Online Help:

Usage: /vol/vssp/local/trees/amma-4/linux/bin/exLMSOptic [options] 
   -optload () [] Load options from a file.  
   -optsave () [] Save options to a file.  
   arg () [(null)] Input image 1 
   arg () [(null)] Input image 2 
   -o (motion) [motion] Output file name prefix 
   -w (9) [9] Window size 
   -g (5) [5] Set Gaussian antialias filter order (default is Remex 2:1 antialias) 
   -d (1) [1] Spatial gradient difference order 
   -n (1) [1] Noise s.d. estimate for filtered image 
   -s (1) [1] Scale factor for arrow on Postscript plot 
   -S (5) [5] Vector subsample factor 
   -F (FALSE) [FALSE] Forward diff instead of average diff for spatial gradient
   -ne (FALSE) [FALSE] Minimal erosion of motion field
   -help (TRUE) [FALSE] Print usage information. 

Dependancies:
   2 args are compulsory.