Despeckle Pane

If an image has a lot of noise, you can use the despeckle option that has the following options:

Width

Adjust the slider to the desired amount. A preview area below displays the width of the speckle. The value for this option is set to 4 by default.

Height

Adjust the slider to the desired amount. The preview area displays the height of the speckle. The value for this option is set to 4 by default.