JP5584961B2 - Golf club trial hitting system and golf club trial hitting method - Google Patents

Description

  The present invention relates to a golf club trial hitting system and a golf club trial hitting method used for golf club trial hits performed when selecting a golf club, and in particular, to specific behavior parameters of a golf ball, for example, left and right launch angles. The present invention relates to a golf club trial hitting system and a golf club trial hitting method that specify behavior parameters of a golf club head that are closely related to, and display the parameters.

At the time of purchasing a golf club, a plurality of golf clubs having different specifications are trial-struck, the hitting direction and flight distance are measured, the obtained hitting direction and flight distance are referred to, and further, at the time of the test hit The golf club is selected in consideration of the feeling of the golfer.
In addition to the above, various golf club selection methods have been proposed (see Patent Document 1).

In the method of selecting a golf club disclosed in Patent Document 1, a golf ball is hit with a club that a golfer has used to play so far, and the head speed value, initial speed, launch angle, and backspin amount at this time are hit. , Get side spin amount and flight distance. Then, based on the obtained head speed value, the ideal initial speed, launch angle, back spin amount, side spin amount, and flight distance of the golfer are acquired.
Then, a guideline indicating how to change a golf club with which the player is accustomed can obtain a hit ball data value close to an ideal hit ball data value.

JP 2003-57258 A

  However, in Japanese Patent Application Laid-Open No. H10-228707, a guideline indicating how to obtain a hitting ball data value close to an ideal hitting ball data value is shown, but this guideline is for a mathematical expression for obtaining an ideal hitting ball data value. However, it is not based on the behavior of the golf club head. As described above, the pointer described in Patent Document 1 does not necessarily reflect the behavior of the golf club head when the golfer swings. Even if the golf club is changed in accordance with this guideline and a test is hit, an ideal hit ball There is a problem that data values cannot be obtained.

  An object of the present invention is to eliminate a problem based on the prior art, specify a golf club head behavior parameter deeply related to a specific behavior of the golf ball, and display the parameter of the golf club trial hitting system. It is another object of the present invention to provide a golf club trial hitting method.

In order to achieve the above object, according to a first aspect of the present invention, when a golfer hits one golf ball with a golf club, the golf club head has at least two behavior parameters indicating behavior immediately before hitting. A golf club head behavior measuring unit to measure,
When the golfer hits a golf ball with the golf club, the golf club head behavior measurement unit measures at least one behavior parameter indicating the behavior of the golf ball after hitting the hit golf ball. A golf ball behavior measuring unit;
Of the behavior parameters of the golf ball, association is made between at least two of the behavior parameters of the golf ball and the behavior parameters of the golf club head, and based on the association, the association with the particular behavior parameter of the golf ball A golf club trial hitting system is provided that includes a processing unit that displays the behavior parameter of the golf club head having a high value on the display unit in a manner different from that of the other behavior parameter.

In the present invention, it is preferable that a correlation coefficient is used for associating the specific behavior parameter with the at least two behavior parameters of the golf club head by the processing unit.
In the present invention, at least two behaviors of the golf club head with respect to the specific behavior parameter are associated with the specific behavior parameter and at least two behavior parameters of the golf club head by the processing unit. Preferably regression analysis using parameters is used.

In the present invention, the specific behavior parameter of the golf ball is a vertical launch angle or a lateral launch angle, and the behavior parameter of the golf club head is an entrance angle of the golf club head, the golf club head It is preferable that at least two of the angle of the face surface (face angle, loft angle, etc.) and the hit point position on the face surface of the golf club head.
Further, in the present invention, the specific behavior parameter of the golf ball is a backspin amount or a side spin amount, and the behavior parameter of the golf club head is an entry angle of the golf club head, a face of the golf club head It is preferable that there are at least two of a surface angle (face angle, loft angle, etc.) and a hit point position on the face surface of the golf club head.

In addition, according to the second aspect of the present invention, when a golfer hits a golf ball with a golf club, the golf club head measures at least two behavior parameters indicating a behavior immediately before hitting and is hit. a step of at least one measuring the behavior parameter indicative of the behavior of a golf ball after impact of the golf ball was among the behavior parameters of the golf ball, and a specific behavior parameters, at least two of the behavior parameters of the golf club head And a step of displaying the behavior parameter of the golf club head that is highly related to the specific behavior parameter of the golf ball based on the association with another behavior parameter. A golf club trial hitting method characterized by comprising: .

In the present invention, it is preferable that a correlation coefficient is used for associating the specific behavior parameter with at least two behavior parameters of the golf club head.
In the present invention, the correlation between the specific behavior parameter and the at least two behavior parameters of the golf club head is a regression using at least two behavior parameters of the golf club head with respect to the specific behavior parameter. Preferably analysis is utilized.

