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motion capture

(1) See gesture recognition.

(2) The entering of a movement pattern into the computer. For example, if a person, hooked up to sensors, goes through the act of batting a ball, that motion trail can be used to simulate a more realistic baseball player in the computer.




Capturing Live Motion in Real Time
The ULTRATRAK PRO system from Polhemus provides a series of wearable sensors that captures motion in six degrees of freedom (6DOF). The sensors connect via Ethernet, and the ULTRATRAK PRO software interfaces with 3D animation programs to provide real-time capture of the person's movements. (Image courtesy of Polhemus, Inc.)






gesture recognition

(1) Computer recognition of handwritten check marks, slashes and other shorthand symbols as commands and annotations.

(2) Swiping a touchscreen with a finger or stylus. Definition #3 below is the common meaning of the term; however, swiping with one finger, and motions such as pinching with two fingers, also fall under the programming category of gesture recognition. See swipe and multitouch.

(3) Identifying hand and body movements. In 1998, Toshiba introduced a device that used infrared light reflected from a user's hand to sense its motion. More than a decade later in 2010, this capability was employed in Microsoft's Kinect controller for its Xbox, and motion control products have debuted ever since. See Kinect.




Pretend It's in Your Hand
The Leap Motion controller lets people play games and musical instruments, create objects and explore the world with dozens of Windows and Mac gesture-based apps from the Airspace online store. (Image courtesy of Leap Motion, Inc., www.leapmotion.com)






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