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 zbgns
26 Jun 2018, 17:45
Forum: Scan Tailor
Topic: Scan Tailor Advanced
Replies: 103
Views: 60644

Re: Scan Tailor Advanced

While on the topic of pdf to images: In my experience some pdf files unpack to images with negative black and white colors. To fix that run GraphicsMagick's convert command on the images with the command parameter -negate . I guess this happens in case of MRC compressed pdf files. https://en.wikipe...
by zbgns
26 Jun 2018, 07:01
Forum: HELP
Topic: Converting PDF to ePub Calibre not working
Replies: 11
Views: 6297

Re: Converting PDF to ePub Calibre not working

And don't forget to convert most line breaks into spaces, so that you have free flowing text for the Epub. It is better to use another OCR which does not keep the line breaks as Acrobat does, if the ultimate goal is an EPUB. Newer versions of Acrobat Pro join lines into paragraphs and in general tr...
by zbgns
26 Jun 2018, 03:22
Forum: HELP
Topic: Converting PDF to ePub Calibre not working
Replies: 11
Views: 6297

Re: Converting PDF to ePub Calibre not working

You may use Acrobat Pro to export the pdf to MS Word file (Save -> Export to -> Microsoft Word). Edit the output .docx (OCR errors corrections may be necessary it is also useful to use styles to indicate headings, chapters and so on). Afterwards this may be easely exported to epub format. BTW, Calli...
by zbgns
18 Jun 2018, 04:21
Forum: Scan Tailor
Topic: Scan Tailor Advanced
Replies: 103
Views: 60644

Re: Scan Tailor Advanced

But there's one functionality I'd advise to exclude: moving the dewarping from the final to the third stage. At least there should be an ability to keep it in stage 3. The reason for this, is that the dewarping is often crashing, with many of my scanned books. When this happens in the 3rd stage, it...
by zbgns
10 Apr 2018, 05:37
Forum: HELP
Topic: New and not sure where I am going wrong
Replies: 5
Views: 5747

Re: New and not sure where I am going wrong

I experimented with some implementations of the cardboard scanner concept and it seems that there are a few common issues that you apparently also encountered. It would be relatively easy to apply some improvements that may help in reduction of manual work during processing with Scan Tailor. Scan Ta...
by zbgns
08 Feb 2018, 04:07
Forum: Scan Tailor
Topic: Scan Tailor Advanced
Replies: 103
Views: 60644

Re: Scan Tailor Advanced

Thanks 4lex4, I really appreciate the new release. Your instructions on this forum were helpful and finally I was able to compile and run for a while (Ubuntu 16.04). It works fast and I haven't noticed any problem with the STA. The only inconvenience for me is that the dewrap function works signific...
by zbgns
30 Oct 2017, 08:35
Forum: Scan Tailor
Topic: Scan Tailor Advanced
Replies: 103
Views: 60644

Re: Scan Tailor Advanced

I am really happy that there is still development on ScanTailor. The Advanced version looks really great and seems to work seamlessly. I am even more happy seeing that there are also plans to adapt some features available in the Experimental version. I appreciate especially the dewrap correction bei...
by zbgns
24 Aug 2017, 20:19
Forum: Software
Topic: Plustek 3800
Replies: 11
Views: 5489

Re: Plustek 3800

I don't bother scanning any book I can get some other way. It just isn't worth the effort. Most of the books I want I can get one way or another, but some just aren't available for one reason or another. So those I scan. The same like me. However, I admit that there were books available only in pap...
by zbgns
24 Aug 2017, 07:22
Forum: Software
Topic: Plustek 3800
Replies: 11
Views: 5489

Re: Plustek 3800

If you do not mind me joining the discussion on making epubs from scans, I would be happy to share my some observations on this. I like to have more control over each stage of the process so now I prefer more “manual” approach. It takes more time and effort to finalize with the epub file, but gives ...
by zbgns
05 Jul 2017, 05:11
Forum: Tutorials/How-To's
Topic: DRAFT MUG's GUIDE: Converting old books to PDF
Replies: 6
Views: 12961

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

It is worth mentioning that Tesseract can produce pdfs with text layer on its own. It deals with multipage tiffs. So after creating multipage tiff, you may generate pdf with both image and text layer by using command like this: Tesseract -l eng input.tif output pdf gImageReader is the best Tesseract...