fixed angles of SURF detector

9cd0c903 · Maria Dimashova · 565a8dc3 · 9cd0c903
Commit 9cd0c903 authored Jul 02, 2012 by Maria Dimashova
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surf.cpp modules/nonfree/src/surf.cpp +1 -1

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--- a/modules/nonfree/src/surf.cpp
+++ b/modules/nonfree/src/surf.cpp
@@ -667,7 +667,7 @@ struct SURFInvoker
                        besty = sumy;
                    }
                }
-                descriptor_dir = fastAtan2( besty, bestx );
+                descriptor_dir = fastAtan2( -besty, bestx );
            }
            kp.angle = descriptor_dir;
            if( !descriptors || !descriptors->data )