Recognizing Housework and Figuring Out Its Conscientious Degree from One-Dimensional Brightness

Abstract

The lack of helpers in facilities to take care of the elderly has become a serious problem in Japan, because of the rapid increase of the elderly. It is necessary for the elderly living alone to keep their living willingness enough to stay in a status free from case. The method uses the brightness distribution sensors to collect movement logs in order to protect the privacy of the elderly. The brightness distribution acquired by the sensors brings information significant enough for a machine to discern living activities. This study figures out the conscientious degree with the difference of the body trunk movement of the person carrying out of the living activities. In an experiment for the elderly, the f-measure with which the method has recognized activities of cleaning, cooking, and washing are 0.975, 0.912, and 0.927, respectively. The experiment shows 0.599, which indicates conscientious degree of cleaning. It justifies the proposed method uses the movement of body trunk to figuring out the conscientious degree.