CN114618142A - Auxiliary training system and method for table tennis sports - Google Patents
Auxiliary training system and method for table tennis sports Download PDFInfo
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- CN114618142A CN114618142A CN202210429411.7A CN202210429411A CN114618142A CN 114618142 A CN114618142 A CN 114618142A CN 202210429411 A CN202210429411 A CN 202210429411A CN 114618142 A CN114618142 A CN 114618142A
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B67/00—Sporting games or accessories therefor, not provided for in groups A63B1/00 - A63B65/00
- A63B67/04—Table games physically beneficial for the human body, modelled on outdoor sports, e.g. table tennis
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/40—Stationarily-arranged devices for projecting balls or other bodies
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
- A63B71/0622—Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
- A63B71/0669—Score-keepers or score display devices
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
- A63B71/0622—Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
- A63B2071/0625—Emitting sound, noise or music
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
- A63B2071/0647—Visualisation of executed movements
Abstract
The invention provides an auxiliary training system for table tennis, which comprises: the system comprises an action monitoring module, an intelligent serve module, a training control module and a training data management platform; the action monitoring module is used for tracking and identifying the batting posture information, the position information and the table tennis position information of the training personnel and reconstructing the table tennis track information; the intelligent service module is used for adjusting service speed and direction through the service mechanism according to service parameters set by a user or simulated service data; the training control module is used for the user to select a training mode and input information of a training person, and displaying, broadcasting and reminding training data, training time and error times; the training data management platform is used for evaluating and analyzing the training state of the training personnel and outputting suggestion reports.
Description
Technical Field
The invention relates to the technical field of sports equipment, in particular to an auxiliary training system and method for table tennis.
Background
The table tennis is a common ball sports, and most of the current table tennis training processes adopt a mode of multi-person sparring to train various skills of the table tennis. And the sportsman needs long-time exercise batting technique when training, consequently, many intelligence table tennis training auxiliary assembly begin to appear, and current intelligence table tennis training auxiliary assembly exists service mode singleness, and the training degree of difficulty is lower scheduling problem, the unable training requirement that satisfies training personnel that is better.
In summary, how to overcome the above-mentioned drawbacks is a problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In order to solve the problems and requirements mentioned above, the present solution provides an auxiliary training system for table tennis sport, which can solve the technical problems mentioned above by adopting the following technical solutions.
In order to achieve the purpose, the invention provides the following technical scheme: an auxiliary training system for table tennis, comprising: the intelligent ball serving system comprises a motion monitoring module, an intelligent ball serving module, a training control module and a training data management platform;
the action monitoring module is used for tracking and identifying the batting posture information, the position information and the table tennis position information of the training personnel and reconstructing the table tennis track information;
the intelligent service module is used for adjusting service speed and direction through the service mechanism according to service parameters set by a user or simulated service data;
the motion monitoring module and the intelligent serve module are both connected with the training control module, and the training control module is used for a user to select a training mode, input information of a trainer, display training data and broadcast and remind training duration and error times;
the training data management platform is in communication connection with the training control module and is used for evaluating and analyzing the training state of the training personnel according to the uploaded training data and outputting a suggestion report.
Further, the action monitoring module comprises a personnel monitoring module and a table tennis monitoring module;
the personnel monitoring module is used for acquiring batting posture information and position information of training personnel, the personnel monitoring module comprises a first image acquisition module, an image processing module and a personnel posture identification module, the first image acquisition module is used for acquiring batting image data of the training personnel, the image processing module is connected with the first image acquisition module, the image processing module extracts human body motion action characteristics by adopting an SIFT characteristic extraction algorithm according to the acquired batting image data to acquire a human body characteristic extraction graph sequence, the personnel posture identification module establishes an appearance model of a human body limb according to the human body characteristic extraction graph sequence and a probability graph model, high-frequency denoising, expansion and binarization processing are carried out on each image data based on the acquired appearance model of the human body limb, and then a Canny edge detection operator is adopted to acquire an initial contour line, obtaining an external contour line through morphological closed operation, finally obtaining a target contour line of a first frame of human motion through a searching method, obtaining a residual contour line through a heuristic searching method, calculating the normal of a target contour point based on the contour line information of the obtained first frame of image, searching a plurality of points on each normal, calculating a gradient threshold value on each normal, retrieving the points in the normal direction to obtain a first point higher than the gradient threshold value as a new contour point of a current frame, and further finishing the accurate extraction of the human motion contour;
the table tennis monitoring module comprises a second image acquisition module and a track information analysis module, the second image acquisition module is used for acquiring the moving images of the table tennis by adopting a binocular high-definition camera, the track information analysis module is connected with the second image acquisition module and is used for carrying out distortion correction on the acquired image through stereo correction and converting the RGB image after distortion correction into HSV image, and the third channel of the image is equalized to enhance the contrast of the image, a background with the same color as the table tennis ball is screened out according to a preset contrast value, carrying out binarization and filtering processing on the image, then adopting a Canny edge detection operator to carry out coarse extraction on the screened background contour, and deleting the background which does not meet the conditions according to the set ping-pong ball outline area range, and finally extracting the center coordinates of the ping-pong ball according to the Hough circle detection algorithm.
