From owner-freebsd-questions@FreeBSD.ORG Thu Jan 29 13:11:26 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 317A4106564A for ; Thu, 29 Jan 2009 13:11:26 +0000 (UTC) (envelope-from reko.turja@liukuma.net) Received: from www.liukuma.net (www.liukuma.net [62.220.235.15]) by mx1.freebsd.org (Postfix) with ESMTP id DABC38FC1B for ; Thu, 29 Jan 2009 13:11:25 +0000 (UTC) (envelope-from reko.turja@liukuma.net) Received: from localhost (unknown [127.0.0.1]) by www.liukuma.net (Postfix) with ESMTP id 80C701CC95; Thu, 29 Jan 2009 15:11:12 +0200 (EET) Received: from www.liukuma.net ([127.0.0.1]) by localhost (www.liukuma.net [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id bzuQ0rtyN1Tf; Thu, 29 Jan 2009 15:11:10 +0200 (EET) Received: from rivendell (a88-114-134-146.elisa-laajakaista.fi [88.114.134.146]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (No client certificate requested) (Authenticated sender: ignatz@www.liukuma.net) by www.liukuma.net (Postfix) with ESMTP id 192741CC67; Thu, 29 Jan 2009 15:11:08 +0200 (EET) Message-ID: From: "Reko Turja" To: "Gary Kline" , "Andrew Gould" References: <20090128040802.GA94236@thought.org><319D789FD18042DBB7A19571DA26E5AE@rivendell><20090128192211.GB22208@thought.org><20090128230916.GA29328@thought.org> <20090129022349.GB34877@thought.org> In-Reply-To: <20090129022349.GB34877@thought.org> Date: Thu, 29 Jan 2009 15:11:46 +0200 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: quoted-printable X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8050.1202 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8050.1202 Cc: FreeBSD Mailing List Subject: Re: OCR... X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Jan 2009 13:11:26 -0000 -------------------------------------------------- From: "Gary Kline" Sent: Thursday, January 29, 2009 4:23 AM To: "Andrew Gould" Cc: "Reko Turja" ; "FreeBSD Mailing List"=20 Subject: Re: OCR... > On Wed, Jan 28, 2009 at 07:33:41PM -0600, Andrew Gould wrote: >> On Wed, Jan 28, 2009 at 5:09 PM, Gary Kline =20 >> wrote: >> >> > On Wed, Jan 28, 2009 at 01:32:57PM -0600, Andrew Gould wrote: >> > > On Wed, Jan 28, 2009 at 1:22 PM, Gary Kline =20 >> > > wrote: >> > > > well, damage is probably done. how can i check the=20 >> > > > resolution? >> > > > i tried to increase it by creating huge ppm and tif=20 >> > > > files, but >> > > > then that's really absurd since there can only be just=20 >> > > > so much >> > > > data per image. i _could_ try xv and jpeg and=20 >> > > > smoothing image Yeah, if the image resolution is already at 72DPI, there's sadly no=20 trick in the world that can reliably return the "lost" information.=20 I've read some horrid scans with low resolution in Finereader, and it=20 can grab much of the information nicely. With low resolution be=20 prepared to manually correcting problem spots though. Only reliable=20 way to quesstimate resolution is the font size when at 100% in the=20 screen. If the text is about 10 pixels high, the information has=20 probably been stored in 72DPI for space saving purposes. Wasn't aware of the FreeBSD/Linux backend, but if that works it'd be=20 great - haven't myself visited their website in ages as the version I=20 have does the job I got it for. -Reko=20