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 cday
31 Aug 2019, 14:59
Forum: Software
Topic: Edge cleaning?
Replies: 2
Views: 930

Re: Edge cleaning?

I have been seeking something (Linux command line batch style) that cleans the edges of .jpg scans. Something that just replaces a few millimeters on the left and right with white. I am sure this can be done with imagemagick somehow, I just haven't figured it out yet. The imagemagick forum is proba...
by cday
17 Jul 2019, 16:07
Forum: Programs, Software releases, and more.
Topic: djvu 1bit vs 8bits
Replies: 6
Views: 1304

Re: djvu 1bit vs 8bits

PDF in Abbyy. djvu with djvu small mod. Which Abbyy FineReader version? Some years ago I looked briefly at MRC in both FineReader and Nuance OmniPage 18, and with the number of options available and the interface design it wasn't easy to understand how MRC output images were produced, even after st...
by cday
08 Jul 2019, 14:49
Forum: "Destructive" Scanning
Topic: Please recommend paper cutter
Replies: 6
Views: 1062

Re: Please recommend paper cutter

Another thought: possibly take the book or books to a business that has a high-quality commercial guillotine... I get paper pads cut very cleanly and very quickly at a local business that provides office services, the pads aren't as thick as a book and I don't know what the thickness limit would be....
by cday
27 Apr 2019, 05:20
Forum: Scanners and Build Threads
Topic: a small story for my scanner
Replies: 59
Views: 31730

Re: a small story for my scanner

Thanks for posting your progress. I took one of the images that you posted and reduced the number of levels in Photoshop to reveal the uneven lighting you have across the pages. In the image of both of the book's pages, the light looks as if it were pointed at the lower half of the page. A 'levels'...
by cday
17 Mar 2019, 13:05
Forum: Scanners and Build Threads
Topic: FADGI Compliance?
Replies: 5
Views: 1407

Re: FADGI Compliance?

[No option now to delete unexplained spurious post, could a moderator please delete... ;) ]
by cday
17 Mar 2019, 13:03
Forum: Scanners and Build Threads
Topic: FADGI Compliance?
Replies: 5
Views: 1407

Re: FADGI Compliance?

What does "FADGI" mean? A Google search directs to the U.S. agency Federal Agencies Digitization Guidelines Initiative and at a quick look the standard referred to is likely the following: Technical Guidelines for Digitizing Cultural Heritage Materials Some of the other guidelines may possibly also...
by cday
11 Feb 2019, 15:41
Forum: Scanners and Build Threads
Topic: Another book shooter Mk-V
Replies: 9
Views: 2414

Re: Another book shooter Mk-V

Good progress, and your image enhances quite well with a simple levels adjustment, although I had to use quite aggressive settings that may have had some adverse effect on the image if it is examined closely: IMG-20190210-191017_Levels.jpg With a less aggressive adjustment there was still some varia...
by cday
24 Jan 2019, 14:25
Forum: OCR/Optical Character Recognition
Topic: OCR for 78 RPM record labels
Replies: 9
Views: 2276

Re: OCR for 78 RPM record labels

If I were going to do this I'd get a 12"x12" piece of 1/4" MDF, put a 1/4" dowel coming out the center of it and stick that to the wall with double-stick tape. I'd put a camera on a tripod about 6' back, pointed at that dowel, and have two clip-on lights to the right and left of the tripod to light...
by cday
23 Jan 2019, 11:08
Forum: OCR/Optical Character Recognition
Topic: OCR for 78 RPM record labels
Replies: 9
Views: 2276

Re: OCR for 78 RPM record labels

Small detail: your laser level marker idea is neat, but I doubt if it is needed as in another quick test, text rotated by 2º was read successfully by the Abbyy screen reader, and text can be eyeballed horizontal to a much closer tolerance than that.
by cday
22 Jan 2019, 18:04
Forum: OCR/Optical Character Recognition
Topic: OCR for 78 RPM record labels
Replies: 9
Views: 2276

Re: OCR for 78 RPM record labels

Thanks for the reply. I thought of a using a spindle, the catch there is that the Archivist has a "V" shaped tray that gets elevated to the underside of a likewise "V" shaped glass platen (2 camera system,) so I would need to use something of a height and material that would not damage the glass. T...