Furthermore, the table tennis monitoring module further comprises a track reconstruction module, the track reconstruction module is connected with the track information analysis module, and the track reconstruction module reconstructs the track of the table tennis based on a track reconstruction algorithm according to matching information of center coordinates of the table tennis of adjacent frames and coordinate conversion data;
the process of reconstructing the track of the table tennis based on the track reconstruction algorithm is as follows:
matching the center of a table tennis ball on a time sequence according to the coordinate difference value of the centers of the table tennis balls in the adjacent front and back frame images;
converting an image coordinate system into a world coordinate system by taking a certain camera in a binocular camera as an origin of the world coordinate system, acquiring spatial positions of feature points corresponding to the circle center of the table tennis ball in the world coordinate system, and acquiring a motion trail of the table tennis ball based on a plurality of spatial position information;
and calculating the speed and the acceleration of the table tennis at different moments to complete the three-dimensional motion reconstruction of the table tennis.
Furthermore, the intelligent service module comprises a simulation service module, a service parameter setting module and a service mechanism;
the simulated service module comprises a ping-pong video input module and a service parameter analysis module, the service video input module is used for acquiring ping-pong video information input by a user, and performing format screening and conversion on the ping-pong video information to obtain standard ping-pong video information, the standard ping-pong video information is transmitted to the service parameter analysis module, the service parameter analysis module is connected with the ping-pong monitoring module, the service parameter analysis module converts the standard ping-pong video information into a sequence image and transmits the sequence image to the ping-pong monitoring module, the ping-pong monitoring module dynamically reconstructs a ping-pong track, and feeds the service parameter acquired by reconstruction back to the service parameter setting module;
the serve parameter setting module is connected with the training control module and is used for acquiring serve parameter information of a user according to training mode information output by the training control module;
the service mechanism is in communication connection with the simulation service unit and the service parameter setting module, and is used for sending table tennis balls based on the obtained service parameters, wherein the service parameters comprise service speed, rotation speed, service frequency and service initial angle.
Furthermore, the ball serving mechanism comprises a ball serving device, an angle detector and a driving module; the ball serving device comprises a rotating mechanism, a launching tube and a motion base, wherein the rotating mechanism is arranged and connected with the launching tube, the rotating mechanism and the launching tube are arranged on the motion base, an angle detector is arranged on the launching tube and connected with a driving module, the angle detector transmits detected angle change information to the driving module, and the driving module is used for driving the motion base to change the pitching angle of the launching tube and the horizontal height and position of the ball serving device.
Furthermore, the training control module comprises a triggering module, an interactive display module and a personnel information input module;
the trigger module comprises a power supply control module and a mode selection module, the power supply control module comprises a power supply trigger module and a power supply device, the power supply trigger module receives a trigger signal, effectively confirms the trigger signal and transmits the effective trigger signal to the power supply device, the power supply device is used for providing a required voltage source for each module in the system, the mode selection module comprises a plurality of selection keys, a user selects a training mode through the plurality of selection keys, and the training mode comprises a common mode and a custom mode;
the interactive display module is connected with the trigger module and the personnel information input module;
the personnel information input module comprises an identity card scanning module and a fingerprint verification module, the identity card scanning module comprises an image scanning device and a confirmation signal output module, the image scanning device is used for acquiring identity card image information and face image information, identifying training personnel identity information on an identity card, updating training times in a database according to the identified identity information, outputting a confirmation signal to the fingerprint verification module through the confirmation signal output module after the updating is finished, the fingerprint verification module comprises an indicator lamp group, a fingerprint input module and a fingerprint identification module, reminding a user to input fingerprint information through the indicator lamp group, the fingerprint input module transmits the input fingerprint image information to the fingerprint identification module, the fingerprint identification module acquires fingerprint characteristic information according to the fingerprint image information and compares the fingerprint characteristic information with the fingerprint characteristic information in the user database, and if the training personnel are consistent, judging that the current training personnel are legal users.
