Perspective tracking system
First Claim
1. A perspective tracking system comprising:
- a computer-based perspective tracking device; and
an array of emitters configured to define at least one area of interest based on emitted signals from at least two emitters in the array of emitters;
wherein the computer-based perspective tracking device is configured to determine a spatial position, orientation, and size of the area of interest based on the emitted signals from the array of emitters; and
wherein the computer-based perspective tracking system is configured to measure a light intensity of each of the at least two emitters in the array of emitters over a detection threshold and generate a correction equation to the light intensity measurement that yields temperature-based offsets.
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Accused Products
Abstract
Resolution of perspective in three dimensions is necessary for intermeshing real players into simulated environments during virtual training exercises. With the advent of high resolution image sensors the ability to sense position and orientation using image capture devices is possible. The combination of small sized sensors and image recognition tracking algorithms allows the tracking element to be placed directly on the device whose perspective is desired. This provides a solution to determining perspective as it provides a direct measurement from the center axis of the observer. This invention employs a perspective tracking device to determine a point-of-gaze or a point-of-aim in a three-dimensional space to a high degree of accuracy. Point-of-gaze may be used to determine views for head mounted displays and aim-points for weapons. The invention may operate in an unconstrained space allowing simulation participants to operate in a larger, open environment. Areas of interest in the environment are bounded by area of interest markers which identify the region and its physical constraints.
53 Citations
11 Claims
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1. A perspective tracking system comprising:
- a computer-based perspective tracking device; and
an array of emitters configured to define at least one area of interest based on emitted signals from at least two emitters in the array of emitters; wherein the computer-based perspective tracking device is configured to determine a spatial position, orientation, and size of the area of interest based on the emitted signals from the array of emitters; and
wherein the computer-based perspective tracking system is configured to measure a light intensity of each of the at least two emitters in the array of emitters over a detection threshold and generate a correction equation to the light intensity measurement that yields temperature-based offsets. - View Dependent Claims (2, 3, 4, 5, 6)
- a computer-based perspective tracking device; and
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7. A perspective tracking method comprising:
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capturing, using a computer-based system, an image frame wherein said image frame includes a location of an emitter and a location of a second emitter; determining, using the computer-based system, an area of interest based on the location of the first emitter and the location of the second emitter; determining, based on the locations of the first and second emitters, a spatial position, an orientation, and a size of the area of interest;
wherein the capture of the image frame comprises measuring a light intensity of each of the first and second emitters over a detection threshold and applying a correction equation to the light intensity measurement that yields temperature-based offsets. - View Dependent Claims (8)
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9. A computer program product comprising a non-transitory computer usable medium having control logic stored therein for causing a computer to track a perspective of an array of emitters, the control logic comprising:
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first computer readable program code for causing the computer to capture an image frame wherein said image frame includes a location of a first emitter and a location of a second emitter; second computer readable program code for causing the computer to determine an area of interest based on the location of the first emitter and the location of the second emitter; third computer readable program code for causing the computer to determine, based on the locations of the first and second emitters, a spatial position, an orientation, and a size of the area of interest; herein the first computer readable program code further comprises; computer readable program code for causing the computer to measure a light intensity of each of the first and second emitters over a detection threshold; and computer readable program code for causing the computer to generate a correction equation to the light intensity measurement that yields temperature-based offsets. - View Dependent Claims (10, 11)
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Specification