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Ruku
Paranoid (IV) Inmate

From: Darkside of the Moon
Insane since: Aug 2003

posted posted 12-23-2003 05:29

Can anyone give me a bit of a tip on how to remove noise from a scanned photo? Just the regular RGB noise. I'll get to posting an example.

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"The Mystery of Life"
Vol. 841, Ch. 26
"All life begins with Nu and ends with Nu. This is the truth! This is my beleif! ...at least for now." - Chrono Trigger
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jstuartj
Bipolar (III) Inmate

From: Mpls, MN
Insane since: Dec 2000

posted posted 12-23-2003 09:08

You could try switching to LAB mode, use Gaussian Blur on the A and B channels and then run Despeckle and/or Dust and scratchs on the L channel. This works well for many noise types expecially Jpeg artifacts. But I takes some expermenting with various setting.

J. Stuart J.

synax
Maniac (V) Inmate

From: Cell 666
Insane since: Mar 2002

posted posted 12-23-2003 15:36

I seem to recall there being a trick where if you scan your image in at 15° and then straighten it out again in PS, that will reduce some noise. I can't personally say if this works or not since I haven't tried it.

You may also want to try scanning at large resolutions and then resizing later.

"Nothin' like a pro-stabbin' from a pro." -Weadah

jstuartj
Bipolar (III) Inmate

From: Mpls, MN
Insane since: Dec 2000

posted posted 12-23-2003 16:08

Well the 15 degree trick is mainly for scanning halftone screened origianls. Halftone screens are typically angled 15 degrees from one another, Yellow sometimes placed at a 13 degree offset. By scanning at 15 degrees, you can help prevent morie paterns from accuring. But it doen't realy help with eliminating the halftone pattern.

Ruku
Paranoid (IV) Inmate

From: Darkside of the Moon
Insane since: Aug 2003

posted posted 12-24-2003 05:38

OR - I could just chuck my $75 scanner and get a decent one.

Thanks for all the help guys. I'll show a before and after.

---
"The Mystery of Life"
Vol. 841, Ch. 26
"All life begins with Nu and ends with Nu. This is the truth! This is my beleif! ...at least for now." - Chrono Trigger
><>

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