[Insight-users] direction cosine manipulation

Vincent A. Magnotta vincent-magnotta at uiowa.edu
Fri Apr 11 11:10:22 EDT 2008


Richard,

You probably want to use the an itk::OrientedImage versus itk::Image.
This class will apply the directions cosines when converting between
voxel coordinates and physical space.

Vince


On Fri, 2008-04-11 at 15:45 +1000, Richard Beare wrote:
> Hi,
> 
> I'm looking at methods for inhomgeneity correction using a B1 image.
> My problem is ensuring correct positioning and alignment of the B1
> image and the image I want to correct as the fields of view and
> direction cosines are different.
> 
> Is there any method for orienting images based on direction cosines,
> or should I convert the cosines to a rotation based transform and deal
> with the differences that way? Note that I'm not concerned about the
> coarse orientation dealt with by the OrientationImageFilter.
> 
> Thanks.
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