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Old Oct 14, 2002, 8:34 AM   #1
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Default noise

what is the easiest way to clean up noise in digi pics?...ie...i shot a under exposed pic...if you lighten up the pic..you can really see the grain or noise...maybe some filters? ie. in photoshop 7.0
i also tried neatimage software...works ok on some pics but over does it on other pics
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Old Oct 15, 2002, 5:15 AM   #2
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Default How about Coloring?

After you lighten up (S-curve is preferable over Level):

- Copy to a new layer (this is where you'll change its blending later)
- Increase the saturation (more color has better effect)
- Do a Filter > Noise > Median (increase the pixels radius)
- Do a Filter > Blur > Gaussian blur (again increase the radius)
- Finally on this new layer change the blending from Nomal to Color

This trick seems to work for me since the details is still held in the background layer, the new 'Color' layer kind of mask out the underlying noise and the result is quite acceptable. (Try to repeat the process with different radius increments to vary their effects)
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Old Jan 2, 2003, 9:01 PM   #3
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Fred Miranda has an action that will remove noise as well


www.fredmiranda.com


good luck


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Old Sep 30, 2004, 5:23 PM   #4
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Default

The bestmethodto remove noise for me is the following:

- Change to Lab mode

- Apply Guassian Bluron Channel A and Channel B (Same amount for both), untilgrains disappear.

- Change back to RGB mode.

Try it and let me know if you like it. It gives very good results but leaves grains instead of noise.

Anyway, I've tried different methods using the RGB channels, but none come close to the above method.


P.S: I just noticed that thisthread is 2 years old :?. I'm a little bit behind:?




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