Patent Document ID: 9373026
Application ID: 14134691
Patent Status: 1

Claim One:
1. A method of recognizing a hand gesture, the method comprising: acquiring, by a controller from an imaging device, a hand image, wherein a hand in the hand image is a recognition target by performing on and off control of a lighting device every predetermined frame unit with a predetermined rule; removing, by the controller, a static background image from the acquired hand image by subtracting the hand image acquired when the lighting device is in an off-state from the hand image acquired when the lighting device is in an on-state; removing, by the controller, a dynamic background image acquired when the lighting device is in the off-state from the hand image in which the static background image is removed; and recognizing, by the controller, a gesture of the hand by extracting a characteristic point from the hand image in which the dynamic background image is removed, wherein the static background image is static disturbance light of an external light source and the dynamic background image is dynamic disturbance light of an external light source.