From ce0b808e3c2f6753344939d94e8c256d99cd9b87 Mon Sep 17 00:00:00 2001
From: Elena Gvozdeva <elena.gvozdeva@itseez.com>
Date: Thu, 15 May 2014 13:05:27 +0400
Subject: [PATCH] IPP: fixed ipp_matchTemplate

---
 modules/imgproc/src/templmatch.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/modules/imgproc/src/templmatch.cpp b/modules/imgproc/src/templmatch.cpp
index 3565eee9a..511c8bd76 100644
--- a/modules/imgproc/src/templmatch.cpp
+++ b/modules/imgproc/src/templmatch.cpp
@@ -634,7 +634,9 @@ void cv::matchTemplate( InputArray _img, InputArray _templ, OutputArray _result,
 #endif
 
 #if defined HAVE_IPP
-    if (method == CV_TM_SQDIFF && cn == 1)
+    bool useIppMT = (templ.rows < img.rows/2 && templ.cols < img.cols/2);
+
+    if (method == CV_TM_SQDIFF && cn == 1 && useIppMT)
     {
         if (ipp_sqrDistance(img, templ, result))
             return;
@@ -643,7 +645,7 @@ void cv::matchTemplate( InputArray _img, InputArray _templ, OutputArray _result,
 #endif
 
 #if defined HAVE_IPP
-    if (cn == 1)
+    if (cn == 1 && useIppMT)
     {
         if (!ipp_crossCorr(img, templ, result))
         {