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Median Filter

Command

Image
Filters
Median Filter

Description

Applies a median filter to an image. The median filter is defined as the median of all pixels within a local region of an image.

The median filter is normally used to reduce salt and pepper noise in an image, somewhat like the mean filter. However, it often does a better job than the mean filter of preserving useful detail in the image.

Dialog box

Median Filter dialog box

Filter Size: larger filter yields stronger effect.

Click Preview to judge the results.

Click OK to proceed.

Examples

Before: After:
Median Filter
Median Filter
Median Filter

See also

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