Abstract: A method includes receiving and segmenting a first sequence of three-dimensional (3D) maps over time of at least a part of a body of a user of a computerized system in order to extract 3D coordinates of a first point and a second point of the user, the 3D maps indicating a motion of the second point with respect to a display coupled to the computerized system. A line segment that intersects the first point and the second point is calculated, and a target point is identified where the line segment intersects the display. An interactive item presented on the display in proximity to the target point is engaged.

Abstract: A method includes arranging, by a computer, multiple interactive objects as a hierarchical data structure, each node of the hierarchical data structure associated with a respective one of the multiple interactive objects, and presenting, on a display coupled to the computer, a first subset of the multiple interactive objects that are associated with one or more child nodes of one of the multiple interactive objects. A sequence of three-dimensional (3D) maps including at least part of a hand of a user positioned in proximity to the display is received, and the hand performing a transverse gesture followed by a grab gesture followed by a longitudinal gesture followed by an execute gesture is identified in the sequence of three-dimensional (3D) maps, and an operation associated with the selected object is accordingly performed.

Abstract: A method includes presenting, on a display coupled to a computer, an image of a keyboard comprising multiple keys, and receiving a sequence of three-dimensional (3D) maps including a hand of a user positioned in proximity to the display. An initial portion of the sequence of 3D maps is processed to detect a transverse gesture performed by a hand of a user positioned in proximity to the display, and a cursor is presented on the display at a position indicated by the transverse gesture. While presenting the cursor in proximity to the one of the multiple keys, one of the multiple keys is selected upon detecting a grab gesture followed by a pull gesture followed by a release gesture in a subsequent portion of the sequence of 3D maps.

Abstract: A method, including receiving, by a computer, a sequence of three-dimensional maps containing at least a hand of a user of the computer, and identifying, in the maps, a device coupled to the computer. The maps are analyzed to detect a gesture performed by the user toward the device, and the device is actuated responsively to the gesture.

Abstract: A method including presenting, by a computer, multiple interactive items on a display coupled to the computer, and receiving, from a depth sensor, a sequence of three-dimensional (3D) maps containing at least a hand of a user of the computer. An explicit select gesture performed by the user toward one of the interactive items is detected in the maps, and the one of the interactive items is selected responsively to the explicit select gesture. Subsequent to selecting the one of the interactive items, a TimeClick functionality is actuated for subsequent interactive item selections to be made by the user.

Abstract: A method, including receiving, by a computer executing a non-tactile three dimensional (3D) user interface, a set of multiple 3D coordinates representing a gesture by a hand positioned within a field of view of a sensing device coupled to the computer, the gesture including a first motion in a first direction along a selected axis in space, followed by a second motion in a second direction, opposite to the first direction, along the selected axis. Upon detecting completion of the gesture, the non-tactile 3D user interface is transitioned from a first state to a second state.

Abstract: A gesture based user interface includes a movement monitor configured to monitor a user's hand and to provide a signal based on movements of the hand. A processor is configured to provide at least one interface state in which a cursor is confined to movement within a single dimension region responsive to the signal from the movement monitor, and to actuate different commands responsive to the signal from the movement monitor and the location of the cursor in the single dimension region.