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
27 Apr 2019, 05:20
Forum: Scanners and Build Threads
Topic: a small story for my scanner
Replies: 58
Views: 27862

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: 873

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: 873

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: 8
Views: 1089

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: 569

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: 569

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: 569

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...
by cday
22 Jan 2019, 17:59
Forum: OCR/Optical Character Recognition
Topic: OCR for 78 RPM record labels
Replies: 9
Views: 569

Re: OCR for 78 RPM record labels

Some further thoughts a day on... You don't give any indication of the facilities you have available, but a better solution to the registration issue might be to place a piece of some sheet material such as plywood on top of each book rest. Those pieces could be fitted with either record center regi...
by cday
21 Jan 2019, 18:11
Forum: OCR/Optical Character Recognition
Topic: OCR for 78 RPM record labels
Replies: 9
Views: 569

Re: OCR for 78 RPM record labels

Continuing from your previous post scanning & processing 78 RPM record labels : I suggested that the registration problem might be easily overcome by [non-destructively for later book scanning] temporarily inserting some kind of round pin into each side of the book rest. You would have to find somet...
by cday
18 Jan 2019, 18:25
Forum: HELP
Topic: digitizing antique magazines
Replies: 6
Views: 563

Re: digitizing antique magazines

I do have a piece of acrylic that I can use to flatten the pages.. Is there such a thing as an anti glare coating that I could apply? I'm not immediately aware of anything suitable but there are a variety of anti-reflective glass sheets available, although their use may at least slightly reduce the...