Footprint heavy pressure surface pick-up and description

The distribution of footprint heavy pressure surface reflects the behavior feature and the physiological feature of the human body. So, footprint heavy pressure surface pick-up and description is the foundation of footprint biological feature identification. We put forward a kind of footprint heavy pressure surfaces pick-up method based on Gauss curvature and average curvature. This method can pick-up effectively footprint heavy pressure surfaces that we are interested in. On this foundation, we still put forward the description method based on footprint range image overall and regional features which can reflect the built-in biological feature of human body. The result of experiment shows that this description method is simple and practicality.