JP7291011B2 - Information processing device, information processing method, program and information processing system - Google Patents

Description

The present invention relates to an information processing technology related to behavior analysis in the field of golf.

Various techniques have been proposed for analyzing a golfer's swing motion. Japanese Patent Application Laid-Open No. 2002-201000 discloses a technique for measuring the incident angle of a golf club head and the like and analyzing the swing motion. Patent Literature 2 discloses a technique for measuring the rotation angle and the like of a golf club and analyzing the swing motion. Patent Literature 3 discloses a technique for estimating the hitting position on the face surface at the time of hitting. Patent Document 4 discloses a technique of analyzing the behavior of a golf club head and predicting the trajectory of a hit ball. Also, a technique for recommending golf equipment suitable for a golfer based on such analysis results has been proposed (for example, Patent Document 5).

Japanese Patent Application Laid-Open No. 2017-023638 JP 2017-023639 A JP 2017-070366 A JP 2017-000179 A JP 2011-015968 A

Behavior of a golf ball immediately after hitting, such as initial velocity, launch angle, and spin rate, is one of the matters of great interest to golf players. The behavior of a hit ball is generally measured by measurement equipment such as cameras and Doppler radars. Without such equipment, the golfer would not know the behavior of the ball as a result of his swing motion. Patent document 4 proposes a technique for predicting the trajectory of a hit ball. However, this technique predicts the behavior of the golf club head and analyzes the collision between the head and the golf ball, which complicates calculations.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a technique for estimating the behavior of a hit ball without requiring measurement equipment such as a camera or Doppler radar.

According to the invention, for example,
Acquisition means for acquiring measurement results of a golfer's golf swing motion;
and computing means for computing the behavior of the hit ball due to the golf swing motion,
The measurement results include the head speed of the golf club head at the time of hitting , the incident angle at the time of hitting , and the face angle at the time of hitting;
The behavior of the hit ball includes initial velocity, vertical launch angle, and backspin amount,
The computing means is
The head speed obtained by the obtaining means and the incidence angle obtained by the obtaining means are added to a predetermined arithmetic expression having a plurality of variables including at least the head speed at the time of hitting the golf club head, the angle of incidence at the time of hitting , and the face angle at the time of hitting. Calculate the behavior of the hit ball by substituting the angle and the face angle,
The acquisition means is
Acquiring an attribute of the golfer and an attribute of the golf equipment used by the golfer in the golf swing motion;
The plurality of variables includes attributes of the golfer and attributes of the golf equipment;
The computing means is
calculating the behavior of the hit ball by substituting the head speed, the incident angle, the face angle, the attribute of the golfer, and the attribute of the golf equipment acquired by the acquisition means into the arithmetic expression;
An information processing apparatus characterized by:

According to the present invention, it is possible to provide a technique for estimating the behavior of a hit ball without requiring measurement equipment such as a camera or Doppler radar.

1 is a schematic diagram of an information processing system according to an embodiment of the present invention; FIG. (A) is an explanatory diagram of an incident angle, and (B) is an explanatory diagram of a face angle. (A) is an explanatory diagram for distinguishing striking positions, and (B) is an explanatory diagram showing an example of a technique for measuring the striking positions. (A) and (B) are explanatory diagrams of the launch angle of a hit ball. (A) and (B) are diagrams for explaining the spin rate of a hit ball, and (C) and (D) are diagrams for explaining trajectory. (A) A flowchart showing an example of computer processing when performing machine learning to generate an arithmetic expression, (B) a flowchart showing an example of processing by an information processing apparatus. FIG. 4 is a diagram showing an example of how to select recommended golf equipment; (A) and (B) are diagrams showing an example of a method for selecting recommended golf equipment. FIG. 5 is a diagram showing examples of multiple types of arithmetic expressions; The figure which shows another example of a system.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. It should be noted that the following embodiments do not limit the invention according to the claims, and not all combinations of features described in the embodiments are essential to the invention. Two or more of the features described in the embodiments may be combined arbitrarily. Also, the same or similar configurations are denoted by the same reference numerals, and redundant explanations are omitted.

<First embodiment>
<System configuration>
FIG. 1 is a schematic diagram of an information processing system 1 according to one embodiment of the present invention. A system 1 includes a measurement device 2 , an information processing device 3 , a display device 4 and an input device 5 . Arrow X, arrow Y, and arrow Z indicate a three-dimensional coordinate system recognized or set by the measuring device 2. Arrow X and arrow Y indicate horizontal directions orthogonal to each other, and arrow Z indicates a vertical direction. . Arrow X indicates the direction of the flight line of the golf ball.

