[ITK-users] Fwd: MeanSquaresImageToImageMetricv4 with unsigned char PixelType results in error C2440

[Matt McCormick]

Hi Andrew,

This itk::ConceptCheck [1] says that the pixel values must be float to
be used in itk::MeanSquaresImageToImageMetricv4 -- use an
itk::CastImageFilter to change the pixel type.

HTH,
Matt

[1] https://itk.org/Wiki/ITK/Proposals:Concept_Checking

On Sun, Jul 24, 2016 at 8:26 AM, Andrew Harris <aharr8 at uwo.ca> wrote:
> Hello,
> I am attempting to build the example in section 3.6.4 of the 2nd volume
> Insight Toolkit user guide to read unsigned char data rather than float.  I
> have narrowed the error I’m getting down to the
> MeanSquaresImageToImageMetricv4, and the error I’m getting is:
>
> error C2440: ‘initializing’: cannot convert from
> ‘itk::Concept::Detail::UniqueType_bool<false>’ to
> ‘itk::Concept::Detail::UniqueType_bool<true>’
>
> I am using Visual Studio 2013 and ITK 4.10.0, any ideas on how to fix this
> would be helpful. I read the Microsoft Compiler Error documentation but
> didn’t really understand it.
>
> --
>
> AH
>
>
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