Daniel Reetz, the founder of the DIY Book Scanner community, has recently started making videos of prototyping and shop tips. If you are tinkering with a book scanner (or any other project) in your home shop, these tips will come in handy. https://www.youtube.com/channel/UCn0gq8 ... g_8K1nfInQ

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by dpc
12 Feb 2021, 14:39
Forum: R&D and New Technologies
Topic: New scanner by Archive.org?
Replies: 3
Views: 555

Re: New scanner by Archive.org?

I wonder why Archive.org doesn't want to show TTScribe which is their main scanner now. We can only guess. It may be the scanner that the seasoned page-flipper was more familiar with. That scanner also is more "open" than the TTScribe and makes photographing a person using it somewhat easier. What ...
by dpc
10 Feb 2021, 21:32
Forum: R&D and New Technologies
Topic: New scanner by Archive.org?
Replies: 3
Views: 555

Re: New scanner by Archive.org?

The scanner used in that video is what the Internet Archive used before they switched to TTScribe. If you look at the page on wikipedia on Book Scanning, there are photos of that scanner there dated from 2011.
by dpc
09 Feb 2021, 12:32
Forum: Lighting
Topic: Recommendation regarding brightness
Replies: 5
Views: 592

Re: Recommendation regarding brightness

you can compensate to some extent this problem by photographing a flat white sheet.. Yep. That's the technique I use to mitigate that problem. The first photo taken by each camera are of blank reference pages. The post-processing software that I developed does this correction automatically in the b...
by dpc
05 Feb 2021, 13:59
Forum: Lighting
Topic: Recommendation regarding brightness
Replies: 5
Views: 592

Re: Recommendation regarding brightness

Probably not that critical if you're going to scanning black text on a white page and then post-processing with something like ScanTailor that binarizes the output. If you're looking for something more accurate than that you could always use an 18% gray card to set things up. I remember reading thro...
by dpc
22 Jan 2021, 17:03
Forum: Scan Tailor
Topic: Combining Split output into PDF
Replies: 9
Views: 686

Re: Combining Split output into PDF

@jeffamuffin

If you don't mind, will you post the file size savings of your work so that we can get a rough idea of what one could expect by going this route? Thanks!
by dpc
10 Jan 2021, 15:58
Forum: HELP
Topic: How to number lines in scanned text?
Replies: 2
Views: 999

Re: How to number lines in scanned text?

Well there's this bit of chicanery: https://tex.stackexchange.com/questions ... -to-a-pdf/

You might also want to ping the folks in the PDF forum of mobileread.com (https://www.mobileread.com/forums/forum ... .php?f=184).
by dpc
07 Jan 2021, 02:47
Forum: Lighting
Topic: Glass plate for Copy Stand
Replies: 3
Views: 925

Re: Glass plate for Copy Stand

Thank you. I saw the Kaiser product. But that is more suitable for a book. Right. That is for books and is overkill for your needs, but read through the rest of the thread where I posted a link to the type of hinges it uses. In your case, you'll need two of those hinges mounted to the glass that wi...
by dpc
04 Jan 2021, 21:36
Forum: Lighting
Topic: Glass plate for Copy Stand
Replies: 3
Views: 925

Re: Glass plate for Copy Stand

You may want to start by looking at this thread: viewtopic.php?f=14&t=3590
by dpc
22 Dec 2020, 11:25
Forum: "Destructive" Scanning
Topic: Creating a Digital Library
Replies: 21
Views: 10167

Re: Creating a Digital Library

... I am primarily using PDF as it is imo more of a "common denominator" than ePub. However, i have had difficulties in adapting PDF scanned material to my eReader. ... What sort of difficulties are you having? I work exclusively with PDFs in digitizing books. I tried ePub a decade ago when I began...
by dpc
15 Dec 2020, 20:56
Forum: HELP
Topic: tiff alpha/transparency channel - utility to scan files for its presence?
Replies: 5
Views: 769

Re: tiff alpha/transparency channel - utility to scan files for its presence?

What might work is just batch all of the TIFF files through an image converter to an image format that doesn't contain an alpha channel, then convert them back from that intermediate format to TIFF. I don't have any recommendations for a command line image converter (I just use Photoshop for everyth...