title: Face Rotation direction detection using c# and emgucv
body: <p>I am new to Emgucv and I am working on face movement direction detection 
  I had come across many codes in Internet but they are very difficult to understand.</p>
  
  <p>So can you please provide a easy  and understandable code or links for learning this situation.</p>
  
  <p>Thanks in advance</p>