The measurement device 2 is a device that measures the golf swing motion of the golfer 10 . In this embodiment, the device measures the behavior of the golf club 100 . A golf club 100 includes a head 101 having a face surface (hitting surface) 101 a and a shaft 102 connected to the head 101 . A grip (not shown) is attached to the end of the shaft 102 on the golfer 10 side. The measuring device 2 is a device attached to the shaft 102 (or grip) of the golf club 100 and includes an acceleration sensor and an angular velocity sensor. As the measuring device 2, for example, TSND121 from ATR-Promotions or M-tracer from Seiko Epson can be used. Time-series data of the three-dimensional acceleration and three-dimensional angular velocity of the golf club 100 during the swing can be obtained from the detection results of the measuring device 2 .

The information processing device 3 is a computer that estimates the behavior of the golf ball 200 hit with the golf club 100 by the golf player 10 in a golf swing motion, based on the measurement results of the measurement device 2 and the like. The information processing apparatus of the present embodiment also has a function of recommending golf equipment suitable for the golfer 10 based on the estimated behavior of the hit ball. Golf equipment includes golf clubs and golf balls. The information processing device 3 includes a processing unit 31, a storage unit 32, and an I/F unit (interface unit) 33, which are electrically connected to each other. The processing unit 31 is a processor such as a CPU. The storage unit 32 includes one or more storage devices. A storage device is, for example, a RAM, a ROM, a hard disk, or the like. The storage unit 32 stores programs executed by the processing unit 31 and various data. A program executed by the processing unit 31 can be composed of a plurality of instructions readable by the processing unit 31 .

The I/F unit 33 inputs and outputs data between the external device and the processing unit 31 . The I/F section 33 can include an I/O interface and a communication interface. The measuring device 2 is communicably connected to the information processing device 3 by wired communication or wireless communication, and the information processing device 3 acquires these measurement results.

A display device 4 and an input device 5 are connected to the information processing device 3 . The display device 4 is, for example, an electronic image display device such as a liquid crystal display device, and displays the processing result of the information processing device 3 . The input device 5 is a mouse or a keyboard, and receives data input and operation instructions for the information processing device 3 . The display device 4 may be a device having an information input function such as a touch panel, and in this case, the input device 5 may be omitted.

<Battered ball behavior estimation>
For the golfer 10, the trajectory of the golf ball 200 launched by his/her own golf swing motion is important. The trajectory of the golf ball is estimated from the behavior of the golf ball 200 immediately after hitting, such as the initial speed, the vertical and horizontal launch angles, the amount of backspin, and the amount of side spin. Such hitting behavior can be measured by measurement equipment such as a camera and Doppler radar, but in the present embodiment, such measurement equipment is not required and the behavior of the hitting ball is estimated from the measurement results of the measurement device 2 or the like.

<Generation of arithmetic expression>
In the present embodiment, the behavior of the golf ball 200 is estimated by an arithmetic expression (model) using the measurement results of the golf swing motion of the golfer 10 as explanatory variables and the behavior of the golf ball 200 immediately after hitting as the objective variable. As a preparation, generate an arithmetic expression.

The explanatory variables may include the measurement results of the golf swing motion of the golfer 10, attributes of the golfer 10, and attributes of golf equipment. The golf swing motion measurement results may include measurement results obtained by the measurement device 2 or other measurement methods. The measurement results obtained by the measuring device 2 include the head speed of the head 101 at the time of hitting, the incident angle of the head 101, and the face angle at the time of hitting. FIG. 2A is an explanatory diagram of the incident angle, and FIG. 2B is an explanatory diagram of the face angle.

Referring to FIG. 2A, the angle of incidence is the angle of the trajectory of head 101 in the Z direction when hitting golf ball 200 with respect to the X direction in the XZ plane. In the example shown in the figure, the direction D1 of the head trajectory is specified from the position of the head 101 a predetermined time before the impact timing and the position X1 of the head 101 at the time of impact, and the angle θ1 between the D1 direction and the X direction is incident. is the angle. In the illustrated example, the upward direction is positive and the downward direction is negative. The hitting timing can be measured by the measuring device 2 based on the change in the acceleration of the golf club 100, and the position of the head 101 at that time is the position X1 of the head 101 at the time of hitting.

