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Showing posts from June, 2020

BJJ Scoreboard Analysis with Computer Vision

We’re back at it with a brand new Brazilian Jiu Jitsu data collection process to lend more insights into how matches were scored and trends at the 2019 World Championships. This time, we used computer vision techniques such as video event detection and optical character recognition to help us collect the points scored in matches and the exact time each score occurred. This blog is part of a larger project where my Crazy 88 teammate, Ashar Nadeem , and I are using a variety of data science tools to collect match data for BJJ. In this blog, we used 87 match videos posted on the International Brazilian Jiu Jitsu Federation YouTube channel from the 2019 World Championships. The matches included black belt male and female Quarterfinal, Semifinal, and Finals matches, arguably the most high stress and meaningful matches of the tournament. This portion of the project was limited to score detection—the points scored and the exact time a score happened—by analyzing a change in the number