title: What is the best way(algorithim or function) of generating a decent disparity map in c++ or python for implementation on raspberry pi?
body: <p>I am trying to do some distance calculations using stereo videos in realtime but there is no proper documentation available for disparity mapping for opencv3 and many of the old commands from opencv2 are not working on the latest versions. Is there any other way (library or algorithm) to do disparity mapping in c++ or python.</p>
  
  <p>I am trying to implement my code on a raspberry pi and performance is an issue for me. I know that c++ is much faster and relatively less processor intensive so I might use that but any help would be appreciated in this regard.</p>