TWI805124B - Virtual reality system for baseball pitcher fatigue analysis and sport injury diagnosis - Google Patents

Abstract

The invention discloses a virtual reality system for baseball pitcher fatigue analysis and sport injury diagnosis. A fatigue analysis module analyzes whether change in pitching movement of a baseball pitcher has reached a fatigue standard based on value of trajectory displacement change of a body centroid and value of joint angle change of a body joint of the baseball pitcher when pitching a ball. When the fatigue standard has been reached, a warning message indicating that the change in pitching movement of the baseball pitcher has reached the fatigue standard will be displayed on a virtual reality device. Next, a sport injury diagnosis module uses sport injury diagnosis technology or physical therapy knowledge to determine whether the change in pitching movement of the baseball pitcher will cause sport injury to the baseball pitcher or whether there is a risk of sport injury. If yes, the sport injury diagnosis module provides sport injury diagnosis information of the baseball pitcher based on the value of the trajectory displacement change of the body centroid and the value of the joint angle change of the body joint of the baseball pitcher when pitching the ball, so as to present the sport injury diagnosis information of the baseball pitcher on the virtual reality device.

Description

Virtual Reality System for Baseball Pitcher Fatigue Analysis and Sports Injury Diagnosis

The invention relates to a virtual reality technology for fatigue analysis and sports injury diagnosis, in particular to a virtual reality system for baseball pitcher fatigue analysis and sports injury diagnosis.

From past to recent studies, it can be known that repetitive pitching actions of baseball pitchers during the season will cause fatigue and then cause sports injuries, and past epidemiological studies have found that about 82% of baseball pitchers have arm fatigue during games and practices . When a baseball pitcher becomes fatigued and his muscle strength decreases to the point where he cannot provide the strength required for the pitching action, the pitching action of the baseball pitcher will be affected, and pitching with incorrect action will also increase the risk of injury for the baseball pitcher.

Furthermore, there is currently no relevant equipment, device or system on the market that can detect whether a baseball pitcher’s pitching action has reached the fatigue standard, so the coach can only judge a baseball pitcher based on the pitching performance of the baseball pitcher (such as ball speed, ball accuracy) Fatigue, but this method of judgment is also difficult to further determine whether the fatigue of the baseball pitcher has caused sports injuries.

Therefore, how to provide an innovative baseball pitcher fatigue analysis and sports injury diagnosis technology, to solve any of the above-mentioned problems or provide related functions (services), has become an art field. One of the major research topics for technicians.

The present invention provides an innovative virtual reality system for baseball pitcher fatigue analysis and sports injury diagnosis, which can combine the pitching scene of a real baseball pitcher with virtual reality technology to facilitate the virtual reality presentation of a baseball pitcher that is closer to the real one pitching scene; or present the pitching scene of a baseball pitcher in a three-dimensional (such as 3D or three-dimensional) manner through virtual reality equipment, so as to provide better visual feedback to users wearing virtual reality equipment; or use fatigue analysis technology , sports injury diagnosis technology or physical therapy knowledge into the fatigue analysis and sports injury diagnosis of baseball pitchers, so as to provide suggestions on sports injury prevention or motion control based on the analysis information of baseball pitchers' pitching actions; or through virtual reality The environment equipment uses three-dimensional (such as 3D or three-dimensional) technology to facilitate the adjustment of the viewing position of the baseball pitcher to the surroundings or any direction of the baseball pitcher to deeply understand or comprehensively analyze the pitching actions in different directions.

The virtual reality system for baseball pitcher fatigue analysis and sports injury diagnosis of the present invention includes: a fatigue analysis module, which uses pitching motion fatigue analysis technology or pitching motion fatigue analysis algorithm to base on the pitcher's body center of mass when pitching The value of the trajectory displacement change and the change of the joint angle of the body joints are used to analyze whether the change of the pitching action of the baseball pitcher has reached the fatigue standard; a virtual reality device is connected to the fatigue analysis module and has a virtual reality display, Among them, when the fatigue analysis module analyzes that the change of the pitching action of the baseball pitcher has reached the fatigue standard, the fatigue analysis module generates a warning message that the change of the pitching action of the baseball pitcher has reached the fatigue standard, so as to reduce the change of the pitching action of the baseball pitcher. The warning message that has reached the fatigue standard is presented on the virtual reality display of the virtual reality device; and a sports injury diagnosis module is connected to the fatigue analysis module and analyzes the changes in the pitching action of the baseball pitcher in the fatigue analysis module When the fatigue standard has been reached, the sports injury diagnosis module can use sports injury diagnosis technology or physical therapy knowledge to judge whether the change of the pitching action of the baseball pitcher will cause sports injuries to the baseball pitcher or whether there is a risk of sports injuries. If the injury diagnosis technology or physical therapy knowledge judges that the baseball pitcher will cause sports injury or has the risk of sports injury, the sports injury diagnosis module will use the value of the trajectory displacement change of the center of mass of the baseball pitcher when pitching the ball and the joints of the body joints The numerical value of the angle change provides the sports injury diagnosis information of the baseball pitcher, so as to present the sports injury diagnosis information of the baseball pitcher on the virtual reality display of the virtual reality device.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be learned from the description, or may be learned by practice of the invention. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory in nature and are not intended to limit the scope of the invention as it is intended to be claimed.

