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.
The Median Filter command opens from the
Image Window > Process >
Filters menu and 
button
on the Main Toolbar. The "immediate"
form, shown first, opens when an image or image set is displayed in
the top-most window. The general form can be used to select source
images from folders, windows, or by matching templates.
Median Filter
|
Profile [|>] |
Selects the parameter profile for this command and allows you to save or work with existing presets. |
|
[Select] |
Opens the Select Source Images dialog to choose 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 andMax 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. |
Spatial Filter Commands, Despeckling Filter, Rank Filter, Minimum Filter, Maximum Filter