From 378af78e6af97a75bb1d1d49d448a2c6ecd36c45 Mon Sep 17 00:00:00 2001
From: Vadim Pisarevsky <no@email>
Date: Sun, 7 Nov 2010 13:58:15 +0000
Subject: [PATCH] made calcBackproject slightly more robust.

---
 modules/imgproc/src/histogram.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/imgproc/src/histogram.cpp b/modules/imgproc/src/histogram.cpp
index 975af78f85..3da9d7cb48 100644
--- a/modules/imgproc/src/histogram.cpp
+++ b/modules/imgproc/src/histogram.cpp
@@ -903,7 +903,7 @@ calcBackProj_( vector<uchar*>& _ptrs, const vector<int>& _deltas,
                     for( i = 0; i < dims; i++ )
                     {
                         int idx = cvFloor(*ptrs[i]*uniranges[i*2] + uniranges[i*2+1]);
-                        if( (unsigned)idx >= (unsigned)size[i] )
+                        if( (unsigned)idx >= (unsigned)size[i] || (_ranges && *ptrs[i] >= _ranges[i][1]))
                             break;
                         ptrs[i] += deltas[i*2];
                         Hptr += idx*hstep[i];