Automated Baseball Umpiring with 3D Ball and Bat Tracking
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Solution Overview
Problem
Existing baseball umpiring systems struggle to accurately call strikes, balls, check swings, and foul tips due to the complexity and subjectivity of these judgments, which are difficult for human umpires to execute with near-perfect accuracy.
Innovation Solution
A system utilizing computer vision and multiple cameras to track the location of a ball and batter's bat in three-dimensional space, autonomously determining whether a strike or ball occurred by analyzing intersections and swing attempts, with audio input for foul tips, providing automated or assisted umpiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If human umpires manually call strikes and balls, then the system is simple and cost-effective, but the accuracy and consistency of judgment deteriorates due to subjectivity and difficulty in executing near-perfect accuracy
Solution Approach 1:
The patent replaces the mechanical manual judgment system with an automated computer vision system. Multiple cameras capture video images of the ball and batter, and image processing algorithms automatically determine strike zone locations and track ball trajectories to make objective calls, eliminating human subjectivity while maintaining system simplicity through software-based processing
Solution Approach 2:
The patent introduces an intermediary image processing system that mediates between the raw video data from cameras and the final umpiring calls. This intermediary layer processes visual information through automated algorithms to determine strike zones, track ball paths, and make consistent judgments without direct human intervention in the critical decision-making process
2Measurement precision
If multiple cameras and computer vision are used to track ball and bat in 3D space, then the accuracy of strike determination improves, but the device complexity and cost increases
Solution Approach 1:
The patent segments the umpiring task into independent functional modules: multiple cameras capture specific views of the ball trajectory and batter stance, image processing separately determines strike zone boundaries, tracks ball position, and analyzes bat swing geometry. This modular approach enables precise 3D analysis while managing system complexity through specialized sub-systems
Solution Approach 2:
The patent transitions from 2D camera images to 3D spatial analysis by processing visual data through multiple viewing angles and depth information. The system reconstructs the ball's three-dimensional trajectory and the batter's swing motion in 3D space, enabling precise determination of whether the ball intersects the strike zone or whether a genuine swing attempt occurred
3Productivity
If automated systems make real-time calls, then productivity and decision speed improve, but reliability may worsen due to potential errors in autonomous determination
Solution Approach 1:
The patent implements feedback mechanisms where the system continuously monitors ball position, swing motion, and strike zone boundaries in real-time. The image processing algorithms analyze each frame of video data, compare it against established criteria for strikes and balls, and provide immediate feedback calls. This real-time feedback loop enables rapid decision-making while maintaining high reliability through consistent application of objective computational criteria
Data Source
AI summary
Methods and systems for use in automating or assisting umpiring of a baseball or softball game are described herein. A location of a strike zone is determined based on video images of a batter standing next to home plate captured by a camera. Locations of a ball traveling towards the batter, and locations of the bat being held by the batter, are autonomously tracked using computer vision based on video images captured by at least two cameras having different positions. Additionally, there are autonomous determinations of whether a location of the ball intersects with the strike zone, and whether the batter made a genuine attempt to swing the bat at the ball, and based one at least one of these determinations, there is an autonomous determination of whether a “strike” or a “ball” occurred. Additionally, an indication of whether a “strike” or a “ball” occurred is autonomously output.