Referring to FIG. 2B, the hit face angle is the orientation of face surface 101a when golf ball 200 is hit. In the example of FIG. 2B, the angle θ2 formed between the Y direction and the face surface on the XY plane is the face angle. In terms of measurement by the measurement device 2, the angle θ2 can be regarded as a reference (0 degrees) at the time of calibration, for example. For example, calibration is a process of making the measuring device 2 recognize the target direction. In the example shown in the figure, the direction in which the face 101a opens is a negative angle, and the direction in which the face 101a closes is a positive angle.

The measurement results obtained by the measuring device 2 may also include face rotation, bending return time, loft angle at the time of impact, swing trajectory, and the like. The face rotation is the degree of change of the face surface 101a during the swing, for example, the amount of rotation of the shaft 102 about the axis per unit time immediately before hitting. The unit time is, for example, 0.01 seconds immediately before hitting. The bend return time is the time from when the acceleration of a predetermined portion of the golf club (for example, the tip of the grip) reaches its maximum until impact. In general, during a golf swing, after the downswing, the shaft 102 tends to be in a direction in which the head 101 lags behind the hand side, the hand side decelerates before hitting, and the bending of the shaft 102 returns to face the impact. The bending return time can be said to be the time for the bending of the shaft 102 to return before impact. The loft angle at impact is the angle between the vertical plane and the face surface 101a at impact on the XZ plane. The swing trajectory is the angle of the Y-direction trajectory of the head 101 when hitting the golf ball 200 with respect to the X-direction on the XY plane.

In addition to this, the hitting position of the golf ball 200 on the face surface 101a can be mentioned as the measurement result of the golf swing motion. FIG. 3A is an explanatory diagram showing an example of quantification of the hitting position. In the illustrated example, the position of the hitting position 101b is specified in a coordinate system in which the face center of the face surface 101a is the origin, and the toe-heel direction D2 and the vertical direction (crown-sole direction) D3 are coordinate axes. The coordinate axis D2, for example, has a positive value on the heel side, and the coordinate axis D3, for example, has a positive value on the upper side (crown side). The hitting position 101b can be measured by the measuring device 2 from the amount of rotation of the shaft 102 at the time of hitting, the change in the orientation of the face surface 101a, and the like. The remaining marker 110 may be attached to the face surface 101a for measurement. Alternatively, the position of the face surface 101a and the golf ball 200 at the time of hitting may be photographed by a camera, and the hitting position may be measured from the photographed image.

Attributes of the golfer 10 can include characteristics of the golfer, such as sex, height, weight, and age. Attributes of golf equipment include attributes of golf clubs and attributes of golf balls. The attributes of the golf club include the feature amount of the entire golf club, the feature amount of the shaft, the feature amount of the head, and the feature amount of the grip. The characteristic quantity of the golf club as a whole includes the total weight, balance, product type, and the like of the golf club. Shaft characteristics include length, stiffness, flex, torque, tone, and weight. Head feature amounts include the depth of the center of gravity, the height of the center of gravity, the distance from the center of gravity, the angle of the center of gravity, the loft angle, and the weight. The feature values of the grip include weight and material.

Of the behavior of the hit ball, which is the objective variable, the initial velocity of the hit ball is the speed of the golf ball 200 immediately after hitting. FIG. 4A is an explanatory diagram of the vertical launch angle, and FIG. 4B is an explanatory diagram of the horizontal launch angle. As shown in FIG. 4A, the vertical launch angle is the angle θ3 of the trajectory of the golf ball 200 in the Z direction immediately after hitting with respect to the X direction in the XZ plane. Position X2 is the initial position of golf ball 200 . In the illustrated example, the upward direction is positive and the downward direction is negative. As shown in FIG. 4B, the left-right launch angle is the angle θ4 of the trajectory in the Y direction of golf ball 200 immediately after hitting with respect to the Y direction on the XY plane. In the illustrated example, the left direction is positive and the right direction is negative.

FIG. 5A is an explanatory diagram of the backspin amount. The backspin amount is the amount of rotation of golf ball 200 about the Y-axis immediately after hitting. In the illustrated example, upward rotation is positive, and downward rotation is negative. FIG. 5B is an explanatory diagram of the side spin amount. The side spin amount is the amount of rotation of golf ball 200 about the Z-axis immediately after hitting. In the illustrated example, rotation in the hook direction is positive, and rotation in the slice direction is negative.

The arithmetic expression can be generated using the measured data group consisting of the data group of the explanatory variables and the measured data group of the corresponding objective variables. The objective variable is actually measured by measuring equipment such as a camera or Doppler radar, and for example, TRACKMAN manufactured by TRACKMAN can be used.

