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[OM] Re: Noise Filtering

Subject: [OM] Re: Noise Filtering
From: Moose <olymoose@xxxxxxxxxxxx>
Date: Mon, 12 Apr 2004 21:56:35 -0700
agschnozz@xxxxxxxxx wrote:

>I've been "poor man filtering" with a cool function of my
>editor.  I create a duplicate layer and apply a selective
>gaussian blur to that layer.  Then I mix the two layers to
>balance the noise with detail.
>
I believe that's the technique used in F. Miranda's action. In my brief 
tests and the reviews I read, it is quite a bit less effective than the 
stand-alone programs.

>You can even delete from the blur layer to selectively bring details out.
>
Good idea, hadn't thought of that. I had wondered about differential 
effects for different areas with the stand-alone products. In the 1600 
iso E-1 sample I played with, the face and the other parts of the image 
really need different processing. One could do 2 filtered versions, load 
them as different layers and mix and match.

>Another "poor man" technique is to work on specific color
>channels.
>
The stand alone programs work separately with each channel.

>No single technique will work for all pictures.  Hammers are
>great for pounding nails, but make lousy screwdrivers.
>
Sure enough, I can see that already.

Thanks,
    Moose


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