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hi
I Check this code 
 
opencv32\opencv_contrib\modules\sfm\src\simple_pipeline.cpp
 
from: 

 opencv32\opencv_contrib\modules\sfm\src\simple_pipeline.cpp

and i found faster code.
->
libmv_reconstruction_.reconstruction.AllPoints()[i].X[j]
 

    libmv_reconstruction_.reconstruction.AllPoints()[i].X[j]

 should 
 
be: 

    libmv:: vector<euclideanpoint> vector<EuclideanPoint> Points = libmv_reconstruction_.reconstruction.AllPoints();
 and  change to Points [i].X[j]
 
 
[i].X[j]

-------------------------------------

    getPoints(OutputArray points3d) {
     const size_t n_points =
      libmv_reconstruction_.reconstruction.AllPoints().size();
 
    libmv_reconstruction_.reconstruction.AllPoints().size();

        points3d.create(n_points, 1, CV_64F);

 Vec3d point3d;
 for ( size_t i = 0; i < n_points; ++i )
 {
   for ( int j = 0; j < 3; ++j )
     point3d[j] =
     =  libmv_reconstruction_.reconstruction.AllPoints()[i].X[j];
   Mat(point3d).copyTo(points3d.getMatRef(i));
 }
 
  }
 

      }

-------------------------------------
getPoints(OutputArray points3d) {
     libmv:: vector<euclideanpoint> vector<EuclideanPoint> points = libmv_reconstruction_.reconstruction.AllPoints();
     const size_t n_points = points.size();
    points3d.create(n_points, 1, CV_64F);
 
CV_64F);

    Vec3d point3d;
 for ( size_t i = 0; i < n_points; ++i )
 {
   for ( int j = 0; j < 3; ++j )
     point3d[j] =
      = points[i].X[j];
   Mat(point3d).copyTo(points3d.getMatRef(i));
    }
  }
 
  }
 
thanks