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Revision Date: 16 May 2015

Noise Effects

This sub-menu contains effects that add or remove digital "noise".

Median is included in this sub-menu as it can be used to reduce noise at low settings.  At higher settings Median acts like a blur.

Noise Effects Noise Effects

The following original image will be used to demonstrate the effects:

Original Image Original Image

Add Noise

This adds random noise to the active layer or selection.

The effect must be run over areas containing color to produce noise.  Running the effect over transparent areas produces no noise in that region.

Example

 

Add Noise

Add Noise

Median

At low Radius settings this effect can be used to remove noise.  At higher Radius settings it creates a blurring effect.

Example

 

Median

Median

Reduce Noise

This effect is used to reduce digital noise in photographs.  This noise generally occurs when digital cameras cannot correctly capture fine details or are produced by the electronics in the camera itself.

In the example image there is little ambient noise.  The difference can be seen in the woodwork detail which looks cleaner after the effect has been run.

Example

 

Reduce Noise

Reduce Noise