By developing metrics on both Y and F(Y,M) useful tools for
handling textures are obtained. But it is noted that the metrics are
highly dependent on what 
that are choosen. On the other hand,
this makes the metrics a more flexible tool, adaptable to the specific
application.
One explanation for the extremely good performance of 
is that the underlying metric, 
, used for was highly
suitable for the kind of textures that the final tests were
calculated on.
With the granulation 
we are able to adjust what is to be considered as
similar and dissimilar by the metric.