[rescue] Vax source code
drb at msu.edu
Fri Oct 11 10:04:51 CDT 2013
> I have a flatbed scanner that can do 8.5"x14" at 300dpi (actually, the
> max is 300 dpi one way and 600 dpi the other); if that's good enough to
> be useful, I can scan the 'fiche if someone can get it to me. (I don't
> recall exactly how large print is on the 'fiche, but I do recall being
> able to read it without magnification, albeit at a bit of a strain.)
> I'm not afraid of a little tedium, and since I'd probably be doing
> between four and eight sheets per scan, that's all it would be. At
> worst it'd mean multiple scanning sessions.
Far too little resolution. Whole characters are going to be on the
order of 0.1 mm wide. You'd need, what, 5-10 pixels per character width
to make them readable? 300 dpi will give you _1_ pixel per character.
Googling, I see some folks claiming to get usable results with hacked up
setups at 2400 to 4800 dpi. At least some of them report having to mask
off individual images on a fiche to get usable scans, though I suspect
that manually setting the scan density might solve that problem.
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