title: Python/OpenCV: Using cv2.resize() I get an error
body: <p>I'm using python 2.7 and opencv. </p>
  
  <p>I'm trying to use:</p>
  
  <pre><code>cv2.resize(src, dst, Size(), 0.5, 0.5, interpolation=cv2.INTER_LINEAR);
  </code></pre>
  
  <p>taken from <a href="http://docs.opencv.org/2.4/modules/imgproc/doc/geometric_transformations.html#resize" rel="nofollow">here</a>. But when I run this code I get <code>NameError: global name 'Size' is not defined.</code></p>
  
  <p>Can you help me please?</p>