1: Virtual Reality System for Baseball Pitcher Fatigue Analysis and Sports Injury Diagnosis

10: Pitching motion detection module

11: Centroid detection unit

12: Joint detection unit

20:Pitching action calculation module

21: Centroid Trajectory Reconstruction Unit

22: Joint angle calculation unit

30:Pitching action analysis module

31: Center of mass displacement analysis unit

32: Joint angle analysis unit

40: Fatigue analysis module

50:Sports injury diagnosis module

60:Pitching action database

70:Pitching action capture module

80:Fatigue diagnosis imaging module

90:Virtual reality equipment

91:Virtual Reality Display

92: Remote control

100: Select interface

A: camera

B: baseball pitcher

C: body center of mass

D1: body joints

D2: joint angle

E: Table of joint angle values

F1: Current pitching action

F2: Correct throwing action

G: Sports Injury Diagnosis Information

FIG. 1 is a schematic structural diagram of a virtual reality system for baseball pitcher fatigue analysis and sports injury diagnosis of the present invention.

2 is a schematic diagram of the baseball pitcher's pitching motion detected by the pitching motion detection module in the virtual reality system for baseball pitcher fatigue analysis and sports injury diagnosis of the present invention.

3 is a schematic diagram of the virtual reality equipment and the baseball pitcher's body center of mass, body joints, and joint angles in the virtual reality system for baseball pitcher fatigue analysis and sports injury diagnosis of the present invention.

Fig. 4 is the virtual reality of baseball pitcher fatigue analysis and sports injury diagnosis of the present invention Schematic diagram of virtual reality equipment and selection interface in the reality system.

The following describes the implementation of the present invention through specific specific implementation forms. Those who are familiar with the technology can understand other advantages and effects of the present invention from the content disclosed in this specification, and can also implement or use other different specific equivalent implementation forms. use.

Fig. 1 is a schematic diagram of the structure of the virtual reality system 1 for baseball pitcher fatigue analysis and sports injury diagnosis of the present invention, and Fig. 2 is a pitching action detection in the virtual reality system 1 for baseball pitcher fatigue analysis and sports injury diagnosis of the present invention The schematic diagram of the module 10 detecting the pitching action of the baseball pitcher B. FIG. 3 is the virtual reality device 90 and the physical fitness of the baseball pitcher B in the virtual reality system 1 of the baseball pitcher fatigue analysis and sports injury diagnosis shown in FIG. 1 of the present invention. Schematic diagrams of heart C, body joints D1, and joint angles D2. FIG. 4 is a schematic diagram of virtual reality equipment 90 and selection interface 100 in the virtual reality system 1 for baseball pitcher fatigue analysis and sports injury diagnosis of the present invention.

As shown in Figures 1 to 3, the virtual reality system 1 for baseball pitcher fatigue analysis and sports injury diagnosis may include a pitching motion detection module 10 connected or communicated with each other, a pitching motion calculation module 20, and a pitching motion Analysis module 30 , a fatigue analysis module 40 , a sports injury diagnosis module 50 , a pitching action database 60 , a pitching action acquisition module 70 , a fatigue diagnosis imaging module 80 and a virtual reality device 90 . The pitching action detection module 10 can have a centroid detection unit 11, a joint detection unit 12 and at least one (or multiple) cameras A, and the pitching action calculation module 20 can have a centroid trajectory reconstruction unit 21 and a The joint angle calculation unit 22, the pitching action analysis module 30 can have a centroid displacement analysis unit 31 and a joint angle analysis unit Yuan 32. The virtual reality device 90 can have a virtual reality display 91 and a remote controller 92 , and the virtual reality device 90 or the virtual reality display 91 can have a selection interface 100 . At the same time, the "plural" in the present invention represents more than two (such as two, three, four, ten or more than one hundred), "connection" or "communication" represents wired or wireless connection or communication, and "user" represents baseball Pitcher B, players, coaches, medical personnel (such as doctors), etc.

In one embodiment, the pitching action detection module 10 can be a pitching action detection device, etc., and the centroid detection unit 11 can be a centroid detector (chip/circuit), centroid detection software (program), etc. , the joint detection unit 12 can be a joint detector (chip/circuit), joint detection software (program), etc., and the camera A can be a video recorder, a high-speed camera, etc. The pitching motion calculation module 20 can be a pitching motion calculator (chip/circuit), pitching motion calculation software (program), etc., and the centroid trajectory reconstruction unit 21 can be a centroid trajectory reconstruction device (chip/circuit), a centroid trajectory reconstruction Software (program), etc. The joint angle calculation unit 22 can be a joint angle calculator (chip/circuit), joint angle calculation software (program), etc. The pitching action analysis module 30 can be a pitching action analyzer (chip/circuit), pitching action analysis software (program), etc., and the centroid displacement analysis unit 31 can be a centroid displacement analyzer (chip/circuit), a centroid displacement analysis Software (program), etc. The joint angle analysis unit 32 can be a joint angle analyzer (chip/circuit), joint angle analysis software (program), etc. However, the present invention is not limited thereto.

The fatigue analysis module 40 can be a fatigue analyzer (chip/circuit), fatigue analysis software (program), etc., and the sports injury diagnosis module 50 can be a sports injury diagnosis device (chip/circuit), sports injury diagnosis software (program), etc. The pitching action database 60 can be a variety of storage media such as a pitching action data server, a pitching action data storage, etc., and the pitching action capture module 70 can be a pitching action capture device (chip/circuit), a pitching action capture software ( program), etc., the fatigue diagnosis imaging module 80 can be fatigue diagnosis imaging software (program), etc., the selection interface 100 can be a pitching parameter selection interface, etc., virtual The virtual reality device 90 can be a virtual reality display device, a virtual reality control device, and the like.