Further, the interactive display module comprises a communication module, a main controller module, a metering module and a multifunctional reminding module, wherein the communication module is connected with the main controller module, the communication module is used for uploading monitoring information to the training data management platform, the main controller module is used for transmitting mode selection information and identity verification information of a user to the intelligent service module and receiving the monitoring information of the action monitoring module and feedback information of the intelligent service module, the metering module and the multifunctional reminding module are connected with the main controller module, the metering module is used for recording service quantity and training duration, and the multifunctional reminding module is used for displaying and reminding service quantity and training duration.
Furthermore, the training data management platform comprises a data storage module, a data analysis module and a correction report module, wherein the data storage module is used for storing training monitoring information and correction reports of training personnel uploaded by the communication module, the data analysis module is connected with the data storage module, the data analysis module is used for analyzing the training monitoring information to obtain trajectory data of a faulty ball and batting posture information and position information of the training personnel when the missed ball is picked up, and the correction report module is used for obtaining corrected batting position and batting angle range information according to the trajectory data of the faulty ball and forming a correction report to be stored in the data storage module.
The utility model provides an auxiliary training method for table tennis, adopts foretell auxiliary training system for table tennis, specifically includes:
s1, receiving the effective trigger signal of the user and the training mode information selected by the user, and identifying and inputting the identity information of the user;
s2, adjusting the serve speed and direction through a serve mechanism according to serve parameters or simulated serve data set by a user;
s3, tracking and identifying the hitting posture information, the position information and the table tennis position information of the trainee, reconstructing the table tennis track information, and obtaining training data according to the reconstruction result;
s4, displaying and broadcasting the training data, the training time and the error times, and uploading the training data, the training time and the error times to a training data management platform;
and S5, evaluating and analyzing the training state of the training personnel according to the uploaded training data, the training duration and the error times, and outputting a suggestion report.
According to the technical scheme, the invention has the beneficial effects that: the invention has high intelligent degree, can adjust the service parameters according to the requirements of users, rebuilds the motion track of the table tennis and gives suggestions aiming at the batting actions of training personnel.
In addition to the above objects, features and advantages, preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings so that the features and advantages of the present invention can be easily understood.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly described, wherein the drawings are only used for illustrating some embodiments of the present invention and do not limit all embodiments of the present invention thereto.
Fig. 1 is a schematic structural diagram of the auxiliary training system for table tennis sports.
Fig. 2 is a schematic structural diagram of the motion monitoring module according to the present invention.
Fig. 3 is a schematic view of the structure of the intelligent service module according to the present invention.
Fig. 4 is a schematic diagram of the structure of the training control module according to the present invention.
Fig. 5 is a schematic step diagram of an auxiliary training system for table tennis in the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
The invention provides an auxiliary training system for table tennis, which can adjust serving parameters according to user requirements, reconstruct the motion track of table tennis and give suggestions for the hitting actions of training personnel.
As shown in fig. 1 to 4, the system includes: the system comprises an action monitoring module, an intelligent serve module, a training control module and a training data management platform.
The action monitoring module is used for tracking and identifying the batting posture information, the position information and the table tennis position information of the training personnel and reconstructing the table tennis track information.
