CE MIN - Contrast Enhancement - Minimum

(6/19/01)

PURPOSE

Creates minimum image/volume. Useful for texture based segmentation and for "grey scale erosion". Also useful for making a background subtraction image.   Example.

SEE ALSO

CE RAN [Contrast Enhancement - Range]
CE MAX [Contrast Enhancement - Maximum]
CE VAR [Contrast Enhancement - Variance]

USAGE

.OPERATION: CE MIN

.INPUT FILE: VOL001
[Enter name of the input file.]

.OUTPUT FILE: VOL002
[Enter name for output file.]

.NEIGHBORHOOD X & Y: 3, 3
[Length of the neighborhood around a pixel. Must be an odd number.]

NOTES

  1. Image/volume is "circularly closed" so that pixels on boundaries have a neighbor on opposite boundary.

  2. Replaces pixel by minimum pixel value found in the local neighborhood. The neighborhood is rectilinear and all pixels are weighted evenly.

SUBROUTINES

FILTER

CALLER

UTIL2

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