Merge pull request opencv#845 from githubuser0xFFFF:master

Author: vpisarev

modules/videostab/include/opencv2/videostab/stabilizer.hpp

@@ -144,7 +144,7 @@ class CV_EXPORTS OnePassStabilizer : public StabilizerBase, public IFrameSource
     virtual void reset();
     virtual Mat nextFrame() { return nextStabilizedFrame(); }
 
-private:
+protected:
     virtual void setUp(const Mat &firstFrame);
     virtual Mat estimateMotion();
     virtual Mat estimateStabilizationMotion();
@@ -170,7 +170,7 @@ class CV_EXPORTS TwoPassStabilizer : public StabilizerBase, public IFrameSource
     virtual void reset();
     virtual Mat nextFrame();
 
-private:
+protected:
     void runPrePassIfNecessary();
 
     virtual void setUp(const Mat &firstFrame);