US Patent 9207771 Gesture based user interface

A system and method for recognition of hand gesture in computing devices. The system recognizes a hand of a user by identifying a predefined first gesture and further collects visual information related to the hand identified on the basis of the first predefined gesture. The visual information is used to extract a second gesture (and all other gestures after the second) from the video/image captured by the camera and finally interpreting the second gesture as a user input to the computing device. The system enables gesture recognition in various light conditions and can be operated by various user hands including the ones wearing gloves.