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

Search found 54 matches

by zbgns
14 May 2020, 14:21
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 25
Views: 114256

Re: How to convert a book to serchable pdf using open source software

My bad. I was convinced that OCRmyPDF supports jbig2 but apparently this applies only to regular pdfs.
by zbgns
06 May 2020, 09:34
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 25
Views: 114256

Re: How to convert a book to serchable pdf using open source software

Thank you for your comments and sharing details of your workflow. Nice to see, that someone found useful the thread I wrote. First I think the cover should be at the same size when scrolling the pdf file. I had some problem since I scanned the covers at higher resolutions. You are right. The scripts...
by zbgns
22 Feb 2020, 19:06
Forum: Tutorials/How-To's
Topic: From tiff-scans, ScanTailor and Tesseract to djvu-files - how?
Replies: 2
Views: 1525

Re: From tiff-scans, ScanTailor and Tesseract to djvu-files - how?

By far the most time consuming part is the OCR. I am wondering, if the -j option from ocroodjvu would speed this up (number of OCR threads)? Is there a relation between the threads and the cpu-cores. What amount of threads would be meaningful (I have an AMD cpu with 6 cores, and an nivida GPU) I gu...
by zbgns
20 Jan 2020, 18:15
Forum: Scan Tailor
Topic: What to do with a page with text and graphics
Replies: 4
Views: 1097

Re: What to do with a page with text and graphics

I attach some screenshots and hope you will find them useful. 1. Let's say there is a page with pictures and text (doesn't matter there are in grayscale, the same apply to color ones) Zrzut ekranu z 2020-01-17 22-00-59.png 2. In the "Output" stage: a. Change "Mode" from "Black and White" to "Mixed" ...
by zbgns
09 Jan 2020, 21:17
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 25
Views: 114256

Re: How to convert a book to serchable pdf using open source software

As you already wrote it was the sorting problem due to inconsistent naming of files. BTW this is not the Tesseract issue as it cannot process batch of separate files directly and the workaround is necessary by creating a list of files in right order which Tesseract may follow. This list was created ...
by zbgns
09 Jan 2020, 06:50
Forum: Scan Tailor
Topic: What to do with a page with text and graphics
Replies: 4
Views: 1097

Re: What to do with a page with text and graphics

In case where there are pages with text and photos it would be possible to apply the "mixed output" (text areas are binarized but pictures remain in color). Picture areas should be selected and indicated as picture zones and "Rectangular picture shape" mode from ST Advanced is really helpful for tha...
by zbgns
27 Aug 2019, 07:25
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 25
Views: 114256

Re: How to convert a book to serchable pdf using open source software

As I use books in pdf format as a source for TTS, I compared also, how they are read by Moon Reader Pro + Ivona TTS engine on my Android phone. The main problem was that there are erroneous additional paragraph breaks in random places what makes the listening less fluent and comfortable. I need to ...
by zbgns
06 Aug 2019, 12:38
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 25
Views: 114256

Re: How to convert a book to serchable pdf using open source software

Thanks! I am already using Scantailor for cropping, but am looking for software that would get rid of excess white space around text, and fingers, to edit my scans with before I start working with Scantailor. I use Scan Tailor Advanced for this, i.e. in order manually select area, where STA looks a...
by zbgns
05 Aug 2019, 15:42
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 25
Views: 114256

Re: How to convert a book to serchable pdf using open source software

Does anyone know of useful software for cropping scans that runs on Mac Os? I think this thread answers more or less to your question: https://forum.diybookscanner.org/viewtopic.php?f=24&p=21785&sid=0ab34fa7fd0f5ee70fc925d0d99c4f21#p21785 In short, I would recommend Scan Tailor Advanced. It is able...
by zbgns
18 Jul 2019, 03:30
Forum: HELP
Topic: How to crop and deskew pages using only free software?
Replies: 7
Views: 4865

Re: How to crop and deskew pages using only free software?

I do not expect that Scan Tailor is able to provide perfect or very good results without some manual corrections. It is universal tool but it seems you would need something more customized and tailor made. Maybe something based on OpenCV?