It is really amazing that a machine can determine the gesture of our hands. There are many applications based on gesture detection like you can make a remote control which works when a particular gesture was detected,you can have a gesture controlled game etc. Hand gesture detection can be done in many ways. we can use CNN to train models and use them for gesture detection.We will be using OpenCV and Convexity defects for detecting hand gestures. Gestures such as best of luck,thumbs down,1,2,3,4,5 etc