Motion Capture and Intelligent Correction Method of Badminton Movement Based on Machine Vision

Table 1

Comparison of common capture systems.

System name	Composition	Advantages	Disadvantages
Mechanical	Joints with sensors and rigid links	Low cost, high accuracy, good real-time performance, small limitations, multiobject capture	Inconvenient operation, restrictions on performers’ movement
Acoustic	Acoustic emission source, receiving equipment, and processing module	Low price, effectively solving the problem of motion occlusion	Low accuracy and susceptible to interference
Electromagnetic	Electromagnetic transmitter, receiving and sensing equipment, and data processing module	Low price, good real-time performance, fast speed, mature technology	Strict environmental requirements and low sampling rate
Optical motion capture	High-precision camera, marking point, and data processing unit	The marking point is cheap, easy to use, and limited in movement and has high sampling rate	The entire system is expensive and has a large amount of postprocessing, and the marking points are easily obstructed
Video-based motion capture	Camera and data processing unit	There are no restrictions on the captured objects, low cost, and low environmental requirements	The algorithm is complex and difficult to implement, and the technology is not yet perfect