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 49 matches

by reggilbert
01 Dec 2010, 02:44
Forum: Scanners and Build Threads
Topic: Simple "looking" one camera book scanner
Replies: 84
Views: 52200

Re: Simple "looking" one camera book scanner

I've run into situations where I had difficulty reading tiny subscripts here and there shooting one page with 8 MP, but so far I've been able to puzzle out what Scan Tailor drops out when doing its binarization without needing to consult the original JPEGs. I contend that a good scanning process sh...
by reggilbert
01 Dec 2010, 01:14
Forum: Scanners and Build Threads
Topic: Plustek-Bookscanner
Replies: 17
Views: 9269

Re: Plustek-Bookscanner

I guess I have a simpler question. Would it be possible to just modify the plastic casing of a cheap flatbed scanner to work similar to the Plustek scanner? My guess is no, or you would find the feature in other scanners -- having one edge of the glass nearly flush to the edge of the machine seems ...
by reggilbert
01 Dec 2010, 00:05
Forum: Lighting
Topic: Let's talk about Lighting
Replies: 90
Views: 65780

Re: Let's talk about Lighting

For those who know more about cost-effective LEDs for scanning than me: Someone commenting on one of the DealExtreme Cree Q5 product pages said that it seems like the LED price/performance sweet spot is moving on from the XR-E Q5s to the Cree XP-G series, so I checked it out. DX offers an XP-G R5 1B...
by reggilbert
29 Nov 2010, 23:53
Forum: "Destructive" Scanning
Topic: Sheet Fed Scanner for Destructive Scanning
Replies: 17
Views: 37028

Re: Sheet Fed Scanner for Destructive Scanning

Dear TooMuchToDo, I recently happened on some YouTube videos on this topic -- 1) A guy doing exactly what you plan to do, with post-chop scanning with an unspecified Fujitsu ScanSnap, at what i count as 28 duplex pages per minute: http://www.youtube.com/watch?v=-M95Ob4kIak&feature=related 2) This gu...
by reggilbert
29 Nov 2010, 23:13
Forum: Lighting
Topic: Let's talk about Lighting
Replies: 90
Views: 65780

Re: Let's talk about Lighting

I'm sorry, you have this all wrong. Let me try to explain. Thanks for setting me straight in such detail and sorry for missing the link that would have saved you the trouble. That sort of lazy participation is a problem I've seen on the site from time to time and silently criticized, and here I go ...
by reggilbert
29 Nov 2010, 14:09
Forum: Lighting
Topic: Let's talk about Lighting
Replies: 90
Views: 65780

Re: Let's talk about Lighting

I am of the opinion that LED is the only way to go for portable scanners. For all other designs, all other lighting options are alright, but for portables, nothing beats the cost, size, and weight savings of LED. But they should be power LEDs, like Cree Q5s. Folks, I am confused -- there have been ...
by reggilbert
21 Nov 2010, 21:07
Forum: Software
Topic: Preserving colored text
Replies: 20
Views: 23493

Re: Preserving colored text

And who knows, maybe ocr works better with the a grayscale image? I would doubt that. OCR works on bitonal text; if you feed a greyscale or colour image into OCR software, it converts it internally to bitonal for recognition. The reason that using the original scan can in some circumstances produce...
by reggilbert
22 Oct 2010, 22:56
Forum: Agora / The Marketplace
Topic: The Deal Thread or How To Find Cheap Cameras
Replies: 33
Views: 22018

Re: Which Cheap Camera is best for Very Large Books?

Dear drsampft, Browse through this active thread for some heavy math on megapixels, zoom factors, and page sizes: http://www.diybookscanner.org/forum/viewtopic.php?f=1&t=332&start=10 I read this a few days ago, but I think the upshot is that you will need a good bit more than 12MP for the page sizes...
by reggilbert
18 Oct 2010, 15:59
Forum: Scanners and Build Threads
Topic: Plustek-Bookscanner
Replies: 17
Views: 9269

Re: Plustek-Bookscanner

I've owned the Plustek Opticbook 3600 and now the 3600 plus. They go for around $270. The first one died after about 200 books. The second one is now at 300 books and still works fine. As a practical matter, including turning the book pages and repairing the occasional placement or page orientation ...