Method and device for detecting falls by image analysis

摘要

The present invention relates to a method for detecting a fall of a person by analysis of a stream of video images originating from an image capture device, comprising:
acquisition (21) of successive images of a determined scene;selection (23, 25, 27) of at least one point of the scene in said images;determination of the movement (29) of each point selected by analysis of the displacement of said point in the successive images in the form of a temporal succession of vectors oriented proportionally to the instantaneous velocity of the movement of said point;computation (31) of the instantaneous acceleration of each point associated with each vector representing the instantaneous velocity;detection of a fall (33) when the determined instantaneous velocity is above a predefined threshold velocity and the instantaneous acceleration is above a predefined threshold acceleration.

主权项

1. Method for detecting a fall of a person by analysis of a stream of video images originating from an image capture device, comprising:
acquisition of successive images of a determined scene; selection of at least one point of the scene in said images; determination of the movement of each point selected by analysis of the displacement of said point in the successive images in the form of a temporal succession of vectors oriented proportionally to the instantaneous velocity of the movement of said point; computation of the instantaneous acceleration of each point associated with each vector representing the instantaneous velocity; detection of a fall when the determined instantaneous velocity is above a predefined threshold velocity and the instantaneous acceleration is above a predefined threshold acceleration.