In the embodiments shown in FIGS. 2 to 3 , the pitching action detection module 10 can detect the pitching action and body center of mass of at least one (or plural) baseball pitchers B (real baseball pitchers) when pitching on a real baseball field. The position of C and the position of body joint D1. That is, the pitching action detection module 10 can detect the pitching action of the baseball pitcher B when pitching through at least one or a plurality of cameras A (such as high-speed cameras), and detect the pitching action by the center of mass of the pitching action detection module 10 The unit 11 detects the position of the body center of mass C of the baseball pitcher B when pitching through the body center of mass detection technology or the body center of mass detection algorithm, and the joint detection unit 12 of the pitching action detection module 10 through The body joint detection technology or the body joint detection algorithm is used to detect the positions of the body joints D1 (such as shoulder joints, elbow joints, hip joints, knee joints and/or trunk joints, etc.) of the baseball pitcher B when pitching.

The pitching motion calculation module 20 can reconstruct the body of the baseball pitcher B when pitching according to the position of the body center of mass C and the position of the body joint D1 of the baseball pitcher B detected by the pitching motion detection module 10 The trajectory path of the center of mass C and the joint angle D2 of the body joint D1 of the baseball pitcher B when pitching are calculated.

In other words, the center-of-mass trajectory reconstruction unit 21 of the pitching motion calculation module 20 can use the body center-of-mass trajectory reconstruction technology or the body center-of-mass trajectory reconstruction algorithm to rely on the center-of-mass detection unit 11 of the pitching motion detection module 10 The detected position of the body center of mass C of the baseball pitcher B when pitching is used to reconstruct the trajectory path of the body center of mass C of the baseball pitcher B when pitching.

In addition, the joint angle calculation unit 22 of the pitching action calculation module 20 can use the body joint angle calculation technology or the body joint angle calculation algorithm to calculate the baseball pitcher detected by the joint detection unit 12 of the pitching action detection module 10 Calculate the joint angle D2 of baseball pitcher B's body joint D1 (such as the shoulder joint) from the position of B's body joint D1 when pitching. angle, elbow angle, hip angle, knee angle, and/or spine angle of the trunk, etc.).

The pitching action analysis module 30 can analyze the trajectory displacement of the body center of mass C of the baseball pitcher B when pitching and calculate the baseball pitcher B according to the trajectory path of the body center of mass C of the baseball pitcher B reconstructed by the pitching action calculation module 20 The value of the track displacement change of the center of mass C of the body during pitching, and according to the joint angle D2 of the body joint D1 of the baseball pitcher B calculated by the pitching motion calculation module 20, the position of the body joint D1 of the baseball pitcher B during pitching is analyzed The variation of the joint angle D2 and the calculated value of the variation of the joint angle D2 of the body joint D1 of the baseball pitcher B when pitching.

In other words, the center-of-mass displacement analysis unit 31 of the pitching action analysis module 30 can use the body center-of-mass displacement analysis technology or the body center-of-mass displacement analysis algorithm to reconstruct the center-of-mass trajectory reconstruction unit 21 of the pitching action calculation module 20 The trajectory path of the body center of mass C of baseball pitcher B when pitching the ball is analyzed. value.

In addition, the joint angle analysis unit 32 of the pitching motion analysis module 30 can use the body joint angle analysis technology or the body joint angle analysis algorithm to calculate the baseball pitcher B according to the joint angle calculation unit 22 of the pitching motion calculation module 20. The joint angle D2 of the body joint D1 when pitching is analyzed, and the joint angle D2 of the body joint D1 of baseball pitcher B when pitching is analyzed (such as shoulder joint angle, elbow joint angle, hip joint angle, knee joint angle and/or the spine of the trunk joint angles, etc.) and calculated values of changes in joint angles D2 of body joints D1 of baseball pitcher B when pitching.

The fatigue analysis module 40 can use the pitching motion fatigue analysis technology or the pitching motion fatigue analysis algorithm to analyze the baseball pitcher B according to the pitching motion analysis module 30. The value of the trajectory displacement change of the center of mass C of the body during the ball and the change of the joint angle D2 of the body joint D1 are used to analyze whether the change of the pitching action of baseball pitcher B has reached the fatigue standard.

When the fatigue analysis module 40 analyzes that the change of the pitching action of the baseball pitcher B has reached the fatigue standard, the fatigue analysis module 40 generates a warning message that the change of the pitching action of the baseball pitcher B has reached the fatigue standard, and the pitching of the baseball pitcher B The warning message that the change of the action has reached the fatigue standard is presented on the selection interface 100 (such as the pitching parameter selection interface) of the virtual reality display 91 of the virtual reality device 90; The correct value of the trajectory displacement change of the body center of mass C and the change of the joint angle D2 of the body joint D1 (such as the angle of the shoulder joint, the angle of the elbow joint, the angle of the hip joint, the angle of the knee joint and/or the angle of the spine joint of the trunk, etc.) The correct value of the baseball pitcher B's body center of mass C track displacement change and the correct value of the change of the joint angle D2 of the body joint D1 when pitching the ball are presented on the virtual reality display 91 of the virtual reality device 90 On the selection interface 100 (such as the pitching parameter selection interface), for the user wearing the virtual reality display 91 of the virtual reality device 90 to directly watch or select the baseball pitcher B presented on the selection interface 100 through the remote control 92 Information such as "the warning message that the change of the pitching action has reached the fatigue standard", "the correct value of the trajectory displacement change of the center of mass C of the body" or "the correct value of the change of the joint angle D2 of the body joint D1" and other information, and then from the virtual reality The display 91 further displays more detailed information content or all related information according to the information selected by the remote controller 92 for the user to watch.

