[Insight-users] Data type for registration

[mqutaish]

Hi , I'm new to ITK 
I have question regarding registration of different data tupe volumes. i
have a volume acquired using a microscope with an 8-bit tiff images , the
second one is an MRI volume which has a range of 0 - 25000 dcm images . for
registration I converted both to .mhd file format and I kept their native
data type . Now I'm trying to register the volumes using something similar
to what is in example deformableregistration15.cxx . which uses Mattes
mutual information as a metric . my question can I do something like this to
define in order to be used in deformableregistration15 :
 
///////////////////////////////////////////////////////////////////////
  const    unsigned int    ImageDimension = 3;
  typedef  signed short    PixelType1;
  typedef  unsigned char    PixelType2;
  
  typedef itk::Image< PixelType2, ImageDimension >  FixedImageType;
  typedef itk::Image< PixelType1, ImageDimension >  MovingImageType;
/////////////////////////////////////////////////////////////////////////

or should I make the type similar or normalize the images before
registration .

Thanks for help in advance ......



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