Golf Ball Spin Measurement Using Flight Parameters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing virtual golf systems face challenges in accurately measuring ball spin when the mark on the golf ball is erased or difficult to recognize, leading to errors in calculation.
Innovation Solution
A method and system that detect information on a mark in images of a golf ball, determining if direct spin calculation is possible, and if not, estimate spin based on the speed and angle of the golf ball or club, using a mark information acquisition unit, physical quantity information provision unit, and control unit to correct errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If spin is calculated based on mark information from images, then measurement precision is improved, but reliability deteriorates when the mark is erased or difficult to recognize
Solution Approach 1:
The patent introduces an intermediary estimation method using ball flight parameters (trajectory, speed, angle) as a mediator when direct mark-based measurement fails. The system first attempts direct mark-based spin calculation, and when the mark is erased or unrecognizable, it switches to estimating spin from ball flight characteristics, ensuring continuous and reliable spin measurement regardless of mark condition
Solution Approach 2:
The patent changes the measurement parameters from relying solely on mark information to using ball flight parameters (trajectory, speed, angle) when mark-based measurement is unreliable. This parameter substitution allows the system to maintain spin measurement capability under varying conditions by switching between different parameter sets based on their availability and reliability
2Device complexity
If a single mark-based method is used for spin calculation, then device complexity is reduced, but adaptability deteriorates when marks are erased
Solution Approach 1:
The patent implements a dynamic measurement system that can switch between different spin determination methods based on real-time conditions. The system dynamically selects between mark-based calculation and ball flight parameter estimation, adapting its operation mode according to whether the mark is visible and recognizable, thereby maintaining versatility without requiring multiple dedicated systems
Solution Approach 2:
The patent creates a universal spin measurement system that can perform both mark-based calculation and ball flight parameter estimation. This multi-functional approach allows a single system to handle various scenarios (visible mark, erased mark, partial mark) using different methods, enhancing adaptability while keeping the overall system architecture unified
Data Source
AI summary
According to one aspect of the invention, there is provided a method for measuring ball spin, the method comprising the steps of: detecting information on a mark appearing in a region corresponding to a ball hit by a user in each of a plurality of images in which the ball is photographed; determining whether it is possible to directly calculate physical quantities related to spin of the ball on the basis of the information on the mark; and when it is determined that it is not possible to directly calculate the physical quantities related to spin of the ball on the basis of the information on the mark, estimating the physical quantities related to spin of the ball on the basis of physical quantities related to at least one of a speed and an angle of the ball or a club hitting the ball.