From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/17342 Path: main.gmane.org!not-for-mail From: Hans Hagen Newsgroups: gmane.comp.tex.context Subject: Re: Black generation in cmyk output Date: Wed, 01 Dec 2004 17:52:09 +0100 Message-ID: <41ADF6B9.7050700@wxs.nl> References: <20041130150602.GA1420@mnw.art.pl> <41AC903E.9030000@elvenkind.com> <20041201141942.GA1143@mnw.art.pl> <6CD8912C-43B6-11D9-9EBB-0030659899AA@fiee.net> Reply-To: mailing list for ConTeXt users NNTP-Posting-Host: deer.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: sea.gmane.org 1101921283 25745 80.91.229.6 (1 Dec 2004 17:14:43 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 1 Dec 2004 17:14:43 +0000 (UTC) Original-X-From: ntg-context-bounces@ntg.nl Wed Dec 01 18:14:34 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 1CZXiF-00040c-00 for ; Wed, 01 Dec 2004 17:52:19 +0100 Original-Received: from localhost (localhost.localdomain [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id B67F0127BE; Wed, 1 Dec 2004 17:52:18 +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 11517-02; Wed, 1 Dec 2004 17:52:14 +0100 (CET) Original-Received: from ronja.vet.uu.nl (localhost.localdomain [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id B336E127AE; Wed, 1 Dec 2004 17:52:13 +0100 (CET) Original-Received: from localhost (localhost.localdomain [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id 3D23F127AE for ; Wed, 1 Dec 2004 17:52:12 +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 11480-04-2 for ; Wed, 1 Dec 2004 17:52:11 +0100 (CET) Original-Received: from mailrelay01.solcon.nl (unknown [212.45.32.200]) by ronja.ntg.nl (Postfix) with ESMTP id 89D2D12777 for ; Wed, 1 Dec 2004 17:52:11 +0100 (CET) Original-Received: from server-1.pragma-net.nl (dsl-212-84-128-085.solcon.nl [212.84.128.85]) by mailrelay01.solcon.nl (8.12.11/SQL-8.12.11-5/8.12.11) with ESMTP id iB1Gq7WU026311 for ; Wed, 1 Dec 2004 17:52:07 +0100 Original-Received: by server-1.pragma-net.nl (Postfix, from userid 65534) id DC6F817C62; Wed, 1 Dec 2004 17:52:10 +0100 (CET) Original-Received: from [10.100.1.191] (unknown [10.100.1.191]) by server-1.pragma-net.nl (Postfix) with ESMTP id AC30017AF1 for ; Wed, 1 Dec 2004 16:52:09 +0000 (UTC) User-Agent: Mozilla Thunderbird 0.8 (Windows/20040913) X-Accept-Language: en-us, en Original-To: mailing list for ConTeXt users In-Reply-To: <6CD8912C-43B6-11D9-9EBB-0030659899AA@fiee.net> X-Virus-Scanned: ClamAV 0.80/540/Tue Oct 19 14:59:23 2004 clamav-milter version 0.80j on mailrelay01 X-Virus-Status: Clean 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:17342 X-Report-Spam: http://spam.gmane.org/gmane.comp.tex.context:17342 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 ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------