Conversely, when the fatigue analysis module 40 analyzes that the change of the pitching action of the baseball pitcher B does not meet the fatigue standard, the pitching action analysis module 30 analyzes the current value of the trajectory displacement change of the body center of mass C of the baseball pitcher B when pitching (actual value) and joint angle D2 of body joint D1 (such as shoulder joint angle, elbow joint angle, hip joint angle, knee joint angle and/or trunk joint angle The current value (actual value) of the change of the spine joint angle of the stem, etc.), and present the current value of the trajectory displacement change of the body center of mass C of the baseball pitcher B and the current value of the change of the joint angle D2 of the body joint D1 on the virtual On the selection interface 100 (such as the pitching parameter selection interface) of the virtual reality display 91 of the virtual reality device 90, the user who wears the virtual reality display 91 of the virtual reality device 90 can directly watch or select this via the remote control 92. Select the information such as "the current value of the trajectory displacement change of the center of mass C of the body" or "the current value of the change of the joint angle D2 of the body joint D1" of the baseball pitcher B when pitching the ball presented in the interface 100, and then use the virtual reality display 91 further displays more detailed information content or all related information according to the information selected by the remote controller 92 for the user to watch.

When the fatigue analysis module 40 analyzes that the change in the pitching action of baseball pitcher B has reached the fatigue standard, the sports injury diagnosis module 50 can further use sports injury diagnosis technology or physical therapy knowledge (such as professional physical therapy knowledge) to judge baseball Whether the change of pitcher B's pitching action will cause sports injury or risk of sports injury to baseball pitcher B.

If it is judged by sports injury diagnosis technology or physical therapy knowledge that baseball pitcher B will cause sports injury or has the risk of sports injury, then sports injury diagnosis module 50 can base on the trajectory of baseball pitcher B's body center of mass C when pitching The value of the displacement change and the joint angle D2 of the body joint D1 (such as shoulder joint angle, elbow joint angle, hip joint angle, knee joint angle and/or trunk spine joint angle, etc.) Diagnosis information G (such as sports injury diagnosis report), and present the sports injury diagnosis information G of baseball pitcher B on the selection interface 100 (such as pitching parameter selection interface) of the virtual reality display 91 of the virtual reality device 90, for The user who wears the virtual reality display 91 of the virtual reality device 90 directly watches or selects the "sports" of baseball pitcher B presented on the selection interface 100 through the remote control 92. "Injury diagnosis information" and other information, and then the virtual reality display 91 further displays more detailed information content or all related information according to the information selected by the remote control 92 for the user to watch.

In addition, if it is judged by sports injury diagnosis technology or physical therapy knowledge that there will be no sports injury or no risk of sports injury to baseball pitcher B, then the sports injury diagnosis module 50 can calculate the body center of mass of baseball pitcher B when pitching The current value (actual value) of the trajectory displacement change of C and the current value (actual value) of the change of the joint angle D2 of the body joint D1 are presented on the selection interface 100 of the virtual reality display 91 of the virtual reality device 90 (such as pitching parameters selection interface) for users wearing the virtual reality display 91 of the virtual reality device 90 to directly watch or select the "body center of mass C" of baseball pitcher B presented on the selection interface 100 through the remote control 92 when pitching information such as the current value of the trajectory displacement change of the body joint D1 or the current value of the change of the joint angle D2 of the body joint D1, and then the virtual reality display 91 further displays more detailed information content or all information based on the information selected by the remote control 92 associated information for .

The pitching action database 60 can store at least one baseball pitcher B (or a plurality of different baseball pitchers) detected by the centroid detection unit 11 of the pitching action detection module 10 when pitching (such as at least one or plural pitching actions) The position of the center of mass C of the body, and the body joints D1 (such as shoulder joints, elbow joints, hip joints, knee joints) of the baseball pitcher B detected by the joint detection unit 12 of the pitching action detection module 10 when pitching can be stored and/or the position of the spine joints of the trunk).

At the same time, the pitching action database 60 can also store the track path of the body center of mass C of the baseball pitcher B reconstructed by the centroid track reconstruction unit 21 of the pitching action calculation module 20, and can also store the pitching action calculation module 20 The joint angle D2 of the body joint D1 of the baseball pitcher B calculated by the joint angle calculation unit 22 (such as shoulder joint angle, elbow joint angle, hip joint angle, knee joint angle and/or trunk joint angle, etc.) and other information.

Furthermore, the pitching motion database 60 can also store the trajectory displacement of the body center of mass C of the baseball pitcher B analyzed by the center of mass displacement analysis unit 31 of the pitching motion analysis module 30 when pitching and the calculated baseball pitching motion of the pitcher B during pitching. The numerical value of the trajectory displacement change of the body center of mass C at the time can store the joint angle D2 (such as the shoulder joint angle) of the baseball pitcher B analyzed by the joint angle analysis unit 32 of the pitching action analysis module 30 when pitching. , elbow joint angle, hip joint angle, knee joint angle and/or trunk spine joint angle) and the calculated value of changes in baseball pitcher B's body joint D1 and joint angle D2 when pitching.

