Studholme [35] and Maes[36] suggested
that some normalisation should be applied to mutual information as
was described above. Quite a few steps are involved in this normalisation
process and the full mathematical summary is left to the literature^{32}.

The main difference is that the expression used for MI is significantly extended and divided by a normalisation term. The method is predominant in non-rigid registration as it yields good results

2004-07-19