ER DOC - Erode binary image/volume - Save UEP in doc file.

PURPOSE

Erodes object in an input image/volume. Place location of any ultimate eroded pixels in doc. file.

SEE ALSO

EC CL	[Extract Connected Clusters]
DI	[Dilate a binary image/volume]
ER	[Erode a binary image/volume]
ER EDM	[Create Euclidean Distance Map]

USAGE

.OPERATION: ER DOC

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

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

.BOX OR CROSS NEIGHBORHOOD (B/C): C
[Shape of neighborhood. Box is a square/cube centered on each voxel, cross is a 2/3-dimensional cross centered on each voxel.]

.LENGTH OF NEIGHBORHOOD: 3
[Length of the neighborhood around a voxel. Must be an odd number.]

.ERODE IF NUMBER OF OCCUPIED NEIGHBORS IS < THAN: 26
[Voxel will be set to 0.0 (eroded) if it has fewer than this many occupied neighbors.]

.DOCUMENT FILE: UEP000
[Location of any isolated pixel which is eroded (ultimate eroded pixel) is placed in this doc. file.]

NOTES

1. Requires a input image/volume with voxels having values equal or greater than zero. Voxels with value greater than zero are considered to be occupied. Eroded areas are set to a value of zero.

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

SUBROUTINES

EROSION

CALLER

UTIL3