make_diff_volume

create a 4-class volume based on value ranges in two input volumes

make_diff_volume input1.mnc min1 max1 input2.mnc min2 max2 output.mnc

DESCRIPTION

make_diff_volume creates a 4-class output volume based on whether each voxel in two input volumes falls within specified value ranges. For each voxel position, the program tests whether the value in input1.mnc is within the range (min1, max1) and whether the value in input2.mnc is within the range (min2, max2). The four resulting classes correspond to the four possible combinations: both within range, only the first within range, only the second within range, or neither within range.

This is useful for comparing two volumes and identifying regions of agreement and disagreement, such as comparing two segmentations or classification results.

EXAMPLES

make_diff_volume seg1.mnc 0.5 3.5 seg2.mnc 0.5 3.5 diff.mnc

SEE ALSO

mask_volume, minccmp

AUTHOR

David MacDonald - McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University.

COPYRIGHTS

Copyright © 1996 by David MacDonald