Single Camera Motion Trajectory Calculation for Virtual Golf
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional virtual golf systems require multiple synchronized cameras to accurately calculate the motion trajectory of a golf ball, leading to synchronization failures and increased costs, while single-camera techniques often result in large measurement errors.
Innovation Solution
A method using a single camera to calculate the motion trajectory by acquiring at least three images and determining positions based on projections from the camera to the background, allowing for accurate trajectory calculation through virtual lines and image acquisition intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple synchronized cameras are used to calculate motion trajectory, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts the trajectory calculation function from a multi-camera system and implements it using a single camera. By removing the need for multiple cameras and their synchronization systems, the invention maintains measurement precision while eliminating device complexity related to synchronization
Solution Approach 2:
The patent uses a single camera to capture multiple images at different time points, effectively copying the trajectory information that would otherwise require simultaneous capture by multiple cameras. This temporal copying approach replaces spatial multi-camera configuration
2Measurement precision
If multiple synchronized cameras are used to calculate motion trajectory, then measurement precision is improved, but cost increases
Solution Approach 1:
The patent replaces expensive multi-camera synchronization systems with a single, more affordable camera that captures sequential images. This substitution uses a simpler, less costly device to achieve the same measurement precision for trajectory calculation
3Device complexity
If a single camera is used to calculate motion trajectory, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent captures multiple images at predetermined time intervals before the subject completes its motion. By preliminarily capturing positional information at different time points, the system enables accurate trajectory reconstruction through post-processing of these sequential images
Solution Approach 2:
The patent transitions from spatial multi-camera configuration to temporal multi-image capture. By adding the time dimension to a single camera system, it captures the same trajectory information that would otherwise require spatial distribution across multiple cameras
4Ease of operation
If multiple cameras are used without perfect synchronization, then ease of operation is improved, but measurement precision deteriorates
Solution Approach 1:
Instead of synchronizing multiple cameras simultaneously, the patent inverts the approach by using a single camera to capture images sequentially at different time points. This reversal of the temporal-spatial relationship eliminates synchronization requirements while maintaining measurement accuracy
Data Source
AI summary
The present invention relates to a method, system, and non-transitory computer-readable recording medium for calculating a motion trajectory of a subject. According to one aspect of the invention, there is provided a method for calculating a motion trajectory of a subject, the method comprising the steps of: acquiring at least three images of a subject using one imaging module; and calculating a motion trajectory of the subject with reference to the at least three acquired images, on the basis of each of at least three positions determined by a projection from a viewpoint of the imaging module to the subject on a background, and at least three virtual lines passing through a position where the imaging module is disposed.