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 Shaknum
25 Apr 2013, 22:10
Forum: R&D and New Technologies
Topic: Methods To Sense The 3D Surface/Structure Of A Book
Replies: 358
Views: 198554

Re: Methods To Sense The 3D Surface/Structure Of A Book

By the way, this new product called the Duo, http://www.kickstarter.com/projects/codelabs/duo-the-worlds-first-diy-3d-sensor , may be more suited to our usage since it is DIY and very open. I am not sure if it will provide point cloud data, but some statements on the kickstarter page sound like it d...
by Shaknum
25 Apr 2013, 22:05
Forum: R&D and New Technologies
Topic: Methods To Sense The 3D Surface/Structure Of A Book
Replies: 358
Views: 198554

Re: Methods To Sense The 3D Surface/Structure Of A Book

I have used the Leapmotion and unfortunately it won't presently work for our needs. Its main purpose is to track the movement of objects (fingers, hands, etc...) in 3D space. The SDK provides not access to point cloud data, and the demo with something looking like a point cloud seems to be something...
by Shaknum
07 Mar 2013, 09:14
Forum: Scanners and Build Threads
Topic: Your Opinions For An Alternative Book Scanning System
Replies: 20
Views: 25009

Re: Your Opinions For An Alternative Book Scanning System

I do wonder about using colored dots or something like that with OpenCV. You can easily use my software to try that out. One thing I did to really speed up and get better accuracy was to crop the picture into four quadrants: top-left, top-right, bottom-right, and bottom-left. You could certainly do ...
by Shaknum
06 Mar 2013, 13:47
Forum: Scanners and Build Threads
Topic: Your Opinions For An Alternative Book Scanning System
Replies: 20
Views: 25009

Re: Your Opinions For An Alternative Book Scanning System

Here is another workflow idea. It bypasses the biggest hassle in ScanTailor - adjustments in the selection step. hardware steps: the book scanner must have 1. a way that prevents the book from sliding up or down in the tray during capture. A thin piece of wood/cardboard/plastic pushing the book spi...
by Shaknum
27 Feb 2013, 11:09
Forum: Scan Tailor
Topic: Dewarping in bulk?
Replies: 2
Views: 3701

Re: Dewarping in bulk?

Even if your book hardly moves at all, a "bulk" dewarp would produce some pretty ugly results. You will probably need to use another scanning method to decrease your post-processing load. I looked at decapod, but it involves a lot of extra work, and I imagine it would ultimately be a wash. Sorry
by Shaknum
14 Feb 2013, 11:18
Forum: Scanners and Build Threads
Topic: New project to support avialogs.com and questions
Replies: 3
Views: 2855

Re: New project to support avialogs.com and questions

It becomes increasingly difficult to shoot the gutter of the book (the place where the pages meet the binding) if you have an angle greater than 90 degrees. I know this because I struggle with it on my custom scanner which is around 100 degrees. Less than 90 degrees can make things easier on the bin...
by Shaknum
07 Jan 2013, 14:20
Forum: Scanners and Build Threads
Topic: Scanner purpose (glossy, magazine-type pages)
Replies: 5
Views: 7156

Re: Scanner purpose (glossy, magazine-type pages)

For this application you will probably want to forget about v-shaped scanners. Instead, put a nice sheet of lexan or glass on top of the magazine on a table, use some nice strong near raking lights and mount the camera on a tripod over the magazine pointing down. If you need great quality, then get ...
by Shaknum
03 Jan 2013, 23:35
Forum: Scanners and Build Threads
Topic: Revision to Daniel's scanner
Replies: 18
Views: 8856

Re: Revision to Daniel's scanner

ai4px wrote: I'm giving consideration to making a foot treadle to raise the platen.
Cool idea. You could put a switch on the treadle so when it hits the floor it triggers the cameras, kill two birds with one stone.
by Shaknum
29 Dec 2012, 13:08
Forum: Scan Tailor
Topic: Borrowing code from Scantailor
Replies: 1
Views: 2728

Borrowing code from Scantailor

Hey all, perhaps there is a dev out there who can give me a quick answer. I've been working on a new post processing program that uses QR codes to crop and perspective transform my scans. That part of the program is finished and functional, now I would like to clean up the scans a bit before saving....
by Shaknum
29 Dec 2012, 12:43
Forum: Programs, Software releases, and more.
Topic: New OS X Post-processing Software
Replies: 6
Views: 5280

Re: New OS X Post-processing Software

As far as calculating that corner, its difficult to get at that information with zxing, unless you not the version of code it is that you are reading (which last time I looked wasn't returned in the metadata). The key is that the white space around the code is 3 segments log. So if you know the siz...