CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, 1495-751 Cruz Quebrada, Portugal.
Complex Systems in Sport Research Group, Institut Nacional d'Educacio Fisica de Catalunya (INEFC), University of Lleida (UdL), 25192 Lleida, Spain.
Sensors (Basel). 2023 Apr 24;23(9):4244. doi: 10.3390/s23094244.
The purpose of the present study was to create a two-dimensional model which illustrates a landscape of shooting opportunities at goal during a competitive football match. For that purpose, we analysed exemplar attacking subphases of each team when the ball was in the last 30 m of the field. The player's positional data (x and y coordinates) and the ball were captured at 25 fps and processed to create heatmaps that illustrated the shooting opportunities that were available in the first and second half in different field areas. Moreover, the time that the shooting opportunities were available was estimated. Results show that in the observed match, most of the shooting opportunities lasted between 1 and 2 s, with only a few opportunities lasting more than 2 s. The shooting opportunities did not display a homogenous distribution over the field. The obtained heatmaps provide valuable and specific information about each team's shooting opportunities, allowing the identification of the most vulnerable areas. Additionally, the amount, duration, and location of the shooting opportunities have shown significant differences between teams. This customizable model is sensitive to the features of shooting opportunities and can be used in real-time video analysis for individual and collective performance analysis.
本研究的目的是创建一个二维模型，展示在一场有竞争力的足球比赛中，射门机会的全景。为此，我们分析了每个球队在球进入场地最后 30 米时的典型攻击子阶段。球员的位置数据（x 和 y 坐标）和球以 25 帧/秒的速度被捕获，并进行处理，以创建热图，展示在不同的场地区域中，上半场和下半场可用的射门机会。此外，还估计了可用射门机会的时间。结果表明，在观察到的比赛中，大多数射门机会持续 1 到 2 秒，只有少数射门机会持续超过 2 秒。射门机会在场上的分布不均匀。获得的热图提供了有关每个球队射门机会的有价值和具体信息，允许识别最脆弱的区域。此外，射门机会的数量、持续时间和位置在球队之间存在显著差异。这个可定制的模型对射门机会的特征很敏感，可以用于实时视频分析，用于个人和集体表现分析。
