fixed compile error on VS2008

15 years ago · f6c8e237f0
parent 5e84ab0222
commit f6c8e237f0
1 changed files with 1 additions and 1 deletions
--- a/modules/features2d/src/keypoint.cpp
+++ b/modules/features2d/src/keypoint.cpp
@ -143,7 +143,7 @@ float KeyPoint::overlap( const KeyPoint& kp1, const KeyPoint& kp2 )
        float triangleAreaB = b_2 * sinAlpha * cosAlpha;

        float intersectionArea = segmentAreaA + segmentAreaB - triangleAreaA - triangleAreaB;
-        float unionArea = (a_2 + b_2) * M_PI - intersectionArea;
+        float unionArea = (a_2 + b_2) * CV_PI - intersectionArea;

        ovrl = intersectionArea / unionArea;
    }