The fatigue analysis module 40 can be based on [1] the trajectory displacement of the body center of mass C of the baseball pitcher B when pitching, and [2] the trajectory displacement of the body center of mass C of the baseball pitcher B when pitching, which are stored in the pitching action database 60 The value of the change, [3] the change of the joint angle D2 (such as shoulder joint angle, elbow joint angle, hip joint angle, knee joint angle and/or trunk joint angle) of the body joint D1 of the baseball pitcher B when pitching, And [4] the value of the change of the joint angle D2 of the body joint D1 of the baseball pitcher B when pitching, to analyze whether the change of the baseball pitching action of the baseball pitcher B has reached the fatigue standard.

When the fatigue analysis module 40 analyzes that the change of the pitching action of the baseball pitcher B has reached the fatigue standard, the sports injury diagnosis module 50 can further base on [1] the physical fitness of the baseball pitcher B when pitching which is stored in the pitching action database 60 The trajectory displacement of the center C, [2] the value of the trajectory displacement change of the body center of mass C of the baseball pitcher B when pitching, [3] the joint angle D2 of the body joint D1 of the baseball pitcher B when pitching (such as the shoulder joint angle, Elbow joint angle, hip joint angle, knee joint angle and/or trunk spine joint angle), and [4] baseball pitcher B's body joint D1 joint angle D2 change value when pitching, to judge baseball pitchers Whether the change of B's pitching action will cause sports injury to baseball pitcher B or whether there is a risk of sports injury.

The fatigue diagnosis image module 80 can use the fatigue diagnosis image technology to [1] information from the pitching action detection module 10 (such as the position of the body center of mass C and the position of the body joint D1 of the baseball pitcher B when pitching), [2] Information from the pitching action analysis module 30 (such as the trajectory displacement of the body center of mass C of the baseball pitcher B when pitching, the value of the trajectory displacement change of the body center of mass C, the change of the joint angle D2 of the body joint D1, The value of the change of the joint angle D2 of the body joint D1), [3] information from the fatigue analysis module 40 (such as the warning message that the change of the pitching action of the baseball pitcher B has reached the fatigue standard, the change of the track displacement of the body center of mass C the correct value of the change of the joint angle D2 of the body joint D1), [4] the information from the sports injury diagnosis module 50 (such as the sports injury diagnosis information G of the baseball pitcher B), or [5] the information from the pitching action The information of the acquisition module 70 (such as at least one or multiple pitching actions of the baseball pitcher B), etc., are respectively presented in a three-dimensional (such as 3D or three-dimensional) manner on the selection interface 100 of the virtual reality display 91 of the virtual reality device 90 ( For example, on the pitching parameter selection interface), the user who wears the virtual reality display 91 of the virtual reality device 90 can directly watch or select the information presented on the selection interface 100 through the remote control 92, and then the virtual reality display 91 According to the information selected by the remote controller 92, more detailed information content or all related information is further displayed for the user to watch.

For example, the fatigue diagnosis image module 80 can compare the position of the body center of mass C of the baseball pitcher B detected by the pitching action detection module 10 when pitching the ball with the body joints D1 (such as shoulder joints, elbow joints, hip joints, etc.) , knee joints and/or spine joints of the trunk) are presented in a three-dimensional (such as 3D or three-dimensional) manner on the selection interface 100 (such as the pitching parameter display selection interface) of the virtual reality display 91 of the virtual reality device 90, For users wearing the virtual reality display 91 of the virtual reality device 90 to directly watch or select the selection interface 100 through the remote control 92, the "position of body center of mass C" or "position of the center of mass C" of baseball pitcher B when pitching The position of the body joint D1" and other information, and then According to the information selected by the remote controller 92, the virtual reality display 91 further displays more detailed information content or all related information for the user to watch.

When the fatigue analysis module 40 analyzes that the change of the pitching action of the baseball pitcher B has reached the fatigue standard, the fatigue diagnosis image module 80 can analyze that the change of the pitching action of the baseball pitcher B produced by the fatigue analysis module 40 has reached the fatigue standard. The warning message is presented in a three-dimensional (such as 3D or three-dimensional) manner on the selection interface 100 (such as the pitching parameter selection interface) of the virtual reality display 91 of the virtual reality device 90, and the baseball pitcher analyzed by the pitching action analysis module 30 The correct value of the trajectory displacement change of the body center of mass C of B when throwing the ball and the correct value of the change of the joint angle D2 of the body joint D1 are presented on the virtual reality display of the virtual reality device 90 in a three-dimensional (such as 3D or three-dimensional) manner. 91 on the selection interface 100, so that the user wearing the virtual reality display 91 of the virtual reality device 90 can directly watch or select the baseball pitcher B's "pitching motion changes" presented on the selection interface 100 through the remote control 92 Information such as "warning message reaching the fatigue standard", "the correct value of the trajectory displacement change of the body center of mass C" or "the correct value of the change of the joint angle D2 of the body joint D1" and other information, and then the virtual reality display 91 according to the remote control 92 The selected information further displays more detailed information content or all related information for the user to watch.

