Patent ID: 9721452
Date: 2017-08-01
CPC Classifications: G08B,G16H

Claim:
1. A method for managing hand-wash compliance comprising: acquiring a background image; acquiring thermal images including an initial thermal image and a subsequent thermal image; determining hot pixels of the thermal images belonging to a warm-bodied object by: estimating a user's hand-wash motions, the user's hand-wash motions being estimated by determining a change in the hot pixels between the initial thermal image and the subsequent thermal image; estimating hand-wash scrubs per minute based on the user's hand-wash motions; counting a total hand-wash scrubs based on the user's hand-wash motions; estimating hand-wash vigor based on a number of transitions between high and low motions; calculating a hand-wash score based on the hand-wash vigor; displaying the hand-wash vigor, the total hand-wash scrubs, and the hand-wash scrubs per minute on a display; displaying a timer that counts down based on the hand-wash vigor; and updating the background image based on the warm-bodied object being absent from the thermal images.