Laser Beam Based Gesture Control Interface for Mobile Devices

A mobile device comprising:

• a camera;
• a memory element storing a gesture matching table, wherein gestures comprise user body movements, and wherein the matching table contains associations of gestures and computer operations;
• and
• a processor configured to:
• identify a two dimensional laser beam aspect in two or more images captured by the camera;
• observe a motion trajectory for the aspect between the two or more images;
• correlate the motion trajectory with a gesture;
• identify a computer operation associated with the gesture in the matching table;
• and
• send a signal to execute the computer operation associated with the gesture.

A system for interfacing with a monitoring device, comprising:

• a projection surface;
• a projector configured to project an image on the projection surface;
• a handheld laser beam source configured to project a two dimensional aspect of a laser beam on the projection surface;
• and
• a monitoring device comprising:
• a sensing device configured to detect the aspect on a projection surface;
• a camera configured to capture a first and second video frame, wherein each video frame comprises at least one foreground image and a laser beam aspect;
• a memory;
• and
• a processor configured to:
• determine a motion trajectory for the aspect, wherein the motion trajectory corresponds to a gesture comprising an operator body movement, and wherein the motion trajectory is determined by comparing the position of the aspect at a first point in the first video frame to the position of the aspect at a second point in the second video frame;
• match the motion trajectory to a computer operation;
• and
• execute the computer operation.