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 russca
11 May 2016, 09:50
Forum: Tutorials/How-To's
Topic: Converting Color/Grayscale Text Scans to Black & White
Replies: 34
Views: 34630

Re: Converting Color/Grayscale Text Scans to Black & White

In particular, russca, I've been following the instructions from your video tutorial and have been largely successful in reproducing your results using blending mode, including running my first Photoshop automated batch. It works well when the page is just text but I've had a lot of difficulty when...
by russca
11 May 2016, 09:25
Forum: Tutorials/How-To's
Topic: Converting Color/Grayscale Text Scans to Black & White
Replies: 34
Views: 34630

Re: Converting Color/Grayscale Text Scans to Black & White

So when as is usually the case searchability is required, FineReader, or the Nuance OmniPage equivalent if there is one, would likely be the easiest direct solution to removing background colouration, although always subject to the level of collateral damage when the images are processed, which may...
by russca
10 May 2016, 14:47
Forum: Tutorials/How-To's
Topic: Converting Color/Grayscale Text Scans to Black & White
Replies: 34
Views: 34630

Re: Converting Color/Grayscale Text Scans to Black & White

...other than the need to OCR the resulting output file if searchability is required... My off-topic two cents. These days text searchability is a must. Obviously a lot depends on the quality of scanned text files and the OCR program. I don't buy "File size" argument anymore. The storage drives are...
by russca
10 May 2016, 12:59
Forum: Tutorials/How-To's
Topic: Converting Color/Grayscale Text Scans to Black & White
Replies: 34
Views: 34630

Re: Converting Color/Grayscale Text Scans to Black & White

And since I almost never work with photos, my familiarity with image-editing programs like Photoshop or Gimp is pretty rudimentary. :cry: Just follow my Photoshop video tutorial and you'll get the results you want. Can't get any easier when batch automated. For OCR you can use Abbyy FineReader. It'...
by russca
23 Oct 2015, 15:52
Forum: Scanners and Build Threads
Topic: Best non-DIY book scanners
Replies: 44
Views: 44388

Re: Best non-DIY book scanners

I have used Fujitsu ScanSnap S500, which I guess is ancient predecessor of Fujitsu ScanSnap iX500. One thing that you need to check is whether scanner supports uncompressed output, if that is important to you. For example, Scanscan S500 don't support uncompressed output. And it won't be enough if y...
by russca
21 Oct 2015, 18:17
Forum: Scanners and Build Threads
Topic: One size doesn't fit all --or how to scan larger books
Replies: 6
Views: 13191

Re: One size doesn't fit all --or how to scan larger books

In my view the only two limits to DIY scanning of larger books are creativity and budget. There are multiple ways to go. For DIY bookscanning of rare or important larger-sized books, I would do this: 1) Buy a decent DSLR camera and a 50 mm prime lens. For example, Canon EOS 5DS has 50 megapixel sens...
by russca
16 Oct 2015, 23:59
Forum: Tutorials/How-To's
Topic: Converting Color/Grayscale Text Scans to Black & White
Replies: 34
Views: 34630

Re: Converting Color/Grayscale Text Scans to Black & White

I've had so many unsatisfactory black & white scan results that I had to come up with a way of fixing them. I read about Screen/Multiply blending modes in one of the Photoshop Photography books I have for correcting over/underexposed pictures. I started experimenting with them for text scans and the...
by russca
13 Oct 2015, 09:38
Forum: Tutorials/How-To's
Topic: Converting Color/Grayscale Text Scans to Black & White
Replies: 34
Views: 34630

Re: Converting Color/Grayscale Text Scans to Black & White

Time spent in familiarisation with the available scanning options is usually time well spent. Additionally, I examine each book before proceeding with scanning and select appropriate steps to maximize quality of scans. And then I test till I get acceptable results. One of the steps is choosing the ...
by russca
11 Oct 2015, 09:03
Forum: Tutorials/How-To's
Topic: Converting Color/Grayscale Text Scans to Black & White
Replies: 34
Views: 34630

Re: Converting Color/Grayscale Text Scans to Black & White

I managed to to get Photoshop Elements 8 to do the same thing except automatic batch mode. I have a number of books from Internet Archive which often come yellow tint/hue page. I can remove the yellow on text pages (with InFix, a pdf editor) but it has been a problem to remove it in photos. Up to n...
by russca
11 Oct 2015, 08:49
Forum: Tutorials/How-To's
Topic: Converting Color/Grayscale Text Scans to Black & White
Replies: 34
Views: 34630

Re: Converting Color/Grayscale Text Scans to Black & White

For good measure, here are the original color and grayscale scans:
color-grayscale-scans.jpg
color-grayscale-scans.jpg (251.81 KiB) Viewed 19310 times