Image Averaging to Reduce Noise

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JayF
Posts: 13
Joined: April 26th, 2009, 8:54 am

Image Averaging to Reduce Noise

Post by JayF »

Hello:

I would like to use "Stack Images" in PWPro 4.0 to reduce noise. Am I correct in assuming that I would just load the 4 images into the "Stack Images" dialogue and leave the "Amount" sliders set to 100%?

Cheers! Jay
jsachs
Posts: 4203
Joined: January 22nd, 2009, 11:03 pm

Re: Image Averaging to Reduce Noise

Post by jsachs »

Yes
Jonathan Sachs
Digital Light & Color
JayF
Posts: 13
Joined: April 26th, 2009, 8:54 am

Re: Image Averaging to Reduce Noise

Post by JayF »

Thanks Jonathan

Cheers! Jay
willynhs
Posts: 2
Joined: April 24th, 2009, 4:37 pm
What is the make/model of your primary camera?: Nikon D300
Location: Nijmegen, The Netherlands

Re: Image Averaging to Reduce Noise

Post by willynhs »

Hello JayF,

Take a look at http://www.cambridgeincolour.com/tutorials.htm.
It has a great tutorial about noise reduction by image averaging and it has a lot of other tutorials and techniques.
He uses photoshop but it's easy to use with PWP.

Willy Nijenhuis
JayF
Posts: 13
Joined: April 26th, 2009, 8:54 am

Re: Image Averaging to Reduce Noise

Post by JayF »

Hello Willy Nijenhuis:

Thanks. In fact, it was the "Cambridge In Colour" tutorial that generated my question about image averaging with the stack images transform. I just happened to be in the midst of some night photography and was looking for some noise reduction techniques.

It seems to work quite well.

Cheers! Jay
bobsofpa
Posts: 37
Joined: April 25th, 2009, 9:03 am
Location: Reading, PA
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Re: Image Averaging to Reduce Noise

Post by bobsofpa »

Yes, averaging to reduce noise does work but it has the same iimitation as HDR. There must be zero movement during the time the shots are taken. Even a gentle breeze will move leaves, tree limbs, etc that will lead to a soft photograph.
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