三维足型参数自动测量系统设计与实现

Design and Implementation of 3D Foot Size Measurement System

以青年田径运动员足型研究为背景,基于足部扫描仪输出的三维足部点云数据,设计和实现足型参数自动测量软件系统。系统定义了12个测点和18个测量参数,给出了无标记点的测点自动识别方法和足型参数自动测量的方法,其中,围度和面积测量采用基于平面散乱点集的区间B样条拟合方法。系统具有可扩展性和易用性等特点,实现了足型参数的全自动测量。同时,允许用户对测点位置进行交互调整,提供了自定义测点和测量参数的功能。实验结果说明,该测量方法在自动识别率和准确率上都已经能够满足足部测量的需要,并且具有较强的鲁棒性,已成功应用于田径运动员的足型参数测量。

Based on the research of athletes＇ foot,this paper designs and implements 3D Foot Size Measurement System,whose input data is the point cloud of athletes＇ foot.Firstly,the system defines 12 measure points and 18 measure items,and gives an automatic unmarked extraction method of measure points;Secondly,the system gives an automatic computing method of the measure items.The girth and area measure items are computed based on the Interval B-Spline Curve fitting technique.The system is characterized by the scalability,usability and automatic measurement,and allows the user to interactively update the positions of measure points during the measurement process.The system also supports user-defined measure points and items.The results show that the measurement method provided in this paper can not only meet the requirements of foot size measurement system both in recognition rate and in precision,but also possess strong robustness.It has been applied successfully in athletes＇ foot research.