From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/15855 Path: main.gmane.org!not-for-mail From: =?ISO-8859-15?Q?Peter_M=FCnster?= Newsgroups: gmane.comp.tex.context Subject: Re: Downsampling images in pdfTeX Date: Wed, 28 Jul 2004 17:54:00 +0200 (CEST) Sender: ntg-context-bounces@ntg.nl Message-ID: References: <001101c473ee$6e1cac00$fcb359d5@DJCPX90J> Reply-To: ntg-context@ntg.nl NNTP-Posting-Host: deer.gmane.org Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Trace: sea.gmane.org 1091031032 30985 80.91.224.253 (28 Jul 2004 16:10:32 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 28 Jul 2004 16:10:32 +0000 (UTC) Original-X-From: ntg-context-bounces@ntg.nl Wed Jul 28 18:10:17 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 1Bpr0T-0000q9-00 for ; Wed, 28 Jul 2004 18:10:17 +0200 Original-Received: from localhost (localhost.localdomain [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id B7A0012789; Wed, 28 Jul 2004 18:10:16 +0200 (CEST) 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 18528-06; Wed, 28 Jul 2004 18:10:13 +0200 (CEST) Original-Received: from ronja.vet.uu.nl (localhost.localdomain [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id 9E6401277A; Wed, 28 Jul 2004 18:10:13 +0200 (CEST) Original-Received: from localhost (localhost.localdomain [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id B46D81277A for ; Wed, 28 Jul 2004 18:10:12 +0200 (CEST) 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 18582-05 for ; Wed, 28 Jul 2004 18:10:12 +0200 (CEST) Original-Received: from postfix4-2.free.fr (unknown [213.228.0.176]) by ronja.ntg.nl (Postfix) with ESMTP id 3E98712771 for ; Wed, 28 Jul 2004 18:10:12 +0200 (CEST) Original-Received: from gaston.free.fr (rennes-1-62-147-99-53.dial.proxad.net [62.147.99.53]) by postfix4-2.free.fr (Postfix) with ESMTP id 430081B2ED1 for ; Wed, 28 Jul 2004 18:10:09 +0200 (CEST) Original-Received: by gaston.free.fr (Postfix, from userid 500) id DC28E13C06F; Wed, 28 Jul 2004 17:54:00 +0200 (CEST) Original-Received: from localhost (localhost [127.0.0.1]) by gaston.free.fr (Postfix) with ESMTP id A7CBE148014 for ; Wed, 28 Jul 2004 17:54:00 +0200 (CEST) X-X-Sender: peter@gaston.free.fr Original-To: mailing list for ConTeXt users In-Reply-To: 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: , Errors-To: ntg-context-bounces@ntg.nl X-Virus-Scanned: by amavisd-new at ntg.nl Xref: main.gmane.org gmane.comp.tex.context:15855 X-Report-Spam: http://spam.gmane.org/gmane.comp.tex.context:15855 On Tue, 27 Jul 2004, George N. White III wrote: > For images that will be displayed only at low resolution it may be useful > to downsample the original image to reduce the size. For example you > might have a 2 inch by 2 inch image scanned at 400 dpi. This image would > have 800x800 pixels. For screen display you might prefer to have a > 200x200 pixel image (or 100 dpi for 2 inches). Downsampling refers > to the process of reducing an 800x800 pixel image to 200x200 pixels. > ways to reduce image size (lossy compression, colorspace changes, > even converting certain images to line art). Quite soon, I'm going to convert the degrade LaTeX-package (CTAN: graphics/degrade) to ConTeXt. It permits to down-sample JPEG images on the fly to a given resolution. Cheers, Peter -- http://pmrb.free.fr/contact/ _____________________________________ FilmSearch engine: http://f-s.sf.net/