@article{ref1,
title="Capturing complex human behaviors in representative sports contexts with a single camera",
journal="Medicina (Lithuania)",
year="2010",
author="Duarte, Ricardo and Araújo, Duarte and Fernandes, Orlando and Fonseca, Cristina and Correia, Vanda and Gazimba, Vítor and Travassos, Bruno and Esteves, Pedro and Vilar, Luís and Lopes, José",
volume="46",
number="6",
pages="408-414",
abstract="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>",
language="en",
issn="1010-660X",
doi="",
url="http://dx.doi.org/"
}