Kinect-based auxiliary training system for basic badminton movements

A Kinect-based auxiliary training system for basic badminton movements, comprising:

• a data collection module;
• a movement feature extraction and recognition module;
• and
• a movement standard degree analysis and guidance module;
• wherein the data collection module is provided with a Kinect v2 somatosensory device for monitoring an athlete in real time, and collecting three-dimensional coordinate data from 25 joint points of a whole body of the athlete;
• wherein the athlete is a coach or a user to be tested;
• the movement feature extraction and recognition module is provided for extracting and recognizing movement data of the coach to establish a standard template;
• and extracting and recognizing movement data of the user to be tested, thereby obtaining a similarity between the movement data of the user to be tested and the movement data in the standard template;
• wherein a process of establishing the standard template comprises:
• extracting an included angle feature of key bones of effective joint points involved in each category of movements according to requirements of badminton movement rules;
• and
• establishing a movement feature set of each category of movements, thereby constructing the standard template of the movement feature set of all categories of movements;
• a process of extracting and recognizing the movement data of the user to be tested comprises:
• extracting included angle features of all bones involved in the 25 joint points of the user to be tested to form a feature vector to be measured;
• and
• obtaining an Euclidean distance between the feature vector to be measured and the movement feature set in the standard template, to identify the similarity between the movements of the user to be tested and each category of movements in the standard template;
• the movement standard degree analysis and guidance module is provided for determining a category of a current movement of the user to be tested according to the similarity between the movements of the user to be tested and each category of movements in the standard template, and further analyzing whether the current movement of the user to be tested meets a standard according to a threshold range of a bone included angle set by a technology evaluation rule of the category of current movement.