CN111939541A - Evaluation method, device, equipment and system for table tennis training - Google Patents
Evaluation method, device, equipment and system for table tennis training Download PDFInfo
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- CN111939541A CN111939541A CN202010581232.6A CN202010581232A CN111939541A CN 111939541 A CN111939541 A CN 111939541A CN 202010581232 A CN202010581232 A CN 202010581232A CN 111939541 A CN111939541 A CN 111939541A
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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
- 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
- A63B71/0622—Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
- A63B2071/0625—Emitting sound, noise or music
- A63B2071/063—Spoken or verbal instructions
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- Physical Education & Sports Medicine (AREA)
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Abstract
The invention discloses an evaluation method, a device, equipment and a system for table tennis training, wherein the method comprises the following steps: acquiring image information of a table tennis ball in a training process; extracting the motion data of the table tennis according to the image information; determining the matching degree of the motion data of the table tennis and preset standard motion data; and determining the training evaluation result of the trainer according to the matching degree. According to the technical scheme, the motion data of the table tennis can be automatically measured, and the accuracy of the motion data of the table tennis is improved, so that the accuracy of a training evaluation result of a trainer is improved, and the teaching quality is further improved.
Description
Technical Field
The invention relates to the technical field of table tennis teaching, in particular to a table tennis training evaluation method, device, equipment and system.
Background
Table tennis has a wide range of enthusiasts in China and even all over the world due to its advantages of moderate intensity, strong skill, strong competitive game, low field requirements, etc. Improve the daily training and teaching of the table tennis sport skill.
In the existing table tennis training, a teacher generally conducts hand-grip teaching, and then conducts long-time repeated training according to the experience taught by a coach, and in the training process of the trainer, the teacher generally conducts teaching evaluation on the trainer after observing with naked eyes and estimating the motion data such as the ball speed, the rotating speed, the falling point, the track and the like of the table tennis according to the experience of the trainer.
However, the observation result of the instructor is not accurate enough, and different people have different experiences, so that the instructor cannot accurately estimate the motion data of the table tennis, the accuracy of the obtained training evaluation result of the trainer is low, and the teaching quality is greatly influenced.
Disclosure of Invention
The invention aims to provide a method, a device, equipment and a system for evaluating table tennis training, which are used for solving the problems that in the prior art, the accuracy of a training evaluation result of a trainer is low, and the teaching quality is greatly influenced.
In order to achieve the above object, the present invention provides an evaluation method for table tennis training, comprising:
acquiring image information of a table tennis ball in a training process;
extracting the motion data of the table tennis according to the image information;
determining the matching degree of the motion data of the table tennis and preset standard motion data;
and determining the training evaluation result of the trainer according to the matching degree.
Further, in the evaluation method for table tennis training, the extracting motion data of the table tennis ball according to the image information includes:
analyzing the image information to obtain a two-dimensional coordinate of the table tennis;
and performing three-dimensional reconstruction and target tracking on the two-dimensional coordinates to obtain the motion data of the table tennis.
Further, in the evaluation method for table tennis training, the motion data of the table tennis ball includes at least one of ball speed, rotation speed, drop point and trajectory.
Further, the evaluation method for table tennis training further includes:
and if an image playing instruction is detected, playing the image information of the table tennis through a display device.
Further, the evaluation method for table tennis training further includes:
and correlating the image information of the table tennis ball with the motion data of the table tennis ball so as to play the motion data of the table tennis ball at the same time of playing the image information of the table tennis ball.
Further, the evaluation method for table tennis training further includes:
generating an initial training plan of the trainer according to the training evaluation result of the trainer;
receiving feedback information of a mentor for the initial training plan;
and generating a final training plan of the trainer according to the feedback information.
Further, in the evaluation method for table tennis training described above, the generating a final training plan of the trainer according to the feedback information includes:
if the feedback information indicates confirmation, taking the initial training plan of the trainer as a final training plan of the trainer;
and if the feedback information represents adjustment, adjusting the initial training plan of the trainer according to the adjustment information of the instructor, and then generating a final training plan of the trainer.
The invention also provides an evaluation device for table tennis training, comprising:
the acquisition module is used for acquiring image information of the table tennis in the training process;
the extraction module is used for extracting the motion data of the table tennis according to the image information;
the determining module is used for determining the matching degree of the motion data of the table tennis ball and preset standard motion data; and determining the training evaluation result of the trainer according to the matching degree.
The invention also provides evaluation equipment for table tennis training, which comprises a memory and a processor;
the memory has stored thereon a computer program which, when executed by the processor, carries out the steps of the evaluation method of table tennis training as described in any one of the above.
