From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id A1746138206 for ; Tue, 2 Jan 2018 03:22:24 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 7D06EE0855; Tue, 2 Jan 2018 03:22:17 +0000 (UTC) Received: from mout.gmx.net (mout.gmx.net [212.227.17.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id CD3D1E0809 for ; Tue, 2 Jan 2018 03:22:16 +0000 (UTC) Received: from localhost ([79.223.103.126]) by mail.gmx.com (mrgmx103 [212.227.17.168]) with ESMTPSA (Nemesis) id 0M5csW-1epmEO09mK-00xf05 for ; Tue, 02 Jan 2018 04:22:05 +0100 Date: Tue, 2 Jan 2018 04:22:00 +0100 From: tuxic@posteo.de To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] [OT?]: In search of a program to do different b/w dithering methods Message-ID: <20180102032200.ivytwzfhby374knc@solfire> Mail-Followup-To: gentoo-user@lists.gentoo.org References:<20180101202446.lmlt6cyedcve3vxm@solfire> <20180101213454.GA4479@kern> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To:<20180101213454.GA4479@kern> User-Agent: NeoMutt/20171208 Sender: X-Provags-ID: V03:K0:2+vAEBqihm28YEsZaijaANC4yRrRuxDYwi2L/1CW3X6Wc2CEvKH smXagQdAcq3qKuuFkFdmTDxUrJ0iyIws4hKyb41nAUSZ+ctcWR7wwNzGadXrXzvqSzPMIJZ dwe2UQhl75TNgToX5CQwwEtzyH95jETqvn5yllUjkzaQoDgPrCEAgloT4DteQISiMdQKYob NCUqibJvHhE6FVVOBOr6Q== X-UI-Out-Filterresults: notjunk:1;V01:K0:6uFAyDx0MKM=:fVgigOTt5NU6tFpNtQhZkz AAjVVehvfFpTH4D95JTePNykg7I8XFqZZ1az49rISlStrXIvajaosbo1QPVAsnE8eYYBUMEFI VYjszK2aCK/2PyHIkeaT/PP4c7+r9Lmz2yQCpj0GGzIOw1jKcSdmn8t7CcKsddMcsRnIyWjEy /5Rv+85iM6VB7aOPJpQ4sbeX7VAWQptuLZV3psGwPXs06SU54pqEtfqpVuN7ZH99yMZQtaUpm XWM4fyZHpp6oR70ym1hM0c36HG5+sHwSFu5e3jdVkzkuBBDqIyOp9kwkOGdvuT7Cn+UYGkDAk DQ0bKUtAwOLMsT6uBOAgcnVZRLnCKT5yEO3o97X4oIvo9UZPh23Dj1W4kLVcsUZzYKx365am5 3AhXmPku9VGvxJkuct7t5VRaT2lyHvXDmmT+DZ6k5yuJ3FDwcPhmCJDhorOsBFfmlzwpjbRIi fMa7VUC4G6P6d1Pz2YgowOgz95iq9rk2qckv7oa8L83Veypsad8Y+io3VGpSU0PNATcrhihEV XNXt2lizEcDkh3oKYos4Sben90E0XZxROTVOgXPRCESe/B5ri4zUxtkW2wj5k/HwbgP7JDL9x uTpW0DaFSH63bmWBL7g+Avudbk29+XZ5FFnYIxGECoHsSgcJvHHJNe5DS84fiXHq+PBMSAQ0c ZEjp/gI9EGcptZDz49YNAWohVeL6MqXyvcEp7PhBZothwNCOEA4tIY2Tqb/TfwC5KxLCCwYUN +tLg//1f3oWx1LArVveNIO14tVYHl8TsTkSzSRfJGpgfgk7uvkywXfSJWTxm/AQQLuvCLl/EP 69TJCjY6T2QGF8Ww+02u6vRgRhgrQ== X-Archives-Salt: e171256d-05b9-4288-ace2-b2c3daee408b X-Archives-Hash: 55e7562ad326254d832c73894a51518b On 01/01 10:34, Frank Steinmetzger wrote: > On Mon, Jan 01, 2018 at 09:24:46PM +0100, tuxic@posteo.de wrote: > > Hi, > > […] > > For displaying (the illusion of) different shades of gray, one need > > to convert the colored image into a so called "dithered" black and > > white image (newspapers often use this trick). > > Since -- in difference to the newspapers -- the pixels all have the > > same size and can only be switched on or off only a few dithering > > methods can be applied from which I want to choose the best suited > > for a certain image. > > > > The only problem: Which software can do this kind of conversion? > > The obvious answer Gimp has three methods. Open your photo, select Image → > Mode → Indexed. Select 1 bit colour depth and choose between the dithering > methods at the bottom of the dialog. > > -- > Gruß | Greetings | Qapla’ > Please do not share anything from, with or about me on any social network. > > The bad thing about Wikipedia jokes is > - Deleted due to lack of relevance. - > Hi Frank, thanks for your help! :) Yes, Gimp would be one possibility...but I forgot to mention, that I am looking for a command line tool... I want to do 'mass dithering' and want neither a gui nor a heavy program like The Gimp. I checked pbmplus and found no useful part for that porpuse... Cheers Meino