[ITK-users] exponential of values of a pointset

[Dženan Zukić]

Hi Ian,

there are many ways to do some custom processing for unary or binary per
pixel operations. This
<https://discourse.itk.org/t/thresholding-a-mask/1270/2> and this
<https://discourse.itk.org/t/thresholding-a-mask/1270/3> answer to a recent
question should help you.

Regards,
Dženan

On Tue, Sep 11, 2018 at 2:32 PM Ian Malone <i.malone at ucl.ac.uk> wrote:

> Hi, I'm writing a filter in ITK-5.0 and trying to get exponential values
> of pointset data, however I seem to be running into problems with the
> template for itkExpImageFilter not liking the fact the values are
> represented as itk::Vector<float, 1u>. Is there any way around this
> short of writing a filter for it?
>
> /tmp/myitk/ITK/Modules/Filtering/ImageIntensity/include/itkExpImageFilter.h:
>
> In instantiation of ‘TOutput itk::Functor::Exp<TInput,
> TOutput>::operator()(const TInput&) const [with TInput =
> itk::Vector<float, 1u>; TOutput = itk::Vector<float, 1u>]’:
>
>
> /tmp/myitk/ITK/Modules/Filtering/ImageIntensity/include/itkExpImageFilter.h:51:69:
>
> error: invalid static_cast from type ‘const itk::Vector<float, 1u>’ to
> type ‘double’
>       return static_cast<TOutput>( std::exp( static_cast<double>( A ) ) );
>
>
> Thanks,
>
> Ian
>
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