fixed #832

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

@@ -1630,7 +1630,7 @@ protected:
      * Remove keypoints within borderPixels of an image edge.
      */
     static void removeBorderKeypoints( vector<KeyPoint>& keypoints,
-                                       Size imageSize, float borderSize );
+                                       Size imageSize, int borderSize );
 };
 
 /*

modules/features2d/src/descriptors.cpp

@@ -54,19 +54,15 @@ namespace cv
  */
 struct RoiPredicate
 {
-    RoiPredicate( float _minX, float _minY, float _maxX, float _maxY )
-        : minX(_minX), minY(_minY), maxX(_maxX), maxY(_maxY)
+    RoiPredicate( const Rect& _r ) : r(_r)
     {}
 
     bool operator()( const KeyPoint& keyPt ) const
     {
-        Point2f pt = keyPt.pt;
-        float eps = std::numeric_limits<float>::epsilon();
-        return (pt.x < minX + eps) || (pt.x >= maxX - eps) ||
-               (pt.y < minY + eps) || (pt.y >= maxY - eps);
+        return !r.contains( keyPt.pt );
     }
 
-    float minX, minY, maxX, maxY;
+    Rect r;
 };
 
 DescriptorExtractor::~DescriptorExtractor()
@@ -104,14 +100,13 @@ bool DescriptorExtractor::empty() const
 }
 
 void DescriptorExtractor::removeBorderKeypoints( vector<KeyPoint>& keypoints,
-                                                 Size imageSize, float borderSize )
+                                                 Size imageSize, int borderSize )
 {
     if( borderSize > 0)
     {
         keypoints.erase( remove_if(keypoints.begin(), keypoints.end(),
-                                   RoiPredicate(borderSize, borderSize,
-                                                (float)imageSize.width - borderSize,
-                                                (float)imageSize.height - borderSize)),
+                                   RoiPredicate(Rect(Point(borderSize, borderSize),
+                                                     Point(imageSize.width - borderSize, imageSize.height - borderSize)))),
                          keypoints.end() );
     }
 }