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

how to straighten curved text?

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Adam32
Posts: 28
Joined: 28 Jun 2014, 08:55
Number of books owned: 500
Country: United Kingdom

how to straighten curved text?

Post by Adam32 » 29 Jun 2014, 17:35

I have just started using Scan Tailor and really love the program. One thing I can't seem to do is correct curved / wavy text. Is there a way to do this in Scan Tailor? I am able to deskew which changes the actual orientation of the page but it does not fix text that is curved. In Abby fine reader I am able to fix this very easily using the "Straightening curved text lines" options in the image editor. I can also fix this very easily with Omnipage. Both of these programs I can just apply these filters without even needing to OCR. The problem is these are trial programs and quite expensive to buy (although I will buy them if I have no other options). So my question is, are there a free open source program like Scan Tailor that will do what I want to do?

duerig
Posts: 380
Joined: 01 Jun 2014, 17:04
Number of books owned: 1000
Country: United States of America

Re: how to straighten curved text?

Post by duerig » 01 Jul 2014, 11:20

In the 'output' step, you can enable dewarping (which is different than deskewing). See if that helps in your case. I've used it with great success, but you might have to tweak the box it uses for title pages or other special pages.

It definitely helps with keystoning issues. I would be interested to know how well it works for curved text closer to the spine.

Adam32
Posts: 28
Joined: 28 Jun 2014, 08:55
Number of books owned: 500
Country: United Kingdom

Re: how to straighten curved text?

Post by Adam32 » 04 Jul 2014, 14:27

Yes I tried that but it does not seem as good as omnipage or abby

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