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 | Read more about this program in the following publication:    |
 |  Scheres ea. (2007) Structure, 15, 1167-1177                  |
 |                                                               |
 |   *** Please cite it if this program is of use to you! ***    |
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--> Multi-reference refinement 
--> using a maximum-likelihood in Fourier-space (MLF) target 
--> with CTF correction 
  Input images            : input/mlData/phantom_images.xmd (104)
  Reference image(s)      : input/mlData/refs.xmd
  Output rootname         : tmpLink/xmipp_mlf_align2d/mlf2d
  Stopping criterium      : 5e-05
  initial sigma offset    : 3
  Psi sampling interval   : 5 degrees
  Translational searches  : 3 pixels
  Low resolution limit    : 999 Ang
  High resolution limit   : 0 Ang
  Check mirrors           : false
    + Assuming images have been phase flipped 
    + CTF group 1 contains 52 images
    + CTF group 2 contains 52 images
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--> Estimating initial noise models from average power spectra ...
  Multi-reference refinement:  iteration 1 of 2
  Multi-reference refinement:  iteration 2 of 2
--> Optimization was stopped before convergence was reached!