he's not wrong. But neither are you, since you are both talking
about different things...

You are right in that if you present the same image onto a *screen* in
front of the user then it will appear to be at the depth of the screen
itself.  Really no different than a normal 2D image on the screen and the
user can determine the distance to it using convergence.  Your right eye
has to look a little to the left, and the left eye rotates a little to the
right, the amount of which your brain uses to gauge the distance.

However, the presentation was talking about VR headsets like the Oculus
Rift.  Present an identical image to each eye on this type of headset and
you no longer have convergence to determine depth.  Each eye will stare
straight forward in this case and your brain will therefore place the image
at infinity as was mentioned in the presentation.

Cheers, Harley