The invention also provides a table tennis training system, which comprises image acquisition equipment and the table tennis training evaluation equipment;
the image acquisition equipment is used for acquiring image information of the table tennis in the training process;
the evaluation equipment for table tennis training is used for realizing the steps of the evaluation method for table tennis training.
The method of the invention has the following advantages:
according to the evaluation method, the evaluation device, the evaluation equipment and the evaluation system for table tennis training, image information of table tennis in the training process is obtained; the method has the advantages that the motion data of the table tennis are extracted according to the image information of the table tennis, the motion data of the table tennis are automatically measured, and the accuracy of the motion data of the table tennis is improved.
Drawings
Fig. 1 is a flowchart of an embodiment of a table tennis training evaluation method of the present invention.
Fig. 2 is a flowchart of another embodiment of the evaluation method for table tennis training of the present invention.
Fig. 3 is a schematic structural diagram of an embodiment of the evaluation device for table tennis training of the present invention.
Fig. 4 is a schematic structural diagram of another embodiment of the evaluation device for table tennis training of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below in connection with specific embodiments, but it should be understood by those skilled in the art that the embodiments described below are only for illustrating the present invention and should not be construed as limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Preferred embodiments of the present invention will be described in detail with reference to the following examples. It is to be understood that the following examples are given for illustrative purposes only and are not intended to limit the scope of the present invention. Various modifications and substitutions may be made by those skilled in the art without departing from the spirit and scope of the invention, and all such modifications and substitutions are intended to be within the scope of the claims.
The experimental procedures used in the following examples are all conventional procedures unless otherwise specified. Materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example 1
Fig. 1 is a flowchart of an embodiment of an evaluation method for table tennis training of the present invention, and as shown in fig. 1, the evaluation method for table tennis training of the present embodiment may specifically include the following steps:
100. acquiring image information of a table tennis ball in a training process;
in a specific implementation process, a plurality of image acquisition devices such as cameras can be arranged in a table tennis training field, parameters such as focal position apertures and the like of the cameras are adjusted, the actual position of the table tennis training field is calibrated and converted into a three-dimensional coordinate system, and a table tennis training field model is established according to calibrated data. Therefore, in the training process of a trainer, the image information of the table tennis in the training process can be acquired through the plurality of cameras.
101. Extracting the motion data of the table tennis according to the image information of the table tennis;
specifically, the image information of the table tennis is analyzed to obtain two-dimensional coordinates of the table tennis, and the obtained two-dimensional coordinates of the table tennis are transmitted to the three-dimensional analysis model so as to perform three-dimensional reconstruction and target tracking on the two-dimensional coordinates of the table tennis to obtain the motion data of the table tennis. Wherein, the motion data of the table tennis comprises at least one of ball speed, rotating speed, drop point and track.
Specifically, the ball speed of the table tennis ball can be calculated according to the three-dimensional space track points and the time of each point. The rotating speed of the table tennis can be calculated based on the theories of Magnus force and the like and by taking the actual characteristics of the table tennis as guidance. The track of the table tennis is obtained through a tracking algorithm, and the falling point information of the table tennis is obtained through physical model simulation calculation according to the track.
102. Determining the matching degree of the motion data of the table tennis and the preset standard motion data;
in a specific implementation process, the instructor may preset a training plan of the trainer, where the training plan includes standard motion data of the table tennis ball under the training plan, and therefore, in this embodiment, after determining the motion data of the table tennis ball, the motion data of the table tennis ball may be compared with the preset standard motion data, so as to determine a matching degree of the motion data of the table tennis ball and the preset standard motion data.
For example, the difference between the speed of the table tennis ball and the standard speed of the table tennis ball may be calculated, and the matching degree between the speed of the table tennis ball and the standard speed of the table tennis ball may be determined according to specific values of the difference, such as the difference is 0, the matching degree is 100, the difference is 1, the matching degree is 99, and so on, but this embodiment is not limited to the determination of the matching degree, and for example, each matching degree corresponds to a range of values, such as the difference is 0-2, the matching degree is 100, the difference is 2-5, the matching degree is 99, and so on.
103. And determining the training evaluation result of the trainer according to the determined matching degree.
In this embodiment, after the matching degree of the motion data of the table tennis ball and the preset standard motion data is determined, the training evaluation result of the trainer can be determined according to the determined matching degree.
