From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/17346 Path: main.gmane.org!not-for-mail From: kopszak@mnw.art.pl (Piotr Kopszak) Newsgroups: gmane.comp.tex.context Subject: Re: Black generation in cmyk output Date: Thu, 2 Dec 2004 10:40:07 +0100 Message-ID: <20041202094007.GB1269@mnw.art.pl> References: <20041130150602.GA1420@mnw.art.pl> <41AC903E.9030000@elvenkind.com> <20041201141942.GA1143@mnw.art.pl> <6CD8912C-43B6-11D9-9EBB-0030659899AA@fiee.net> <41ADF6B9.7050700@wxs.nl> Reply-To: mailing list for ConTeXt users NNTP-Posting-Host: deer.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1101980424 1770 80.91.229.6 (2 Dec 2004 09:40:24 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Thu, 2 Dec 2004 09:40:24 +0000 (UTC) Original-X-From: ntg-context-bounces@ntg.nl Thu Dec 02 10:40:19 2004 Return-path: Original-Received: from ronja.vet.uu.nl ([131.211.172.88] helo=ronja.ntg.nl) by deer.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 1CZnRj-00059e-00 for ; Thu, 02 Dec 2004 10:40:19 +0100 Original-Received: from localhost (localhost.localdomain [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id DD59312791; Thu, 2 Dec 2004 10:40:17 +0100 (CET) Original-Received: from ronja.ntg.nl ([127.0.0.1]) by localhost (ronja.vet.uu.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 17306-10; Thu, 2 Dec 2004 10:40:15 +0100 (CET) Original-Received: from ronja.vet.uu.nl (localhost.localdomain [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id 17E1C1277E; Thu, 2 Dec 2004 10:40:15 +0100 (CET) Original-Received: from localhost (localhost.localdomain [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id 7FD641277E for ; Thu, 2 Dec 2004 10:40:12 +0100 (CET) Original-Received: from ronja.ntg.nl ([127.0.0.1]) by localhost (ronja.vet.uu.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 17371-04 for ; Thu, 2 Dec 2004 10:40:09 +0100 (CET) Original-Received: from mnw5.mnw.art.pl (unknown [195.117.227.1]) by ronja.ntg.nl (Postfix) with ESMTP id D3A671276C for ; Thu, 2 Dec 2004 10:40:08 +0100 (CET) Original-Received: from axent.mnw.art.pl ([195.117.227.124]) by mnw5.mnw.art.pl (Kerio MailServer 6.0.3) for ntg-context@ntg.nl; Thu, 2 Dec 2004 10:52:36 +0100 Original-Received: by axent.mnw.art.pl (Postfix, from userid 1001) id B560747EE8E; Thu, 2 Dec 2004 10:40:07 +0100 (CET) Original-To: mailing list for ConTeXt users Mail-Followup-To: mailing list for ConTeXt users Content-Disposition: inline In-Reply-To: <41ADF6B9.7050700@wxs.nl> User-Agent: Mutt/1.5.5.1+cvs20040105i X-Virus-Scanned: by amavisd-new at ntg.nl X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.1.5 Precedence: list List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: ntg-context-bounces@ntg.nl Errors-To: ntg-context-bounces@ntg.nl X-Virus-Scanned: by amavisd-new at ntg.nl Xref: main.gmane.org gmane.comp.tex.context:17346 X-Report-Spam: http://spam.gmane.org/gmane.comp.tex.context:17346 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