[sane-devel] CZUR type scanners with SANE?

[Yuri Chornoivan]

середа, 1 вересня 2021 р. 19:00:34 EEST Graham Seaman написано:
> Thanks Kelly/Klaus
> 
> The problem with big books is holding the pages flat while scanning,
> where the pages curve inward at the centre. Press down too hard and you
> break the spine, don't press down and the beginning/end of lines isn't
> captured. The Internet Archive has custom-built machines to help with
> this. I don't have the time/money to build/buy a solution like the
> Internet Archive one (you can find designs for them online easily enough
> - their solution is mainly a mechanical one).
> 
> An alternative is these CZUR scanners which use lasers to grab an image
> from multiple angles - including the inner curve at the centre of the
> book - and software to remove the distorting effects of the curvature,
> without needing to force the book flat.  At least that's what their
> advertising says.
> 
> Klaus Kämpf says the CZUR scanners show as webcams under Linux,
> unfortunately I guess that means I have to sort out the curvature
> correction stuff myself if I buy one. There isn't anyone working on
> Linux CZUR support on github I can see. I guess I'll carry on looking
> for an equivalent that the manufacturers do Linux support for, and if
> that fails buy a cheap Windows laptop.
> 
> Graham

Hi,

You may find useful ScanTailor Advanced [1] for post-processing scanned images. This software can be used to fix the above-mentioned kind of image distortion.

Hope this helps.

Best regards,
Yuri

[1] https://github.com/4lex4/scantailor-advanced
 
> On 01/09/2021 16:00, Kelly Price wrote:
> > Jason (@textfiles) got back to me off Twitter and says:
> > 
> >      Various DSLR cameras and Linux, with a huge set of modified
> > scanning software pulled from open sources abd also developed
> > internally.
> > 
> > This also means you could do this with the Raspberry Pi's High Quality
> > camera... and use V2L tools to take the scan:
> > https://youtu.be/8fcbP7lEdzY for how.
> > 
> > On Wed, Sep 1, 2021 at 10:51 AM Kelly Price <strredwolf at gmail.com> wrote:
> >>
> >> This sounds kinda like Internet Archive work.  Let me ask Jason Scott
> >> for where to ask about what they use for scanning books.
> >>
> >> On Wed, Sep 1, 2021 at 10:30 AM Graham Seaman <graham at theseamans.net> wrote:
> >>>
> >>> I've been using a Canon flatbed scanner with SANE, but now need to scan
> >>> quite thick books I can't manage on that without destroying the books.
> >>> So I'm looking at getting a CZUR scanner - overhead laser based, eg.
> >>> https://www.amazon.co.uk/dp/B07TJTVVB6/ - which should work better for
> >>> this use case. But it looks like they are not supported by SANE. Is
> >>> there any chance there may be in the near future, or are there similar
> >>> scanners that SANE already supports?
> >>>
> >>> I don't have a Mac or Windows laptop, only Linux, so SANE support is
> >>> important for me.
> >>>
> >>> Thanks
> >>>
> >>> Graham
> >>>
> >>
> >>
> >> --
> >> Kelly "STrRedWolf" Price
> >> http://redwolf.ws
> > 
> > 
> > 
> 
>