足球场地标志线的自动提取

Automatic Extracting Feature Lines from Soccer Video Sequences

介绍一种从足球比赛录像中自动提取禁区线和球门线的方法 作为足球比赛场景三维重建和视频解说系统的一部分 ,提取的结果可用于摄像机定标和球场的重建 使用数学形态学、Hough变换、最小二乘法等多种方法 ,可以从复杂的足球比赛录像中自动提取出所有禁区线和球门线的直线参数 实验结果表明 ,文中方法对类似背景的直线提取非常有效 。

Parameters of the white lines, which are around penalty area and goal area, are first detected automatically These parameters in turn can be used to determine the camera parameters, reconstruct the soccer field, and compute the soccer players' real positions The lines are segmented by using mathematical morphology operation, and then parameters of the lines are detected by using a refined Hough transform Experimental results show that this method can extract the parameters of lines robustly and correctly from soccer video sequences, and can meet the requirement of camera calibration