title: How do you draw on an image from vector<CvPoints> or vector<Point2f>?
body: <p>How do you draw on an image from vector or vector?</p>
  
  <p>I have VectorPoints <code>vector&lt;Point2f&gt;</code>. I just need to draw on an image from VectorPoints  using openCv.</p>
  
  <p>Any suggestions?</p>