The arithmetic expression can be derived, for example, by machine learning using the measured data group as teacher data. FIG. 6A is a flowchart showing an example of computer processing when machine learning is performed on a computer to derive an arithmetic expression. The computer used for machine learning may be the information processing device 3 in which machine learning software is installed.

In S1, a group of actually measured data is read as teacher data. The measured data group can be stored in advance in an external storage device in a predetermined data format. In S2, various settings of the learning method are performed, and machine learning is executed based on the teacher data read in S1. In S3, an arithmetic expression is generated as a product of machine learning. The generated arithmetic expression is stored in the storage unit 32 of the information processing device 3 and used for estimating the behavior of the hit ball.

Examples of machine learning algorithms include linear regression using stochastic gradient descent, ridge regression, Lasso regression, support vector regression, and deep learning. In the case of linear regression, ridge regression, and Lasso regression using the stochastic gradient descent method, y is the objective variable, x is the explanatory variable, and a is the coefficient.
y1=a1.x1+a2.x2+a3.x3. . .
can be used. Then, by the machine learning of S2, the coefficient a can be obtained and the arithmetic expression can be completed. In the case of Lasso regression and deep learning, both the formula and the coefficients in the formula can be obtained by machine learning in S2, and in the case of Lasso regression, the type of explanatory variables finally used can also be determined by machine learning.

According to experiments related to this embodiment, among the explanatory variables, the head speed, the angle of incidence of the head, and the face angle at the time of hitting, in particular, affect the behavior of the hit ball (initial ball speed, vertical and horizontal launch angles, backspin amount, and Sidespin amount) was high, and when these were used as explanatory variables, a certain degree of accuracy was obtained in estimating the behavior of the hit ball. Therefore, at least the explanatory variables are the head speed and the face angle at the time of impact. In this case, when setting the arithmetic expression with the above primary expression, for example,
Ball initial velocity = a1 · head speed + a2 · incident angle + a3 · face angle + a0
Vertical launch angle = a11 · head speed + a12 · incident angle + a13 · face angle + a10
and so on.

Among the explanatory variables, the hit position also has a relatively high correlation with the behavior of the hit ball (ball initial velocity, vertical and horizontal launch angles, backspin amount, and side spin amount), and the estimation accuracy can be improved. In this case, when setting the above primary expression as the arithmetic expression, for example,
Amount of side spin = a21 · head speed + a22 · angle of incidence + a23 · face angle + a24 · hitting position + a20
It can be expressed as.

The explanatory variables used in the arithmetic expression are of course not limited to these, and may include all or part of the attributes of the golfer or all or part of the attributes of the golf equipment. Also, if there are three objective variables, the initial velocity of the ball, the vertical launch angle, and the amount of backspin, it is possible to estimate the trajectory with a certain degree of accuracy. It is also possible to estimate the degree of left-right curvature of the hit ball, and it is possible to improve the accuracy of estimating the trajectory.

Note that the arithmetic expression may be derived by a technique other than machine learning, for example, by correlation analysis. For example, it may be derived from a group of measured data by multiple regression analysis. In the case of multiple regression analysis, the formula is, for example, where b is the coefficient, initial ball speed = head speed x (b0 + b1 · incident angle + b2 · face angle + b3 · √ ((hitting position in D3 direction) ² + (hitting position in D2 direction) ² )
Vertical launch angle=b11×incident angle+b12·face angle+b13·hit position in D3 direction+b10
Backspin amount=b21.incident angle+b22.face angle+b23.hit position in D3 direction+b20
Left and right launch angle = b31 · swing path + b32 · face angle + b33 · hitting position in D3 direction + b34 · hitting position in toe-heel direction Side spin amount = b41 · incident angle + b42 · swing path + b43 · face angle + b44 · D2 direction hitting position It can be expressed as a hitting position or the like.

<Estimation processing and selection of recommended products>
FIG. 6(B) shows an example of processing for estimating the behavior of a hit ball using the arithmetic expression obtained in the processing of FIG. 6(A). . In S11, a process of accepting an explanatory variable used for current estimation of the behavior of the hit ball is performed. Specifically, the golfer's swing motion is measured by the measuring device 2 . Here, the golfer 10 actually hits the golf ball 200 with the golf club 100 and measures the behavior of the golf club 100 with the measuring device 2 . The measurement results are stored in the storage unit 32 . Explanatory variables other than the measurement results of the measuring device 2 can be input by the operator through the input device 5 , and the input contents are stored in the storage unit 32 .

