# Arithmetic Mean Filter

## Command

Image

Filters

Arithmetic Mean Filter

## Description

Applies a arithmetic mean filter to an image.

An arithmetic mean filter operation on an image removes short tailed noise such as uniform and Gaussian type noise from the image at the cost of blurring the image. The arithmetic mean filter is defined as the average of all pixels within a local region of an image.

The arithmetic mean is defined as:

Pixels that are included in the averaging operation are specified by a mask. The larger the filtering mask becomes the more predominant the blurring becomes and less high spatial frequency detail that remains in the image.

## Dialog box

**Filter Size**: size of the filter mask; a larger filter yields stronger effect.

Click Preview to judge the results.

Click OK to proceed.

## Examples

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