title: How to find orientation of an image in scene with Flann Feature Matching in OpenCV
body: <p>So, I was able to get matches in feature points in two images, one query image and other scene image like:</p>
  
  <pre><code>flann = cv2.FlannBasedMatcher(index_params,search_params)
  matches = flann.match(des1,des2)
  </code></pre>
  
  <p>Now, when I have the matched, how do I know how the query image is oriented in the scene image. Can I know the angle or the scale based on these matches?</p>
  
  <p>I see the <code>distance</code> property on the match - but I don't understand how we can use that to find orientation.</p>