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 Gerard
12 Nov 2010, 16:41
Forum: Software
Topic: Software Requests (Besides Dewarping)?
Replies: 28
Views: 20428

Re: Software Requests (Besides Dewarping)?

it would be nice if the working chain (croping, filtering and so on) could use plugins, a plugin could just be an command line with command parameter substitute this would allow to use other command line programs in you software just give the user an text area and some variables e.g. "imageapp -crop...
by Gerard
12 Nov 2010, 04:13
Forum: Software
Topic: Software Requests (Besides Dewarping)?
Replies: 28
Views: 20428

Re: Software Requests (Besides Dewarping)?

Vectorization http://www.diybookscanner.org/forum/viewtopic.php?f=3&t=645 potrace works but does not cover some text features every character is saved as vector image, it would be a improve in file size and letter quality if the letters would be analysed so the shape of an "a" is saved only once in ...
by Gerard
12 Nov 2010, 02:14
Forum: R&D and New Technologies
Topic: Dewraping with focus stacking
Replies: 26
Views: 21974

Dewraping with focus stacking

Hi, i just wont to ask, how accurate (minimal step) it is possible to change the focus, from a series of images with different focus, it is maybe possible calculate a 3d map and then dewrap the page(s) if we have a stack (maybe a video with continues changing focus) it is possible to calculate the l...
by Gerard
07 Nov 2010, 13:08
Forum: OCR/Optical Character Recognition
Topic: Vectorization
Replies: 25
Views: 25136

Re: Vectorization

potrace works quite nice
input:
input.png
input.png (3 KiB) Viewed 11139 times
output (default settings)
potrace output.png
potrace output.png (10.81 KiB) Viewed 11139 times