Apply log before casting back to pixel type

diff --git a/tools/clitkImageArithmGenericFilter.txx b/tools/clitkImageArithmGenericFilter.txx
index f3040750d6f8cb61b81ffb9052f511ad579cd761..37fa000d3c3e402a1dac421696e070ed8f4f4e90 100644 (file)
--- a/tools/clitkImageArithmGenericFilter.txx
+++ b/tools/clitkImageArithmGenericFilter.txx
@@ -397,7 +397,7 @@ void clitk::ImageArithmGenericFilter<args_info_type>::ComputeImage(Iter1 it, Ite
         ito.Set(-log(0.5 / mScalar) );
       }
       else {
-        ito.Set(-log(PixelTypeDownCast<double, PixelType>((double)it.Get() / mScalar)) );
+        ito.Set(PixelTypeDownCast<double, PixelType>(-log((double)it.Get() / mScalar)) );
       }
       ++it;
       ++ito;