In S12, the arithmetic expression stored in the storage unit 32 is read out, and in S13, the explanatory variables used for the current estimation accepted in S11 are read out. In S14, the explanatory variable read out in S13 is substituted into the arithmetic expression read out in S12 to calculate the objective variable. This provides an estimate of the behavior of the hit ball.

At S15, the trajectory of the hit ball is estimated from the objective variable calculated at S14. The content of the estimated trajectory can include the flying distance in the flight line direction (X direction). FIG. 5(C) shows an example of the trajectory of a hit ball in the direction of the flight line, where the carry (distance in the air) is from position X2 to position X3, and the run (rolling distance on the ground) is from position X3 to position X4. be. The flight distance may be the carry alone, or may be the total value of the carry and the run. In addition, the content of the estimated trajectory can include the deflection of the hit ball in the left-right direction (Y direction). FIG. 5D shows an example of the trajectory of a hit ball in the horizontal direction, and position Y1 is the initial position (hit position) of golf ball 200. FIG. A dashed line in the X direction passing through the position Y1 is the direction in which the ball is to be launched, and the blur when the ball stops on this line is assumed to be 0. In the illustrated example, the trajectory deviates to the left.

Returning to FIG. 6B, in S16, golf equipment suitable for the golfer is selected as a recommended golf product from the estimated value of the behavior of the hit ball calculated in S14 and the trajectory estimated in S15. Recommended items are, for example, golf clubs and balls. In the case of golf clubs, the recommended items may be parts such as shafts and heads, or the entire club. Recommended products basically include products that have characteristics that bring the estimated value of the behavior of a hit ball closer to a predetermined reference value (or ideal value), and those that have characteristics that bring the trajectory of a hit ball closer to a predetermined ideal trajectory. Goods are selected. For example, if the amount of backspin or the amount of sidespin is greater than the ideal values, an article having characteristics that reduce the amount of backspin is selected. If the top and bottom launch angles are less than ideal, articles are selected that have properties that increase the launch angle. If the trajectory has a large left-to-right wobble, then an article is selected that has properties that reduce the left-to-right wobble.

The storage unit 32 stores information for matching the golf equipment with the behavior of the hit ball or the estimation result of the trajectory, and can be used for selecting the recommended equipment in S16. FIG. 7 shows an example of the information for selecting a recommended golf ball. In the example of FIG. 7, the behavior of the hit ball is divided into five regions R1 to R5 with the vertical launch angle and the backspin amount as coordinate axes. Region R5 is a region of ideal behavior with respect to the vertical launch angle and backspin amount. A recommended golf ball corresponding to region R5 is a product with standard specifications. Region R1 is a region of behavior with a high launch angle and a high backspin amount. Region R1 is assigned a golf ball product with specifications that make it more difficult for the ball to hit higher than the standard specification product and that the amount of backspin is suppressed.

Region R2 is a region of behavior with a low launch angle and a high backspin amount. Region R2 is assigned a golf ball product with specifications that allow the ball to be hit more easily and have a lower backspin amount than the standard specification product. Region R3 is a region of behavior with a high launch angle and a low backspin amount. Area R3 is assigned a golf ball product with specifications that increase the backspin amount and make it more difficult for the ball to hit higher than the standard specification product. Region R4 is a region of behavior with a low launch angle and a low backspin amount. Area R4 is assigned a golf ball product having specifications that allow the ball to be hit more easily and increase the backspin amount than the standard specification product.

FIGS. 8A and 8B show another example of information used for selecting recommended products. In the illustrated example, first, the information in FIG. 8(A) or 8(B) is selected according to the initial velocity of the hit ball. For example, if the initial speed is faster than the threshold, the information in FIG. 8A is selected, and if the initial speed is less than or equal to the threshold, the information in FIG. 8B is selected.

In the examples of FIGS. 8A and 8B, the behavior of the hit ball is divided into four regions using the vertical launch angle and the backspin amount as coordinate axes. BC is assigned.

The golf ball product BA is, for example, a golf ball with a soft core and a soft cover, and has a characteristic of being easily spinned. The golf ball product BB is, for example, a golf ball with a soft cover and a hard core, and has the property of being easily spinned. The golf ball product BC is, for example, a golf ball having a soft core and a hard cover, and is a golf ball having the property of being hard to spin.

In the case of a golfer whose initial velocity of a hit ball is faster than the threshold, the force that crushes the golf ball when hit is also large. In the example of FIG. 8A, the area corresponding to the product BB with a hard core is wide, and the area corresponding to the golf ball products BA and BC having soft core characteristics is narrow, making it difficult to select. ing. Also, as the launch angle and backspin amount increase, the recommended golf balls change in the order of products BA, BB, and BC.

