--- y4mdenoise/Region2D.hh.orig	Tue Jan 30 16:27:22 2007
+++ y4mdenoise/Region2D.hh	Tue Jan 30 16:27:36 2007
@@ -16,7 +16,7 @@
 
 #include "Status_t.h"
 #include <iostream>
-
+#include <cassert>
 
 
 // The 2-dimensional region class.  Parameterized by the numeric type
