title: What does cv2.cv.BoxPoints(rect) return?
body: <pre><code>rect = cv2.minAreaRect(largest_contour)
  rect = ((rect[0][0] * self.scale_down, rect[0][1] * self.scale_down), (rect[1][0] * self.scale_down, rect[1][1] * self.scale_down), rect[2])
  box = cv2.cv.BoxPoints(rect)
  print box 
  box = np.int0(box)
  cv2.drawContours(frame,[box], 0, (0, 0, 255), 2)
  </code></pre>
  
  <p>This is how my code looks like. I tried to print the box to see what's that and I got some printing result such as <code>((200.0, 472.0), (200.0, 228.0), (420.0, 228.0), (420.0, 472.0))</code>. It should have something to do x and y coordinates right? I guess that's the four corners of the rectangle? So what are they exactly? Thanks! </p>