Specifically, action monitoring module includes personnel monitoring module and table tennis monitoring module, personnel monitoring module is used for acquireing training personnel's batting gesture information and positional information, personnel monitoring module includes first image acquisition module, image processing module and personnel gesture recognition module, first image acquisition module is used for acquireing training personnel's batting image data, and first image acquisition module is acquireed by image acquisition equipment such as high definition high speed camera and intelligent cloud platform. The image processing module is connected with the first image acquisition module, and the image processing module performs image processing as follows:
a. extracting human motion action features by adopting an SIFT feature extraction algorithm according to the acquired shot image data to acquire a human feature extraction graph sequence; b. the personnel posture identification module establishes an appearance model of the human body limb according to the human body characteristic extraction image sequence and the probability image model, and carries out high-frequency denoising, expansion and binarization processing on each image data based on the acquired appearance model of the human body limb; c. acquiring an initial contour line by adopting a Canny edge detection operator, acquiring an external contour line by morphological closed operation, acquiring a target contour line of a first frame of human motion by adopting a search method, and acquiring a residual contour line by adopting a heuristic search method; d. calculating the normal of a target contour point based on the acquired contour line information of the first frame image, searching a plurality of points on each normal, calculating a gradient threshold value on each normal, searching the points in the normal direction to obtain a first point higher than the gradient threshold value as a new contour point of the current frame, and further finishing the accurate extraction of the human motion contour. The table tennis monitoring module comprises a second image acquisition module and a track information analysis module, the second image acquisition module is used for acquiring the moving image of the table tennis by adopting a binocular high-definition camera, the track information analysis module is connected with the second image acquisition module and is used for carrying out distortion correction on the acquired image through stereo correction and converting the RGB image after distortion correction into HSV image, and the third channel of the image is equalized to enhance the contrast of the image, the background with the same color as the ping-pong ball is screened out according to the preset contrast value, carrying out binarization and filtering processing on the image, then adopting a Canny edge detection operator to carry out coarse extraction on the screened background contour, and deleting the background which does not meet the conditions according to the set ping-pong ball outline area range, and finally extracting the center coordinates of the ping-pong ball according to the Hough circle detection algorithm.
More specifically, the table tennis monitoring module further comprises a track reconstruction module, the track reconstruction module is connected with the track information analysis module, and the track reconstruction module reconstructs the track of the table tennis based on a track reconstruction algorithm according to matching information of center coordinates of the table tennis of adjacent frames and coordinate conversion data;
the process of reconstructing the track of the table tennis based on the track reconstruction algorithm is as follows:
matching the center of a table tennis ball on a time sequence according to the coordinate difference value of the centers of the table tennis balls in adjacent front and back frame images;
converting the image coordinate system into a world coordinate system by taking a certain camera in a binocular camera as the origin of the world coordinate system, acquiring the spatial position of a characteristic point corresponding to the center of a table tennis ball in the world coordinate system, and acquiring the motion trail of the table tennis ball based on a plurality of spatial position information;
and c, calculating the speed and the acceleration of the table tennis at different moments to complete the three-dimensional motion reconstruction of the table tennis.
The intelligent service module is used for adjusting service speed and direction through the service mechanism according to service parameters set by a user or simulated service data.
The intelligent service module comprises a simulation service module, a service parameter setting module and a service mechanism; the simulated service module comprises a ping-pong video input module and a service parameter analysis module, the service video input module is used for acquiring ping-pong video information input by a user, and performing format screening and conversion on the ping-pong video information to obtain standard ping-pong video information, the standard ping-pong video information is transmitted to the service parameter analysis module, the service parameter analysis module is connected with the ping-pong monitoring module, the service parameter analysis module converts the standard ping-pong video information into a sequence image and transmits the sequence image to the ping-pong monitoring module, the ping-pong monitoring module dynamically reconstructs a ping-pong track, and feeds the service parameter acquired by reconstruction back to the service parameter setting module; the serve parameter setting module is connected with the training control module and is used for acquiring serve parameter information of a user according to training mode information output by the training control module; the service mechanism is in communication connection with the simulation service unit and the service parameter setting module, and is used for sending table tennis balls based on the obtained service parameters, wherein the service parameters comprise service speed, rotation speed, service frequency and service initial angle. The ball serving mechanism comprises a ball serving device, an angle detector and a driving module; the ball serving device comprises a rotating mechanism, a launching tube and a motion base, wherein the rotating mechanism is arranged and connected with the launching tube, the rotating mechanism and the launching tube are arranged on the motion base, an angle detector is arranged on the launching tube and connected with a driving module, the angle detector transmits detected angle change information to the driving module, and the driving module is used for driving the motion base to change the pitching angle of the launching tube and the horizontal height and position of the ball serving device. The driving module comprises an MCU controller and a plurality of motor driving devices, and the MCU controller is electrically connected with the motor driving devices.
In this embodiment, the service parameter setting module accepts input parameters of a user in a custom mode, outputs default service parameters in a normal mode, and transmits the output service parameters to the service mechanism for service. And only in a self-defined mode, the simulation serve module can analyze the input serve video to obtain the serve parameters.
The action monitoring module and the intelligent serve module are connected with the training control module, and the training control module is used for a user to select a training mode and input information of training personnel, displaying training data and broadcasting and reminding training duration and error times.
