Golf Ball Spin Detection Using Image Analysis
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Solution Overview
Problem
Existing technologies for detecting the spin of a golf ball in motion are costly and inefficient, making it difficult to accurately detect spin without expensive equipment.
Innovation Solution
A method for detecting the spin of a golf ball in motion using image acquisition, identification information extraction, and cumulative spin data analysis, which determines an estimated spin and applies it to the identification information to detect the spin without expensive equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If expensive sensors are used to detect the spin of a golf ball, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces expensive mechanical/optical sensors with a camera-based imaging system that captures visual data of the golf ball flight. The spin detection is achieved through image processing algorithms that analyze the ball's visual characteristics across multiple frames, substituting complex sensing hardware with a more accessible imaging approach.
Solution Approach 2:
The system creates a visual copy or representation of the golf ball's flight trajectory by capturing images at different time points. By analyzing the sequence of visual copies (images) of the ball's position and orientation, the system can infer spin characteristics without directly measuring them with specialized sensors.
2Measurement precision
If multiple sensing means are used to detect physical state of the ball, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The camera system serves multiple functions: it tracks the ball's position, determines its orientation, and infers spin characteristics from the same imaging device. This multi-functional approach eliminates the need for separate sensors for each measurement parameter, reducing overall system complexity while maintaining detection accuracy.
Solution Approach 2:
The system changes the measurement parameters from direct physical sensing to visual image analysis. By capturing images at different time points and analyzing changes in visual parameters (position, orientation, appearance), the system derives spin information through parameter transformation rather than direct measurement.
Data Source
AI summary
Disclosed in a method for detecting the spin of a ball in motion, a virtual golf device and a virtual golf system using the same. The method for detecting the spin of the ball in motion comprises an image acquisition step of acquiring a first image of the ball at a first time and acquiring a second image of the ball at a second time, the ball being in motion with spin and having an identifier, an identification information acquisition step of acquiring first identification information of the identifier from the first image and acquiring second identification information of the identifier from the second image, and a spin detection step of determining an estimated spin by using cumulative spin data, and applying the estimated spin to the first and second identifier information to detect the spin of the ball in motion.