For example, the degree of matching is between 90 and 100, the training assessment result of the trainer is excellent, the degree of matching is between 80 and 89, the training assessment result of the trainer is good, the degree of matching is between 70 and 79, the training assessment result of the trainer is good, the degree of matching is between 60 and 69, the training assessment result of the trainer is poor, the degree of matching is below 60, and the training assessment result of the trainer is poor. In the present embodiment, the biscuit is not limited to the above manner.
In the evaluation method for table tennis training of the embodiment, image information of a table tennis ball in the training process is obtained; the method has the advantages that the motion data of the table tennis are extracted according to the image information of the table tennis, the motion data of the table tennis are automatically measured, and the accuracy of the motion data of the table tennis is improved.
In practical application, the instructor and/or the trainer may further input an image playing instruction to view image information of the table tennis ball, and therefore, in this embodiment, if the image playing instruction is detected, the image information of the table tennis ball is played through the display device. The instructor and/or trainer can input the image playing instruction by means of keys, voice, gestures and the like. When playing the image information of the table tennis, slow playing, fast playing, frame-by-frame playing and the like can be carried out.
Further, in order to enable the instructor and/or the trainer to intuitively obtain the required information, in this embodiment, the image information of the table tennis ball may be associated with the motion data of the table tennis ball, so that the motion data of the table tennis ball is played while the image information of the table tennis ball is played.
Example 2
Fig. 2 is a flowchart of another embodiment of the evaluation method for table tennis training of the present invention, and as shown in fig. 2, the evaluation method for table tennis training of the present embodiment further describes the technical solution of the present invention in more detail based on the above embodiment. As shown in fig. 2, the evaluation method for table tennis training in this embodiment may specifically include the following steps:
200. acquiring image information of a table tennis ball in a training process;
201. extracting the motion data of the table tennis according to the image information of the table tennis;
202. determining the matching degree of the motion data of the table tennis and the preset standard motion data;
203. determining a training evaluation result of the trainer according to the determined matching degree;
204. generating an initial training plan of the trainer according to a training evaluation result of the trainer;
in this embodiment, the training evaluation result of the trainer may be analyzed to find the deficiency of the trainer, so that the initial training plan of the trainer may be made according to the deficiency of the trainer. For example, after a trainer strikes a ball, the deviation between the drop point of the table tennis ball and the preset drop point is large, and at the moment, comprehensive analysis is performed according to the motion data of the table tennis ball, so that the reason why the deviation between the drop point of the table tennis ball and the preset drop point is large is determined, and an initial training plan of the trainer can be made.
205. Receiving feedback information of a mentor aiming at the initial training plan;
in practical application, the generated initial training plan of the trainer may have an error, and therefore, in this embodiment, after the initial training plan of the trainer is generated, the instructor may determine whether the generated initial training plan of the trainer can be executed according to an actual situation, if so, the instructor may input feedback information indicating the determination, and if not, the instructor may edit and adjust the initial training plan of the trainer and input feedback information indicating the adjustment.
In this embodiment, the instructor may face the trainer to instruct training, or may remotely determine whether the generated initial training plan of the trainer can be executed through the terminal.
206. And generating a final training plan of the trainer according to the feedback information.
Specifically, if the feedback information indicates confirmation, the initial training plan of the trainer is taken as the final training plan of the trainer; and if the feedback information represents the adjustment, adjusting the initial training plan of the trainer according to the adjustment information of the instructor, and then generating the final training plan of the trainer.
Further, in the above embodiment, classification management may be performed according to the final training plans of all trainers, so as to perform classification teaching. Further, the comprehensive information management of the trainee is also possible, and for example, basic information of the trainee, a physical examination report of the trainee, a training evaluation result of the trainee, and the like are managed.
Example 3
Fig. 3 is a schematic structural diagram of an embodiment of an evaluation apparatus for table tennis training of the present invention, and as shown in fig. 3, the evaluation apparatus for table tennis training of the present embodiment includes an obtaining module 30, an extracting module 31, and a determining module 32.
An obtaining module 30, configured to obtain image information of a table tennis ball in a training process;
the extraction module 31 is used for extracting the motion data of the table tennis according to the image information of the table tennis;
specifically, analyzing the image information to obtain a two-dimensional coordinate of the table tennis ball; and performing three-dimensional reconstruction and target tracking on the two-dimensional coordinates to obtain the motion data of the table tennis. Wherein, the motion data of the table tennis comprises at least one of ball speed, rotating speed, drop point and track.
The determining module 32 is used for determining the matching degree of the motion data of the table tennis ball and the preset standard motion data; and determining the training evaluation result of the trainer according to the matching degree.
