Apparatus for classifying movement of objects along a passage by type and direction employing time domain patterns
First Claim
1. Apparatus for classifying the movement of objects along the length of a passage comprising:
- means for forming a passage having a length defined by an entrance and an exit spaced from the entrance and through which said objects enter, pass through and leave said passage;
signal generating means coupled to the passage responsive to the presence of said objects in the passage for generating a plurality of first object sense signals each manifesting the presence or absence of at least one of said objects moving through a plurality of different regions spaced along the length of the passage, each region corresponding to a different one of said first signals, each first signal having an associated sense index having a value representing its corresponding region, said at least one sensed moving object representing at least one of a plurality of different classes;
means including signal segmenting means responsive to the first signals applied as an input thereto for generating from said first sense signals a segmented pattern representation signal representing a multi-dimensional pattern manifesting the at least one object moving in the spaced regions, said pattern comprising a plurality of segments at least one of which segments manifests the movement of the at least one object along the passage, said at least one segment comprising a first dimension in the time domain and a second dimension comprising said sense index value of each said plurality of first signals; and
means including pattern recognition means for classifying the at least one segment of the pattern according to the at least one of said different classes and for generating a corresponding output signal.
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Accused Products
Abstract
An array of spaced parallel linear radiation beams are projected across a passage in sequentially spaced regions. Detectors sense when the beams are interrupted by one or more persons moving in the passage in either of two opposite directions. The beams are interrupted at different times in a sequence corresponding to the number of and direction of movement of persons. The sequentially generated interrupted beam signals are stored as object movement historic information in memory and later processed to generate composite beam interrupt patterns manifesting the number of persons and direction of movement, the patterns being a function of time domain and sensor index, i.e., sensor identity and position in the passage. The resulting generated patterns are compared to reference patterns utilizing computerized pattern recognition analysis such as with an artificial neural network. The comparison classifies the persons in the passage into direction of movement and number.
53 Citations
20 Claims
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1. Apparatus for classifying the movement of objects along the length of a passage comprising:
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means for forming a passage having a length defined by an entrance and an exit spaced from the entrance and through which said objects enter, pass through and leave said passage; signal generating means coupled to the passage responsive to the presence of said objects in the passage for generating a plurality of first object sense signals each manifesting the presence or absence of at least one of said objects moving through a plurality of different regions spaced along the length of the passage, each region corresponding to a different one of said first signals, each first signal having an associated sense index having a value representing its corresponding region, said at least one sensed moving object representing at least one of a plurality of different classes; means including signal segmenting means responsive to the first signals applied as an input thereto for generating from said first sense signals a segmented pattern representation signal representing a multi-dimensional pattern manifesting the at least one object moving in the spaced regions, said pattern comprising a plurality of segments at least one of which segments manifests the movement of the at least one object along the passage, said at least one segment comprising a first dimension in the time domain and a second dimension comprising said sense index value of each said plurality of first signals; and means including pattern recognition means for classifying the at least one segment of the pattern according to the at least one of said different classes and for generating a corresponding output signal.
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2. Apparatus for classifying movement of objects along a passage comprising:
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means for forming said passage having a length defined by an entrance and an exit spaced from the entrance and through which passage said objects pass; a plurality of object sensors in an array spaced along the passage length, each sensor for generating a corresponding first signal manifesting the presence or absence of at least one object moving in the passage in a corresponding one of a plurality of spaced regions each defined by an object sensor spaced along the length of the passage, each sensor being associated with a corresponding sensor index having a value representing its sensor region, said at least one object moving in the passage representing at least one of a plurality of different classes; signal generating means including means responsive to the first signals applied as an input thereto for generating a multi-dimensional pattern representation signal whose pattern manifests the presence or absence of the at least one object in the spaced regions, said pattern having a plurality of segments at least one of which manifests the movement of the at least one object along the passage length, said at least one segment comprising a first dimension in the time domain and a second dimension comprising said sensor index value of each of said plurality of first signals; and pattern recognition means responsive to the pattern representation signal applied as an input thereto for classifying the at least one segment of the pattern according to the at least one of said different classes and for generating a corresponding output signal. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. Apparatus for classifying the movement of objects along the length of a passage comprising:
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passage means for forming said passage including an entrance and an exit spaced therefrom defining a passage length; means coupled to the passage means for generating a plurality of first object sense signals across said passage at spaced intervals along the passage length, each signal manifesting the presence or absence of at least one object moving through a plurality of different spaced regions along the length of the passage, each region corresponding to a different one of said first signals, each first signal having an associated sense index having a value representing its corresponding region, said at least one sensed object representing at least one of a plurality of different classes comprising the movement of the at least one object in either of two opposite directions along the passage; pattern generating means responsive to the sense signals applied thereto for generating from said first sense signals a pattern representation signal representing a multi-dimensional pattern manifesting the at least one object moving in the spaced regions along the passage length, said pattern of the representation signal comprising a plurality of segments at least one of which segments manifests the movement of the at least one object along the passage, said at least one segment comprising a first dimension in the time domain and a second dimension comprising said sense index value of each of said first signals; and pattern recognition means for classifying the at least one segment of the pattern according to the at least one of said different classes and for generating a corresponding output signal. - View Dependent Claims (20)
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18. Apparatus for classifying movement of objects along a passage comprising:
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means for forming a passage having a length defined by an entrance spaced from an exit through which said object passes; a plurality of object sensors in an array spaced along the passage length, each sensor for generating a corresponding first signal manifesting the presence or absence of at least one object moving in the passage in a corresponding one of a plurality of spaced regions along the length of the passage, each sensor being associated with a corresponding sensor index having a value representing its corresponding region, said at least one object when moving in the passage representing at least one of a plurality of different classes comprising movement of the at least one object is either of two opposite directions along the passage; signal generating means including means responsive to the first signals applied as an input thereto for generating a multi-dimensional pattern representation signal whose pattern manifests the presence or absence of the at least one object in the spaced regions, said pattern having a plurality of segments at least one of which manifests the movement of the at least one object along the passage, said at least one segment comprising a first dimension in the time domain and a second dimension comprising said sensor index value of each said first signals; and pattern recognition means responsive to the pattern representation signal applied as an input thereto for classifying the at least one segment of the pattern according to the at least one of said different classes and for generating a corresponding output signal. - View Dependent Claims (19)
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Specification