CE RIDGE - Contrast Enhancement - Ridge Following

PURPOSE

Creates ridge image/volume. Useful for texture based segmentation.

SEE ALSO

ER SK

[Erode a binary image to make skeleton]

USAGE

.OPERATION: CE RIDGE

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

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

NOTES

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

2. The current pixel is set to the image mimimum whenever its value is less than all immediate neighbors or whenever the immediate neighbors have a maximum that is greater than the current pixels value. The neighborhood is 3x3.

SUBROUTINES

FILTER

CALLER

UTIL2