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 dtic
23 Aug 2010, 17:56
Forum: Scan Tailor
Topic: Version 0.9.9 released
Replies: 4
Views: 3569

Re: Version 0.9.9 released

Tested some more. I think the error appears only when you first remove one page (of the pair that you've previously manually adjusted the "split line" for), then remove the other page in that pair, then move to Select Content. Then one of the two pages reappears. (Contrast: when I select both pages ...
by dtic
23 Aug 2010, 16:14
Forum: Scan Tailor
Topic: Version 0.9.9 released
Replies: 4
Views: 3569

Re: Version 0.9.9 released

Is this a (known) bug? 0.9.9.1: When I remove a page (right click it in rightmost pane, click "remove from project...") at step Deskew or later then that page, under certain circumstances, reappears when I move to the next step. For example, if I remove it at Deskew then it reappears when moving to ...
by dtic
14 Aug 2010, 08:35
Forum: Programs, Software releases, and more.
Topic: Introducing djvubind for djvu file creation
Replies: 60
Views: 52394

Re: Introducing djvubind for djvu file creation

If I remember correctly tesseract uses libtiff if available, and it is in linux distros but needs installation in windows.
by dtic
14 Aug 2010, 06:18
Forum: Programs, Software releases, and more.
Topic: Introducing djvubind for djvu file creation
Replies: 60
Views: 52394

Re: Introducing djvubind for djvu file creation

Great strider! The features are clearly much more powerful than TiffDjuOCR. I'm going to try it later, have to to install a linux distro etc in virtualbox first. Your "what does it need" list forgot tesseract (though it is mentioned further up already). re ImageMagick: just in case you didn't see it...
by dtic
15 Jul 2010, 14:33
Forum: OCR/Optical Character Recognition
Topic: Adding positionally aware ocr to a djvu scan
Replies: 24
Views: 25255

Re: Adding positionally aware ocr to a djvu scan

dott: I'm glad you found it useful. And thanks for the suggestions! I'll try out tesseract 3 and minidjvu. A while ago I asked in the djvulibre dev forum for a ddjvu.exe option to output uncompressed tiff and it quickly got added (http://sourceforge.net/projects/djvu/forums/forum/103286/topic/373889...
by dtic
15 Jul 2010, 14:05
Forum: Scanners and Build Threads
Topic: auto page turner prototype
Replies: 48
Views: 49346

Re: auto page turner prototype

I'm still stuck on platen up/down movement automation. I basically lack the electronics skills needed and would need stepwise aid to pull it through (see arduino forum thread linked above). So, in a very sly move to draw attention and maybe help to this thread I hereby post a sample video of the cur...
by dtic
05 Jul 2010, 04:54
Forum: Scanners and Build Threads
Topic: CCD sensors for a "Book-Sucker"
Replies: 13
Views: 9254

Re: CCD sensors for a "Book-Sucker"

Cool idea cbmira01! I imagine that it would be really tricky to get the machine to keep the pages flush against the scanner arms though. I'm working on an automated scanned that uses a mechanical "finger" to turn pages and then the regular camera setup for capturing pages. Most of it is done. I only...
by dtic
19 Jun 2010, 08:06
Forum: Scanners and Build Threads
Topic: auto page turner prototype
Replies: 48
Views: 49346

Re: auto page turner prototype

I have scrapped the jagged rail idea. I instead aim to use the larger motor depicted (a stepper motor I think) to power a spool that winds a line secured to the platen. That allows upward lifting. Then I'll let gravity move the platen down when unwinding the spool. I'm stuck on getting the parts nee...
by dtic
16 Jun 2010, 07:44
Forum: Scanners and Build Threads
Topic: auto page turner prototype
Replies: 48
Views: 49346

Re: auto page turner prototype

Here are some images of what I'm trying to reuse for this. The 5v motor is too weak (at least in combination with the belt part). I need to use one of the stronger ones. But I need some way to attach the motor cog to the right plastic cog. Any ideas on doing that? I don't think glue will be enough f...
by dtic
16 Jun 2010, 05:29
Forum: Scanners and Build Threads
Topic: auto page turner prototype
Replies: 48
Views: 49346

Re: auto page turner prototype

I tweaked the counterweighting and now think that a smaller motor (5v) is enough, and only on one side. Are there any examples of motorized platen movement that I can learn from? My working idea is to put motor+cogwheels on the platen base and then a matching jagged plastic rail on the platen tower....