[Insight-developers] Unclear doc

[Luis Ibanez]

Hi Mark,

Thanks for pointing this out.

It is a doxygen problem. The actual equation in the header file
is

f(x) = (Max-Min) \cdot \frac{1}
        {\left(1+e^{-(\frac{ x - \beta }{\alpha}\right)} + Min


It may be related with the behavior that Josh mention.
probably some confusion of files from the doxygen->latex
processing...

The spurious equation appearing in the second half is comming
from some other filter...


Could you please log a bg in GNATs ?
you can assign it to me,

I'll look at that after the CDs for SPIE are done...



Thanks


   Luis


-------------------------


Mark Foskey wrote:

> The doxygen doc for SigmoidImageFilter
> 
> http://www.itk.org/Doxygen/html/classitk_1_1SigmoidImageFilter.html#_details 
> 
> 
> seems unclear to me.  It statest that f(x) = (Max - Min), which looks to 
> be a constant function.  The formula for $S$ is confusing too, since I'm 
> not sure what it meant by $A \cap B$, and I'm not sure what role S plays.
>