MIXI entered the sports sector in 2019 and has been pushing AI technology forward in the sports world since then. Examples include the automation of race video editing for publicly-managed betting sports and the development of auto-tracking camera systems using positioning and image analysis technologies.In December 2024, we began collaborating with Playbox Inc. on research and development to build an analytical platform that leverages data such as tracking and event detection, in addition to AI analysis of sports footage.

High-precision automatic estimation of GSR in soccer matches

Game State Reconstruction (GSR), a technology that automatically identifies the roles and positional information of players, referees, and others from soccer match footage, is extremely important for tactical analysis and play evaluation. Achieving such technology requires the integration of multiple AI techniques, including detecting the field and players, distinguishing between players, tracking, and estimating positional relationships. Each of these techniques must be refined to reach practical application.

In collaboration with Playbox Inc., we have succeeded in delivering a substantial improvement in accuracy beyond conventional methods. This was made possible by combining advanced deep learning models, geometric reasoning (camera calibration),and heuristic optimization that leverages knowledge of soccer rules and player characteristics (e.g., goalkeepers typically remain near the goal).

Achieved fourth place at the world-leading international conference CVPR 2025

Based on our research achievements, MIXI and Playbox Inc. formed a joint team to participate in the SoccerNet Challenge (Game State Reconstruction) at CVPR 2025, one of the worldʼs foremost international conferences in AI and computer vision. The team received worldwide recognition by securing fourth place.

The knowledge and technologies gained through this initiative can be applied to tactical analysis, training, and enhancing the fan experience in sports. Going forward, we will advance research and development toward more sophisticated analytical technologies and, through AI-driven innovation unique to MIXI, create new value in communication.