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 spamsickle
30 May 2013, 08:09
Forum: OCR/Optical Character Recognition
Topic: improve contrast of images
Replies: 1
Views: 8085

Re: improve contrast of images

Imagemagick will do this.
by spamsickle
30 May 2013, 08:05
Forum: OCR/Optical Character Recognition
Topic: html conversion: "<b />" vs. "<p></p>"
Replies: 2
Views: 8949

Re: html conversion: "<b />" vs. "<p></p>"

Sorry for the late reply, but I'm just starting to be interested in OCR.

It would seem easy enough to write a script to replace every instance of <b/> with </p><p>, or even "replace all" with a text editor. Then, all you have to do is add a <p> at the front of the file, and strip a <p> from the end.
by spamsickle
28 May 2013, 16:04
Forum: Programs, Software releases, and more.
Topic: New Scanning Software - YASW
Replies: 29
Views: 28217

Re: New Scanning Software - YASW

BTW, while this is running I get a stream of (yasw:27663): GVFS-RemoteVolumeMonitor-WARNING **: cannot connect to the session bus: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocke...
by spamsickle
28 May 2013, 06:51
Forum: Programs, Software releases, and more.
Topic: New Scanning Software - YASW
Replies: 29
Views: 28217

Re: New Scanning Software - YASW

Glad to see you back. The changes in 0.3 make the program much easier to use. I especially like the capability to use the CNTL key to move the crop window. The PDF export is still exporting all the Left images then all the Right, rather than interleaving them. I know "Apply to all images" says "Appl...
by spamsickle
26 Apr 2013, 01:14
Forum: R&D and New Technologies
Topic: Methods To Sense The 3D Surface/Structure Of A Book
Replies: 358
Views: 254419

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 ...
by spamsickle
26 Apr 2013, 01:08
Forum: R&D and New Technologies
Topic: Methods To Sense The 3D Surface/Structure Of A Book
Replies: 358
Views: 254419

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

I just got an email that said the ship date for the Leap device was being pushed back to July anyway. In the Leap forums, someone posted pictures which made it look like it would be possible to get a depth map from the device (although now that I look at it again, it's probably just a stereo view in...
by spamsickle
25 Apr 2013, 13:01
Forum: Tutorials/How-To's
Topic: Freeware Windows workflow: 40Mb 400pg OCR'd A4 book pdfs
Replies: 13
Views: 21583

Re: Freeware Windows workflow: 40Mb 400pg OCR'd A4 book pdfs

Thanks. I meant to try Homer when I saw your praise for it previously, but still haven't gotten around to it. I have several 200+ MB PDF files I created with Scan Tailor, ImageMagick, and pdftk (though I'm not sure how many of those I still have the ScanTailor TIFFs for), and while the size doesn't ...
by spamsickle
25 Apr 2013, 12:12
Forum: R&D and New Technologies
Topic: Methods To Sense The 3D Surface/Structure Of A Book
Replies: 358
Views: 254419

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

I haven't done any work at all on dewarping, but I have done away with the platen and contented myself with scanning "warped" pages for the past couple of years. If I've said this before I apologize for repeating myself, and for letting the answer from someone who knows better slip my mind, but it s...
by spamsickle
19 Mar 2013, 23:59
Forum: Cameras and Electronics
Topic: Raspberry Pi Camera soon released - 5 megapixels, $25
Replies: 6
Views: 6835

Re: Raspberry Pi Camera soon released - 5 megapixels, $25

Five megapixels would be adequate for most books -- that's what I've been using for a couple of years now. I'm a little worried about the fact that the lens is fixed focus. It may be that it's more suited to snapshots than scanning, if its fixed focus doesn't provide a sharp image of a page which is...
by spamsickle
16 Mar 2013, 23:11
Forum: Scanners and Build Threads
Topic: Using a Cell Phone to Scan Books
Replies: 10
Views: 25799

Re: Using a Cell Phone to Scan Books

I've been kind of out of the hardware realms of this site for a couple of years (since my portable tabletop scanner for paperbacks and magazines), but this new development looks promising. I've gotten the impression that Canon has stopped making cameras which can be hacked with CHDK, and I only boug...