In the example of FIG. 8B, in which the initial velocity is equal to or less than the threshold, the recommended golf balls change in the order of products BA, BB, and BC as the launch angle and backspin amount increase, as shown in FIG. ), but the regions corresponding to soft-core products BA and BC are widened, making it easier for these products to be selected.

Returning to FIG. 6B, in S17, the display device 4 displays information related to the current golf swing motion. The displayed information includes the values of the explanatory variables used in the calculation, the values of the objective variables that are the calculation results, the trajectory estimation results of S15, and the recommended products of S16. By the above, one process is completed.

<Second embodiment>
In the first embodiment, attributes of the golfer and attributes of the golf equipment were exemplified as explanatory variables, but the attributes of the golfer and the attributes of the golf equipment are not used as explanatory variables, and the attributes of the golfer and the attributes of the golf equipment A method of setting an arithmetic expression and selecting either one may be used. FIG. 9 is an explanatory diagram of an arithmetic expression.

In the illustrated example, the calculation formula A and the calculation formula B are examples generated according to attributes of golfers, and in particular, are generated separately for males and females. Arithmetic expression A is derived from a data group of golf swing motions of male golfers and a corresponding measured data group of the behavior of a hit ball. Arithmetic expression B is derived from a data group of golf swing motions of female golfers and a corresponding actual measurement data group of the behavior of a hit ball.

Also, the arithmetic expressions M and K are examples generated according to the attributes of the golf equipment. It is generated separately for each golf ball product. The arithmetic expression M is derived from a data group of a golf swing motion of a golfer using the golf ball product X and a corresponding actual measurement data group of the behavior of a hit ball. Calculation formula K is derived from a data group of a golf swing motion of a golfer using the golf ball product Y and a corresponding measured data group of the behavior of a hit ball.

In the present embodiment, when performing the processing of FIG. 6B, the input of information for selecting the type of arithmetic expression (for example, male, female, golf ball product in the example of FIG. 9) is accepted in S11. At S12, an arithmetic expression corresponding to the information input at S11 is read. For example, in the example of FIG. 9, if "man" is input in S11, the arithmetic expression A is read out in S12, and if "golf ball product X" is input in S11, the calculation is performed in S12. Equation M is read. Then, the subsequent processing is performed according to the type of arithmetic expression that has been read.

Note that the distinction between the arithmetic expressions shown in FIG. 9 is an example. The arithmetic expressions may be generated by being distinguished only by the attributes of the golfers, or may be generated by being distinguished only by the attributes of the golf equipment. Alternatively, the attributes may be distinguished and generated by combining attributes of the golfer and attributes of the golf equipment. The combination and the corresponding arithmetic expression can be exemplified by, for example, arithmetic expression X in the case of a male golf ball product A, and arithmetic expression Z in the case of a female golf club A, and the like.

The attribute of the golfer that distinguishes the arithmetic expression is not limited to gender, and may be other attributes such as height, weight, golf history, and handicap. Similarly, the attributes of golf equipment that distinguish calculation formulas are not limited to golf ball products, but include golf club products, head weight, shaft flex, ball layer structure, ball spin characteristics, ball flight characteristics, and other attributes. It can be an attribute.

<Third embodiment>
In the system of FIG. 1, the measuring device 2 and the information processing device 3 are arranged relatively close to each other, and the system can be installed in a shop or the like. However, other configuration examples can also be adopted. Also, a measuring device other than that shown in FIG. 1 can be adopted.

FIG. 10 illustrates another configuration example of the information processing system 1. As shown in FIG. In the configuration example shown in FIG. 1, the information processing device 3 functions as a server and can communicate with communication devices (portable terminal 301, personal computer 302, etc.) via the network 300. FIG. Network 300 is, for example, the Internet.

A configuration example EX1 on the measurement side includes a mobile terminal 301 and a measurement device 2, and is a system suitable for a golfer to personally estimate the behavior of a hit ball. The mobile terminal 301 is, for example, a smartphone, and has a short-range wireless communication function with the measuring device 2 and a wireless communication function via the network 300 and a base station (not shown). The mobile terminal 301 transmits to the information processing device 3 the values of the explanatory variables such as the measurement results received from the measurement device 2 . The information processing device 3 calculates objective variables, and also transmits each piece of information such as trajectory estimation and recommended products to the mobile terminal 301 . The mobile terminal 301 displays the received information. That is, the processes of S11 and S17 in FIG. 6B are executed by the portable terminal 301, and the processes of S12 to S16 are executed by the information processing device 3. FIG.