When the fatigue analysis module 40 analyzes that the change of the pitching action of the baseball pitcher B does not meet the fatigue standard, the fatigue diagnosis image module 80 can analyze the body mass center C of the baseball pitcher B analyzed by the pitching action analysis module 30 when pitching. The current value (actual value) of the trajectory displacement change and the current value (actual value) of the change of the joint angle D2 of the body joint D1 are presented on the virtual reality display 91 of the virtual reality device 90 in a three-dimensional (such as 3D or three-dimensional) manner On the selection interface 100 (such as the pitching parameter display selection interface), for the virtual reality of wearing the virtual reality device 90 The user of the display 91 directly watches or selects this selection interface 100 through the remote control 92. The baseball pitcher B presents the "current value of the trajectory displacement change of the body center of mass C" and the "joint angle D2 of the body joint D1" when pitching the ball. "Current value of change" and other information, and then the virtual reality display 91 further displays more detailed information content or all related information according to the information selected by the remote controller 92 for the user to watch.

The pitching motion capture module 70 can capture at least one or multiple pitching motions of the baseball pitcher B, and the fatigue diagnosis image module 80 can capture at least one or multiple pitching motions of the baseball pitcher B captured by the pitching motion capture module 70 Actions are presented in a three-dimensional (such as 3D or three-dimensional) manner on the selection interface 100 (such as the pitching parameter display selection interface) of the virtual reality display 91 of the virtual reality device 90, for the virtual reality of the wearing virtual reality device 90 The user of the display 91 directly watches or selects information such as the "pitching action" of baseball pitcher B presented on the selection interface 100 through the remote control 92, and then the virtual reality display 91 further displays more detailed information based on the information selected by the remote control 92. The content of the information or all associated information for users to view.

Therefore, the virtual reality system 1 for baseball pitcher fatigue analysis and sports injury diagnosis of the present invention can combine the entity and the virtual, so as to facilitate the combination of the entity and the virtual pitching situation or related information of the baseball pitcher B on the baseball field. Provides functions such as fatigue analysis, fatigue injury diagnosis or fatigue diagnosis image of baseball pitcher B.

The pitching motion detection module 10 can detect at least one or multiple pitching motions of the baseball pitcher B on the physical baseball field, so as to display at least one or multiple pitching motions of the baseball pitcher B in the virtual reality of the virtual reality device 90 On the selection interface 100 (such as the pitching parameter selection interface) of the display 91. For example, the selection interface 100 of the virtual reality display 91 of the virtual reality device 90 can display [1] the motion picture of baseball pitcher B's stepping foot when the knee is raised to the highest point when pitching, [2] The action screen of baseball pitcher B when the shoulder joint of the pitching arm reaches the maximum outward rotation when pitching, [3] The action screen of baseball pitcher B when the baseball leaves the hand when pitching, [4] The action screen of baseball pitcher B when pitching When the shoulder joint of the pitching arm reaches the maximum internal rotation, the action screen etc. can be directly viewed by the user wearing the virtual reality display 91 of the virtual reality device 90 or selected by the remote control 92 to select the display on the selection interface 100 Any action screen.

In the embodiment shown in FIG. 4 , the fatigue diagnosis imaging module 80 can use the joint angle value table E of the baseball pitcher B established by the sports injury diagnosis module 50, the current pitching action F1 (such as the actual or wrong pitching action) . The correct pitching action F2 and/or sports injury diagnosis information G is presented in a three-dimensional (such as 3D or three-dimensional) manner on the selection interface 100 (such as the pitching parameter selection interface) of the virtual reality display 91 of the virtual reality device 90, For the user wearing the virtual reality display 91 of the virtual reality device 90 to directly watch or select this selection interface 100 through the remote control 92, the "joint angle value table E" and "current pitching action" of baseball pitcher B presented F1", "correct pitching action F2" or "sports injury diagnosis information G" and other information, then the virtual reality display 91 further displays more detailed information content or all related information according to the information selected by the remote control 92 for Users watch. For example, the joint angle value table E may include information such as the correct value of the joint angle (such as 143 degrees), the fatigue value of the joint angle (such as 160 degrees) and the difference between the two (such as +17 degrees), and the sports injury diagnosis information G It can include information such as "the maximum external rotation angle of the shoulder is too large, and the diagnosis result is that the shoulder joint is vulnerable".

The user wearing the virtual reality display 91 can select or adjust the position of viewing the baseball pitcher B in the virtual reality display 91 through the remote control 92, so as to adjust the viewing position of the baseball pitcher B to the surroundings of the baseball pitcher B or any direction (such as front, rear, left, right), so that the user can watch the baseball pitcher B around or in any direction through the virtual reality display 91 The pitching action of baseball pitcher B.

Therefore, compared to the traditional use of 2D (two-dimensional) technology, which causes users to only watch the pitching action of a baseball pitcher in a single orientation or plane, the virtual reality device 90 of the present invention uses three-dimensional (such as 3D or three-dimensional) technology to Adjust the viewing position of the baseball pitcher B to the surroundings or any direction of the baseball pitcher B, so that the user can watch the pitching of the baseball pitcher B around the baseball pitcher B or in any direction through the virtual reality display 91 of the virtual reality device 90 Actions are helpful for in-depth understanding or comprehensive analysis of baseball pitcher B's pitching actions and related information in different directions.

