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From: Pieter Praet <pieter@praet.org>
To: TP <wingusr@gmail.com>, Org Mode <emacs-orgmode@gnu.org>
Subject: Re: [OT] Scanning for archiving
Date: Wed, 09 Nov 2011 09:51:10 +0100	[thread overview]
Message-ID: <87y5vpvfup.fsf@praet.org> (raw)
In-Reply-To: <CAMEax74dSrK-yV_XKsu+zFACcZDajPp6gOLpA2MObO0VRFfo_Q@mail.gmail.com>

On Sun, 6 Nov 2011 22:14:54 -0800, TP <wingusr@gmail.com> wrote:
> On Sun, Nov 6, 2011 at 1:59 PM, Pieter Praet <pieter@praet.org> wrote:
> > On Sat, 5 Nov 2011 16:35:11 -0700, Samuel Wales <samologist@gmail.com> wrote:
> >> I used to find that 8-bit 75dpi was legible and small.
> >>
> >
> > True.
> >
> > It all depends on why you're scanning them in the first place.
> >
> > 75dpi is fine when scanning with collaboration/quick-reference in mind,
> > but for archival/backup purposes (i.e. absolute peace of mind when your
> > whole collection of dead trees burns, drowns, or is simply disposed of)
> > or OCR, you'll want to go with 600dpi and beyond.
> 
> One common technique is to always scan 300dpi grayscale (or color) and
> use clever software to upsample to 600dpi b&w (of course somehow
> segmenting scans into "picture" and "text" regions first.
> 

Upsampling defies the first law of thermodynamics?

But seriously, after reading up a bit, I'm convinced :)

Quite a manual process though...  Could you recommend any (FOSS)
software that does this automatically?

> >> What ADF scanners are out there for Linux that have high quality
> >> reliable ADF, [...]
> >
> > I wish I knew...  If anyone on this list can think of a scanner whose
> > ADF doesn't require constant babysitting, I'm betting it won't have a
> > consumer-grade price tag.
> 
> I've heard nice things about the Fujitsu ScanSnap S1500
> (http://www.fujitsu.com/global/services/computing/peripheral/scanners/product/s1500/)
> and S1500M (http://www.fujitsu.com/global/services/computing/peripheral/scanners/product/s1500m/).
> About $450 or so from amazon. The S1300 is about half the price but
> also slower.
> 
> Apparently the S1500's are supported on Linux via Sane
> (http://www.sane-project.org/sane-backends.html#S-FUJITSU). Don't see
> any mention of the S1300 (but it probably also works?).
> 


Peace

-- 
Pieter

  reply	other threads:[~2011-11-09  8:52 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-05 20:03 [OT] Scanning for archiving Marcelo de Moraes Serpa
2011-11-05 20:34 ` Achim Gratz
2011-11-05 20:52   ` Marcelo de Moraes Serpa
2011-11-05 21:01 ` Jan Böcker
2011-11-05 21:06   ` Marcelo de Moraes Serpa
2011-11-05 22:36 ` Pieter Praet
2011-11-05 23:35   ` Samuel Wales
2011-11-06 21:59     ` Pieter Praet
2011-11-07  6:14       ` TP
2011-11-09  8:51         ` Pieter Praet [this message]
2011-11-20 13:57         ` Matt Lundin
2011-11-07 17:44   ` Karl Voit
2011-11-09  7:40     ` Pieter Praet
2011-11-09  9:06       ` Johnny
2011-11-09 11:05       ` Karl Voit
2011-11-09 14:53     ` Karl Voit

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