[Insight-users] this->GetFixedImageRegion() ?

[motes motes]

I am trying to understand how the image iterator in
itkMeanSquaresImageToImageMetric.txx is used:


  typedef  itk::ImageRegionConstIteratorWithIndex<GradientImageType>
GradientIteratorType;
  FixedIteratorType ti( fixedImage, this->GetFixedImageRegion() );


But I cannot the find the definition/declaration of
GetFixedImageRegion() anywhere (I have tried grep'ing the whole ITK
library). The constructor is described here:

http://www.orfeo-toolbox.org/Doxygen/classitk_1_1ImageRegionConstIteratorWithIndex.html#33c62cea6e985f76b219ea97a594b2ca

but I still don't understand:

 this->GetFixedImageRegion()

any ideas?