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dc.contributor.authorChen, Hua-Tsungen_US
dc.contributor.authorTien, Ming-Chunen_US
dc.contributor.authorChen, Yi-Wenen_US
dc.contributor.authorTsai, Wen-Jiinen_US
dc.contributor.authorLee, Suh-Yinen_US
dc.date.accessioned2014-12-08T15:09:42Z-
dc.date.available2014-12-08T15:09:42Z-
dc.date.issued2009-04-01en_US
dc.identifier.issn1047-3203en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.jvcir.2008.11.008en_US
dc.identifier.urihttp://hdl.handle.net/11536/7427-
dc.description.abstractThe demand for computer-assisted game study in sports is growing dramatically. This paper presents a practical video analysis system to facilitate semantic content understanding. A physics-based algorithm is designed for ball tracking and 3D trajectory reconstruction in basketball videos and shooting location statistics can be obtained. The 2D-to-3D inference is intrinsically a challenging problem due to the loss of 3D information in projection to 2D frames. One significant contribution of the proposed system lies in the integrated scheme incorporating domain knowledge and physical characteristics of ball motion into object tracking to overcome the problem of 2D-to-3D inference. With the 2D trajectory extracted and the camera parameters calibrated, physical characteristics of ball motion are involved to reconstruct the 3D trajectories and estimate the shooting locations. Our experiments on broadcast basketball videos show promising results. We believe the proposed system will greatly assist intelligence collection and statistics analysis in basketball games. (C) 2008 Elsevier Inc. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectShot classificationen_US
dc.subjectObject trackingen_US
dc.subjectSports video analysisen_US
dc.subjectCamera calibrationen_US
dc.subjectSemantic analysisen_US
dc.subjectMultimedia systemen_US
dc.subject3D trajectory reconstructionen_US
dc.titlePhysics-based ball tracking and 3D trajectory reconstruction with applications to shooting location estimation in basketball videoen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.jvcir.2008.11.008en_US
dc.identifier.journalJOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATIONen_US
dc.citation.volume20en_US
dc.citation.issue3en_US
dc.citation.spage204en_US
dc.citation.epage216en_US
dc.contributor.department交大工研院聯合研發中心zh_TW
dc.contributor.departmentNCTU/ITRI Joint Research Centeren_US
dc.identifier.wosnumberWOS:000264595500004-
dc.citation.woscount17-
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