title: MultiProcessing or Multithreading with python and Opencv to detect a face
body: <p>Recently i working on raspberry pi 3(OS raspbian) with OPENCV + PYTHON to detect face on live camera. And I see detected face on raspberry pi3 use opencv very slow, about 4 - 5 FPS/s. So I wonder can I use MultiThread or MultiProcessing to speed up the FPS and if yes, how can i do that?</p>
  
  <p>Please help me, any idea will appreciate. Thanks</p>