Vol. 6, No 1, 2008 pp. 75 - 84
UDC 796.323 (497.12)
Scientific paper
AN ANALYSIS OF BASKETBALL PLAYERS' MOVEMENTS IN THE SLOVENIAN BASKETBALL LEAGUE PLAY-OFFS USING THE SAGIT TRACKING SYSTEM
Frane Erčulj1*, Brane Dežman1, Goran Vučković1, Janez Perš2, Matej Perše2, Matej Kristan2
1University of Ljubljana, Faculty of Sport, Slovenia
2University of Ljubljana, Faculty of Electrical Engineering, Slovenia
*E-mail: frane.erculj@fsp.uni-lj.si
Abstract. The main aim of the paper was to present the SAGIT measuring system and to establish the covered distance and the average velocity of basketball players' movements by using the aforementioned system. The SAGIT system is a relatively new technology which is based on computer-vision methods and enables an automated acquisition of data from the video recordings of games. The system was used to track the movements of 23 basketball players from two teams during three games of the play-offs of the Slovenian National Championship for men. It was established that during the 40 minutes of the active phase of the game the players covered a distance of 4,404 m on average and that during the passive phase, they covered an additional 1,831 meters. The players' average velocity of movement during the active phase of the game was 1.86 m/s. Although the players from one of the teams moved slightly faster and covered a greater distance, the differences between the teams in terms of the average velocity and covered distance were not statistically significant.
Key words:  basketball player tracking, computer vision
ANALIZA POKRETA KOŠARKAŠA U PLEJ OFU SLOVENAČKE KOŠARKAŠKE LIGE KORIŠĆENJEM SAGIT SISTEMA PRAĆENJA
Glavni cilj ovog rada je da predstavi SAGIT sistem za merenje i da utvrdi pređenu razdaljinu i posečnu brzinu pokreta košarkaša korišćenjem gore pomenutog sistema. SAGIT sistem je relativno nova tehnologija koja se bazira na metodama kompjuterskog pogleda i omogućuje automatsko prikupljanje podataka korišćenjem video zapisa igara. Ovaj sistem je korišćen da prati pokrete 23 košarkaša iz dva tima tokom tri utakmice plejofa Slovenačkog Nacionalnog Prvenstva za muškarce. Utvrđeno je da su tokom 40 minuta aktivne faze igre igrači u proseku prešli razdaljinu od 4,404 metara, i da su tokom pasivne faze prešli dodatnih 1,831 metara. Prosečna brzina pokreta igrača tokom aktivne faze igre bila je 1.86m/s. Iako su se igrači jednog od timova kretali brže i prešli veću razdaljinu, razlika između timova u smislu prosečne brzine i razdaljine koja je pređena nije statistički značajna.
Ključne reči: praćenje košarkaša, kompjuterski pogled