立體足跡重壓面的分布反映了人體的行為特征和心理特征，立體足跡的分割和描述是足跡生物特征識別的基礎。本文提出了一種基于高斯曲率和平均曲率的足跡深度圖象交互式分割方法，可以直觀、有效地分割出我們感興趣的重壓面區域。并在此基礎上提出了基于足跡全局和區域特征的描述方法，特征均能反映人體固有的生理特征，具有較強的魯棒性。
關鍵詞：重壓面、曲率、特征描述
Abstract: The distribution of footprint heavy pressure surface reflects the behavior feature and the physiological feature of 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. And 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.
Key words: heavy pressure surface, curvature, feature description