how to remove lines in OpenCV : I want to remove lines and keypoints. I just want to remain a green rectangular.
Is there a function except for drawMatches or can I make lines and keypoints invisible in drawMatches?
    
    Mat img_matches;
    drawMatches( img_object, keypoints_object, img_scene, keypoints_scene,
               good_matches, img_matches, Scalar::all(-1), Scalar::all(-1),
               std::vector<char>(), DrawMatchesFlags::NOT_DRAW_SINGLE_POINTS );

[![A picture][1]][1]


  [1]: https://i.stack.imgur.com/srZni.jpg