[Insight-developers] Questions about itk::ImageIOBase::IOPixelType and Reading/Writing

[kent williams]

I noticed this debugging a new itkNiftiImageIO test.

The test was failing with an exception, having to do with trying to convert
pixel types between a vector of 6 floats and a scalar float.

It turns out that the itkImageIOBase::m_PixelType was scalar, but I was
trying to read in an image with vector pixel types.

So is this the rule?

When you write a file itkImageFileWriter will set the PixelType for the
itkImageIO instance, but when you read the itkImageIO instance needs to set
the PixelType, and the itkImageFileReader then does whatever conversions it
can to return an image of the requested type.



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