ER WA - Erode image to a "watershed"

PURPOSE

Erodes object in an input image until a "watershed skeleton" is arrived at. Uses 8-fold connectivity inside a box neighborhood.

SEE ALSO

ER SK

[Erode a binary image to make skeleton]

USAGE

.OPERATION: ER WA

.INPUT FILE: IMG001
[Enter the name of the input file.]

.OUTPUT FILE: IMG002
[Enter name for output file.]

NOTES

1. Skeleton areas are set to value of one.

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

3. Works "slice-by-slice" on volumes.

SUBROUTINES

WATERSHD

CALLER

UTIL3