MinFltImg

DESCRIPTION

Computes the minimum filter of an image. A 3 x 3 neighborhood of points is sorted by value and the target point is replaced by the minimum value. The result is similar to a morphological erosion operation. Other rank based filters are MedianFltImg, MaxFltImg, and RankFltImg. The minimum filter is similar to the median filter, 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

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