Three-dimensional object path tracking
First Claim
1. A system for capturing the path of an object moving through a sensing volume defined by a three-dimensional (3D) coordinate system, comprising:
- (a) a common housing positionable at a vertex of a sensing cone encompassing the sensing volume;
(b) first, second, and third angle detectors mounted in the common housing, said first, second, and third detectors being separated from one another within said housing by known, fixed distances, wherein each said detector is for receiving a respective light beam from the object having a respective angle relative to a respective reference line of the 3D coordinate system, and for providing a signal corresponding to said respective angle;
(c) means for determining, at successive samples, successive coordinate positions of the object within the sensing volume given the first, second, and third angles at each said sample to determine said path; and
(d) means for displaying said path.
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Abstract
Capturing the path of an object moving through a sensing volume defined by a three-dimensional (3D) coordinate system. First, second, and third angle detectors are mounted in a common housing positionable at a vertex of a sensing cone encompassing the sensing volume, said first, second, and third detectors being separated from one another by known, fixed distances. Each detector receives a respective light beam from the object having a respective angle relative to a respective reference line of the 3D coordinate system, and provides a signal corresponding to said respective angle. At successive samples, successive coordinate positions of the object within the sensing volume are determined, given the first, second, and third angles at each said sample to determine said path, and the path is displayed.
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Citations
15 Claims
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1. A system for capturing the path of an object moving through a sensing volume defined by a three-dimensional (3D) coordinate system, comprising:
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(a) a common housing positionable at a vertex of a sensing cone encompassing the sensing volume; (b) first, second, and third angle detectors mounted in the common housing, said first, second, and third detectors being separated from one another within said housing by known, fixed distances, wherein each said detector is for receiving a respective light beam from the object having a respective angle relative to a respective reference line of the 3D coordinate system, and for providing a signal corresponding to said respective angle; (c) means for determining, at successive samples, successive coordinate positions of the object within the sensing volume given the first, second, and third angles at each said sample to determine said path; and (d) means for displaying said path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification