``complement'' -- complement a volume

purpose:

All voxels greater than or equal to the threshold are set to 0. All others are set to 1. This is the gray-scale complement operation. For a binary-valued volume, if the threshold is set to 1, then all 1's are set to 0 and all 0's are set to 1.

input:

An 8-bit volume.

output:

The gray-scale complement of the input 8-bit volume.

parameters:

Default parameters menu is

threshold = 0
* input from vol # = 0
* copy output to vol # = 0
*

comments:

 

1. A very fast function.