diff --git a/Code/BasicFilters/otbSparseWvltToAngleMapperListFilter.h b/Code/BasicFilters/otbSparseWvltToAngleMapperListFilter.h
index 835a5dd59e6f58e2866d0ea9e91363b5d9d80758..30d4cf6d7aab2c0049d8c325d645659bcdcc9b18 100644
--- a/Code/BasicFilters/otbSparseWvltToAngleMapperListFilter.h
+++ b/Code/BasicFilters/otbSparseWvltToAngleMapperListFilter.h
@@ -46,6 +46,11 @@ namespace Functor {
         m_Lowerthreshold = value;
       }
 
+      TInput GetLowerThreshold() const
+      {
+        return m_Lowerthreshold;
+      }
+
       bool IsToGenerate ( const TInput & x1, const TInput & x2 ) const
       {
         if ( vcl_abs(x1) <= m_Lowerthreshold )