Specifically, the training control module comprises a triggering module, an interactive display module and a personnel information input module. The trigger module comprises a power supply control module and a mode selection module, the power supply control module comprises a power supply trigger module and a power supply device, the power supply trigger module receives a trigger signal, effectively confirms the trigger signal and transmits the effective trigger signal to the power supply device, the power supply device is used for providing a required voltage source for each module in the system, the mode selection module comprises a plurality of selection keys, a user selects a training mode through the plurality of selection keys, and the training mode comprises a common mode and a custom mode.
In this embodiment, the power supply triggering module may be a button triggering mode, a capacitive touch triggering mode, a voice triggering mode, or other multiple triggering control modes, and when the valid confirmation is performed, the valid signal confirmation is performed through the key press duration or the voice feature comparison result. The user selects a training mode through a plurality of selection keys, the training mode comprises a common mode and a custom mode, the service mechanism serves balls according to default service parameters in the common mode, and the service mechanism serves balls according to the custom parameters set by the user in the custom mode.
The interactive display module is connected with the trigger module and the personnel information input module, wherein, the interactive display module comprises a communication module, a main controller module, a metering module and a multifunctional reminding module, the communication module is connected with the main controller module and is used for uploading monitoring information to the training data management platform, the main controller module is used for transmitting the mode selection information and the identity authentication information of the user to the intelligent service module, and receives the monitoring information of the motion monitoring module and the feedback information of the intelligent serve module, the metering module and the multifunctional reminding module are both connected with the main controller module, the measuring module is used for recording the number of serve balls and the training time, and the multifunctional reminding module is used for displaying and reminding the number of serve balls and the training time.
In this embodiment, the metering module includes a timer and an adder, the multifunctional reminding module includes an intelligent display and a voice reminding device, and the voice reminding device can adopt a wireless voice broadcasting device or a wired voice broadcasting device.
The personnel information input module comprises an identity card scanning module and a fingerprint verification module, the identity card scanning module comprises an image scanning device and a confirmation signal output module, the image scanning device is used for acquiring identity card image information and face image information, identifying training personnel identity information on an identity card, updating training times in a database according to the identified identity information, outputting a confirmation signal to the fingerprint verification module through the confirmation signal output module after the updating is finished, the fingerprint verification module comprises an indicator lamp group, a fingerprint input module and a fingerprint identification module, reminding a user to input fingerprint information through the indicator lamp group, the fingerprint input module transmits the input fingerprint image information to the fingerprint identification module, the fingerprint identification module acquires fingerprint characteristic information according to the fingerprint image information and compares the fingerprint characteristic information with the fingerprint characteristic information in the user database, and if the training personnel are consistent, judging that the current training personnel are legal users.
The training data management platform is in communication connection with the training control module and is used for evaluating and analyzing the training state of the training personnel according to the uploaded training data and outputting a suggestion report.
The training data management platform comprises a data storage module, a data analysis module and a correction report module, wherein the data storage module is used for storing training monitoring information and a correction report of a training person uploaded by the communication module, the data analysis module is connected with the data storage module, the data analysis module is used for analyzing the training monitoring information, acquiring trajectory data of a faulty ball and batting posture information and position information of the training person when the faulty ball is picked up, and the correction report module obtains corrected ball catching position and ball catching angle range information according to the trajectory data of the faulty ball and forms a correction report to be stored in the data storage module.
As shown in fig. 5, an auxiliary training method for table tennis sports, which adopts the above auxiliary training system for table tennis sports, specifically includes:
s1, receiving the effective trigger signal of the user and the training mode information selected by the user, and identifying and inputting the identity information of the user;
s2, adjusting the serve speed and direction through a serve mechanism according to serve parameters or simulated serve data set by a user;
s3, tracking and identifying the batting posture information, the position information and the table tennis position information of the trainee, reconstructing the table tennis track information and obtaining training data according to the reconstruction result;
s4, displaying and broadcasting the training data, the training time and the error times, and uploading the training data, the training time and the error times to a training data management platform;
and S5, evaluating and analyzing the training state of the training personnel according to the uploaded training data, the training duration and the error times, and outputting a suggestion report.
It should be noted that the described embodiments of the invention are only preferred ways of implementing the invention, and that all obvious modifications, which are within the scope of the invention, are all included in the present general inventive concept.
