Abstract: Embodiments of electronic systems, devices, and associated methods of touch free user input recognition are described. In one embodiment, a method includes detecting a plurality of spatial positions of a user's finger or an object associated with the user's finger with respect to time. The method also includes calculating a section length and a direction change for a plurality of pairs of consecutive detected spatial positions of the user's finger or the object associated with the user's finger. The method further includes determining if a temporal trajectory formed by the plurality of spatial positions of the user's finger or the object associated with the user's finger correspond to natural shakiness of the user's finger based on the calculated section lengths and direction changes.

Abstract: Various embodiments of electronic systems and associated methods of hands-free operation are described. In one embodiment, a method includes acquiring an image of a user's finger and/or an object associated with the user's finger with a camera, recognizing a gesture of the user's finger or the object based on the acquired image, and determining if the recognized gesture correlates to a command or a mode change for a processor. If the monitored gesture correlates to a command for a processor, the method includes determining if the processor is currently in a standby mode or in a control mode. If the processor is in the control mode, the method includes executing the command for the processor; otherwise, the method includes reverting to monitoring a gesture of the user's finger.

Abstract: Embodiments of electronic systems, devices, and associated methods of operation are described herein. In one embodiment, a computing system includes an input module configured to acquire images of an input device from a camera, the input device having a plurality of markers. The computing system also includes a sensing module configured to identify segments in the individual acquired images corresponding to the markers. The computing system further includes a calculation module configured to form a temporal trajectory of the input device based on the identified segments and an analysis module configured to correlate the formed temporal trajectory with a computing command.