New! Sign up for our free email newsletter.
Science News
from research organizations

Going top shelf with AI to better track hockey data

Waterloo researchers get an assist from AI in identifying hockey players with greater accuracy and speed

Date:
March 11, 2024
Source:
University of Waterloo
Summary:
Researchers got a valuable assist from artificial intelligence (AI) tools to help capture and analyze data from professional hockey games faster and more accurately than ever before, with big implications for the business of sports.
Share:
FULL STORY

Researchers from the University of Waterloo got a valuable assist from artificial intelligence (AI) tools to help capture and analyze data from professional hockey games faster and more accurately than ever before, with big implications for the business of sports.

The growing field of hockey analytics currently relies on the manual analysis of video footage from games. Professional hockey teams across the sport, notably in the National Hockey League (NHL), make important decisions regarding players' careers based on that information.

"The goal of our research is to interpret a hockey game through video more effectively and efficiently than a human," said Dr. David Clausi, a professor in Waterloo's Department of Systems Design Engineering. "One person cannot possibly document everything happening in a game."

Hockey players move fast in a non-linear fashion, dynamically skating across the ice in short shifts. Apart from numbers and last names on jerseys that are not always visible to the camera, uniforms aren't a robust tool to identify players -- particularly at the fast-paced speed hockey is known for. This makes manually tracking and analyzing each player during a game very difficult and prone to human error.

The AI tool developed by Clausi, Dr. John Zelek, a professor in Waterloo's Department of Systems Design Engineering, research assistant professor Yuhao Chen, and a team of graduate students use deep learning techniques to automate and improve player tracking analysis.

The research was undertaken in partnership with Stathletes, an Ontario-based professional hockey performance data and analytics company. Working through NHL broadcast video clips frame-by-frame, the research team manually annotated the teams, the players and the players' movements across the ice. They ran this data through a deep learning neural network to teach the system how to watch a game, compile information and produce accurate analyses and predictions.

When tested, the system's algorithms delivered high rates of accuracy. It scored 94.5 per cent for tracking players correctly, 97 per cent for identifying teams and 83 per cent for identifying individual players.

The research team is working to refine their prototype, but Stathletes is already using the system to annotate video footage of hockey games. The potential for commercialization goes beyond hockey. By retraining the system's components, it can be applied to other team sports such as soccer or field hockey.

"Our system can generate data for multiple purposes," Zelek said. "Coaches can use it to craft winning game strategies, team scouts can hunt for players, and statisticians can identify ways to give teams an extra edge on the rink or field. It really has the potential to transform the business of sport."


Story Source:

Materials provided by University of Waterloo. Note: Content may be edited for style and length.


Journal Reference:

  1. Kanav Vats, Pascale Walters, Mehrnaz Fani, David A. Clausi, John S. Zelek. Player tracking and identification in ice hockey. Expert Systems with Applications, 2023; 213: 119250 DOI: 10.1016/j.eswa.2022.119250

Cite This Page:

University of Waterloo. "Going top shelf with AI to better track hockey data." ScienceDaily. ScienceDaily, 11 March 2024. <www.sciencedaily.com/releases/2024/03/240311145909.htm>.
University of Waterloo. (2024, March 11). Going top shelf with AI to better track hockey data. ScienceDaily. Retrieved April 24, 2024 from www.sciencedaily.com/releases/2024/03/240311145909.htm
University of Waterloo. "Going top shelf with AI to better track hockey data." ScienceDaily. www.sciencedaily.com/releases/2024/03/240311145909.htm (accessed April 24, 2024).

Explore More

from ScienceDaily

RELATED STORIES