Online Help:

Usage: /vol/vssp/local/trees/amma-4/linux/bin/doVecImageUtil [options] 
   -optload () [] Load options from a file.  
   -optsave () [] Save options to a file.  
   -v () [(null)] input vec image 
   -lab () [(null)] input label image 
   -del () [] remove points from label image 
   -o () [(null)] output vec image 
   -dset () [(null)] output vpix dataset 
   -n (0) [0] only grab a few samples 
   -help (TRUE) [FALSE] Print usage information.