MEDFILT

Purpose:

Performs 2D median filtering on an image matrix.

MEDFILT(image, ksize)

image	-	Any image table or expression evaluating to a table.
ksize	-	Optional. An integer. Kernel size, must be odd. Defaults to 3.

An array the filtered image.

W1: density(ravel(readb("baboon.dat", ubyte), 128));gray

W2: medfilt(w1)

W1 reads and shapes a 128x256 raw binary image. W2 contains the 3x3 median filtered output.

W1: readimage(gethome + "data\mandrill.bmp")

W2: medfilt(w1, 5)

W1 reads a 250x240 bitmap image. The result is a 24 bit RGB image. W2 contains the 5x5 median filtered output.

For 24 bit RGB images, MEDFILT automatically performs filtering on each R, G, B component.

If the filter kernel is even, the size is incremented to make it odd.

See MEDFILT1 to perform median filtering on a series.