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Re: How to publish CMYK EPS on the web?

On Wed, Jan 19, 2005 at 08:45:33PM +0100, Joerg Rossdeutscher wrote:
> Hi,
> Am Mittwoch, den 19.01.2005, 16:21 +0100 schrieb Piotr Kopszak:
> > I would be interested in any  of your ideas concerning the question in
> > the  subject or  simply(?)   in receiving  a  command line  parameters
> > necessary  to obtain RGB  jpeg from  CMYK EPS  Photoshop 8.0  files in
> > appropriate colours.  I'm using GNU  Ghostscript 7.07 that  comes with
> > Debian.
> 1. Install ImageMagick.
> 2. "convert my.eps my.jpg"

This wont give you the right colours. You need something that
understands colour management.

You will need Little CMS (excellent colour management library) and some
colour profiles. Google for adobe icc profiles to get some standard ones
from adobe.

Although, you with some stuffing around, you might be able to use
gs7.07, I *highly* recommend you use gs8.50, unfortunately not available
yet as a deb, so you will need to grab source.

gs8.50 has a tiff32nc device that will give you a CMYK tiff from your
eps, e.g:

        gs -sDEVICE=tiff32nc -sOutputFile=cmyk_image.tif cmyk.eps

Add other options to gs as you need.

Now you need to create an RGB image of your tiff, using tifficc:

        tifficc -i /path/to/cmyk_profile \
                -o /path/to/rgb_profile \
                cmyk_image.tif rgb_image.tif

now convert your rgb tif to a jpg, using whatever app you like.



David Purton
For the eyes of the LORD range throughout the earth to
strengthen those whose hearts are fully committed to him.
                                 2 Chronicles 16:9a

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