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

Search found 11 matches

by jera2
08 Dec 2016, 02:59
Forum: "Destructive" Scanning
Topic: What is the best ADF scanner?
Replies: 5
Views: 6005

Re: What is the best ADF scanner?

I cannot say what the best is, but I've picked up a couple of used Fujitsu fi-5120c models from my local government surplus outlet, and they work great! The images are very good, they are fast, and do both sides simultaneously. The prices were great too: $25-$30 each! About 10% of the price of a new...
by jera2
31 May 2016, 01:38
Forum: Programs, Software releases, and more.
Topic: Edge detection microfilm
Replies: 2
Views: 2452

Re: Edge detection microfilm

Imagemagick has a few edge-detector operators. It's command-line (among other things). I like the Canny edge-detector.

Typical usage:
convert SOURCE-IMAGE -canny 5x5 OUTPUT-IMAGE

http://www.imagemagick.org/script/index.php
by jera2
04 Feb 2016, 00:24
Forum: Cameras and Electronics
Topic: Canon A490 (A495) based scanner
Replies: 6
Views: 2988

Re: Canon A490 (A495) based scanner

I bought two power adapters for my powershow A490 and A495. That was a few years ago. The part number on them is:
CA-PS200
CA-PS800
Yes, both appear on the adapter.

Output is 3.15V DC.

Never had a problem with them.
by jera2
23 Feb 2015, 00:55
Forum: HELP
Topic: How much processing for the book covers?
Replies: 2
Views: 2799

Re: How much processing for the book covers?

For some of my scans, I've done quite a bit of work fixing up the covers. Sometimes, I use Inkscape (open-source vector graphics tool), put the scanned (camera) image into a layer, and then create layers in front of that for the text, the background-color, and artwork. Then I retouch each of those i...
by jera2
19 Jun 2014, 23:55
Forum: Scan Tailor
Topic: ideas on ST Picture Zone handling in mixed mode
Replies: 9
Views: 4894

Re: ideas on ST Picture Zone handling in mixed mode

Hi dtic, I think your suggestions are good! And I didn't know one could delete the default picture zone. That always annoyed me to no end. So thanks for pointing that out! I use about the same workflow, starting off with everything in B/W mode and then changing to mixed-mode on pages as needed. I re...
by jera2
05 May 2014, 00:24
Forum: Software
Topic: Learning to Create Tiny DJVU files
Replies: 35
Views: 43252

Re: Learning to Create Tiny DJVU files

I too want to chime in and express my thanks, Richard, for all your posts. Very informative, and if I ever get around to working with this area on my own, I will study your posts again!
by jera2
26 Jan 2014, 02:04
Forum: Cameras and Electronics
Topic: The best way to shot and download pictures to computer
Replies: 16
Views: 12426

Re: The best way to shot and download pictures to computer

If you're using chdkptp, here are a few examples to help you; I find the documentation for chdkptp sort of scattered. First, connect your cameras to your computer and find their IDs: chdkptp -elist Next, using the unique parts of each camera's IDs, you can download all the pictures on the camera at ...
by jera2
29 Nov 2012, 05:24
Forum: Cameras and Electronics
Topic: Camera Triggering
Replies: 42
Views: 69067

Re: Camera Triggering

I've been using a motion-detection trigger for my book scanner, and it works quite well. The way it works is that it first focuses the camera(s) and then begins the motion/no-motion state-machine. This state-machine loop waits for motion (lifting the platen, changing the page) and then waits for a p...
by jera2
24 Aug 2011, 01:58
Forum: Cameras and Electronics
Topic: Minimum Camera for Book Scanning
Replies: 84
Views: 112733

Re: Minimum Camera for Book Scanning

Is this camera canon a495 a good one for building a bookscanner? I recently got an A490 and it works fine for book scanning. The A495 is pretty similar; I'll know for sure when the one I ordered arrives. It's the same 10 MP, supported by CHDK, so I'm hoping it will work well as my second camera. I ...
by jera2
16 Aug 2011, 21:47
Forum: Cameras and Electronics
Topic: Minimum Camera for Book Scanning
Replies: 84
Views: 112733

Re: Minimum Camera for Book Scanning

I noticed today that amazon.com has new Canon A495 cameras (blue) for $49.