Processing two-colour printed manuals - was Re: Too many DEC binders

Toby Thain toby at
Sat Aug 24 18:32:44 CDT 2019

On 2019-08-24 5:09 p.m., Al Kossow wrote:
> On 8/24/19 10:45 AM, Toby Thain wrote:
>> By the way, what's your position on scanning two-colour printed manuals
>> like the DTR ones? Not worth keeping the colour for Bitsavers?
> I'd like to do it for all the multi-color text manuals, but I never came up with a way
> to map to single shades per color from a png

Have you looked at Matt Zucker's noteshrink? Not exactly what you're
asking, but still possibly useful for duotone work:

I did some brainstorming with Aaron (OP) recently and I think it would
be possible to do a good isolation of the second colour, automatically.
Might hack something up because the DATATRIEVE stuff is all printed in 2
inks. (Assuming noteshrink isn't good enough.)


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