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Real-time visual play-break detection in sport events using a context descriptor

Carbonneau, Marc-André et Raymond, Alexandre J. et Granger, Éric et Gagnon, Ghyslain. 2015. « Real-time visual play-break detection in sport events using a context descriptor ». In 2015 IEEE International Symposium on Circuits and Systems (ISCAS). Proceedings (Lisbon, Portugal, May 24-27, 2015), p. 2808-2811. Piscataway, NJ, USA : IEEE.

Granger E. 2015 11318 Real-time visual play-break detection in sport events using a context.pdf

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This paper presents a two-stage hierarchical method for play-break detection on non-edited team sports video feed. Unlike most existing methods, this algorithm uses modern action and event recognition method thus does not rely on production cues of broadcast feeds, but instead concentrates on the content of the video. Moreover, the method does not require player tracking, can be used in real-time and can be easily adapted to different sports. In the first stage, bag-of-words event detectors are trained to recognize key events such as line changes, face-offs and preliminary play-breaks. In the second stage, the output of the detectors along with a novel feature based on the number of detected spatio-temporal interest points are used to create a context descriptor. The final classification is performed on this context descriptor. Experiments demonstrate the benefits of using this context descriptor by reducing the frame classification error by 18% when compared to the baseline method. The efficiency of the proposed method is demonstrated on a real hockey game (accuracy over 88%).

Type de document: Compte rendu de conférence
Granger, Éric
Gagnon, Ghyslain
Affiliation: Génie de la production automatisée, Génie électrique
Date de dépôt: 21 sept. 2015 17:48
Dernière modification: 24 sept. 2015 20:14

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