Inverse transform matrix to be consistent witk ITK (see longer comment in vvImageRead...

[clitk.git] / common / vvImage.txx

diff --git a/common/vvImage.txx b/common/vvImage.txx
index 90eeb02338e21408be4854687b1ab5969ef1febc..14da10a227f7d825cde021a143b8c2f84a74d7bb 100644 (file)
--- a/common/vvImage.txx
+++ b/common/vvImage.txx
@@ -47,6 +47,9 @@ void vvImage::AddItkImage(TItkImageType *input)
     (*matrix)[i][3] += input->GetOrigin()[i];
   }
 
+  // GetDirection provides the forward transform, vtkImageReslice wants the inverse
+  matrix->Invert();
+
   mTransform->SetMatrix(matrix);
 }
 //--------------------------------------------------------------------