To sum up, the virtual reality system for baseball pitcher fatigue analysis and sports injury diagnosis of the present invention has at least the following characteristics, advantages or technical effects.

1. The present invention can combine the pitching scene of a real baseball pitcher with virtual reality technology, which helps the virtual reality to present a pitching scene closer to a real baseball pitcher.

2. Compared with the traditional way of presenting the pitching scene of the baseball pitcher in the form of video, the virtual reality device of the present invention can present the pitching scene of the baseball pitcher in a three-dimensional (such as 3D or three-dimensional) manner, which is beneficial to provide better visual feedback for the matching Users wearing virtual reality equipment.

3. The virtual reality display or selection interface of the virtual reality device of the present invention can present the information of the pitching motion from the pitching motion detection module, the pitching motion analysis module and the pitching motion acquisition module, which is beneficial to provide baseball The detailed information of the pitcher's pitching action (such as ball speed, ball accuracy) can be viewed or selected by users wearing virtual reality devices.

4. The present invention brings fatigue analysis technology, sports injury diagnosis technology or physical therapy knowledge into the fatigue analysis and sports injury diagnosis of baseball pitchers, so as to provide information on prevention of sports injuries or action control based on the analysis information of the pitching action of the baseball pitcher. suggestion. At the same time, compared to the traditional way of judging whether a baseball pitcher is fatigued only by ball speed and ball accuracy, the present invention It can achieve the effect of preventing sports injuries of baseball pitchers and optimizing pitching actions of baseball pitchers.

5. The present invention can provide an in-depth understanding of the mechanism of baseball pitcher's muscle fatigue and its impact on performance, which can help teams or coaches to grasp the best state of baseball pitchers, and can also improve the training efficiency of baseball pitchers and create the best results.

6. Compared with the traditional use of 2D (two-dimensional) technology, the user can only watch the pitching action of the baseball pitcher in a single orientation or plane, the virtual reality device of the present invention uses three-dimensional (such as 3D or three-dimensional) technology to The position of watching the baseball pitcher is adjusted to the surrounding or any direction of the baseball pitcher, so that the user can watch the pitching action of the baseball pitcher around the baseball pitcher or in any direction through the virtual reality display of the virtual reality device, which is helpful for in-depth understanding Or comprehensively analyze the pitching action and related information of baseball pitchers in different directions.

The above-mentioned embodiments are only illustrative of the principles, features and effects of the present invention, and are not intended to limit the scope of the present invention. Any person familiar with the art can understand the above-mentioned The embodiment is modified and changed. Any equivalent changes and modifications accomplished using the content disclosed in the present invention should still be covered by the scope of the patent application. Therefore, the scope of protection of the rights of the present invention should be listed in the scope of the patent application.

1: Virtual Reality System for Baseball Pitcher Fatigue Analysis and Sports Injury Diagnosis

10: Pitching motion detection module

11: Centroid detection unit

12: Joint detection unit

20:Pitching action calculation module

21: Centroid Trajectory Reconstruction Unit

22: Joint angle calculation unit

30:Pitching action analysis module

31: Center of mass displacement analysis unit

32: Joint angle analysis unit

40: Fatigue analysis module

50:Sports injury diagnosis module

60:Pitching action database

70:Pitching action capture module

80:Fatigue diagnosis imaging module

90:Virtual reality equipment

100:Select interface

A: camera

Claims (10)

