Gesture Based Interaction NUI: An Overview
  Touch,face,voice recognition and movement sensors all are part of an emerging field of computing often called natural user interface, or NUI. Interacting with technology in these humanistic ways is no longer limited to high tech secret agents. Gesture Touch, face, voice recognition and movement sensors all are part of an emerging field of computing often called natural user interface, or NUI. Interacting with technology in these humanistic ways is no longer limited to high tech secret agents. Gesture recognition is the process by which gestures formed by a user are made known to the system. In completely immersive VR environments, the keyboard is generally not included, Technology incorporates face, voice, gesture, and object recognition to give users a variety of ways to interact with the console, all without needing a controller. This paper focuses on the emerging way of human computer interaction, Gesture recognition concept and gesture types. 
Dr Manju Kaushik and Rashmi Jain
cs.HC