From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/13988 Path: main.gmane.org!not-for-mail From: Michal Kvasnicka Newsgroups: gmane.comp.tex.context Subject: Dithering (off-topic) Date: Fri, 31 Oct 2003 12:21:48 +0100 Sender: ntg-context-admin@ntg.nl Message-ID: <3FA245CC.30502@econ.muni.cz> Reply-To: ntg-context@ntg.nl NNTP-Posting-Host: deer.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Trace: sea.gmane.org 1067599859 10661 80.91.224.253 (31 Oct 2003 11:30:59 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Fri, 31 Oct 2003 11:30:59 +0000 (UTC) Original-X-From: ntg-context-admin@ntg.nl Fri Oct 31 12:30:57 2003 Return-path: Original-Received: from ref.vet.uu.nl ([131.211.172.13] helo=ref.ntg.nl) by deer.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 1AFXUX-00050R-00 for ; Fri, 31 Oct 2003 12:30:57 +0100 Original-Received: from ref.ntg.nl (localhost.localdomain [127.0.0.1]) by ref.ntg.nl (Postfix) with ESMTP id 9879B10B2C; Fri, 31 Oct 2003 12:30:48 +0100 (MET) Original-Received: from anor.ics.muni.cz (anor.ics.muni.cz [147.251.4.35]) by ref.ntg.nl (Postfix) with ESMTP id A634610B1D for ; Fri, 31 Oct 2003 12:23:21 +0100 (MET) Original-Received: from merkur.econ.muni.cz (merkur.econ.muni.cz [147.251.189.10]) by anor.ics.muni.cz (8.12.1/8.12.1) with ESMTP id h9VBNLQ1014452 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO) for ; Fri, 31 Oct 2003 12:23:21 +0100 Original-Received: from econ.muni.cz (ke-kvasnicka.econ.muni.cz [147.251.224.167]) by merkur.econ.muni.cz (8.12.3/8.11.2/SuSE Linux 8.11.1-0.5) with ESMTP id h9VBNLRl015130 for ; Fri, 31 Oct 2003 12:23:21 +0100 User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.1) Gecko/20020826 X-Accept-Language: en-us, en, cs Original-To: ConTeXt X-Muni-Spam-TestIP: 147.251.189.10 X-Muni-Virus-Test: Clean Errors-To: ntg-context-admin@ntg.nl X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.0.13 Precedence: bulk List-Help: List-Post: List-Subscribe: , List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: Xref: main.gmane.org gmane.comp.tex.context:13988 X-Report-Spam: http://spam.gmane.org/gmane.comp.tex.context:13988 Good evening. I apologize to ask a little off-topic question, but I don't know where to ask (and it is closely related to TeX and PDF). I typeset a church bulleting. It is printed on a laserjet printer (600 dpi), and then copied on a copy machine. As for letters, all is right. But figures (photos) are this way spoiled. I guess it would help either to force PDF to print the figures in some very low resolution (150 dpi), or (probably better) to dither the figures and include them in PNG (instead of ordinary JPEG). Can some of you tell me how to do it? I tried ImageMagick's convert to dither the photos, but outcomes were really poor. Is there some good free software for this (in the best case in Linux)? Or can I do it some way in PDF? Many thanks for any hint. Michal Kvasnicka