A configuration example EX2 on the measurement side includes a personal computer 302 and a plurality of measurement devices 2A, and is a system suitable for measuring a golf swing motion in a golf shop or the like. The measuring device 2A is a photographing device such as a video camera. The personal computer 302 has a function of processing images captured by the imaging device 2</b>A and a function of wireless communication via the network 300 . The golfer makes trial shots in a trial hitting room or the like. In a test hitting room or the like, a plurality of photographing devices 2A are used to photograph the test hitter from multiple directions, and the three-dimensional behavior of the golf club 100 is photographed. The captured image is loaded into the personal computer 302 and analyzed to derive the value of the explanatory variable. Furthermore, the personal computer 302 transmits the value of the explanatory variable to the information processing device 3 . The information processing device 3 calculates objective variables, and also transmits information such as trajectory estimation and recommended products to the personal computer 302 . The personal computer 302 displays the received information. 6B are executed by the personal computer 302, and the processes of S12 to S16 are executed by the information processing apparatus 3. FIG.

Although the embodiments of the invention have been described above, the invention is not limited to the above-described embodiments, and various modifications and changes are possible within the scope of the gist of the invention.

1 information processing system, 2 measuring device, 3 information processing device

Claims (11)

Acquisition means for acquiring measurement results of a golfer's golf swing motion;
and computing means for computing the behavior of the hit ball due to the golf swing motion,
The measurement results include the head speed of the golf club head at the time of hitting , the incident angle at the time of hitting , and the face angle at the time of hitting;
The behavior of the hit ball includes initial velocity, vertical launch angle, and backspin amount,
The computing means is
The head speed obtained by the obtaining means and the incidence angle obtained by the obtaining means are added to a predetermined arithmetic expression having a plurality of variables including at least the head speed at the time of hitting the golf club head, the angle of incidence at the time of hitting , and the face angle at the time of hitting. Calculate the behavior of the hit ball by substituting the angle and the face angle,
The acquisition means is
Acquiring an attribute of the golfer and an attribute of the golf equipment used by the golfer in the golf swing motion;
The plurality of variables includes attributes of the golfer and attributes of the golf equipment;
The computing means is
calculating the behavior of the hit ball by substituting the head speed, the incident angle, the face angle, the attribute of the golfer, and the attribute of the golf equipment acquired by the acquisition means into the arithmetic expression;
An information processing device characterized by: Acquisition means for acquiring measurement results of a golfer's golf swing motion;
and computing means for computing the behavior of the hit ball due to the golf swing motion,
The measurement results include the head speed of the golf club head at the time of hitting , the incident angle at the time of hitting , and the face angle at the time of hitting;
The behavior of the hit ball includes initial velocity, vertical launch angle, and backspin amount,
The computing means is
The head speed obtained by the obtaining means and the incidence angle obtained by the obtaining means are added to a predetermined arithmetic expression having a plurality of variables including at least the head speed at the time of hitting the golf club head, the angle of incidence at the time of hitting , and the face angle at the time of hitting. Calculate the behavior of the hit ball by substituting the angle and the face angle,
The acquisition means is
obtaining attributes of said golfer;
As the arithmetic expression, there are a plurality of types of arithmetic expressions according to the attribute of the golfer,
The computing means is
Selecting an arithmetic expression for calculating the behavior of the hit ball from among the plurality of types of arithmetic expressions according to the attribute of the golfer acquired by the acquisition means;
An information processing device characterized by: Acquisition means for acquiring measurement results of a golfer's golf swing motion;
and computing means for computing the behavior of the hit ball due to the golf swing motion,
The measurement results include the head speed of the golf club head at the time of hitting , the incident angle at the time of hitting , and the face angle at the time of hitting;
The behavior of the hit ball includes initial velocity, vertical launch angle, and backspin amount,
The computing means is
The head speed obtained by the obtaining means and the incidence angle obtained by the obtaining means are added to a predetermined arithmetic expression having a plurality of variables including at least the head speed at the time of hitting the golf club head, the angle of incidence at the time of hitting , and the face angle at the time of hitting. Calculate the behavior of the hit ball by substituting the angle and the face angle,
The acquisition means is
Acquiring attributes of golf equipment used by the golfer in the golf swing motion;
As the arithmetic expression, there are a plurality of types of arithmetic expressions according to the attributes of the golf equipment,
The computing means is
selecting an arithmetic expression for calculating the behavior of the hit ball from among the plurality of types of arithmetic expressions according to the attribute of the golf equipment acquired by the acquisition means;
An information processing device characterized by: The information processing device according to any one of claims 1 to 3 ,
