random_warp

create a random warp (deformation) transform from a surface object

random_warp src.obj dest.xfm [domain_factor] [warp_distance] [seed]

DESCRIPTION

random_warp creates a random non-linear warp (deformation) transform from a surface object. The output dest.xfm is an XFM transformation file containing a random deformation field.

The optional domain_factor controls the spatial extent of the deformation. The optional warp_distance controls the magnitude of the displacements. The optional seed sets the random number generator seed for reproducible results.

This tool is useful for generating synthetic deformations for testing registration algorithms, creating simulated data, or performing perturbation analyses.

EXAMPLES

random_warp brain.obj random.xfm

random_warp brain.obj random.xfm 1.0 5.0 42

SEE ALSO

minctracc, transform_volume

AUTHOR

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

COPYRIGHTS

Copyright © 1996 by David MacDonald