Vision based system for detecting distress behavior

摘要

A system and method for detecting a distress condition of a person in a monitored location. The system is configured to receive an image stream of the monitored location, and detect a human body or body part within the monitored location. The system maintains and updates a list of areas in which the lack of movement is permitted, e.g., bed, sofa, chairs. Upon detecting that the person is no longer moving and exists in a new area that is not in the list of areas, the system enters into an acknowledgement session in which the system asks the person to perform a certain action if everything is fine. If the given action is detected within a pre-determined period the system updates the list of areas to add the new area therein, otherwise the system would execute a pre-defined function representing a response to the distress condition, e.g., call 911.

主权项

1. A vision-based computer implemented method for detecting a distress condition in a monitored location, the method comprising:
receiving images of the monitored location; detecting a human body or body part in said images; detecting a movement activity of the human body or the body part in two or more successive images; detecting a current location of said movement activity in said images; detecting a lack of movement of said human body or body part for a first pre-determined period in the current location, after detecting said movement activity; comparing the current location to a list of approved locations in which the lack of movement is acceptable; if the current location is absent from the list of approved locations requesting the human body to perform a given action; if the given action is detected within a second pre-determined period updating the list, otherwise executing a function representing a response to the distress condition.