Person Identification Based on Postural Sway Data: The Effects of Shouldering A Backpack

Abstract

It is said that human postural sway in quietly-standing position involves individual differences. From this viewpoint, some contributions have been made for person identification problem. However, current researches on person identification problem based on postural sway data have the following two problems: (1) the most target behavior is the postural sway after completely stepping on a stabilometer, (2) the effect of carrying weight for person identification accuracy is unclear. Therefore in this study we measure postural sway data while stepping on and off a stabilometer as well as standing quietly. In addition, we analyze the effects of shouldering a backpack for person identification accuracy. The results of experiments with 10 human subjects data show that carrying a 2kg backpack affects the identification accuracy, but the postural sway data in shouldering a backpack has a possibility to identify persons. Also, we show some extracted features in stepping on and off intervals have good effect to identify persons.