Ever since my office got a copy of the 3D Sports Illustrated Swimsuit
issue, I've been playing around with doing red/blue anaglyph images in
POV-Ray.

It seems to work fairly well if I render two images (one for each eye)
and combine the red channel of the left eye's image with the green and
blue channels of the right eye's image -- is this the proper way to go
about doing it (assuming the glasses have a red left lens and a blue
right lens)?

Anyway, here's a test anaglyph render I ran last night.  There's a
little bit of ghosting, especially through the red lens; does anyone
know how to get rid of it, or is it simply a byproduct of full-colour 3D
images (since the green channel isn't completely filtered out by the red
lens)?


-- 
Jeff Lee         shi### [at] gatenet        http://www.gate.net/~shipbrk/

  "The only thing that helps me maintain my slender grip on reality
  is the friendship I share with my collection of singing potatoes."

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Jeff Lee wrote in message <395ac0a0.6815753@news.povray.org>...
>Ever since my office got a copy of the 3D Sports Illustrated Swimsuit
>issue...

You Know You've Been POVing Too Long When.....

<grin>
Mark

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A vertigo-like image I thought before using the red/blue glasses, then it
looked alright.  Seemed the cursor was able to pass through the gate.  I'm not
much of a fan of the "anaglyph" variety of 3D images.  Too much is lost in the
textures.
It may not be a problem with green separation or any such thing.  I noticed
that the white parts of the image simply compete to be seen as either red or
blue while you look at it.  At least that's my observation of it.

Bob

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not bad, its just a shame that so much is lost just to give the image a 3d
look, maybe you should try the cross eye style next time!

Rick

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I thought it was pretty good. My 7 year old son said the top of the gate
jumped out at him.

Alan

"Jeff Lee" <shi### [at] gatenet> wrote in message
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"Rick" <ric### [at] kitty5com> wrote:
>
> not bad, its just a shame that so much is lost just to give the image a 3d
> look,

How do you mean "lost"?


> maybe you should try the cross eye style next time!

I've tried that, but of course you're limited to half your monitor width
for each side.


-- 
Jeff Lee         shi### [at] gatenet         http://www.gate.net/~shipbrk/

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"Jeff Lee" wrote:
> It seems to work fairly well if I render two images (one for
> each eye) and combine the red channel of the left eye's image
> with the green and blue channels of the right eye's image --
> is this the proper way to go about doing it (assuming the
> glasses have a red left lens and a blue right lens)?

As far as I know you need to convert both images to grayscale, and *then*
combine the red channel of the left eye's image with the green and blue
channels of the right eye's image.

Yes, you loose all color information in the image, but that's just the way
anaglyph are...

I'm not entirely sure of what I say here, so if anybody knows better, please
tell me.

> Anyway, here's a test anaglyph render I ran last night.
> There's a little bit of ghosting, especially through the red
> lens; does anyone know how to get rid of it, or is it simply
> a byproduct of full-colour 3D images (since the green channel
> isn't completely filtered out by the red lens)?

Probably because the image colors and the colors of the glasses doesn't
match 100%.
I don't know what to do about it, but maybe my above suggestion might help a
little.

Greetings,

Rune
--
Updated June 12: http://rsj.mobilixnet.dk
3D images, include files, stereograms, tutorials,
The POV Desktop Theme, The POV-Ray Logo Contest,
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Very nice. At first I thought the stereo base was too small but it works.
The only other pointer would be to move the scene back into the stereo
window a little because the bulkhead on the right is cut off by the edge
of the image.

On the ghosting, I'm not getting much. Sometime it depends on your
3D glasses and your monitor. The glasses that came with Sports
Illustrated might be optimal for viewing printed anaglyphs. I have a
pair with darker lenses.

I think you did the color separations just right, many people have a
strong opinion that all anaglyphs should be gray scale, but often a
"color" anaglyph works.

Harold
"Jeff Lee" <shi### [at] gatenet> wrote in message
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Great again! There are several things I don't get:
1) What do you do essentially to make an anaglyph and
2) what type of lighting - lightsources - did you use? I have been
struggling for some time with that in particular, and I don't seem to be
able to get a natural looking type of light...

--
Regards,  Sander
-----------------------------

Jeff Lee <shi### [at] gatenet> schreef in berichtnieuws
395### [at] mailhostgatenet...

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