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Abstract
Face Recognition has been a keen topic of Artificial Intelligence. Face Recognition works similar to our brain, how could you recognize a mango, apple or a human face within seconds. Whenever we met a new person, brain doesn’t recognize his/her face at that time because your brain database is not updated with that face. Now, when the person starts talking with you, your brain will start extracting the unique features like size of nose, eyes etc. When we discuss about facial recognition or expression recognition, we always surprised that how a machine can predict the faces of human being or know their current emotion without knowing the internal implementation. There are certain algorithms available which do the same thing for us.