CAMSHIFT结合HOMOGRAPHY变换的算法

New Method to Extract Trajectory Based on CAMSHIFT Algorithm and HOMOGRAPHY Transformation

提出了一种基于CAMSHIFT算法结合HOMOGRAPHY变换的球员轨迹提取算法。在求取球员位置的过程中,CAMSHIFT算法通过球员的颜色直方图模型实现对球员的跟踪。在跟踪过程中引入KALMAN滤波进一步提高算法的跟踪效率。最后利用HOMOGRAPHY变换将场景视频帧转换为俯视投影图,真实反映球员在球场的位置信息。实验结果表明该算法能够较好的提取出球员的运动轨迹。

A new method to extract trajectory based on CAMSHIFT algorithm and HOMOGRAPHY transformation in soccer video is proposed in this paper.In the process of procuring the player＇s position,the CAMSHIFT algorithm is used to track the player based on the color histogram model.Kalman Filter is imposed to improve the tracking speed.Finally,Homography transformation is introduced to get the player＇s real position in the playfield.The experimental results show that the proposed method can extract accurate player＇s motion trajectory robustly.