antsMotionCorr iteration/smooth/shrink command line option names differ from antsRegistration

[gdevenyi]

antsMotionCorr accepts this as options

     -i, --iterations MxNx0...
          Specify the number of iterations at each level. 

     -s, --smoothingSigmas MxNx0...
          Specify the sigma for smoothing at each level. Smoothing may be specified in mm 
          units or voxels with "AxBxCmm" or "AxBxCvox". No units implies voxels. 

     -f, --shrinkFactors MxNx0...
          Specify the shrink factor for the virtual domain (typically the fixed image) at 
          each level. 

While antsRegistration uses this:

     -c, --convergence MxNxO
                       [MxNxO,<convergenceThreshold=1e-6>,<convergenceWindowSize=10>]
          Convergence is determined from the number of iterations per level and is 
          determined by fitting a line to the normalized energy profile of the last N 
          iterations (where N is specified by the window size) and determining the slope 
          which is then compared with the convergence threshold. 

     -s, --smoothing-sigmas MxNxO...
          Specify the sigma of gaussian smoothing at each level. Units are given in terms 
          of voxels ('vox') or physical spacing ('mm'). Example usage is '4x2x1mm' and 
          '4x2x1vox' where no units implies voxel spacing. 

     -f, --shrink-factors MxNxO...
          Specify the shrink factor for the virtual domain (typically the fixed image) at 
          each level. 

The naming here is inconsistent (making automatic generation of a command line a bit annoying), but also the convergence option doesn't support controlling threshold or window size.

[gdevenyi]

And a further followup, the convergence settings in antsMotionCorr are hard-coded as 1e-7,10 which is probably overkill, and would be nice better if it were settable in the convergence command line.