Median Filter


The Median Filter applies a rank filter which selects the 50th percentile ranked pixel from within the local neighborhood. This filter is used to remove high-frequency information and noise from an image, a process known as "smoothing". The median filter does not calculate a replacement value by combining neighborhood values but, rather, selects one of the neighborhood values to use as the replacement.

Properties of the Median Filter

Profile

Selects the parameter profile for this command.

[Select]

Selects the source images from an image window, folder, files, pattern, or a file list.

Width

Specifies the width of the median filter neighborhood in terms of pixels along the horizontal (row) direction.

Height

Specifies the height of the median filter neighborhood in terms of pixels along the vertical (column) direction.

Source Region

Specifies the rectangular region to be processed. The options are as follows:

Entire image: The entire image is processed.

Image Cursor: The region to be processed is selected using the Image Cursor .

Rectangle: The region specified by Min and Max limits for Column and Row coordinates is processed.

Column and Row, Min and Max: When Rectangle is selected, these values specify the column and row limits to be processed.

Related Topics

Spatial Filter Commands, Despeckling Filter, Rank Filter, Minimum Filter, Maximum Filter