TY  - JOUR
PY  - 2010//
TI  - Capturing complex human behaviors in representative sports contexts with a single camera
JO  - Medicina (Lithuania)
A1  - Duarte, Ricardo
A1  - Araújo, Duarte
A1  - Fernandes, Orlando
A1  - Fonseca, Cristina
A1  - Correia, Vanda
A1  - Gazimba, Vítor
A1  - Travassos, Bruno
A1  - Esteves, Pedro
A1  - Vilar, Luís
A1  - Lopes, José
SP  - 408
EP  - 414
VL  - 46
IS  - 6
N2  - BACKGROUND AND OBJECTIVE: In the last years, several motion analysis methods have been developed without considering representative contexts for sports performance. The purpose of this paper was to explain and underscore a straightforward method to measure human behavior in these contexts. MATERIAL AND METHODS: Procedures combining manual video tracking (with TACTO device) and bidimensional reconstruction (through direct linear transformation) using a single camera were used in order to capture kinematic data required to compute collective variable(s) and control parameter(s). These procedures were applied to a 1vs1 association football [soccer] task as an illustrative subphase of team sports and will be presented in a tutorial fashion. <br><br>RESULTS: Preliminary analysis of distance and velocity data identified a collective variable (difference between the distance of the attacker and the defender to a target defensive area) and two nested control parameters (interpersonal distance and relative velocity). <br><br>CONCLUSIONS: Findings demonstrated that the complementary use of TACTO software and direct linear transformation permit to capture and reconstruct complex human actions in their context in a low dimensional space (information reduction).<p />  <p>Language: en</p>
LA  - en
SN  - 1010-660X
UR  - http://dx.doi.org/
ID  - ref1
ER  -