From 94c8e59bbe500fd555b5ad26572fd5f13c85ae06 Mon Sep 17 00:00:00 2001
From: vasiliev-vb <vasilievvladimir89@gmail.com>
Date: Tue, 13 Mar 2018 15:09:36 +0000
Subject: [PATCH] Fixed bug in KAZE features orientation.

Bug was added in f6ceeaa commit, different angle computation functions have different parameter order.
---
 modules/features2d/src/kaze/KAZEFeatures.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/modules/features2d/src/kaze/KAZEFeatures.cpp b/modules/features2d/src/kaze/KAZEFeatures.cpp
index 6e7024c78c..ab5a2c6afb 100644
--- a/modules/features2d/src/kaze/KAZEFeatures.cpp
+++ b/modules/features2d/src/kaze/KAZEFeatures.cpp
@@ -606,7 +606,7 @@ void KAZEFeatures::Compute_Main_Orientation(KeyPoint &kpt, const std::vector<TEv
                     resY[idx] = 0.0;
                 }
 
-                Ang[idx] = fastAtan2(resX[idx], resY[idx]) * (float)(CV_PI / 180.0f);
+                Ang[idx] = fastAtan2(resY[idx], resX[idx]) * (float)(CV_PI / 180.0f);
                 ++idx;
             }
         }
@@ -638,7 +638,7 @@ void KAZEFeatures::Compute_Main_Orientation(KeyPoint &kpt, const std::vector<TEv
         if (sumX*sumX + sumY*sumY > max) {
             // store largest orientation
             max = sumX*sumX + sumY*sumY;
-            kpt.angle = fastAtan2(sumX, sumY);
+            kpt.angle = fastAtan2(sumY, sumX);
         }
     }
 }