Method and system for fall detection
First Claim
1. A method for detecting motion, comprising:
- positioning a data acquisition system at a desired position and establishing a reference line based on the desired position of the data acquisition system;
partitioning a field of view of the data acquisition system into an upper region and a lower region based on the reference line;
acquiring motion information corresponding to a person in the field of view of the data acquisition system based on a plurality of pixels that experiences a change in a corresponding parameter;
determining if the acquired motion information corresponds to the upper region, the lower region, or a combination thereof, in the field of view of the data acquisition system based on the plurality of pixels that experiences a change in a corresponding parameter;
computing a duration of motion, a magnitude of motion and an area of motion of the person in the upper region, the lower region, or a combination thereof, based on the plurality of pixels that experiences a change in a corresponding parameter; and
detecting a type of fall event corresponding to the person based on the computed duration of motion, the magnitude of motion and the computed area of motion of the person in the upper region, the lower region, or a combination thereof.
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Abstract
A method and system for detecting motion is described. A data acquisition system is positioned at a desired position by establishing a reference line based on the desired position of the data acquisition system. Further, a field of view of the data acquisition system is partitioned into an upper region and a lower region based on the reference line. Subsequently, motion information corresponding to a person in the field of view is acquired. Additionally, it is determined if the acquired motion information corresponds to the upper region and/or the lower region in the field of view. Moreover, a magnitude of motion and an area of motion of the person are computed using the acquired motion information. Subsequently, a motion event corresponding to the person in the lower region of the field of view is detected based on the determined magnitude of motion and the determined area of motion.
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Citations
27 Claims
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1. A method for detecting motion, comprising:
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positioning a data acquisition system at a desired position and establishing a reference line based on the desired position of the data acquisition system; partitioning a field of view of the data acquisition system into an upper region and a lower region based on the reference line; acquiring motion information corresponding to a person in the field of view of the data acquisition system based on a plurality of pixels that experiences a change in a corresponding parameter; determining if the acquired motion information corresponds to the upper region, the lower region, or a combination thereof, in the field of view of the data acquisition system based on the plurality of pixels that experiences a change in a corresponding parameter; computing a duration of motion, a magnitude of motion and an area of motion of the person in the upper region, the lower region, or a combination thereof, based on the plurality of pixels that experiences a change in a corresponding parameter; and detecting a type of fall event corresponding to the person based on the computed duration of motion, the magnitude of motion and the computed area of motion of the person in the upper region, the lower region, or a combination thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A fall detection system, comprising:
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a data acquisition system that acquires a plurality of pixels that experiences a change in a corresponding parameter in a field of view of the data acquisition system, wherein the plurality of pixels corresponds to a person; a positioning subsystem that positions the data acquisition system at a desired position and establishes a reference line based on the desired position of the data acquisition system; and a processing subsystem communicatively coupled to the data acquisition system, wherein the processing subsystem; partitions a field of view of the data acquisition system into an upper region and a lower region based on the reference line; acquires motion information corresponding to the person in the field of view of the data acquisition system based on a plurality of pixels that experiences a change in a corresponding parameter; determines if the acquired motion information corresponds to the upper region, the lower region, or a combination thereof, in the field of view of the data acquisition system; computes a duration of motion, a magnitude of motion and an area of motion of the person in the upper region, the lower region, or a combination thereof, based on the plurality of pixels that experiences a change in a corresponding parameter using the acquired motion information; and detects a type of a fall event corresponding to the person in the field of view of the data acquisition system based on the computed duration of motions, magnitude of motion and the computed area of motion of the person in the upper region, the lower region, or a combination thereof. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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Specification