Gait pattern analysis for predicting falls
AssigneePurdue Research Foundation
InventorsBabak Ziaie, Albert Kim, Junyoung Kim, Shirley Rietdyk
Life of this patent
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Abstract
A method for acquiring gait parameters of an individual is disclosed. The method includes capturing calibration images from foot marker placed on feet or shoes of an individual while an individual is standing still, the calibration images are obtained from a camera worn by the individual, capturing subsequent time-varying images from the foot markers while the individual is walking, and comparing the calibration images to the subsequent time-varying images by a processing unit that is coupled to the camera to determine changes between the initial relative image size of the foot markers and the time-varying images of the foot markers as a function of time to analyze gait of the individual.
Claims15
A method for acquiring gait parameters of an individual, comprising:
- capturing calibration images from foot markers placed on feet or shoes of an individual while an individual is standing still, the calibration images are obtained from a camera worn by the individual;
- capturing subsequent time-varying images from the foot markers while the individual is walking;
- and
- comparing the calibration images to the subsequent time-varying images by a processing unit that is coupled to the camera to determine changes between the initial relative image size of the foot markers and the time-varying images of the foot markers as a function of time to analyze gait of the individual.
A smart gait analysis system, comprising:
- a camera worn by an individual;
- a processing unit coupled to the camera;
- a left foot marker placed on the left shoe or foot of the individual;
- and
- a right foot marker placed on the right shoe or foot of the individual,
- the camera is configured to acquire images from the foot markers as the individual is walking,
- the processing unit is configured to
- capture calibration images from the foot marker while an individual is standing still obtained from the camera,
- capture subsequent time-varying images from the foot markers while the individual is walking, and
- compare the calibration images to the subsequent time-varying images to determine changes between the initial relative image size of the foot markers and the time-varying images of the foot markers as a function of time to analyze gait of the individual.
Dependencies are inferred from the claim text.