Simple Method of Extracting Characteristic Facial Expression for Monitoring System Regarding the Elderly

Abstract

We propose a simple method of extracting characteristic facial expressions from video for monitoring system regarding the elderly. Our proposed method extracts several characteristic facial expression images from video to estimate the approximate psychological state of the elderly rather than conveying safety information, as with conventional method. Specifically, facial expression images are extracted using an index of the difference in features between criteria facial image and facial images detected from each frame.