Person and object recognition system
First Claim
1. A system for automatically recognizing persons or objects as they move past a selected location and for classifying said persons or objects in accordance with selected criteria, said system comprising:
- means for emitting beams toward a person or object moving past a selected location to generate reflected beams from said person or object intercepting said beams, the included angle of an emitted and reflected beam being a function of the height of the person or object;
means for detecting said reflected beams and generating signals representative of the included angles and thus the height of the person or object;
means for determining the speed and length of the person or object intercepting said emitted beams;
means for generating signals representing a time dependent height profile of the person or object from which the beams are reflected; and
means for classifying said person or object in accordance with selected criteria.
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Accused Products
Abstract
A system for automatically recognizing persons or objects as they move past a selected location and for classifying the persons or objects in accordance with selected criteria. The system includes emitters for emitting beams toward a person or object moving past a selected location to generate reflected beams from the person or object. The included angle of the emitted and reflected beam is a function of the height of the person or object. A detector detects the reflected beams and generates signals representative of the included angle, and thus representative of a time-dependent height profile of the person or object from which the beams are reflected. The person or object is classified according to selected criteria.
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Citations
32 Claims
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1. A system for automatically recognizing persons or objects as they move past a selected location and for classifying said persons or objects in accordance with selected criteria, said system comprising:
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means for emitting beams toward a person or object moving past a selected location to generate reflected beams from said person or object intercepting said beams, the included angle of an emitted and reflected beam being a function of the height of the person or object; means for detecting said reflected beams and generating signals representative of the included angles and thus the height of the person or object; means for determining the speed and length of the person or object intercepting said emitted beams; means for generating signals representing a time dependent height profile of the person or object from which the beams are reflected; and means for classifying said person or object in accordance with selected criteria. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9)
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4. The system of claim 4 wherein said location has multiple optics modules spaced at selected intervals.
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10. A system for automatically recognizing persons or objects as they move past a selected location and for classifying said persons or objects in accordance with selected criteria, said system comprising:
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means for emitting at least two beams toward a person or object moving past a selected location to generate reflected beams from said person or object, the included angles of the emitted and reflected beams being a function of the height of the person or object, said emitted beams being generated from different locations along the path of movement of said person or object such that as the person or object moves past said location, the person or object first intercepts one emitted beam and then the other; means for detecting said reflected beams and generating signals representative of the included angles and thus the height of the person or object; means for determining the speed of the person or object intercepting said emitted beams; and means for classifying said person or object in accordance with selected criteria. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for automatically recognizing persons or objects as they move past a selected location and for classifying said persons or objects in accordance with selected criteria, said method comprising the steps of:
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emitting beams toward a person or object moving past the selected location to generate reflected beams from said person or object intercepting said beams, the included angles of the emitted and reflected beams being a function of the height of the person or object; detecting said reflected beams and generating signals representative of the included angle and thus the height of the person or object; determining the speed and length of the person or object intercepting said emitted beams; generating signals representing a time-dependent height profile of the person or object from which the beams are reflected; and classifying said person or object in accordance with selected criteria. - View Dependent Claims (23, 24)
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22. The method of claim 22 wherein said beams are infrared beams, and further comprising a position sensitive detector, said method further comprising generating signals in response to the positions that the reflected beams strike the detector.
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25. A method for automatically recognizing persons or objects as they move past a selected location and for classifying said persons or objects in accordance with selected criteria, said method comprising the steps of:
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emitting at least two beams toward a person or object moving past a selected location to generate reflected beams from said person or object, the included angles of the emitted and reflected beams being a function of the height of the person or object, said emitted beams being generated from different locations along the path of movement of said person or object such that as the person or object moves past said location, the person or object first intercepts one emitted beam and then the other; detecting said reflected beams and generating signals representative of the included angles and thus the height of the person or object; measuring the speed of the person or object intercepting said emitted beams; and classifying said person or object in accordance with selected criteria. - View Dependent Claims (26, 27, 29, 30, 31, 32)
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28. The method of claim 28 wherein said classifying step further comprises classifying said person or object in accordance with criteria relating to the height, speed, and length of the person or object intercepting said emitted beams.
Specification