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
11 Feb 2019, 08:14
Forum: HELP
Topic: pdfbeads on Ubuntu 18.10
Replies: 3
Views: 158

Re: pdfbeads on Ubuntu 18.10

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...
by zbgns
11 Feb 2019, 05:53
Forum: HELP
Topic: pdfbeads on Ubuntu 18.10
Replies: 3
Views: 158

Re: pdfbeads on Ubuntu 18.10

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...
by zbgns
29 Jan 2019, 19:11
Forum: Scanners and Build Threads
Topic: Another book shooter Mk-V
Replies: 8
Views: 467

Re: Another book shooter Mk-V

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...
by zbgns
14 Nov 2018, 20:35
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 10
Views: 102977

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

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 ...
by zbgns
07 Nov 2018, 07:58
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 10
Views: 102977

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

(...) 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...
by zbgns
31 Oct 2018, 17:49
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 10
Views: 102977

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

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...
by zbgns
29 Oct 2018, 20:07
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 10
Views: 102977

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

(...) 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...
by zbgns
26 Oct 2018, 18:56
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 10
Views: 102977

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

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...
by zbgns
25 Oct 2018, 19:35
Forum: Cameras and Electronics
Topic: Raspberry PI camera?
Replies: 19
Views: 103142

Re: Raspberry PI camera?

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...
by zbgns
25 Oct 2018, 11:24
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 10
Views: 102977

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

(...), always interesting to read about what workflow people have. Thanks for your interest and comments. (...) So you only have to press the Down key to step preview every tenth image then? Unfortunately not. It is necessary to scroll down with mouse and click on thumbnails in a column. However th...