DIY Book Scanner

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 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...

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 "Bla...

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 ...

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 re...

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 ...

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...

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...

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?

PDF in Abbyy. djvu with djvu small mod. I do not have much experience with Abbyy Finereader. However I would guess is that in case of 1 bit pictures there is jbig2 compression applied and no MRC compression is necessary. In case of grayscale images, algorithms do separation of foreground (letters) ...