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 jbaiter
23 Jan 2014, 19:51
Forum: Programs, Software releases, and more.
Topic: Optipdf: an online-effort to do automated post-processing
Replies: 22
Views: 9372

Re: Optipdf: an online-effort to do automated post-processin

-- nevermind, replied without bothering to refresh for new replies .-)
by jbaiter
14 Jan 2014, 12:32
Forum: Programs, Software releases, and more.
Topic: Optipdf: an online-effort to do automated post-processing
Replies: 22
Views: 9372

Re: Optipdf: an online-effort to do automated post-processin

I just saw on your webpage that you're using LZW for bi-color images, you might want to take a look at JBIG2 (google for jbig2enc), it's a PDF-compatible compression algorithm that is vastly more efficient.
by jbaiter
06 Jan 2014, 18:49
Forum: Programs, Software releases, and more.
Topic: Introducing spreads: command-line workflow tool
Replies: 80
Views: 39352

Re: Introducing spreads: command-line workflow tool

spomwii just notified me that the installation via "pip install spreads" currently installs 0.4.1, not 0.4.2.
To work around that, please download the tarball from here: https://pypi.python.org/pypi/spreads

Install it via "pip install spreads-v0.4.2.tar.gz" and you should be good!
by jbaiter
05 Jan 2014, 17:00
Forum: Programs, Software releases, and more.
Topic: Introducing spreads: command-line workflow tool
Replies: 80
Views: 39352

Re: Introducing spreads: command-line workflow tool

I just released 0.4.2 to PyPi, so just run 'pip install --upgrade spreads' to get the latest version. What has changed: Fix for packaging issues Small bugfix for older Tesseract versions, where the "--list-langs" option is not available Small bugfix for terminals that don't support all UTF8 characte...
by jbaiter
30 Dec 2013, 14:58
Forum: HELP
Topic: Convert PDF to Kindle format
Replies: 5
Views: 4199

Re: Convert PDF to Kindle format

Hm, okay, that is weird! If you can select text your PDF reader, you have a hidden text layer, which calibre should be able to detect and extract.... But if you're using spreads, you can go a far easier route: Check your output folder, if you used the tesseract plugin, there should be a html-file th...
by jbaiter
30 Dec 2013, 06:21
Forum: HELP
Topic: Convert PDF to Kindle format
Replies: 5
Views: 4199

Re: Convert PDF to Kindle format

I think if your PDF does not have a text layer, Calibre will create a mobi with just the page images, which gives you exactly zero benefits, except bloated file size ;) So your first step should be to run OCR on your PDF, either using Acrobat itself (if you have the full version) or something like T...
by jbaiter
28 Dec 2013, 07:02
Forum: Programs, Software releases, and more.
Topic: Introducing spreads: command-line workflow tool
Replies: 80
Views: 39352

Re: Introducing spreads: command-line workflow tool

@spomwii: That's a known problem, I unfortunately messed up the packaging for 0.4.1. Once I get back from 30c3, I will prepare a 0.4.2 that should resolve these issues. @mera451: My plan for windows-compatibility would actually be to ship a fully bundled version of the Python runtime, the required l...
by jbaiter
25 Dec 2013, 18:13
Forum: Programs, Software releases, and more.
Topic: Introducing spreads: command-line workflow tool
Replies: 80
Views: 39352

Re: Introducing spreads: command-line workflow tool

A stupid mistake of mine... The distribution package was missing some modules...
I already had them installed on my machine, that's why I didn't catch it. I just pushed 0.4.1 to GitHub and PyPi, please run 'pip install -U spreads' and try again.
Sorry!
by jbaiter
25 Dec 2013, 15:02
Forum: Programs, Software releases, and more.
Topic: Introducing spreads: command-line workflow tool
Replies: 80
Views: 39352

Re: Introducing spreads: command-line workflow tool

spomwii wrote:Thanks! Looking forward to test this. Is it possible to upgrade from the old version? Or should I make a "clean" install?
If you've installed via pip, it should be enough to run "pip install -U spreads". Be aware of the changed external dependencies, though (chdkptp) :-)