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
29 Oct 2018, 20:07
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 20
Views: 110629

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: 20
Views: 110629

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: 106349

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: 20
Views: 110629

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...
by zbgns
24 Oct 2018, 14:52
Forum: Tutorials/How-To's
Topic: How to convert a book to serchable pdf using open source software
Replies: 20
Views: 110629

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

This is continuation of my previous thread about digitization of a book https://forum.diybookscanner.org/viewtopic.php?f=14&p=21548#p21548 . It was about hardware part, namely capturing pages. Now I’m going to describe my method of processing these files to obtain a book in electronic form. My expec...
by zbgns
24 Oct 2018, 07:57
Forum: Scan Tailor
Topic: How to output exact image dimensions
Replies: 8
Views: 102477

Re: How to output exact image dimensions

Stage 4 Page Box disabled Content Box auto. After this you need to check whether Scan Tailor chose properly contents on all pages. If any adjustments are necessary, do them manually. In the right hand bottom corner you have a box in which you may change order of pages. Change from 'natural order' to...
by zbgns
24 Oct 2018, 04:11
Forum: Scan Tailor
Topic: How to output exact image dimensions
Replies: 8
Views: 102477

Re: How to output exact image dimensions

I meant rather simple stretching of images to the size you want. 'Squeezing" if there are too big or "distending" if there are too small. As there should be only slight difference in case of your output files, "resize" operation should give sufficient result: no visible geometry distortions or degra...
by zbgns
23 Oct 2018, 21:23
Forum: Scan Tailor
Topic: How to output exact image dimensions
Replies: 8
Views: 102477

Re: How to output exact image dimensions

Well, the advice is about, how to output images that as exactly of dimensions you want to obtain after processing in Scan Tailor. Ghost Script is to create a template with proper dimensions. You need to add one extra page fitting to the size. As your input pages have desired sizes, the workflow woul...
by zbgns
23 Oct 2018, 17:57
Forum: Scan Tailor
Topic: How to output exact image dimensions
Replies: 8
Views: 102477

Re: How to output exact image dimensions

I guess, you may be interested in this how-to: https://forum.diybookscanner.org/viewtopic.php?f=19&t=3495 . Another solution is to resize output images. E.g. XnView offer batch resizing of images. I would probably use ImageMagick for that: mogrify -path resized/ -density 300 -units PixelsPerInch -re...
by zbgns
18 Oct 2018, 20:27
Forum: Scanners and Build Threads
Topic: My implementation of the Book shooter MK-V design
Replies: 0
Views: 18883

My implementation of the Book shooter MK-V design

Inspired by the project presented in the following thread: https://forum.diybookscanner.org/viewtopic.php?f=14&t=3501 , I built my clone of the Book shooter MK-V originally designed by Hiroshi Yanagisawa. Dimensions are pretty the same, however I did not follow all build instructions, using some dif...