title: What is the C++ replacement to the old cvSmooth(src, dst, CV_MEDIAN, 3)?
body: <p>I am converting old OpenCV code over to the new C++ api, and I am not sure how this gets translated.  </p>
  
  <p>I have a line executing what's in the title, <code>cvSmooth(src, dst, CV_MEDIAN, 3);</code> and I'm not sure what the "proper" analogue is in the new C++ api. </p>
  
  <p>What would it be?</p>