The evaluation device for table tennis training of the embodiment obtains the image information of the table tennis in the training process; the method has the advantages that the motion data of the table tennis are extracted according to the image information of the table tennis, the motion data of the table tennis are automatically measured, and the accuracy of the motion data of the table tennis is improved.
Example 4
Fig. 4 is a schematic structural diagram of another embodiment of the evaluation apparatus for table tennis training of the present invention, and as shown in fig. 4, the evaluation apparatus for table tennis training of the present embodiment may further include a detection module 33 based on the above embodiment.
And the detection module 33 is configured to play the image information of the table tennis ball through the display device if the image playing instruction is detected.
Further, in the above embodiment, the extracting module 31 is further configured to associate the image information of the table tennis ball with the motion data of the table tennis ball, so that the motion data of the table tennis ball is played at the same time as the image information of the table tennis ball is played.
Further, in the foregoing embodiment, the determining module 32 is further configured to:
generating an initial training plan of the trainer according to a training evaluation result of the trainer;
receiving feedback information of a mentor aiming at the initial training plan;
and generating a final training plan of the trainer according to the feedback information.
Specifically, if the feedback information indicates confirmation, the initial training plan of the trainer is taken as the final training plan of the trainer; and if the feedback information represents the adjustment, adjusting the initial training plan of the trainer according to the adjustment information of the instructor, and then generating the final training plan of the trainer.
Example 5
The invention also provides evaluation equipment for table tennis training, which comprises a memory and a processor;
the memory has stored thereon a computer program which, when executed by the processor, implements the steps of the evaluation method of table tennis training of the above-described embodiments.
Example 6
The invention also provides a table tennis training system, which comprises image acquisition equipment and the table tennis training evaluation equipment of the embodiment;
the image acquisition equipment is used for acquiring image information of the table tennis in the training process;
the evaluation equipment for table tennis training is used for realizing the steps of the evaluation method for table tennis training of the embodiment.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. An evaluation method for table tennis training, comprising:
acquiring image information of a table tennis ball in a training process;
extracting the motion data of the table tennis according to the image information;
determining the matching degree of the motion data of the table tennis and preset standard motion data;
and determining the training evaluation result of the trainer according to the matching degree.
2. The evaluation method of table tennis training of claim 1, wherein the extracting the motion data of the table tennis ball according to the image information comprises:
analyzing the image information to obtain a two-dimensional coordinate of the table tennis;
and performing three-dimensional reconstruction and target tracking on the two-dimensional coordinates to obtain the motion data of the table tennis.
3. The method of evaluating table tennis training of claim 2, wherein the table tennis motion data comprises at least one of ball speed, spin rate, drop point, and trajectory.
4. The method of evaluating ping-pong training of claim 1, further comprising:
and if an image playing instruction is detected, playing the image information of the table tennis through a display device.
5. The method of evaluating ping-pong training of claim 4, further comprising:
and correlating the image information of the table tennis ball with the motion data of the table tennis ball so as to play the motion data of the table tennis ball at the same time of playing the image information of the table tennis ball.
6. The method of evaluating ping-pong training of claim 1, further comprising:
generating an initial training plan of the trainer according to the training evaluation result of the trainer;
receiving feedback information of a mentor for the initial training plan;
and generating a final training plan of the trainer according to the feedback information.
7. The method for evaluating ping-pong training as claimed in claim 1, wherein the generating a final training plan of the trainer according to the feedback information comprises:
if the feedback information indicates confirmation, taking the initial training plan of the trainer as a final training plan of the trainer;
and if the feedback information represents adjustment, adjusting the initial training plan of the trainer according to the adjustment information of the instructor, and then generating a final training plan of the trainer.
8. An evaluation device for table tennis training, comprising:
the acquisition module is used for acquiring image information of the table tennis in the training process;
the extraction module is used for extracting the motion data of the table tennis according to the image information;
the determining module is used for determining the matching degree of the motion data of the table tennis ball and preset standard motion data; and determining the training evaluation result of the trainer according to the matching degree.
9. An evaluation device for table tennis training, comprising a memory and a processor;
the memory has stored thereon a computer program which, when being executed by the processor, carries out the steps of the evaluation method of table tennis training according to any one of claims 1 to 7.
10. A table tennis training system comprising an image acquisition device and an evaluation device for table tennis training according to claim 9;
the image acquisition equipment is used for acquiring image information of the table tennis in the training process;
the table tennis training evaluation device for implementing the steps of the table tennis training evaluation method according to any one of claims 1 to 7.
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