From afc0cf8c4ed6b34a05b5c88e2809a655dd773456 Mon Sep 17 00:00:00 2001
From: "marina.kolpakova" <marina.kolpakova@itseez.com>
Date: Wed, 25 Jul 2012 12:19:08 +0400
Subject: [PATCH] fixed surf for upright case

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

diff --git a/modules/nonfree/src/surf.cpp b/modules/nonfree/src/surf.cpp
index e6987b36f6..fa327855dd 100644
--- a/modules/nonfree/src/surf.cpp
+++ b/modules/nonfree/src/surf.cpp
@@ -615,7 +615,7 @@ struct SURFInvoker
                 continue;
             }
 
-            float descriptor_dir = 90.f;
+            float descriptor_dir = 360.f - 90.f;
             if (upright == 0)
             {
                 resizeHaarPattern( dx_s, dx_t, NX, 4, grad_wav_size, sum->cols );