P3D Re: PHOTO-3D digest 3090

[ZEXIAN SHEN <Z.SHEN@xxxxxxxxxxxxxxxx>]

> 
> ------------------------------
> 
> Date: Fri, 27 Nov 1998 13:48:43 -0500
> From: Brian Reynolds <reynolds@xxxxxxxxx>
> To: photo-3d@xxxxxxxxxxxxxxxxx
> Subject: P3D Re: RE: Barrier grid samples
> Message-ID: <19981127134843.A6667@xxxxxxxxx>
> 
> ron labbe wrote:
> >
> > Unfortunately, this autostereogram suffers from the usual symptoms
> > of this format: double images and pseudoscopic positions. This
> > particular (flower) image had relatively few images interlaced,
> > therefore narrowing the cleanest viewing position. In fact, there
> > was no position I could find where I did not see a double image. I
> > cannot say this is better than other lenticular or barrier grid
> > images I've seen... These are problems which have plagued this type
> > of image and is why they have never been used extensively, in my
> > opinion...
> >
> Brian Reynolds wrote:

> I saw several of these samples at the recent stereo dinner here in
> NYC.  The viewing conditions weren't that great (no lightbox, just
> holding them up to the restaurant's track lighting).  In my opinion
> the flower image was one of the poorer ones (for the reasons Ron
> mentions), and wouldn't be what I would judge these with.  My favorite
> (and the one that I think worked the best) was of several cans of Coke
> (with Chinese labels) that appear to have been tossed in the air.
> 
> As with many forms of photography, it is very difficult to judge the
> merits of a technique (or technology) from only one sample.  I believe
> each of the samples I saw were done by different photographers, of
> different subjects (the flower still life, cans of Coke for an
> advertisement, a fashion/catalog shot, etc.) using different equipment
> to capture the image.  Not all of the samples I saw were successful.
> Without better viewing equipment I'd say the Coke shot was the most
> succesful.
> 
> Personally I'm waiting for the Stereo Jet system to be ready so that I
> can have prints made of some of my MF stereo honeymoon pictures.
> 
> --
> Brian Reynolds                  | "Dee Dee!  Don't touch that button!"
> reynolds@xxxxxxxxx              | "Oooh!"
> http://www.panix.com/~reynolds  |    -- Dexter and Dee Dee
> NAR# 54438                      |       "Dexter's Laboratory"
> 
> ------------------------------
>Actually, our barrier technology has improved much the problem of the double images of lenticular. 

When an experienced photographer arranges a good structure for a
picture, such as arrange the positions of the several major objects in
the reasonable range of focal lengths (the background does not matter,
even in unlimited distance, only if it is relatively clear, then the
photo could show a truely 3 d and deep background), we could process a 3
D photo which is hardly found the double image due to our technological
and experienced strengths. For example, the "tiger" and "table" which
Boris and John Baired viewed are hardly found the double images. And the
three samples of living objects(1 to 4 people) we made for Coca-cola are
hardly found the double images. And the "shoes" sample(about 40"*40")
which is being shown in the Duggal Color Projects in NYC is hardly found
the double images, and so on. It is very interesting, when the Duggal's
salespersons are showing the sample to their clients, they always put
their hands at one hole of the shoes on the photo, the strong 3 D
effects produce a true shoes image! So that their hands seems to be into
the shoes. 

Therefore, even in the recent technological conditions, the problem of
the double image is not unsolved. Not to say we could better solve it in
future as the computer and the processing technologies are developing. 

Jason Shen
Fiso Stereographs Inc.


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End of PHOTO-3D Digest 3091
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