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List:       imagemagick-user
Subject:    Re: [magick-users] Convert CMYK jpeg (cliping path) to CMYK
From:       Leonard Rosenthol <leonardr () lazerware ! com>
Date:       2002-09-28 22:14:03
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At 4:04 PM +0200 9/27/02, Gerry wrote:
>I was wondering how to get this done?
>
>I have a high-res jpg image (cmyk) with a cliping path.
>How can i use the cliping path to make a transparent pdf (CMYK) to be placed
>by pdflib.

	You can't with any existing tool that I am aware of at this 
time.   Transparency in PDF is a new feature in PDF 1.4 and very few 
tools support it at this time.   Add to that support for clipping 
paths in JPEG...

	That said, you COULD do the following to get CLOSE to your 
desired result...

	Use ImageMagick to convert from the JPEG to TIFF, which also 
supports CMYK and be sure to use the -clip command to get ImageMagick 
to convert from teh clipping path in the JPEG to a transparency mask 
in the TIFF.    Then you can place the TIFF using PDFlib which knows 
how to deal with TIFF masking.

	That being said, I am working on adding PDF 1.4 transparency 
generation directly to ImageMagick - but it's not there today...


Leonard
-- 
---------------------------------------------------------------------------
Leonard Rosenthol                            <mailto:leonardr@lazerware.com>
                      			     <http://www.lazerware.com>
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