Claims (9)
1. An assistant training system for table tennis, comprising: the system comprises an action monitoring module, an intelligent serve module, a training control module and a training data management platform;
the action monitoring module is used for tracking and identifying the hitting posture information, the position information and the table tennis position information of the trainee and reconstructing the table tennis track information;
the intelligent service module is used for adjusting service speed and direction through the service mechanism according to service parameters set by a user or simulated service data;
the motion monitoring module and the intelligent serve module are both connected with the training control module, and the training control module is used for a user to select a training mode, input information of a trainer, display training data and broadcast and remind training duration and error times;
the training data management platform is in communication connection with the training control module and is used for evaluating and analyzing the training state of the training personnel according to the uploaded training data and outputting a suggestion report.
2. The training aid system for table tennis as recited in claim 1, wherein the motion monitoring module comprises a people monitoring module and a table tennis monitoring module;
the personnel monitoring module is used for acquiring batting posture information and position information of training personnel, the personnel monitoring module comprises a first image acquisition module, an image processing module and a personnel posture identification module, the first image acquisition module is used for acquiring batting image data of the training personnel, the image processing module is connected with the first image acquisition module, the image processing module extracts human body motion action characteristics by adopting an SIFT characteristic extraction algorithm according to the acquired batting image data to acquire a human body characteristic extraction graph sequence, the personnel posture identification module establishes an appearance model of a human body limb according to the human body characteristic extraction graph sequence and a probability graph model, high-frequency denoising, expansion and binarization processing are carried out on each image data based on the acquired appearance model of the human body limb, and then a Canny edge detection operator is adopted to acquire an initial contour line, obtaining an external contour line through morphological closed operation, finally obtaining a target contour line of a first frame of human motion through a searching method, obtaining a residual contour line through a heuristic searching method, calculating the normal of a target contour point based on the contour line information of the obtained first frame of image, searching a plurality of points on each normal, calculating a gradient threshold value on each normal, retrieving the points in the normal direction to obtain a first point higher than the gradient threshold value as a new contour point of a current frame, and further finishing the accurate extraction of the human motion contour;
the table tennis monitoring module comprises a second image acquisition module and a track information analysis module, the second image acquisition module is used for acquiring the moving images of the table tennis by adopting a binocular high-definition camera, the track information analysis module is connected with the second image acquisition module and is used for carrying out distortion correction on the acquired image through stereo correction and converting the RGB image after distortion correction into HSV image, and the third channel of the image is equalized to enhance the contrast of the image, the background with the same color as the ping-pong ball is screened out according to the preset contrast value, carrying out binarization and filtering processing on the image, then adopting a Canny edge detection operator to carry out coarse extraction on the screened background contour, and deleting the background which does not meet the conditions according to the set ping-pong ball outline area range, and finally extracting the center coordinates of the ping-pong ball according to the Hough circle detection algorithm.
3. The training aid system for soldier table tennis sports as claimed in claim 2, wherein the table tennis monitoring module further comprises a trajectory reconstruction module, the trajectory reconstruction module is connected with the trajectory information analysis module, and the trajectory reconstruction module reconstructs a trajectory of the table tennis ball based on a trajectory reconstruction algorithm according to matching information and coordinate conversion data of coordinates of centers of the table tennis balls of adjacent frames;
the process of reconstructing the track of the table tennis based on the track reconstruction algorithm is as follows:
matching the center of a table tennis ball on a time sequence according to the coordinate difference value of the centers of the table tennis balls in the adjacent front and back frame images;
converting an image coordinate system into a world coordinate system by taking a certain camera in a binocular camera as an origin of the world coordinate system, acquiring spatial positions of feature points corresponding to the circle center of the table tennis ball in the world coordinate system, and acquiring a motion trail of the table tennis ball based on a plurality of spatial position information;
and calculating the speed and the acceleration of the table tennis at different moments to complete the three-dimensional motion reconstruction of the table tennis.
4. The training aid system for table tennis as claimed in claim 3, wherein the intelligent serve module comprises a simulated serve module, a serve parameter setting module and a serve mechanism;
the simulated service module comprises a ping-pong video input module and a service parameter analysis module, the service video input module is used for acquiring ping-pong video information input by a user, and performing format screening and conversion on the ping-pong video information to obtain standard ping-pong video information, the standard ping-pong video information is transmitted to the service parameter analysis module, the service parameter analysis module is connected with the ping-pong monitoring module, the service parameter analysis module converts the standard ping-pong video information into a sequence image and transmits the sequence image to the ping-pong monitoring module, the ping-pong monitoring module dynamically reconstructs a ping-pong track, and feeds the service parameter acquired by reconstruction back to the service parameter setting module;
the service parameter setting module is connected with the training control module and is used for acquiring service parameter information of a user according to training mode information output by the training control module;
the service mechanism is in communication connection with the simulated service unit and the service parameter setting module, and is used for sending table tennis balls based on the obtained service parameters, wherein the service parameters comprise service speed, rotation speed, service frequency and service initial angle.
