From fcc481e751749c6840a5408d058b2ed6b645f6ab Mon Sep 17 00:00:00 2001
From: Adrian Clark <adrian.clark@hitlabnz.org>
Date: Mon, 1 Sep 2014 09:37:33 +1200
Subject: [PATCH] Fixed crash in SSE implementation of FREAK descriptor when
 number of pairs is set to something other than 512.

See http://code.opencv.org/issues/3889 for more details
---
 modules/features2d/src/freak.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/features2d/src/freak.cpp b/modules/features2d/src/freak.cpp
index 8cb1b4d..8bff9f5 100644
--- a/modules/features2d/src/freak.cpp
+++ b/modules/features2d/src/freak.cpp
@@ -394,7 +394,7 @@ void FREAK::computeImpl( const Mat& image, std::vector<KeyPoint>& keypoints, Mat
                 (*ptr) = result128;
                 ++ptr;
             }
-            ptr -= 8;
+            ptr -= (FREAK_NB_PAIRS/128)*2;
 #else
             // extracting descriptor preserving the order of SSE version
             int cnt = 0;
-- 
2.7.4