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Finger tracking of two pianists' fingers playing the same piece (slow motion, no sound) [1]. In the field of gesture recognition and image processing, finger tracking is a high-resolution technique developed in 1969 that is employed to know the consecutive position of the fingers of the user and hence represent objects in 3D.
As mentioned later in this article, pointing devices have different possible states. Examples for these states are out of range, tracking or dragging. Examples. a computer mouse is an indirect, relative, isotonic, position-control, translational input device with two degrees of freedom (x, y position) and two states (tracking, dragging).
The format contains the 3D positions and orientations of all segments captured with Xsens MVN. In addition, the format includes several other variables to be exported such as joint angles, segment velocity and free acceleration, center of mass trajectory and calibrated sensor data of the individual motion trackers.
The first commercially available ultrasound device was the Stratos Explore by Ultrahaptics that consisted of 256-transducer array board and a Leap motion controller for hand tracking [32] Another form of tactile feed back results from active touch when a human scans (runs their finger over a surface) to gain information about a surfaces texture.
Size reduction of mobile devices is often limited by the size of the used display. Apart from the display a complete phone can be, for example, integrated in a headset. It has been demonstrated that pico projectors integrated in headsets could be used as interaction devices, e.g., using additional hand and finger tracking.
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SixthSense is a gesture-based wearable computer system developed at MIT Media Lab by Steve Mann in 1994 and 1997 (headworn gestural interface), and 1998 (neckworn version), and further developed by Pranav Mistry (also at MIT Media Lab), in 2009, both of whom developed both hardware and software for both headworn and neckworn versions of it.
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