Median Filter

Median Filter

Median filtration reduces an image noise, by analyzing all pixels within the specified radius and giving the central pixel the averaged value of the reviewed pixel characteristics. As a result, the extremes of pixel colour and brightness are depressed and the image looks slightly blurred.
To perform median filtration
1. Select an image to process.
2. Click on the Filter toolbar or choose Median from the Filters menu The following dialog box is displayed:

3. Specify the Radius value from 1 to 5. This value determines in pixels the area within which the filter is to review colour values.
4. Choose Apply to run filtration.