From 94a5bf88d0300f4fb940afe24c723bbd50681fe7 Mon Sep 17 00:00:00 2001
From: Maria Dimashova <no@email>
Date: Fri, 6 May 2011 12:15:14 +0000
Subject: [PATCH] fixed #1048

---
 modules/imgproc/src/grabcut.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/modules/imgproc/src/grabcut.cpp b/modules/imgproc/src/grabcut.cpp
index 2cf1e453b5..e16f9da84c 100644
--- a/modules/imgproc/src/grabcut.cpp
+++ b/modules/imgproc/src/grabcut.cpp
@@ -260,7 +260,11 @@ double calcBeta( const Mat& img )
             }
         }
     }
-    beta = 1.f / (2 * beta/(4*img.cols*img.rows - 3*img.cols - 3*img.rows + 2) );
+    if( beta <= std::numeric_limits<double>::epsilon() )
+        beta = 0;
+    else
+        beta = 1.f / (2 * beta/(4*img.cols*img.rows - 3*img.cols - 3*img.rows + 2) );
+
     return beta;
 }