From b0aae19fb4cdf5a99762e7f52ca7f5b8cf2d525f Mon Sep 17 00:00:00 2001
From: Vadim Pisarevsky <no@email>
Date: Thu, 7 Jul 2011 22:52:54 +0000
Subject: [PATCH] probably fixed parallel face detector (i.e. built with TBB),
 ticket #1185. Thanks to mengw for the patch

---
 modules/objdetect/src/haar.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/objdetect/src/haar.cpp b/modules/objdetect/src/haar.cpp
index 001ed1e680..2984dd9913 100644
--- a/modules/objdetect/src/haar.cpp
+++ b/modules/objdetect/src/haar.cpp
@@ -850,6 +850,10 @@ struct HaarDetectObjects_ScaleImage_Invoker
         Size winSize0 = cascade->orig_window_size;
         Size winSize(cvRound(winSize0.width*factor), cvRound(winSize0.height*factor));
         int y1 = range.begin()*stripSize, y2 = min(range.end()*stripSize, sum1.rows - 1 - winSize0.height);
+        
+        if (y2 <= y1 || sum1.cols <= 1 + winSize0.width)
+            return;
+        
         Size ssz(sum1.cols - 1 - winSize0.width, y2 - y1);
         int x, y, ystep = factor > 2 ? 1 : 2;