Browsing by Author "Chen, Hsuan-Shen"

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A baseball exploration system using spatial pattern recognition
(2008)
Chen, Hua-Tsung
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Hsiao, Ming-Ho
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Chen, Hsuan-Shen
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Tsai, Wen-Jiin
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Lee, Suh-Yin
Despite a lot of research efforts in baseball video processing, little work has been done in analyzing the detailed process and ball movement of the batting content. This paper proposes a novel system to automatically summarize the progress of each batting in baseball videos. Utilizing the strictly-defined specifications of the baseball field, the system recognizes the spatial patterns in each frame and identifies what region of the baseball field is currently focused. Finally, an annotation string which abstracts the batting content is generated. With the annotation strings, the system is able to make descriptions and provide exploration for baseball videos, so that users can be given a further insight into the game quickly. The experiments on broadcast baseball videos of MLB and JPB show promising results.
Physics-based ball tracking in volleyball videos with its applications to set type recognition and action detection
(2007)
Chen, Hua-Tsung
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Chen, Hsuan-Shen
;
Lee, Suh-Yin
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資訊工程學系
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Department of Computer Science
Despite a lot of research efforts in sports video processing, little work was done in volleyball video analysis due to the high density of players on the court and the complicated overlapping of player-player or ball-player, which lead to great complexity of object tracking for advanced analysis. For ball detection and trajectory extraction in volleyball videos, this paper presents a physics-based scheme which utilizes the motion characteristics to extract ball trajectory from lots of moving objects. The experiments of ball tracking show encouraging results. Moreover, based on game-specific properties, the ball trajectory can be exploited to recognize set types for tactics inference and to detect basic actions in the volleyball game for close-up presentation.