A virtual reality system for baseball pitcher fatigue analysis and sports injury diagnosis, including: a fatigue analysis module, which is based on the pitcher's body center of mass when pitching The numerical value of the trajectory displacement change and the joint angle change of the body joints analyze whether the change of the pitching action of the baseball pitcher has reached the fatigue standard; a virtual reality device is connected to the fatigue analysis module, and the virtual reality device It includes a virtual reality display with a selection interface and a remote controller, wherein, when the fatigue analysis module analyzes that the pitching action of the baseball pitcher has reached the fatigue standard, the fatigue analysis module generates the pitching action of the baseball pitcher The warning message that the change of the pitching action of the baseball pitcher generated by the fatigue analysis module has reached the fatigue standard is displayed on the selection interface of the virtual reality display of the virtual reality device On, for the user wearing the virtual reality display of the virtual reality device to select the selection interface through the remote control, the baseball pitcher’s pitching action changes have reached the fatigue standard warning message; and a sports injury The diagnosis module is connected to the fatigue analysis module and when the fatigue analysis module analyzes that the baseball pitcher's pitching action has reached the fatigue standard, the sports injury diagnosis module uses sports injury diagnosis technology or physical therapy knowledge Judging whether the change in the pitching action of the baseball pitcher will cause sports injury to the baseball pitcher or whether there is a risk of sports injury, wherein, if it is judged by the sports injury diagnosis technology or physical therapy knowledge that it will cause sports injury to the baseball pitcher or If there is a risk of sports injury, the sports injury diagnosis module provides the sports injury diagnosis of the baseball pitcher based on the value of the trajectory displacement change of the center of mass of the baseball pitcher and the change value of the joint angle of the body joint when the baseball pitcher is pitching information to base the sports injury diagnosis module on The sports injury diagnosis information of the baseball pitcher provided by the value of the trajectory displacement change of the center of mass of the body and the change value of the joint angle of the body joints when the baseball pitcher is pitching is presented in the virtual reality of the virtual reality device On the selection interface of the display, the user wearing the virtual reality display of the virtual reality device can select the sports injury diagnosis information of the baseball pitcher presented on the selection interface through the remote control. The virtual reality system as described in Claim 1 further includes a pitching action detection module, which has at least one camera, a centroid detection unit and a joint detection unit, wherein the at least one camera is used to detect Detecting the pitching action of the baseball pitcher when pitching, and the center-of-mass detection unit detects the position of the body center of mass of the baseball pitcher when pitching through body center-of-mass detection technology or body center-of-mass detection algorithm, And the joint detection unit detects the position of the body joint of the baseball pitcher when pitching through the body joint detection technology or the body joint detection algorithm. The virtual reality system as described in claim 1 further includes a pitching motion calculation module, which has a center-of-mass trajectory reconstruction unit and a joint angle calculation unit, wherein the center-of-mass trajectory reconstruction unit reconstructs the body center-of-mass trajectory Technology or body center of mass trajectory reconstruction algorithm to reconstruct the trajectory path of the body center of mass of the baseball pitcher when pitching according to the position of the body center of mass of the baseball pitcher when pitching, and the joint angle calculation unit uses the body joint angle Calculation technology or body joint angle calculation algorithm is used to calculate the joint angle of the baseball pitcher's body joints when the baseball pitcher is pitching based on the positions of the body joints when the baseball pitcher is pitching. The virtual reality system as described in claim 1 further includes a pitching action analysis module, which has a center of mass displacement analysis unit and a joint angle analysis unit, wherein the center of mass displacement analysis unit analyzes body mass center displacement Technology or body center of mass displacement analysis algorithm to analyze the trajectory displacement of the body center of mass of the baseball pitcher when pitching and calculate the trajectory of the body center of mass according to the trajectory path of the body center of mass of the baseball pitcher when pitching The numerical value of the displacement change, and the joint angle analysis unit is developed through the body joint angle analysis technology or the body joint angle analysis The algorithm analyzes the change of the joint angle of the body joint of the baseball pitcher when pitching the ball based on the joint angle of the body joint of the baseball pitcher and calculates the value of the change of the joint angle of the body joint. The virtual reality system described in Claim 1 further includes a pitching motion analysis module, wherein, when the fatigue analysis module analyzes that the baseball pitcher's pitching motion has reached the fatigue standard, the pitching motion analysis module Analyze the correct value of the trajectory displacement change of the body center of mass of the baseball pitcher when pitching the ball and the correct value of the change of the joint angle of the body joints, so as to determine the trajectory displacement change of the body center of mass of the baseball pitcher when the baseball pitcher is pitching The correct value and the change of the joint angle of the body joint are presented on the selection interface of the virtual reality display of the virtual reality device. The virtual reality system as described in Claim 1 further includes a pitching action analysis module, wherein, when the fatigue analysis module analyzes that the baseball pitcher's pitching action does not meet the fatigue standard, the pitching action analysis module Analyzing the current value of the trajectory displacement change of the body center of mass of the baseball pitcher and the current value of the change of the joint angle of the body joints when the baseball pitcher is pitching, so as to compare the current value of the trajectory displacement change of the body center of mass of the baseball pitcher The current value of the variation of the joint angle of the body joint is presented on the selection interface of the virtual reality display of the virtual reality device. The virtual reality system as described in Claim 1 further includes a pitching action database, which is used to store the position of the body center of mass of the baseball pitcher, the trajectory path of the body center of mass, and the position of the body center of mass. Trajectory displacement, the value of the trajectory displacement change of the center of mass of the body, the position of the body joint, the joint angle of the body joint, the change of the joint angle of the body joint, and the value of the change of the joint angle of the body joint. The virtual reality system as described in Claim 1 further includes a pitching action database and a fatigue diagnosis image module, wherein the fatigue analysis module is further based on the pitching action data Numerical analysis of the trajectory displacement of the body center of mass, the value of the trajectory displacement change of the body center of mass, the change of the joint angle of the body joint, and the change of the joint angle of the body joint of the baseball pitcher stored in the library Whether the change of the pitching action of the baseball pitcher has reached the fatigue standard, so that when the fatigue analysis module analyzes that the change of the pitching action of the baseball pitcher has reached the fatigue standard, the fatigue diagnosis image module will determine whether the fatigue analysis module The generated warning message that the change of the pitching action of the baseball pitcher has reached the fatigue standard is presented on the virtual reality display of the virtual reality device in a three-dimensional manner. The virtual reality system as described in Claim 1 further includes a fatigue diagnosis imaging module, which uses the fatigue diagnosis imaging technology to separate the information from the fatigue analysis module and the information from the sports injury diagnosis module in a three-dimensional manner Presented on the virtual reality display of the virtual reality device, wherein the information from the fatigue analysis module includes a warning message that the change of the pitching action of the baseball pitcher has reached the fatigue standard, a change in the track displacement of the center of mass of the body The correct value or the correct value of the change of the joint angle of the body joint, and the information from the sports injury diagnosis module includes the sports injury diagnosis information of the baseball pitcher. The virtual reality system as described in Claim 1 further includes a pitching motion capture module and a fatigue diagnosis imaging module, wherein the pitching motion capture module captures at least one pitching motion of the baseball pitcher, At least one pitching motion of the baseball pitcher captured by the pitching motion capture module is presented by the fatigue diagnosis imaging module in a three-dimensional manner on the virtual reality display of the virtual reality device.

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