[Insight-users] Masked UnaryFunctorImageFilter

[David Doria]

Instead of applying a Functor to EVERY pixel using UnaryFunctorImageFilter,
is there a way to pass it (or something else) a mask to tell it only to
apply the function on the masked pixels?

I often find myself doing:

  while(!imageIterator.IsAtEnd())
    {
    // If the pixel is not enabled in the mask, skip it
    if(imageIterator.Get() == 0)
      {
      output->SetPixel(imageIterator.GetIndex(), 0);
      continue;
      }

    PixelType value = MyFunctor(imageIterator.GetIndex());
   ....

    output->SetPixel(imageIterator.GetIndex(), value);
    ++imageIterator;
    }

Thanks,

David
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