[daip] mwflt

[Eric Greisen]

Crystal Brogan writes:
 > I'm using opcode 'mw' in order to filter with a box.
 > 
 > cparms 1 and 2 define the size of the box in pixels.
 > 
 > Question: are these the actual width/height of the box OR
 > are they 1/2 of the width/height that I want?
 > 
 > In other words if I want to filter things above 2 degrees in
 > size, would I specify 1 degree or 2 degrees (in pixel units)?
 > 
 > I realize this is a rather obscure task, but does any one know?

It is also a difficult task since median-window filtering is a tricky
business to make computationally fast.  Looking at the code, it uses
the box size CPARM(1) and (2) and half that all over.  Therefore, I
would assume the the CPARMs are the full box size not 1/2.

Eric