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 vitorio
30 Jun 2011, 17:30
Forum: Lighting
Topic: Strobe lighting more "accurate"?
Replies: 1
Views: 3348

Strobe lighting more "accurate"?

Came across this article discussing using strobe lights for tin plate photographic preservation: http://topdogimaging.net/blog/restoring-a-photograph-from-the-1870s The LED in the scanner that illuminates artwork emits diffused ("soft") light... Diffused light also has the tendency to flatten out th...
by vitorio
07 Mar 2011, 05:26
Forum: R&D and New Technologies
Topic: Methods To Sense The 3D Surface/Structure Of A Book
Replies: 358
Views: 221818

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

Just a heads up to those working with OpenCV, O'Reilly's "Learning OpenCV" ebook edition (PDF + all mobile, Kindle, etc. formats) is on sale for $20 (50% off) with code DDNCV: http://oreilly.com/catalog/9780596516130/
by vitorio
14 Feb 2011, 14:09
Forum: R&D and New Technologies
Topic: Methods To Sense The 3D Surface/Structure Of A Book
Replies: 358
Views: 221818

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

Golly, I leave for a few weeks and everyone gets all sorts of work done. I knew I should have posted before I left, could have saved some time and trouble perhaps. I discussed this problem with some friends and they suggested that dewarping book pages might be a solved problem in other industries, t...
by vitorio
17 Jan 2011, 20:38
Forum: R&D and New Technologies
Topic: Methods To Sense The 3D Surface/Structure Of A Book
Replies: 358
Views: 221818

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

Hey, Daniel, SparkFun has 32 individually-addressable RGB LEDs on a single 1 meter adhesive strip, might be fun for RGB differenced lighting: http://www.sparkfun.com/products/10312 I played with some software over this weekend and have a few failures to report. First, in the 90's, Steve Mann came up...
by vitorio
09 Jan 2011, 07:24
Forum: Lighting
Topic: Ionaudio Booksaver?
Replies: 100
Views: 154982

Re: Ion Book Saver

The cameras are attached to the platen, which always seemed to me like the right way to do it. Their web site doesn't have any additional information than the Engadget article, but if the price point is what they say it is, I'm totally buying one. It's not suitable for archival and preservation use,...
by vitorio
06 Jan 2011, 06:53
Forum: R&D and New Technologies
Topic: Methods To Sense The 3D Surface/Structure Of A Book
Replies: 358
Views: 221818

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

What I'm wondering now is how easy it will be to go from two camera images and 3D surface structure (I assume we'll be able to calculate this with the precision we'll need) to an "unwarped" page image. Did you see the paper I just linked, right before your post? :) Also, take a look at OpenVIDIA if...
by vitorio
06 Jan 2011, 06:40
Forum: R&D and New Technologies
Topic: Methods To Sense The 3D Surface/Structure Of A Book
Replies: 358
Views: 221818

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

Do you have that reference handy? We have people who have offered to liberate papers. Document capture using stereo vision, 2004 is the paper I was thinking of. Not that recent after all, but it's been cited since then. Feature extraction to point clouds made me think of Photosynth; I wonder if the...
by vitorio
05 Jan 2011, 16:39
Forum: R&D and New Technologies
Topic: Methods To Sense The 3D Surface/Structure Of A Book
Replies: 358
Views: 221818

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

daniel_reetz wrote:Do you have that reference handy? We have people who have offered to liberate papers.
I'll look for it again. I can also get most any papers through my alumni library access, if someone is looking for something in particular.
by vitorio
05 Jan 2011, 12:46
Forum: R&D and New Technologies
Topic: Methods To Sense The 3D Surface/Structure Of A Book
Replies: 358
Views: 221818

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

1. Look at the lines of text or borders of images on a page and extract the page curvature from them. I've been a little concerned with this one; I'll be doing design and art books where I'm not sure this will work. 4. Use two cameras to photograph both pages with overlapping information. Use this ...
by vitorio
04 Jan 2011, 13:05
Forum: R&D and New Technologies
Topic: Microsoft Kinect: infrared depth maps for dewarping?
Replies: 61
Views: 52292

Re: Microsoft Kinect: infrared depth maps for dewarping?

Primesense recently opened up their whole SDK and are offering development kits for sale, so it might be worth it to ask them. Alternately, I wonder if all of that structured light is really necessary for book dewarping. Could you get away with, say, three laser levels across the book (top 1/3, midd...