From 582367441993fbd1cba684396344c5a8fcc6c015 Mon Sep 17 00:00:00 2001
From: Romulo Pinho <romulo.pinho@lyon.unicancer.fr>
Date: Thu, 31 Jan 2013 23:12:33 +0100
Subject: [PATCH] VectorArithm: make Norm(0) = 0

---
 tools/clitkVectorArithmGenericFilter.txx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/clitkVectorArithmGenericFilter.txx b/tools/clitkVectorArithmGenericFilter.txx
index 38c3b87..1f4cb72 100644
--- a/tools/clitkVectorArithmGenericFilter.txx
+++ b/tools/clitkVectorArithmGenericFilter.txx
@@ -431,7 +431,9 @@ void clitk::VectorArithmGenericFilter<args_info_type>::ComputeImage(Iter1 it, It
   case 12: // normalize
     while (!it.IsAtEnd()) {
       PixelType n = it.Get();
-      n.Normalize();
+      if (n.GetNorm() != 0)
+        n.Normalize();
+      
       ito.Set(n);
       ++it;
       ++ito;
-- 
2.47.1