: How to remove noise/grain on a picture, based on some "noise pattern" I have a picture containing lot of noise (see example below). Using photoshop CS5, is there any way to remove/or minimize

@Frith110

you can gaussian blur the image, though it doesnt remove grains , it will look like a less grained one.

Vote Up Vote Down

@Caterina889

You can also try

Filter > Noise > Median

Vote Up Vote Down

@Nickens508

www.photoshopessentials.com/photo-editing/reduce-noise/
This is a helpful link that I found this morning.

Vote Up Vote Down

@Turnbaugh909

Would this be better?



What I did, was actually adding a Curves adjustment layer and then edited curve for each individual colour channel.

This could also be a starting point to add other obivous elements to the image itself, to correct it as much as possible (like those different tint bars at top)...



Outcome

So if you're after one step process, then I suggest Curves adjustment layer that reduces much of the noise in your image. but you have to be aware that it cancels all that noise basically because background is significantly darker (noise too) than content. InDesign's icon falls into the same hue range, that's why it's cancelled out along with noise.

Vote Up Vote Down

@Turnbaugh909

create clipping mask (channel Mixer)

output channel red, red=-200% other all 0,,,,
output channel green, green=-200% other all 0,,,,
output channel blue, blue=-200% other all 0,,,,

then give channel mixer clipping to Overlay and Opacity 71%

Vote Up Vote Down

@Hamm6457569

There's no functional equivalent to audio noise sampling/reduction in Photoshop. The best approach to this kind of problem is not to use Photoshop itself, but Camera Raw.

Select the image in Bridge and use the keyboard shortcut Cmd/Ctl-R to open the jpeg in Camera Raw. Now you have a wealth of noise reduction (including color noise) tools available to you. You're not going to get a silk purse out of a sow's ear, but you'll be able to get rid of a great deal of the noise, including the color noise, and bring a much-cleaned-up image into Photoshop for more work. CS6 has even better Camera Raw noise reduction, so you might want to download the public beta and give that a whirl.

Once in Photoshop, you may find that a HIRALOAM (HIgh RAdius, LOw AMount -- a term coined, as far as I know, by Dan Margulis, and discussed extensively in his book "Professional Photoshop") sharpen will help punch up the text. It is the best technique to use when sharpening images with high amounts of noise. Dan also wrote the book, literally, on the Lab color space. Both books highly recommended.

Vote Up Vote Down

@Turnbaugh909

Garbage in, garbage out.

There's no technique I'm aware of to remove that much noise. And especially no technique which is automated.

Your'e best bet would be to convert the image to L*A*B mode and work on the channels to remove noise. Overall though, that's a HUGE mountain to climb based on your posted sample.

If it were me, I'd reshoot with better lighting and a better camera.

Vote Up Vote Down