Add a built-in extended focus projection to Fiji

fiji
extended-focus

#1

Suggestion to add this extra method for projection of Z-stack directly shipped with Fiji. It is usually ignored by many users eventhough it can be very handy in some cases.
There are different implementations available, personnally I like the “Stack Focuser” from Michael Umorin as it requires only one parameter and offers good results.

Of course licencing issue have to be considered, whether a new implementation is preferable…
Additionnally since the Extended Focus Projection requires one or several parameters (like kernel for the edge detection) it might be necessary to generate an extra GUI window in addition to the Z-project one, which might be an issue if the macro is recorded…

Still I think there is room for improvement…
Maybe simply shipping a built-in method of extended focus projection in the Stack menu of Fiji, separately from the Z-project menu group ?