Abstract: Humans communicate with one another not only through their vocal abilities but also through the gestures that they make. A gesture can go a great way in putting through our point and making the other person understand us and computers are no different in this and can be controlled and made to respond to hand gestures using a gesture recognition system. Today Human Computer Interaction is an interface with which we can virtually interact with the Systems with an ease Humans communicate mainly by vision and sound; therefore, a man machine interface would be more intuitive if it made greater use of vision and audio recognition. Another advantage is that the user not only can communicate from a distance, but need have no physical contact with the computer Gesture recognition can be seen as a way for computers to begin to understand human body language, thus building a richer bridge between machines and humans than primitive text user interfaces or even GUIs (graphical user interfaces), which still limit the majority of input to mouse. The results obtained convey us that there is a good alternative to mouse that is by using gesture.
Keywords: Human Computer Interaction, GUIs (graphical user interfaces), Hand Gesture Recognition System.