Stereo Camera Impact Motion Recognition for Multi-Sport Coaching
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Solution Overview
Problem
Existing impact motion analysis technologies for screen-based sports coaching face difficulties in attaching sensors to the human body or tools and in adapting to different sports, limiting their application in multi-sport coaching.
Innovation Solution
An impact motion recognition system utilizing a high-speed stereo camera to detect and analyze the 3D motion information of moving and hitting bodies through image acquisition, object detection, moving body recognition, hitting body detection, and motion analysis, without the need for attachable or floor sensors, allowing for the recognition and analysis of impact motions across various sports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If attachable sensors or floor sensors are used for impact motion analysis, then measurement precision is improved, but device complexity and ease of operation deteriorate due to the need to attach or install separate sensors
Solution Approach 1:
The patent merges the impact motion detection function into the existing screen-based multi-sport system by integrating an image processing unit that analyzes video footage from existing cameras. This eliminates the need for separate attachable or floor-mounted sensors, reducing device complexity while maintaining measurement precision through advanced image processing algorithms that detect impact moments and calculate motion parameters.
Solution Approach 2:
The patent replaces mechanical sensor attachment systems with an optical-based image processing system. Instead of using physical sensors that require attachment to clubs or installation on floors, the system uses computer vision technology to detect impact motions by analyzing video sequences, thereby eliminating mechanical complexity while preserving measurement accuracy.
2Measurement precision
If different sensors are attached for each sport type, then measurement precision is improved, but adaptability deteriorates due to the need for separate sensor configurations
Solution Approach 1:
The patent implements a universal image processing system that can analyze impact motions across multiple sports (golf, baseball, tennis, soccer, etc.) using a single integrated platform. The system processes video footage from existing cameras and applies sport-specific analysis algorithms automatically, eliminating the need to attach different sensors for each sport while maintaining measurement precision through specialized processing for each sport type.
3Measurement precision
If attachable sensors are used on tools or human body, then measurement precision is improved, but ease of operation deteriorates due to attachment requirements
Solution Approach 1:
The patent enables the system to automatically perform impact motion analysis without requiring user intervention for sensor attachment or configuration. The image processing unit automatically detects objects, tracks their motion, identifies impact moments, and calculates relevant parameters from video footage, making the system easy to operate while maintaining high measurement precision through automated computer vision algorithms.
Data Source
AI summary
Provided is an impact motion recognition system for screen-based multi-sport coaching. The impact motion recognition system for screen-based multi-sport coaching includes: a high-speed stereo camera device installed on an upper end of a target object including a hitting body and an moving body and configured to acquire a stereo image sequence in which the hitting body and the moving body are photographed; an object detection unit configured to detect an object in the acquired stereo image sequence; a moving body recognition unit configured to identify whether an impact motion has occurred in the detected object to recognize the moving body; a hitting body detection unit configured to, based on the moving body being recognized through the moving body recognition unit, detect the object excluding the moving body as the hitting body; a target object tracking unit configured to continuously detect a center point of the moving body and a feature point of the hitting body in a subsequent stereo image sequence using characteristics of the moving body and the hitting body that are detected, and continuously track the center point of the moving body and the feature point of the hitting body until the center point of the moving body and the feature point of the hitting body are not detected; and a motion analysis unit configured to analyze three-dimensional (3D) motion information of the target object using the center point of the moving body and the feature point of the hitting body, which are detected through the target object tracking unit, and high-speed stereo camera correction data.