Activity Recognition Based on Thermopile Imaging Array Sensor

Abstract

In this paper, a low resolution infrared array sensor is used to develop an activity recognition system for elderly people. The sensor is composed of a $32\times 32$ thermopile array with the corresponding $33^{\circ}\times 33^{\circ}$ field of view. The outputs of the sensor are sequential images in which each pixel contains a temperature value. According to the thermopile images, the activity recognition system first determines whether the target is within the tracking area; if the target is within the tracking area, the location of the target will be detected and three kinds of activities will be identified.