title: what's the intuition of opencv Top Hat and Black Hat
body: <p>I recently started study opencv. I only have a bachelor's degree on engineering. I am having a hard time of understanding these 2 morphological transformation: Black Hat, Top Hat. the official documents is <a href="https://docs.opencv.org/master/d9/d61/tutorial_py_morphological_ops.html" rel="nofollow noreferrer">here</a> </p>
  
  <p>Can some one give some advice of what is the intuition of these operation and what is it for?</p>