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

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

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

Post by Forgreforn » 21 Apr 2017, 05:35

Thanks a lot for the source code, really appreciate your effort! :D

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

Post by Konos93a » 13 Oct 2017, 13:27

it took me 2 days to figure it out but this is my method with finereader 12 and DjvuSmal 0.4.4

1 export tiff files from scantailor experimental
2 make a djvu file with DjvuSmall (lets name it test1.djvu)
3 drag n drop test1.djvu in abbyyfinereader with this settings after read and save a djvu (lets name it test3.djvu) with this settingsImage
4 with abbyfinereader save a pdf(lets name it test2.pdf) with this settings
5 with handyoutlinerfor djvu add and edit boomarks from pdf to djvu like this Image

done we have a djvu with ocr and boomarks but for 500 pages a black n white tiff from 6 mb go to 8
and one with mixed tiff 600 pages go from 30 to 45 mb

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

Post by b0bcat » 12 Feb 2018, 13:37

I just added an update to the DRAFT MUG's GUIDE at 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 can not only create rather small DjVu files using even greyscale tiff files with greater definition (e.g. 400dpi up if needed) but a searchable sub-image text layer can be included, again using free software as therein shown. And the problem of creating a DjVu file including one or more pages of mixed text and pictures (otherwise resulting sometimes in artifacts spoiling the picture part) can be worked round by saving such page(s) e.g. in DjVuSolo as photo (as opposed to e.g. scanned, perfect) and then substituting them (for any such pages that may have been DjVu encoded as 'scanned' or other default modes) using the Edit function of e.g. DjVuToy. (This workaround being an inferior means to a similar (in result) end as the djvu_imager and djvu_small application suite[*], which I found had more steps to learn before practical implementation).

[*] http://www.djvu-soft.narod.ru/scan/djvu_imager_en.htm

I don't know if licensing issues affect the permitted use of DjVu format by e.g. archive.org but their Luradoc compressed pdf files I find are a very inferior substitute; even a good multi-format reader like SumatraPDF stalls and halts in page turning while it labours to decompress whereas in my experience DjVu files scroll smoothly without such hesitation.

Last, I find DjVu metadata can now be viewed/edited using an MS Windows explorer extension:
DjVu Shell Extension Pack

I haven't yet tested whether Phil Harvey's updated exiftool can operate likewise on a DjVu file:

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