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 b0bcat
22 May 2018, 19:37
Forum: OCR/Optical Character Recognition
Topic: What is the best free OCR software?
Replies: 7
Views: 431

Re: What is the best free OCR software?

https://forum.diybookscanner.org/viewtopic.php?f=19&t=2759 "DRAFT MUG's GUIDE: Converting old books to PDF" e.g. gImageReader 3.2.3 for MS Windows and Linux (03 Jul 2017) and the discussion of free OCR packages near end of first post ( 09 Jan 2013). If anything new and materially useful is found by ...
by b0bcat
06 Mar 2018, 01:52
Forum: OCR/Optical Character Recognition
Topic: How to edit the text layer of a PDF?
Replies: 3
Views: 892

Re: How to edit the text layer of a PDF?

I may be sending you on a wild goose chase but this may have some leads: https://github.com/manisandro/gImageReader/ I haven't looked at it for some time but I recall a fairly recent version allowed input image pdf to be output with a text layer instead of ocr-only and (maybe) the recognized text co...
by b0bcat
12 Feb 2018, 13:37
Forum: Programs, Software releases, and more.
Topic: Make a djvu file and add ocr: DjVuToy; TiffDjvuOcr; CuneiDjVu
Replies: 12
Views: 4528

Re: Make a djvu file and add ocr: DjVuToy; TiffDjvuOcr; CuneiDjVu

I just added an update to the DRAFT MUG's GUIDE at https://forum.diybookscanner.org/viewtopic.php?f=19&t=2759 and as a lot actually relates to DjVu format it occurred to me to copy the relevant part here which I now do as follows: As will be seen from that thread, using free tools (MS Windows) one c...
by b0bcat
12 Feb 2018, 13:23
Forum: Tutorials/How-To's
Topic: DRAFT MUG's GUIDE: Converting old books to PDF
Replies: 6
Views: 7907

Re: DRAFT MUG's GUIDE: Converting old books to PDF

Well, time passes and 'solvitur ambulando' , one learns by doing... Glancing at this (draft) Guide of mine from back in early 2013 two material factors occur to mind from my experience gained in imaging a couple of decayed old books each year since then: 1) I recant! I recant! "#1. And don't usually...
by b0bcat
03 Jul 2017, 19:58
Forum: Tutorials/How-To's
Topic: DRAFT MUG's GUIDE: Converting old books to PDF
Replies: 6
Views: 7907

Re: DRAFT MUG's GUIDE: Converting old books to PDF

gImageReader 3.2.3 for MS Windows and Linux https://sourceforge.net/projects/gimagereader/?source=directory https://github.com/manisandro/gImageReader/wiki An interesting development in gImageReader 3.2.2 (Jun 30 2017) (current version now at v.3.2.3): " * Attempt to use original source image for P...
by b0bcat
06 Jun 2017, 17:42
Forum: Tutorials/How-To's
Topic: Heavy Speckling
Replies: 3
Views: 916

Re: Heavy Speckling

The specimen tif supplied is b&w 2-colors and although 300dpi, I noticed is either insufficiently defined and/or too over-exposed to capture small typeface print. If possible, the quickest route would seem to be re-scanning in greyscale at a suitable dpi, maybe say, 400, and adjusting the scanner op...
by b0bcat
22 May 2017, 15:52
Forum: Scan Tailor
Topic: What geometric distortions selections to use/choose?
Replies: 5
Views: 1647

Re: What geometric distortions selections to use/choose?

@OP - I haven't read your other posts and don't know how you scanned the image e.g. flatbed or camera, but if it were me, bitter experience would reconfirm the rule: time is most efficiently spent in getting the image quality optimal at the image/acquire stage, and not in trying to achieve too much ...
by b0bcat
29 Jan 2017, 15:05
Forum: Software
Topic: Lizardtech virtual printer
Replies: 3
Views: 1565

Re: Lizardtech virtual printer

Has anyone got a link to the MS Windows version of LizardTech Virtual Printer? I'm wondering if it has been 'disappeared' :?: or has changed name as I'm not finding it ...
by b0bcat
10 Dec 2016, 20:37
Forum: Scanners and Build Threads
Topic: Best non-DIY book scanners
Replies: 44
Views: 30799

Re: Best non-DIY book scanners [Plustek; Avision]

1) dead Plustek OpticBook 4800 - thankfully amazon.co.uk took this back and indeed declined my offer of pro-rata reduction of the fully reimbursed price for having used it for 7 months. The scans produced were fine and it operated faster than the 3600 plus you can get much closer to the spine but fo...
by b0bcat
01 Dec 2016, 21:43
Forum: Scanners and Build Threads
Topic: Best non-DIY book scanners
Replies: 44
Views: 30799

Re: Best non-DIY book scanners

Sounds about right - even for b&w text only I've learned it is indeed best to scan in greyscale and to take care first of all adjusting scanner options like brightness, contrast and gamma, especially with faded/yellowed pages, plus of course using a backing card when scanning thin paper with text bl...