Method and system for volume control by hand gesture

A system for volume control by hand gesture, comprising a gain control module, an interface acquisition module, a displacement judgment module, and an interface control module;

• wherein the interface control module is used for entering music playing interface, popping up volume control interface after the hand gesture operation is sensed and controlling the display status of volume control interface;
• the interface acquisition module is used for acquiring the area information of the current interface, judging whether entry into music playing interface, and respectively controlling the music volume and system volume after entry into the music playing interface;
• or reversely controlling the volume controlled after exiting from the volume control interface;
• the displacement judgment module is used for acquiring the displacement of volume control by hand gesture to judge its direction;
• and the gain control module is used for increasing or decreasing the volume according to the direction of volume control by hand gesture.