title: Open cv compare two face embeddings
body: <p>I went through <a href="https://www.pyimagesearch.com/2018/09/24/opencv-face-recognition/" rel="nofollow noreferrer">Pyimagesearch face Recognition tutorial</a>,
  but my application need to compare two faces only,
  I have embedding of two faces, how to compare them using opencv ?
  about the trained model which is use to extract embedding from face is mentioned in link,
  I want to know that what methods I should try to compare two face embedding.</p>
  
  <p>(Note: I am new to this field)</p>