摘要
使用计算机视觉技术,对球场中运动员和关键点的位置进行测量,是基于视频的技、战术分析系统的核心技术,也是运动解析的重要原理,更是体育科学研究的重要工具。介绍其理论基础与实现方法,探讨测量误差和RANSAC容错算法,介绍使用三维模型进行标定和结果演示。实验证明,提出的方法和传统方法相比,提高了纠错能力和适应性,在体育科研中有广泛的应用价值。
Computer vision based visual measurement of points on ground plane via video or digital image are introduced by paper. What we presented is fundamental for sport software and crucial for the tactic analysis. This paper introduces the basic theory, discusses the error of measurement and use RANSAC algorithm framework to improve algorithm accuracy. The 3D model can visible and very useful when we do calibration and presentation of analysis. The result of experiments showed that the method in the paper is more robust, flexible than traditional method and can be widely used in many fields of sport science.
出处
《中国体育科技》
CSSCI
北大核心
2008年第1期12-16,共5页
China Sport Science and Technology
关键词
视觉测量
RANSAC
单应性矩阵
图像坐标
球场坐标
击球落点
网球
visual measurement
RANSAC
hornography matrix
image coordinates
stadium coordinates
serve placement
tennis
athlete tracking