5. The training aid system for table tennis as claimed in claim 4, wherein the serving mechanism comprises a serving device, an angle detector and a drive module; the ball serving device comprises a rotating mechanism, a launching tube and a motion base, wherein the rotating mechanism is arranged and connected with the launching tube, the rotating mechanism and the launching tube are arranged on the motion base, an angle detector is arranged on the launching tube and connected with a driving module, the angle detector transmits detected angle change information to the driving module, and the driving module is used for driving the motion base to change the pitching angle of the launching tube and the horizontal height and position of the ball serving device.
6. The training aid system for table tennis as claimed in claim 5, wherein the training control module comprises a triggering module, an interactive display module and a personnel information entry module;
the trigger module comprises a power supply control module and a mode selection module, the power supply control module comprises a power supply trigger module and a power supply device, the power supply trigger module receives a trigger signal, effectively confirms the trigger signal and transmits the effective trigger signal to the power supply device, the power supply device is used for providing a required voltage source for each module in the system, the mode selection module comprises a plurality of selection keys, a user selects a training mode through the plurality of selection keys, and the training mode comprises a common mode and a custom mode;
the interactive display module is connected with the trigger module and the personnel information input module;
the personnel information input module comprises an identity card scanning module and a fingerprint verification module, the identity card scanning module comprises an image scanning device and a confirmation signal output module, the image scanning device is used for acquiring identity card image information and face image information, identifying training personnel identity information on an identity card, updating training times in a database according to the identified identity information, outputting a confirmation signal to the fingerprint verification module through the confirmation signal output module after the updating is finished, the fingerprint verification module comprises an indicator lamp group, a fingerprint input module and a fingerprint identification module, reminding a user to input fingerprint information through the indicator lamp group, the fingerprint input module transmits the input fingerprint image information to the fingerprint identification module, the fingerprint identification module acquires fingerprint characteristic information according to the fingerprint image information and compares the fingerprint characteristic information with the fingerprint characteristic information in the user database, and if the training personnel are consistent, judging that the current training personnel are legal users.
7. Assist training system for table tennis as claimed in claim 6, the interactive display module comprises a communication module, a main controller module, a metering module and a multifunctional reminding module, the communication module is connected with the main controller module and is used for uploading monitoring information to the training data management platform, the main controller module is used for transmitting the mode selection information and the identity authentication information of the user to the intelligent service module, and receives the monitoring information of the motion monitoring module and the feedback information of the intelligent serve module, the metering module and the multifunctional reminding module are both connected with the main controller module, the measuring module is used for recording the number of serve balls and the training time, and the multifunctional reminding module is used for displaying and reminding the number of serve balls and the training time.
8. The training data management platform comprises a data storage module, a data analysis module and a correction report module, wherein the data storage module is used for storing training monitoring information and correction reports of training personnel uploaded by the communication module, the data analysis module is connected with the data storage module and is used for analyzing the training monitoring information to obtain trajectory data of a missed ball and batting posture information and position information of the training personnel when the ball is missed, and the correction report module is used for obtaining corrected ball catching position and ball catching angle range information according to the trajectory data of the missed ball and forming a correction report to be stored in the data storage module.
9. An auxiliary training method for table tennis sports, which is based on the auxiliary training system for table tennis sports of claims 1 to 7, and is characterized by comprising the following steps:
s1, receiving the effective trigger signal of the user and the training mode information selected by the user, and identifying and inputting the identity information of the user;
s2, adjusting the serve speed and direction through a serve mechanism according to serve parameters or simulated serve data set by a user;
s3, tracking and identifying the batting posture information, the position information and the table tennis position information of the trainee, reconstructing the table tennis track information and obtaining training data according to the reconstruction result;
s4, displaying and broadcasting the training data, the training time and the error times, and uploading the training data, the training time and the error times to a training data management platform;
and S5, evaluating and analyzing the training state of the training personnel according to the uploaded training data, the training duration and the error times, and outputting a suggestion report.
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