title: How to know what Tensorflow actually "see"?
body: <p>I'm using cnn built by keras(tensorflow) to do visual recognition.
  I wonder if there is a way to know what my own tensorflow model "see".
  Google had a news showing the cat face in the AI brain.</p>
  
  <p><a href="https://www.smithsonianmag.com/innovation/one-step-closer-to-a-brain-79159265/" rel="nofollow noreferrer">https://www.smithsonianmag.com/innovation/one-step-closer-to-a-brain-79159265/</a></p>
  
  <p>Can anybody tell me how to take out the image in my own cnn networks.
  For example, what my own cnn model recognize a car?</p>