[Insight-developers] TIFF Spacing Units

[Luis Ibanez]

Karthik,

When applying the fix from:

http://www.itk.org/Bug/bug_relationship_graph.php?bug_id=11455&graph=dependency

in the Gerrit patch
http://review.source.kitware.com/#change,2431

Brad pointed out correctly that ITK itself doesn't have a
notion of specific units.

The code here "assumes" that ITK units are millimeters.

It actually exposes a deficiency in the metadata of
the ITK image.

Note that one option is to tell TIFF that the Units
are Unknown...

http://www.awaresystems.be/imaging/tiff/tifftags/resolutionunit.html

but then TIFF assumes the X and Y spacing to be the same...


Any suggestions ?


     Thanks


         Luis