title: opencv facerecognition: subspaceproject and subspacereconstruct methods in python
body: <p>I have searched through the web, but haven't found any answer so far to the following question, therefore I want to ask here if someone could help me out with that: </p>
  
  <p>basically what i need is the same as in the solution from PraveenofPersia/Jesse there, but only the python implementation considering a Fisherface Recognizer:
  <a href="https://stackoverflow.com/questions/8757149/any-tips-on-confidence-score-for-face-verification-as-opposed-to-face-recogniti">Any tips on confidence score for face verification (as opposed to face recognition)?</a> </p>
  
  <p>up to now I am facing the problem, that cv2 does not offer either subspaceProject nor any other.</p>
  
  <p>has anyone suggestions here? </p>
  
  <p>thank you! </p>