Lower-body Posture Estimation of Walking People by Using Foot Pressure Distribution

Abstract

This paper describes a method that uses video imaging and foot pressure distribution to estimate a person's lower body posture when walking. The method first estimates the position, posture, and size of the subject, from his or her foot pressure distribution.These estimates are represented by stick models, which are then projected onto video images to estimate the skeletal position. This method was tested on 90 walking patterns of 9 women, and the results show that most of the estimated skeletal structure lies inside the leg, thus confirming that this method functions effectively by repositioning the structure to the center of the leg and matching it to the edge of the video image.