dust and scratches lowest setting affecting text

Forum|Forum|7 years ago
February 17, 2019
4 replies
538 views

Hi,

CS6

I have a scan A4 300dpi of typed text but its peppered with 3 pixel diameter black specks. counting the faint shades of grey in this, whilst text is 6 pixels wide (ditto shades)

I use filter noise dust and scratches but even on lowest setting radius 1 threshold 0 it blurs up the distinction in for example a or e between the arm and the circly bit !

I wish it would look for specks as such anything the user defines, so user says 3 pixel diameter and it isolates its attention to that. ignore anything that is linear or more than 3 pixels diameter.

as such I cant use it to dedust, and have to do all 6 pages speck by speck.

Any better tools out there for a such a simple fundamental task ?

Merlin

This topic has been closed for replies.

jane-e

Community Expert

Merlin3 wrote
I have a scan A4 300dpi of typed text but its peppered with 3 pixel diameter black specks. counting the faint shades of grey in this, whilst text is 6 pixels wide (ditto shades)

Hi Merlin,

Can you post your document using a file share service such as Drop Box so we can look at it? If you scanned it yourself and still have the original, can you re-scan at 600 ppi?

~ Jane

Trevor.Dennis

Community Expert

Could you use OCR to reproduce the text? Or does it absolutely have to be the original page?

Our jane-e is an expert on this sort of thing.

jane-e

Community Expert

Trevor.Dennis wrote
Could you use OCR to reproduce the text? Or does it absolutely have to be the original page? Our jane-e is an expert on this sort of thing.

Thanks, Trevor — I am not in my office now so Merlin3 should post to this forum: Scanning & OCR for a quicker response. A screen shot of part of the page would be helpful. OCR works best with readable text, and it sounds like this may be an issue. If a human can‘t tell the difference between the “a” and the “e”, a machine may have the same trouble.

That space in the middle of a letter is called a “counter”, by the way, but I like “circly bit”, too.

If no one answers there, I can take a look at a page later.

~ Jane