Re: Re: one eyed 3D

[P3D Gabriel Jacob <jacob@xxxxxxxxxxxxxx>]

>Note that the key to Pulfrich effect is the fact that the eye/brain processes
>darker things more slowly and thus has nothing to do with motion parallax.

True. :-)

>I read somewhere that many birds that have their eyes located on the sides of
>their heads frequently move their heads about to get some depth peception.  So
>I tried this.  I walked around the house with one eye covered while swaying
>left and right. (inside the house so nobody saw me :-) I was amazed that in a
>few seconds I learned to judge depth and was freely moving about.  I wish the
>doctor had told me this trick when I had to drive a car with an eye patch.
>
>Kirk

Yes, even humans do it, instinctively. People on wide open spaces, such as
on mountain ranges, move their heads left and right to try to judge the
vast distances. This of course is due to motion parallax, as you mention.

But your comment about the birds, makes me wonder another aspect. If the
bird's eyes are located on the sides, can they see in stereo. I am thinking
there might not be any overlap, between the corresponding eyes.

Gabriel


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