title: Load uploaded image without saving to HDD with python and OpenCV
body: <p>I'm getting uploaded files in my Flask framework app. This file is image which I want to process by OpenCV (in python). Saving this uploaded file to HDD first, will slow down whole operation (additional time of saving and loading image with OpenCV). </p>
  
  <p>Is it possible to load image directly from Werkzeug FileStorage object (memory)?</p>