METHOD AND SYSTEM FOR DETECTING A FALLEN PERSON USING A RANGE IMAGING DEVICE
First Claim
1. A method for detecting a fallen person, comprising:
- generating an initial range image corresponding to a field of view of a data acquisition system;
identifying a reference plane disposed in the field of view of the data acquisition system;
determining one or more regions in the initial range image indicative of one or more objects disposed above the reference plane in the field of view of the data acquisition system;
regenerating a range image corresponding to the field of view of the data acquisition system after a determined time period;
comparing the regenerated range image with the initial range image to determine if the regenerated range image comprises a new object disposed above the reference plane; and
determining whether the new object disposed above the reference plane is the fallen person if a height of the new object is less than a determined height and at least one of a volume and a surface area of the new object is greater than a determined value.
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Accused Products
Abstract
A method and system for detecting a fallen person is described. An initial range image corresponding to a field of view of a DAS is generated. Further, a reference plane disposed in the field of view is identified. Additionally, one or more regions in the initial range image indicative of one or more objects disposed above the reference plane in the field of view are determined. Further, the DAS regenerates a range image corresponding to the field of view after a determined time period. The regenerated range image is compared with the initial range image to determine if the regenerated range image comprises a new object disposed above the reference plane. The new object is determined to be the fallen person if a height of the new object is less than a determined height and a volume and/or a surface area of the new object is greater than a determined value.
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Citations
17 Claims
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1. A method for detecting a fallen person, comprising:
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generating an initial range image corresponding to a field of view of a data acquisition system; identifying a reference plane disposed in the field of view of the data acquisition system; determining one or more regions in the initial range image indicative of one or more objects disposed above the reference plane in the field of view of the data acquisition system; regenerating a range image corresponding to the field of view of the data acquisition system after a determined time period; comparing the regenerated range image with the initial range image to determine if the regenerated range image comprises a new object disposed above the reference plane; and determining whether the new object disposed above the reference plane is the fallen person if a height of the new object is less than a determined height and at least one of a volume and a surface area of the new object is greater than a determined value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for detecting a fallen person, comprising:
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a data acquisition system that generates an initial range image corresponding to a field of view of the data acquisition system; and a processing subsystem, communicatively coupled to the data acquisition system, wherein the processing subsystem; identifies a reference plane disposed in the field of view of the data acquisition system; determines one or more regions in the initial range image indicative of one or more objects disposed above the reference plane in the field of view of the data acquisition system; regenerates a range image corresponding to the field of view of the data acquisition system after a determined time period; compares the regenerated range image with the initial range image to determine if the regenerated range image comprises a new object disposed above the reference plane; and determines whether the new object disposed above the reference plane is the fallen person if a height of the new object is less than a determined height and at least one of a volume and a surface area of the new object is greater than a determined value. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification