Optical Player Tracking in Sports Venues
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Solution Overview
Problem
Current player tracking systems for sporting events are too expensive and require excessive equipment, making high-quality automated video broadcasting unaffordable for lower-level leagues, and they lack human intervention for optimal viewing angles.
Innovation Solution
A method and system that divide a venue into zones of interest, use fixed tracking cameras to optically track players, perform cluster analysis to identify player groups, and adjust a broadcast camera's pan, tilt, or zoom in real-time based on player activity to capture high-quality video without human intervention, reducing equipment costs and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If multiple tracking cameras and embedded tracking devices are used to automatically track players, then automated player tracking capability is improved, but system cost and complexity increase
Solution Approach 1:
The patent extracts the tracking function from multiple complex cameras and embedded devices, consolidating it into a single overhead camera system that captures the entire playing area. This eliminates the need for multiple tracking cameras and embedded tracking devices while maintaining automated tracking capability.
Solution Approach 2:
The single overhead camera serves multiple functions: it tracks player positions, determines gameplay scenarios, and provides broadcast footage. This multi-functional approach replaces the need for specialized tracking cameras and embedded devices, reducing system complexity while maintaining automation.
2Extent of automation
If multiple tracking cameras and embedded tracking devices are deployed, then automated player tracking is achieved, but equipment cost increases
Solution Approach 1:
The patent merges the functions of multiple tracking cameras and embedded tracking devices into a single overhead camera system. This consolidation reduces equipment quantity and cost while maintaining automated tracking capability through centralized image processing.
Solution Approach 2:
The system uses image processing algorithms to create virtual tracking data from the single camera feed, effectively copying the functionality of multiple physical tracking devices without the associated cost. The processing system generates player position information computationally rather than requiring multiple physical sensors.
3Quantity of substance
If a single camera is used to capture the entire playing area, then equipment cost is reduced, but measurement precision of player positions deteriorates
Solution Approach 1:
The patent transitions from 2D camera views to 3D spatial reconstruction by processing images from the overhead camera at multiple angles and depths. This dimensional transformation enables precise player position determination despite using a single camera, as the system calculates three-dimensional coordinates from two-dimensional image data.
Solution Approach 2:
The system performs preliminary calibration and mapping of the playing area before actual tracking begins. By pre-establishing the geometric relationships and camera parameters, the system compensates for the limitations of a single camera viewpoint, enabling accurate position measurement without requiring multiple cameras.
4Device complexity
If fixed cameras are used to capture gameplay, then equipment complexity is reduced, but adaptability to different gameplay scenarios deteriorates
Solution Approach 1:
The patent implements dynamic scenario-based control that automatically adjusts camera positioning and viewing angles based on real-time gameplay analysis. The system transitions between different predefined scenarios (e.g., offensive, defensive, face-off) and dynamically positions the camera to optimize the broadcast view, providing adaptability without complex equipment.
Solution Approach 2:
The system continuously monitors player positions and gameplay dynamics, using this feedback to automatically adjust camera positioning and scenario selection. This closed-loop control enables the fixed camera system to adapt to different gameplay scenarios in real-time, matching the versatility of manual operation while maintaining equipment simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables cost-effective, automated production of high-quality video broadcasts of sporting events with reduced equipment needs, providing optimal viewing angles without human intervention, thus making high-quality broadcasts accessible to all levels of sports.
Implementation Method 1
optically tracking individual players in the venue by determining respective positions of the individual players within the zones of interest using at least one fixed tracking camera
Data Source
AI summary
A system and method optically track players and automatically capture broadcastable video of a sporting event within a venue. The system includes at least one fixed tracking camera, a remote-controlled broadcast camera, and a scoreboard camera, with each of the components being in communication with a processing system. The method involves dividing the venue into zones of interest, optically tracking individual players in the zones of interest, identifying player groups in the zones of interest, determining a zone of interest containing the most players, analyzing player activity in the zone of interest with the most players, selecting a current gameplay scenario corresponding to the player activity from a set of predetermined gameplay scenarios, and adjusting the pan, tilt and zoom of a broadcast camera according to the current gameplay scenario.