Hi Nekar,

I am not a photographer (nor very advanced with pov camera) so I could not give
you any _technical_ advice but I think for this to work you'll either need to
move the camera *waaay* back and use a narrow camera angle, or use a different
type of projection because the radial angular perspective distortion ruins the
effect somewhat.

When looking at the image "wall-eyed" I notice that there is a little depth
information near the centre of the image (i.e. it works pretty well for the
sphere and its reflection), but as you get further out to the edges (and
particularly noticeable on the horizontal lines), the curvature distortion is
misaligned between the two images and the brain really struggles to find a
correlation on the two halves, and it becomes very 'distracting'.

I think it is perhaps because of the symmetrical effect in the curvature (it
looks like the distortion is 'mirrored'). If you could find a way to not mirror
the warp/normal but instead clone it from one side of the vertical axis to the
other (-x to +x) that might work. I'm sorry that I don't know enough about the
warp or the spherical pattern to actually help you HOW to do this. This is all
just my observation.

Frankly I am very impressed that it works! I think your theory is more than
halfway there and with some fine-tuning could have application.


Have you thought about modelling how a real stereoscopic camera might work? I.e.
four planar mirrors, two for each 'eye', angled just right so as to split and
spatially separate the viewport down the middle?

E.g. one half of the rays would hit the first mirror and bounce off to the left,
then get reflected back to the intended focal point, only their origin would be
slightly left of the camera's location, and the other half would hit the third
mirror and bounce off to the fourth, and be reflected back to the same focal
point, this time from the right. You should be able to use some geometry to
figure out the angle required for each of the two mirrors on one side, then
just flip it for the other side. Or, maybe you wanted to avoid this altogether
and try another method! :)


Anyway I hope I have helped in some small way, if you're not totally confused by
my non-technical understanding of this... :)


sooperFoX


"Nekar Xenos" <nek### [at] gmailcom> wrote:
> Here's a different approach to stereoscopic imaging without having to parse
> twice or use the clock setting. I don't know enough about lenses but I think
> someone might be able to tweak this to work correctly. I used a repeated
> spherical camera normal to get 2 images.

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