Re: Black generation in cmyk output

[kopszak@mnw.art.pl (Piotr Kopszak)]

On Wed, Dec 01, 2004 at 05:52:09PM +0100, Hans Hagen wrote:
> Henning Hraban Ramm wrote:
> >Am 01.12.2004 um 15:19 schrieb Piotr Kopszak:
> >
> >>Sorry for imprecise question. I meant black generation in rgb images
> >>in JPG format included in document. If it's not possible to control
> >>the amount of black in that case I'd like to use cmyk JPG images, but
> >>will they be left untouched by the colour conversion mechanism?
> >
> >
> >AFAIK ConTeXt doesn't touch pixel images at all - that would be a rather 
> >complicated task, perhaps using little_cms or GIMP libraries or the like...
> 
> indeed, however, you may expect some manipulations without touching the 
> bitmap, like runtime turning gray scales into spot colors and duotones; i 
> have something running here for half a year now but i recently moved the 
> code into the kernel
> 
> Hans

Right, but what exactly happens with included rgb bitmaps 
when I use: 

\setupcolors[state=start,cmyk=yes,rgb=no] 

Will they be left in rgb? 

Piotr



-- 
   Piotr Kopszak, Ph.D.          
   Polish Art Gallery, National Museum in Warsaw    
   ----------------------------->    http://kopszak.mnw.art.pl/
   http://www.magnatune.com/artists/altri_stromenti