MedianFltImg

DESCRIPTION

Computes the median filter of an image. A 3 x 3 neighborhood of points is sorted by value and the target point is replaced by the median value. Other rank based filters are MinFltImg, MaxFltImg, and RankFltImg. MedianFltImg is useful for removing impulse or shot noise. The median filter is discussed in:

Digital Image Processing, Gonzales, R.C., Wintz, P., Addison Wesley, Second Edition, 1987, pp 162--163.

INPUTS

Port: Img In
Type: Lattice
Constraints: 1..3-D
source image

WIDGETS

OUTPUTS

Port: Img Out
Type: Lattice
Constraints: 1..3-D
filtered image

KNOWN PROBLEMS

SEE ALSO

MinFltImg, MaxFltImg, RankFltImg.
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© The Numerical Algorithms Group Ltd, Oxford UK. 2000