Strathprints Institutional Repository Generating Ball Trajectory in Soccer Video Sequences
Strathprints Institutional Repository Generating Ball Trajectory in Soccer Video Sequences
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Strathprints 机构存储库在足球视频序列中生成球轨迹
DOI：
10.1007/s11263-006-0030-z
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发表时间：
2003
影响因子：
19.5
通讯作者：
G. Jones
中科院分区：
文献类型：
--
作者：
Jinchang Ren;Orwell;J. Jones;J. Orwell;G. Jones
Strathprints旨在允许用户访问斯特拉斯克莱德大学的研究成果。本网站论文的版权和精神权利由个人作者和/或其他版权所有者保留。您不得为任何营利活动或任何商业利益而进一步分发材料。您可以免费发布网址（http：//strathprints.strath.ac.uk/）和本文的内容，用于研究或学习，教育或非营利目的，无需事先许可或收费。抽象的。本文展示了创新的技术，估计足球的轨迹，使用固定的摄像机与恒定的校准参数。与广播覆盖相比，对于固定的摄像机数据，球通常在远离图像中心的地方以较差的分辨率呈现。快速移动的球受到运动模糊的影响，这是由有限的快门速度和交错的场引起的，从而导致形状、大小和颜色的变化。从卡尔曼跟踪估计的速度被用于归一化球的大小和过滤球的假警报。在此基础上，利用遮挡推理和回溯的方法估计目标被遮挡时的位置，并去除虚警。最后，基于时间滞后的球的似然阈值的轨迹滤波，以提高跟踪球的鲁棒性和连续性。报告了几个长序列的有希望的实验结果。
Strathprints is designed to allow users to access the research output of the University of Strathclyde. Copyright c and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (http:// strathprints.strath.ac.uk/) and the content of this paper for research or study, educational, or not-for-profit purposes without prior permission or charge. Abstract. This paper demonstrates innovative techniques for estimating the tra-jectory of a soccer ball, using fixed cameras with constant calibration parameters. In contrast with broadcast coverage, for fixed camera data, the ball is often rendered with poor resolution away from the image centre. The rapidly moving ball is subject to motion-blur, caused by finite shutter speeds and interlaced fields, resulting in variable shape, size and colour. The velocity estimated from Kalman tracking is used in both normalising ball size and filtering the ball from false alarms. Furthermore, occlusion-reasoning and tracking-back methods are utilized to estimate its position when it is occluded, and also to remove false alarms. Finally, temporal hysteresis based thresholding of the ball likelihood is applied for trajectory filtering to improve the robustness and continuity of the tracked ball. Promising experimental results from several long sequences are reported.