Tracking dynamic on-stage objects
First Claim
1. A method, comprising:
- determining an initial state of a motion tracker carried on a performer during a calibration, the performer moving in a manner representable using a two dimensional plane, wherein the two dimensional plane is quantifiable with a motion unit in terms of a fixed dimension of the performer and the fixed dimension is statically measured during the calibration of the motion tracker and a driving controller;
monitoring acceleration and orientation information gathered by the motion tracker;
determining a change of state in response to the monitored acceleration and orientation information;
calculating an instant state using the change of state and the initial state; and
generating by the driving controller of actuation signals based on the calculated instant state to control actuation of a gimbal supporting a device to cause the device to face the device toward the performer.
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Abstract
Methods and systems for dynamic tracking of on-stage objects using microelectromechanical systems (MEMS) presented herein do not require illumination to track a randomly moving object and are easily configurable for various stage sizes and for stages movable relative to the ground. In some instances, a tracking method includes determining an initial state of an MEMS motion tracker carried on a dynamic object, such as a performer. Acceleration and orientation information gathered by the motion tracker is monitored. A change of state in response to the monitored acceleration and orientation information is then determined. An instant state is calculated using the change of state and the initial state. Actuation signals based on the calculated instant state are generated for actuating a gimbal. The gimbal faces a device supported thereby toward the dynamic object.
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Citations
28 Claims
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1. A method, comprising:
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determining an initial state of a motion tracker carried on a performer during a calibration, the performer moving in a manner representable using a two dimensional plane, wherein the two dimensional plane is quantifiable with a motion unit in terms of a fixed dimension of the performer and the fixed dimension is statically measured during the calibration of the motion tracker and a driving controller; monitoring acceleration and orientation information gathered by the motion tracker; determining a change of state in response to the monitored acceleration and orientation information; calculating an instant state using the change of state and the initial state; and generating by the driving controller of actuation signals based on the calculated instant state to control actuation of a gimbal supporting a device to cause the device to face the device toward the performer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for tracking a moving dynamic object, the system comprising:
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a motion tracker carried on a dynamic object, the motion tracker being set at an initial state and operable to gather data of acceleration and orientation for calculation of an instant state, the instant state being determined from a change of state; a wireless transceiver transmitting signals to a driving controller, the signals representing the gathered data or the instant state; a gimbal controlled by the driving controller generating driving signals from the instant state; and a device supported by the gimbal, wherein the driving signals generated by the driving controller cause the gimbal to operate to orient the device to face the dynamic object, and wherein the dynamic object moves in a manner representable using a two dimensional plane quantifiable using a fixed dimension of a performer carrying the dynamic object, the fixed dimension is statically measured from the performer during the calibration and used as a motion unit to quantify the two dimensional plane. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A stage tracking system comprising:
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a wearable motion tracker carried by a human performer moving in a manner representable in a two dimensional plane of a finite size, the wearable motion tracker including a microelectromechanical system for gathering data to calculate an instant state of the wearable motion tracker; and a driving controller configured to receive motion signals from the wearable motion tracker and generate control signals which control operation of a gimbal that supports a directional device to cause the directional device to face towards the human performer, the motion signals representing the gathered data or the instant state, wherein the two dimensional plane is quantifiable using a fixed dimension of the human performer and the fixed dimension is statically measured from the performer during the calibration. - View Dependent Claims (26, 27, 28)
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Specification