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

Search found 27 matches

by RichardT
03 May 2012, 14:34
Forum: Software
Topic: Learning to Create Tiny DJVU files
Replies: 35
Views: 41513

Re: Learning to Create Tiny DJVU files

hmmm.... when I selected DJVU as my format of choice, it was based on the appealing technical merits of the format. However, I've been looking around and DJVU is definitely giving me the impression that it's dying out. That could be incorrect , but that's the impression it's giving me. Witness: Djvu...
by RichardT
30 Apr 2012, 10:54
Forum: Software
Topic: Learning to Create Tiny DJVU files
Replies: 35
Views: 41513

Re: Learning to Create Tiny DJVU files

Today's topic: working with PDF files as input. As I mentioned in my first post, I am practicing on PDF files to make sure I am competent before I (destructively) scan all my books. In the process, I have learned a few things. Tip #1 Don't use Imagemagick (convert) to split a PDF file into individua...
by RichardT
30 Apr 2012, 00:02
Forum: Software
Topic: Learning to Create Tiny DJVU files
Replies: 35
Views: 41513

Re: Learning to Create Tiny DJVU files

Today's topic: encoding efficiently. I arrange my workflow so that all text goes through minidjvu, and then any pictures are grafted onto the text pages afterwords via djvumake. But, when encoding a 300-page book, you don't want a single minidjvu process... you want at least 1 per core going. So, fo...
by RichardT
27 Apr 2012, 00:42
Forum: Software
Topic: Learning to Create Tiny DJVU files
Replies: 35
Views: 41513

Re: Learning to Create Tiny DJVU files

Ok, so today I tried some pages with both pictures AND colored text. And, as usual, I want all the text to run through minidjvu for best quality and size. For the colored text, I tried the code given in this post , but it didn't quite work for me. I did find a similar method that seems to be working...
by RichardT
26 Apr 2012, 15:00
Forum: Software
Topic: Learning to Create Tiny DJVU files
Replies: 35
Views: 41513

Re: Learning to Create Tiny DJVU files

Today's topic is: callout boxes and shaded tables. I have plenty of books that have occasional call-out boxes where the text is still black, but the background is grey or some other light color. Similarly, many tables of information have blocks of rows shaded to aid the reader. How to deal with thes...
by RichardT
25 Apr 2012, 11:42
Forum: Software
Topic: Learning to Create Tiny DJVU files
Replies: 35
Views: 41513

Re: Learning to Create Tiny DJVU files

A couple related observations regarding mixing text and images. ONE : I don't see a use case for cpaldjvu. When I was first looking over the toolset I assumed I'd use it all the time. But... its output spans the background, foreground, and mask layers of the djvu output. Since I want to work with im...
by RichardT
25 Apr 2012, 11:17
Forum: Software
Topic: Learning to Create Tiny DJVU files
Replies: 35
Views: 41513

Learning to Create Tiny DJVU files

Hi all, I'm contemplating scanning all my physical books to djvu, and am practicing by converting some PDFs I have around (some which were good scans, some not so good). I figure that would give me practice cleaning up images and creating the smallest high-quality representation possible. I'm only a...