DIY Book Scanner

I have a question though: is it possible to somehow correct OCR output from Tesseract other than editing the pdf in Acrobat (I don't feel like paying monthly for that)? I've been trying to do OCR with gImageReader on Linux. It uses Tesseract and you can preview txt file, but to actually correct it,...

Hmm, don't think it's this that is the cause - Ubuntu package for ImageMagick has never had jpeg2000 in my memory and pdfbeads has been falling back to JPEG quite happily for years (iunluding in at least but not limited to 18.04, 17.10, 17.04 and 16.04). The hard crash is new in Ubuntu 18.10. There...

Another version of Ubuntu, another breakage in PDFbeads and dependencies. The standard ImageMagick version in Ubuntu’s repositories doesn’t support jpeg2000 compression. You need to compile newer version of ImageMagick to have this (it may be tricky as there are other dependencies that need to be r...

I also started from similar cardbord prototype and acrylic glass in order to test how it may work for me. Further to your description my thoughts are following: 1. Even lighting is very difficult to obtain in this kind of device. You may try to reduce it by: a. more square shape of the glass in orde...

I performed small comparison of the free method with Adobe Acrobat (Pro DC 15) output. It was much more tricky that I had expected. The comparison is based on the same book I previously scanned and processed. This is what I obtained: 1. Speed _____________ Adobe Acrobat ____ Open software Combining ...

(...) I think that completing metadata may be part of this script, but I have not looked for a solution for that yet. I worked on the script a little bit. The metadata function has been implemented. I need to prepare the ToC text file where also metadata are placed and the script is able to read th...

Thank you dtic for this hint. It is very interesting, albeit I'm not able to implement it directly now. I use iPhone as a camera (I do not even have a Cannon camera) and I do not think there is any software that can send images to my computer directly after they are taken. I thought about sending vi...

(...) As I use CLI tools for significant part of work, there may be bash script written, which will run all commands in sequence instead of me. It seems that my script works. So the workflow looks like this: 1. scanning 2. transfer of images to the computer 3. check whether they are in proper order...

Yes, BookCrop only works well if all pages are at roughly the same position in the photos. One solution is to have some part of the scanner setup that holds the book cover/spine in a fixed position when shooting. Otherwise some other, smarter tool that reliably detects the page edges in the photo i...

Maybe resolution of images you load to FineReader is too big? I mean especially images taken by Canon. It needs to be taken into consideration that OCR systems do not like both too low and too big DPI. Usually optimal is 300 DPI as OCR engines are trained to work with images of this resolution. It a...