FIX: check for zero pixels (Coverity defect)


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@4937 42a5c34f-2066-0410-bec5-ba365beb4995
FIX: corrected handling of template vs. first image data for normalization (Coverity defect)


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@4938 42a5c34f-2066-0410-bec5-ba365beb4995
FIX: catch exception


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@4939 42a5c34f-2066-0410-bec5-ba365beb4995
FIX: properly handle failed xform import


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@4940 42a5c34f-2066-0410-bec5-ba365beb4995