Is there any possibility to set PovRay to output directly to an 32-bit CMKY
file rather than the usual 24-bit RGB format.

Thanks
Sergio

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Sergio wrote:
> 
> Is there any possibility to set PovRay to output directly to an 32-bit CMKY
> file rather than the usual 24-bit RGB format.
> 
> Thanks
> Sergio

No.

-- 
Ken Tyler -  1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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Can someone add this? I know I could use it (for my yearbook).

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I don't think this would be practical, since AFAIK internally POV is built
around the RGB model. You could of course do RGB -> CMYK conversion in video
post, but there are other programs better suited for this. Good RGB -> CMYK
conversion is not a trivial matter, for one because the two models have quite
different gamut space.

Margus

TonyB wrote:
> 
> Can someone add this? I know I could use it (for my yearbook).

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On Sun, 21 Nov 1999 16:22:37 -0000, "Sergio" <ine### [at] esotericapt>
wrote:

>
>Is there any possibility to set PovRay to output directly to an 32-bit CMKY
>file rather than the usual 24-bit RGB format.
>
>Thanks
>Sergio

RGB to CMYK conversion is lossy and it requires a profile, and these
are platform-specific. So the answer is no, and it probably remain so
in the next version.


Peter Popov
ICQ: 15002700

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Margus Ramst wrote:
> 
> I don't think this would be practical, since AFAIK internally POV is built
> around the RGB model. You could of course do RGB -> CMYK conversion in video
> post, but there are other programs better suited for this. Good RGB -> CMYK
> conversion is not a trivial matter, for one because the two models have quite
> different gamut space.
> 
> Margus

  I see a lot of people asking the question in comp.graphics.misc about
convering RGB -> CMYK. Even the people experienced with the process and
can afford the software that does this type of conversion are not always
happy with the results.

  I would think it would be highly problematic to do this in POV-Ray and
get predictable results.


-- 
Ken Tyler -  1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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Ken wrote:
> 
>   I would think it would be highly problematic to do this in POV-Ray and
> get predictable results.
> 

Is there an echo in here? :)
Or did my post sound like I was claiming the opposite?

Margus

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Margus Ramst wrote:

> Is there an echo in here? :)
> Or did my post sound like I was claiming the opposite?
> 
> Margus

No sir. I was merely supporting your statement. You see it's like if
one person say's to you that there is a red mark on your face you
might ignore that person. If every person you see for the rest of the
day tells you that there is a red mark on your face it's time that
you start believing them. For that reason I thought that I would
attempt to lend some weight to what you already said so that the
topic would not continue in a pointless manner.

Satisfied ?

-- 
Ken Tyler -  1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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Ken wrote:
> 
> Satisfied ?
> 

Of course.
I was simply afraid my argument had fallen victim to poor wording.

Margus

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Sergio <ine### [at] esotericapt> wrote ...
>
> Is there any possibility to set PovRay to output directly to an 32-bit
CMKY
> file rather than the usual 24-bit RGB format.
>
> Thanks
> Sergio
>
No, but you could output to a PNG and use up to 16 bits per color (48 bits
total).  This could give better output for subsequent CMYK conversion

-Nathan

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