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 <[email protected]> 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 <[email protected]> > >> 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 > > > > > > > >
