[Insight-users] NaryFunctorImageFilter Bug?

[Sah Rayman]

Lius,

In fact, I need something with 4 inputs. My personal
feeling is that iterator is much more easier to use in
this case. 

Thanks for the help again.

Sah

--- Luis Ibanez <luis.ibanez at kitware.com> wrote:
> 
> Hi Sah,
> 
> 
> Thanks for pointing this out.
> 
> This is actually a bug / design overlook.
> 
> The simple solution in your case is to use
> the
> 
> 
>       itkTernaryFunctorImageFilter
> 
> 
> which actually invokes the Functor with
> three arguments.
> 
> 
> As far as the itkNaryFunctorImageFitler is
> concerned we should probably make the signature
> of the functor to expect a FixedArray<> or an
> Array<> as input so we can pass arbitrary numbers
> of parameters to the functor.
> 
> This issue has been entered in the Bug database
> as Bug #628.
> 
>
http://www.itk.org/Bug/bug.php?op=show&bugid=628&pos=14
> 
> 
> 
> Please let us know if you have further questions.
> 
> 
> Thanks
> 
> 
>     Luis
> 
> 
> 
> ----------------------
> Sah Rayman wrote:
> 
> > Seems I have trouble make NaryFunctorImageFilter
> > working on 3 or more inputs.
> > 
> > ------------- Here are the code ---------------
> > 
> >     typedef int PixelType;
> >     typedef itk::Image< PixelType, 3> ImageType;
> > 
> >     class TestFunctor3 {
> >     public:
> >         inline PixelType operator() (const
> PixelType
> > &in1, 
> >             const PixelType &in2,
> >             const PixelType &in3) {
> >                 
> >                 return 1;
> >             }
> > 
> >     };
> > 
> >     class TestFunctor2 {
> >     public:
> >         inline PixelType operator() (const
> PixelType
> > &in1, 
> >             const PixelType &in2) {
> >                 
> >                 return 1;
> >             }
> > 
> >     };
> > 
> > 
> >     typedef itk::NaryFunctorImageFilter<
> ImageType,
> > ImageType, TestFunctor2> 
> >         TestFilterType;
> > 
> >     TestFilterType::Pointer myFilter;
> > ------------- End of the code ---------------
> > 
> > Above code compiles fine. 
> > But if we replace 
> > typedef itk::NaryFunctorImageFilter< ImageType,
> > ImageType, TestFunctor2> 
> >         TestFilterType;
> > with 
> > typedef itk::NaryFunctorImageFilter< ImageType,
> > ImageType, TestFunctor3> 
> >         TestFilterType;
> > 
> > the compiler will complain:
> >
>
InsightToolkit-1.6.0\Code\BasicFilters\itkNaryFunctorImageFilter.txx(81)
> > : error C2064: term does not evaluate to a
> function
> > taking 2 arguments
> > 
> > Can someone confirm this is a bug or let me know
> if I
> > did something incorrect?
> > 
> > Thanks!
> > 
> > 
> > 
> > 
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> > 
> 
> 
> 


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