Date: Thu, 29 Jan 2009 15:11:46 +0200 From: "Reko Turja" <reko.turja@liukuma.net> To: "Gary Kline" <kline@thought.org>, "Andrew Gould" <andrewlylegould@gmail.com> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: OCR... Message-ID: <E90827F901134030B951FC852CEB4B01@rivendell> In-Reply-To: <20090129022349.GB34877@thought.org> References: <20090128040802.GA94236@thought.org><319D789FD18042DBB7A19571DA26E5AE@rivendell><20090128192211.GB22208@thought.org><d356c5630901281132g232f9b60y70c7ed4f750e4428@mail.gmail.com><20090128230916.GA29328@thought.org><d356c5630901281733o52f2c2d4u84f4435ba8a2fcbb@mail.gmail.com> <20090129022349.GB34877@thought.org>
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-------------------------------------------------- From: "Gary Kline" <kline@thought.org> Sent: Thursday, January 29, 2009 4:23 AM To: "Andrew Gould" <andrewlylegould@gmail.com> Cc: "Reko Turja" <reko.turja@liukuma.net>; "FreeBSD Mailing List" <freebsd-questions@freebsd.org> 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 <kline@thought.org> >> 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 <kline@thought.org> >> > > wrote: >> > > > well, damage is probably done. how can i check the >> > > > resolution? >> > > > i tried to increase it by creating huge ppm and tif >> > > > files, but >> > > > then that's really absurd since there can only be just >> > > > so much >> > > > data per image. i _could_ try xv and jpeg and >> > > > smoothing image Yeah, if the image resolution is already at 72DPI, there's sadly no trick in the world that can reliably return the "lost" information. I've read some horrid scans with low resolution in Finereader, and it can grab much of the information nicely. With low resolution be prepared to manually correcting problem spots though. Only reliable way to quesstimate resolution is the font size when at 100% in the screen. If the text is about 10 pixels high, the information has probably been stored in 72DPI for space saving purposes. Wasn't aware of the FreeBSD/Linux backend, but if that works it'd be great - haven't myself visited their website in ages as the version I have does the job I got it for. -Reko
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