Search found 5 matches
- 09 Nov 2018, 13:14
- Forum: Lighting
- Topic: Using a polarizing filter to suppress glare and lighting reflections?
- Replies: 8
- Views: 86558
Re: Using a polarizing filter to suppress glare and lighting reflections?
Oh shoot, I'm sorry to hear that! The forum is behaving strangely for me, it threw a 500 error at least once and is taking forever to load. I really do appreciate the effort you put in, even if I can't see it yet :) The CPL arrived yesterday, and it may be premature but I think this thing is magic. ...
- 06 Nov 2018, 09:42
- Forum: Lighting
- Topic: Using a polarizing filter to suppress glare and lighting reflections?
- Replies: 8
- Views: 86558
Re: Using a polarizing filter to suppress glare and lighting reflections?
Thanks for the resources. And yeah, looking at the design for the Archivist I can see the ideal angle is 100 degrees. I wouldn't mind taking a look at those formulas. My primary goals for my scanner are portability and price (hence trying to cut corners with the polarizing filter), but the more I ca...
- 05 Nov 2018, 15:51
- Forum: Lighting
- Topic: Using a polarizing filter to suppress glare and lighting reflections?
- Replies: 8
- Views: 86558
Re: Using a polarizing filter to suppress glare and lighting reflections?
Thanks for the suggestions. You're right, ideally the scanner would be designed to make glare a non-issue. When I start committing a design to paper or CAD, I'll take the cradle angle/light heights etc. into consideration. I'm still wondering if using a polarizing lens would be a cheap and easy solu...
- 05 Nov 2018, 10:01
- Forum: Lighting
- Topic: Using a polarizing filter to suppress glare and lighting reflections?
- Replies: 8
- Views: 86558
Using a polarizing filter to suppress glare and lighting reflections?
The biggest problem I had with my last scanner (which I scrapped) was the dreaded reflections and glares caused by the glass platen. Even worse, I was photographing books with glossy-coated pages, so I was getting reflections from the opposite page that were strong enough to throw off the OCR. This ...
- 29 Sep 2016, 08:34
- Forum: OCR/Optical Character Recognition
- Topic: How to edit the text layer of a PDF?
- Replies: 3
- Views: 11651
How to edit the text layer of a PDF?
Hi all, I'm in the process of building my scanner, so I haven't completed any projects yet, but I have made a couple of PDFs using photos from the Internet Archive. My question is about how one would modify the text layer of a PDF. Google doesn't seem to be very helpful about it. I'm using Tesseract...