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From: dbg@sinix.UUCP (David George)
Newsgroups: sci.psychology,comp.graphics.visualization
Subject: Re: Real 3D PHOTOCOPY - black & white - no glasses...
Keywords: stereocopic images
Message-ID: <1991May22.110439.8929@sinix.UUCP>
Date: 22 May 91 11:04:39 GMT
Article-I.D.: sinix.1991May22.110439.8929
References: <4354.2816ba40@iccgcc.decnet.ab.com> <72100@microsoft.UUCP>
Organization: SNI AG Muenchen, STO XS
Lines: 39

In article <72100@microsoft.UUCP> a-peterb@microsoft.UUCP (Peter BRUINSMA) writes:
>
>What you were looking at was a pair of stereoscopic images. These used to
>be a very common form of entertainment during the beginning of this century.
>Hundreds of thousands of viewers were sold. They consisted of a holder 
>in which you could mount your stereo pair print, and two  holes or lenses, 
>fixed at a certain distance. The idea is that each eye sees a scene at a 
>slightly different angle. If you look at a scene with only one eye at a 
>time you will see that everything shifts position. If you were to take two 
>photographs at about 5 to 10 inches apart, and you mounted the prints
>side by side (left image on the left, right image on the right) then you 
>could view these using a special purpose viewer. If you don't have such a 
>viewer then you could train your brain/eyes to 'free view' the images. 
>It is for that purpose that those two black dots were placed above the images.
>All you have to do is merge them, as you have already found out.
> 
>Any program in which you can specify a viewpoint for viewing a 3D scene
>and lets you subsequently print it would allow you to view the scene twice,
>each, say, 10 inches apart from the other. I don't know anything out there
>though that will do that... 
>  
>I heard of chemical models rotating and that sort of thing. Usually those
>really nice workstations use LCD shutter glasses which allow you to see the
>left and right images sequentially in color etc.  
>
>Peter Bruinsma
>a-peterb@microsoft.UUCP
>

I saw a similar system demonstrated on a BBC Science Program (Tomorrows
World) about 10 years ago.  They used an interlaced monitor and displayed
one view on one half frame and another slightly different view on the other.
The effect was a 3d image.  This was useful where the operator required
spatial information... such as remote controlling a robot, the robot being
mounted with two cameras.  Anyone seen any development of this system?

It was only black and white.

David.