Re: [photo-3d] 3D vision

[Ron Beck <rbeck@xxxxxxxx>]

Roger,
Someone on the list has made something called the "Freeviewer's
Assistant" (or something like that).  If I remember right, it's a device
that you use to help merge parallel viewed stereo pairs by looking at
one side with the naked eye and the other with the assistant.  Perhaps
something like this would work.

I don't remember who made this but it might be worth a try.

Hope this helps,
Ron

ka2hsu@xxxxxxxx wrote:
> 
> Help wanted!
> 
> I need advice on how to build a viewer to enable my adult daughter to see
> objects in three dimensions. She has never been able to see normally in
> three dimensions, having been born with muscle adhesions on one eyeball.
> Several operations were performed to provide cosmetic correction.
> However, she has never been able to obtain enough muscular control of the
> affected eyeball to enable her to bring her eyes to focus simultaneously
> on an object. At this stage of the medical art, nothing can be done to
> correct this imbalance. Her normal, dominant, eye is correctable to 20/20
> with glasses and her non-used eye has 20/20 vision without correction. I
> have almost 50 years of  Realist photos that for which she has never
> experienced the 3D value.
> 
> Her three dimensional sense is created when she moves her head from side
> to side and views the relative motion of objects at different distances
> in space. Since subscribing to this list only a few months ago, I have
> become aware that single lens 3D photography is based on somewhat this
> same principle. It has occurred to me that I could bring her into the
> wonderful world of 3D viewing of photographs if I could create a viewer
> which has separate but fully maneuverable optical paths to stereo pairs
> and projections.
> 
> This is probably not of general interest so please contact me off-list if
> you can help with this special problem. A concerned father would be most
> grateful.
> 
> Rogers
> ka2hsu@xxxxxxxx