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 dpc
15 Dec 2017, 14:15
Forum: Tutorials/How-To's
Topic: Converting Color/Grayscale Text Scans to Black & White
Replies: 32
Views: 16505

Re: Converting Color/Grayscale Text Scans to Black & White

Are you in some way affiliated with CZUR?

You've replied to a number of posts on this website and it's always recommending the purchase of a CZUR scanner. This seems like spam to me, but I'll let the moderators decide this or not.
by dpc
06 Dec 2017, 12:37
Forum: Scanners and Build Threads
Topic: [Flatbed] Putting weight on the spine
Replies: 8
Views: 242

Re: [Flatbed] Putting weight on the spine

Something else you could try is to use a hinged lever to put downward pressure on the book's spine. That would make it easier easier on your hands at the expense of having to lift the lever each time you turned the page.
by dpc
22 Nov 2017, 19:57
Forum: Programs, Software releases, and more.
Topic: chdlptp problems
Replies: 1
Views: 85

Re: chdlptp problems

I've never attempted using PTP to camera loaded with CHDK but since no one else has chimed in maybe some of the things mentioned in this will help: CHDK PTP Extension Wiki FAQ.
by dpc
10 Nov 2017, 12:16
Forum: Scanners and Build Threads
Topic: Advice on Lighting
Replies: 2
Views: 111

Re: Advice on Lighting

I made something similar to this as a quick prototype in order to acquire enough sample images to work on my software post-processing pipeline prior to building a more substantial scanner. My design differed from yours in that rather than have the camera pointing up, I made a horizontal rectangular ...
by dpc
10 Nov 2017, 11:07
Forum: Scanners and Build Threads
Topic: [Flatbed] Putting weight on the spine
Replies: 8
Views: 242

Re: [Flatbed] Putting weight on the spine

For something that would put weight on it, how about a bag of water? It would be nice and flexible, so it would match the contour of the book and you could add more weight by using more water. If you want something flat you could use a board and put a jug of water on top of that. Maybe sand (for ex...
by dpc
01 Nov 2017, 09:07
Forum: Scanners and Build Threads
Topic: Archivar - wooden scanner based on Archivist
Replies: 22
Views: 996

Re: Archivar - wooden scanner based on Archivist

If I had the task of scanning a large number of paperbacks (small, "normally closed" books) with text near the gutter and I was going to binarize the output using something like ScanTailor, I wouldn't even use a platen. I'd build a v-shaped cradle, use two cameras and an overhead light, and then hol...
by dpc
05 Oct 2017, 15:58
Forum: Scanners and Build Threads
Topic: Monson's Sticks: Cheap Single Camera Rig with Remote
Replies: 26
Views: 23234

Re: Monson's Sticks: Cheap Single Camera Rig with Remote

I am wondering if anyone has any information about how this works with paperback books.
My main concern would be the thickness of the stick preventing you from getting close to the gutter.
by dpc
04 Oct 2017, 14:36
Forum: Scanners and Build Threads
Topic: a small story for my scanner
Replies: 34
Views: 3562

Re: a small story for my scanner

In the photo you posted, the camera is casting a large shadow across the page due to the light source being over the camera. I'm assuming that for scanning you place the light elsewhere to prevent this? If you post additional photos, can you you include a shot of the scanner with the light in the po...
by dpc
12 Sep 2017, 13:17
Forum: Scanners and Build Threads
Topic: Two cameras in a cube of plexiglass (inverted design, ≈ 1000 pp/h)
Replies: 5
Views: 631

Re: Two cameras in a cube of plexiglass (inverted design, ≈ 1000 pp/h)

Thanks for sharing your design. Good job! I had built something like this a few years ago except it was a single camera scanner. I did it to capture sample pages while I was developing my software post-processing pipeline so the throughput wasn't that critical. Imagine an open-sided retangular tube ...
by dpc
22 Aug 2017, 14:58
Forum: Show and Tell / Book Projects
Topic: Going to the Maker Faire
Replies: 5
Views: 517

Re: Going to the Maker Faire

Good luck this weekend. Let us know how it turns out and what sort of interest there is for DIY book scanning.