filtered MSER keypoints that have centers out of image

modules/features2d/include/opencv2/features2d/features2d.hpp

@@ -114,7 +114,7 @@ CV_EXPORTS void read(const FileNode& node, CV_OUT vector<KeyPoint>& keypoints);
 /*
  * A class filters a vector of keypoints.
  * Because now it is difficult to provide a convenient interface for all usage scenarios of the keypoints filter class,
- * it has only 4 needed by now static methods.
+ * it has only several needed by now static methods.
  */
 class CV_EXPORTS KeyPointsFilter
 {
@@ -142,7 +142,7 @@ public:
     /*
      * Retain the specified number of the best keypoints (according to the response)
      */
-    static void retainBest(vector<KeyPoint>& keypoints, int npoints);
+    static void retainBest( vector<KeyPoint>& keypoints, int npoints );
 };
 
 

modules/features2d/src/mser.cpp

@@ -1288,15 +1288,17 @@ void MserFeatureDetector::detectImpl( const Mat& image, vector<KeyPoint>& keypoi
     (*this)(image, msers, mask);
     
     vector<vector<Point> >::const_iterator contour_it = msers.begin();
+    Rect r(0, 0, image.cols, image.rows);
     for( ; contour_it != msers.end(); ++contour_it )
     {
         // TODO check transformation from MSER region to KeyPoint
         RotatedRect rect = fitEllipse(Mat(*contour_it));
         float diam = sqrt(rect.size.height*rect.size.width);
         
-        if( diam > std::numeric_limits<float>::epsilon() )
+        if( diam > std::numeric_limits<float>::epsilon() && r.contains(rect.center) )
             keypoints.push_back( KeyPoint( rect.center, diam, rect.angle) );
     }
+
 }
     
 }