--- PerceptualDiff-1.1.1/Metric.cpp.orig	2009-05-23 00:27:14 +0300
+++ PerceptualDiff-1.1.1/Metric.cpp	2009-06-22 10:03:24 +0300
@@ -19,6 +19,7 @@
 #include "RGBAImage.h"
 #include "LPyramid.h"
 #include <math.h>
+#include <cstdio>
 
 #ifndef M_PI
 #define M_PI 3.14159265f