further comprising selection means for selecting golf equipment suitable for the golfer based on the behavior of the hit ball calculated by the calculation means;
An information processing device characterized by: The information processing device according to any one of claims 1 to 3 ,
The behavior of the hit ball further includes the left and right launch angles and the amount of side spin,
An information processing device characterized by: The information processing device according to any one of claims 1 to 3 ,
The above formula is
a first data group including the measurement results of a plurality of golfers;
and a second data group that is each actual measurement result of the behavior of the hitting ball due to the golf swing motion of the plurality of golfers, and a formula derived from,
An information processing device characterized by: The information processing device according to claim 6 ,
The arithmetic expression is an expression derived by machine learning using the first data group and the second data group as teacher data,
An information processing device characterized by: The information processing device according to any one of claims 1 to 3 ,
the measurement result includes a hitting position on the face surface of the golf club head;
the plurality of variables includes a hitting position on the face surface of the golf club head;
The computing means is
calculating the behavior of the hit ball by substituting the head speed, the incident angle, the face angle, and the hitting position acquired by the acquiring means into the arithmetic expression;
An information processing device characterized by: an acquisition step in which the computer acquires the measurement result of the golf swing motion of the golfer;
a computing step in which the computer computes the behavior of the ball hit by the golf swing motion,
The measurement results include the head speed of the golf club head at the time of hitting , the incident angle at the time of hitting , and the face angle at the time of hitting;
The behavior of the hit ball includes initial velocity, vertical launch angle, and backspin amount,
In the calculation step,
A predetermined arithmetic expression having a plurality of variables including at least the head speed of the golf club head when hitting , the angle of incidence when hitting , and the face angle when hitting Calculate the behavior of the hit ball by substituting the angle and the face angle,
In the obtaining step,
Acquiring attributes of golf equipment used by the golfer in the golf swing motion;
The plurality of variables includes attributes of the golfer and attributes of the golf equipment;
In the calculation step,
The behavior of the hit ball is calculated by substituting the head speed, the incident angle, the face angle, the attribute of the golfer, and the attribute of the golf equipment obtained in the obtaining step into the arithmetic expression,
An information processing method characterized by: the computer,
Acquisition means for acquiring measurement results of a golfer's golf swing motion;
A program that functions as a calculation means for calculating the behavior of a hit ball due to the golf swing motion,
The measurement results include the head speed of the golf club head at the time of hitting , the incident angle at the time of hitting , and the face angle at the time of hitting;
The behavior of the hit ball includes initial velocity, vertical launch angle, and backspin amount,
The computing means is
The head speed obtained by the obtaining means and the incidence angle obtained by the obtaining means are added to a predetermined arithmetic expression having a plurality of variables including at least the head speed at the time of hitting the golf club head, the angle of incidence at the time of hitting , and the face angle at the time of hitting. Calculate the behavior of the hit ball by substituting the angle and the face angle,
The acquisition means is
Acquiring attributes of golf equipment used by the golfer in the golf swing motion;
The plurality of variables includes attributes of the golfer and attributes of the golf equipment;
The computing means is
calculating the behavior of the hit ball by substituting the head speed, the incident angle, the face angle, the attribute of the golfer, and the attribute of the golf equipment acquired by the acquisition means into the arithmetic expression;
A program characterized by a measuring means for measuring a golfer's golf swing motion;
Acquisition means for acquiring the measurement result of the measurement means;
and computing means for computing the behavior of the hit ball due to the golf swing motion,
The measurement results include the head speed of the golf club head at the time of hitting , the incident angle at the time of hitting , and the face angle at the time of hitting;
The behavior of the hit ball includes initial velocity, vertical launch angle, and backspin amount,
The computing means is
The head speed obtained by the obtaining means and the incidence angle obtained by the obtaining means are added to a predetermined arithmetic expression having a plurality of variables including at least the head speed at the time of hitting the golf club head, the angle of incidence at the time of hitting , and the face angle at the time of hitting. Calculate the behavior of the hit ball by substituting the angle and the face angle,
The acquisition means is
Acquiring attributes of golf equipment used by the golfer in the golf swing motion;
The plurality of variables includes attributes of the golfer and attributes of the golf equipment;
The computing means is
calculating the behavior of the hit ball by substituting the head speed, the incident angle, the face angle, the attribute of the golfer, and the attribute of the golf equipment acquired by the acquisition means into the arithmetic expression;
An information processing system characterized by:

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