From b45a870d9a3f856a4b0fe71caa903a6a4f5cda0d Mon Sep 17 00:00:00 2001
From: Andrey Kamaev <andrey.kamaev@itseez.com>
Date: Tue, 23 Oct 2012 12:07:32 +0400
Subject: [PATCH] Limit 32S data in perf test for addWeighted to avoid integer
 overflow

---
 modules/core/perf/perf_addWeighted.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/modules/core/perf/perf_addWeighted.cpp b/modules/core/perf/perf_addWeighted.cpp
index 742b684be..82ca45a02 100644
--- a/modules/core/perf/perf_addWeighted.cpp
+++ b/modules/core/perf/perf_addWeighted.cpp
@@ -23,6 +23,13 @@ PERF_TEST_P(Size_MatType, addWeighted, TYPICAL_MATS_ADWEIGHTED)
 
     declare.in(src1, src2, dst, WARMUP_RNG).out(dst);
 
+    if (CV_MAT_DEPTH(type) == CV_32S)
+    {
+        //see ticket 1529: absdiff can be without saturation on 32S
+        src1 /= 8;
+        src2 /= 8;
+    }
+
     TEST_CYCLE() cv::addWeighted( src1, alpha, src2, beta, gamma, dst, dst.type() );
 
     SANITY_CHECK(dst);