title: Creating your own contour in opencv using python
body: <p>I have a set of boundary points of an object.</p>
  <p>I want to draw it using opencv as contour.</p>
  <p>I have no idea that how to convert my points to contour representation.</p>
  <p>To the same contour representation which is obtained by following call</p>
  <pre><code>contours,_ = cv2.findContours(image,cv2.RETR_TREE,cv2.CHAIN_APPROX_SIMPLE)
  </code></pre>
  <p>Any ideas?</p>
  <p>Thanks</p>