[visionlist] [cvnet] Trying to demonstrate stereoscopic vision remotely

[Lester Loschky]

Thanks, Ben!  That is super helpful!  For students who cannot learn to free
fuse, this is a fantastic low tech method.  I'm going to suggest it to my
students.

For the demo, I wanted to use a random dot stereogram, to camouflage the
image.  I picked one from half of an artwork by Alphons Schilling, entitled
"8 planes, 2 planes" (1973).  I used the "2 planes" pair of a triple image
work.  In order to make it work in a mirror, I had to mirror flip the right
eye image.  I've then morphed it using PhotoShop onto your excellent
figure, and made note of the revisions.  I show it below, and have attached
the file for anyone interested.

[image: Stereo Demo Revised from Backus Vivid Vision [mirror stereo pair
demo].png]

Best wishes,

Les

On Sat, Mar 21, 2020 at 3:49 PM Ben Backus <ben.backus at gmail.com> wrote:

> Les et al,
> How about something like this?
> Please use the attached powerpoint file any way you like.
>
>
> [image: image.png]
>
>
> On Sat, Mar 21, 2020 at 9:21 AM Lester Loschky <loschky at ksu.edu> wrote:
>
>> Thanks, Christopher!  I had listed random dot autosterograms as one
>> option, and noted, as you did, that many people unfortunately have great
>> difficulty learning to under-converge or over-converge.  However, your
>>
>  ...
> On Fri, Mar 20, 2020 at 11:51 PM Christopher Tyler <cwtyler2020 at gmail.com>
> wrote:
>
>> You could try autostereograms, such as the examples on my Scholarpedia
>>> page <http://www.scholarpedia.org/article/Autostereogram>.  Not
>>> everyone can get them, but they're pretty effective for those who can.
>>>
>>> On Fri, Mar 20, 2020 at 9:35 PM Lester Loschky <loschky at ksu.edu> wrote:
>>>
>>>> Hi Everybody,
>>>>
>>>> If you teach Sensation and Perception, and are currently preparing to
>>>> teach it remotely, you may have the same question I have: how can you
>>>> demonstrate stereovision remotely?
>>>>
>>> ...
>
> --
> Ben Backus
> CSO, Vivid Vision Inc (ben at seevividly.com)
> Assoc. Prof. Emeritus, SUNY College of Optometry (bbackus at sunyopt.edu)
> <http://poseidon.sunyopt.edu/Backuslab/>
>


-- 
Lester Loschky
Professor
Associate Director, Cognitive and Neurobiological Approaches to Plasticity
Center
Department of Psychological Sciences
471 Bluemont Hall
1114 Mid-Campus Dr North
Kansas State University
Manhattan, KS  66506-5302
email: loschky at ksu.edu
research page: https://www.k-state.edu/psych/research/loschkylester.html
lab page: http://www.k-state.edu/psych/vcl/index.html
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