``Level Slicing'' -- pull out a range of gray values

purpose:

This assigns all voxels with a gray value greater than or equal to ``Low gray value'' and less than or equal to ``High gray value'' to white and sets all other voxels to black.

input:

An 8-bit volume.

output:

A volume with only two possible gray values.

parameters:

Default parameters menu is

Low gray value = 96
* High gray value = 160
* Gray value for white = 1
* input from vol # = 0
* copy output to vol # = 0
*

comments:

 

1. In Expert mode the user can set the gray value for desired voxels to either '1' or '255'.