In the present invention, the behavior parameters of the golf ball include, for example, head speed, ball speed, golf ball launch angle, golf ball left and right launch angle, golf ball back spin amount, golf ball side spin amount, golf ball The carry distance of the ball, the right / left deviation of the golf ball, and the total distance of the golf ball.
The behavior parameters of the golf club head include, for example, a face speed immediately before hitting, an approach angle of the golf club head before hitting in the vertical direction with respect to the golf ball, and an approach angle of the golf club head before hitting in the horizontal direction with respect to the golf ball. , Dynamic loft, face angle, lie angle, vertical spot position on the face surface, and horizontal spot position on the face surface.

According to the present invention, when a golf ball is hit, among the behaviors of golf club heads that cause a specific behavior of the golf ball after the ball is hit, Identify the ones with high characteristics and display them with different behavior parameters. Thereby, the golfer or the operator can easily know the behavior parameter of the golf club head that causes the specific behavior of the golf ball. Moreover, the golf club head behavior parameters that are highly relevant are always displayed separately. For this reason, regardless of the skill of the golfer or operator, the behavior parameter of the golf club head that causes the specific behavior of the golf ball can be determined.
Furthermore, among the golf club head behavior parameters that cause a specific behavior of the golf ball, highly relevant ones are identified and displayed separately, so even if the number of parameters to be measured increases, the golfer or operator The golfer or operator can easily know the relevant golf club head behavior that causes the specific behavior of the golf ball, and the golfer or operator understands the golf ball or golf club head behavior parameters. It does not depend on the degree (skill).

Hereinafter, a golf club trial hitting system and a golf club trial hitting method according to the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings.
FIG. 1 is a schematic view showing a golf club trial hitting system according to an embodiment of the present invention.
FIG. 2 is a schematic block diagram showing a golf club trial hitting system according to an embodiment of the present invention.

The golf club trial hitting system 10 shown in FIG. 1 (hereinafter referred to as the system 10) is configured such that when the golfer G grips the golf club 24 and swings and hits the golf ball b in the hitting direction a. b has a function of measuring the behavior of the golf club head 28 before and after hitting (before and after impact) and the behavior of the golf ball b after hitting (after impact).
In the system 10, every time the golfer G hits one golf ball b, the behavior parameter (measurement item) of the golf ball b and the behavior parameter (measurement item) of the golf club head 28 are measured together.
Further, in the system 10, the golf ball b is based on the function of associating a specific one of the behavior parameters of the golf ball b with at least one of the behavior parameters of the golf club head 28, and the association. A function of displaying on the monitor 20 the behavior parameters of the golf club head 28 that are highly related to the predetermined behavior parameters.

  In the system 10 of the present embodiment, the golf club head behavior measuring device 12 that measures the behavior of the golf club head 28, the golf ball behavior measuring device 14 that measures the behavior of the golf ball b, and the golf club head behavior measuring device 12. In addition, the golf club head behavior measuring device 12 and the golf ball behavior measuring device are processed, and the golf club head behavior measuring device 12 and the golf ball behavior measuring device are processed. 14 includes a processing device 16 having a function of displaying the measurement data obtained in 14.

In the present invention, the behavior parameters of the golf ball b are, for example, head speed, ball speed, launch angle, left and right launch angle, back spin, side spin, carry, left and right shift, and total distance.
Further, the behavior parameters of the golf club head 28 are, for example, face speed, vertical approach angle, horizontal approach angle, dynamic loft, face angle, lie angle, vertical spot position, and horizontal spot position. .

The processing device 16 is configured by a computer and includes a processing unit 18, a monitor 20, and an operation unit 22.
The monitor 20 displays the behavior parameter of the golf ball b and the behavior parameter of the golf club head 28 measured in the system 10 in a table format or with a figure. As the monitor 20, various types that are generally used in personal computers can be used.
The operation unit 22 is a mouse and a keyboard, and has the same general functions as those provided in a personal computer. The setting of the golf ball head behavior measurement condition and the condition of the golf club head behavior measurement item are described later. It is used for various input settings such as setting and setting of a display screen displayed on the monitor 20.
The operation unit 20 is used as input means for setting conditions for associating the behavior parameters of the golf ball b and the behavior parameters of the golf club head 28.

  As shown in FIG. 2, the processing unit 18 includes a first processing unit 30, a second processing unit 32, a storage unit 34, a data processing unit 36, a setting unit 38, and a control unit 40, and the first processing unit 30, The second processing unit 32, the storage unit 34, the data processing unit 36 and the setting unit 38 are controlled by the control unit 40.

The first processing unit 30 is connected to the golf club head behavior measuring device 12. The first processing unit 30 will be described in detail later.
The second processing unit 32 is connected to the golf ball behavior measuring device 14. The second processing unit 32 will be described in detail later.

  The storage unit 34 is connected to the first processing unit 30 and the second processing unit 32, and stores various parameters obtained by the first processing unit 30 and the second processing unit 32, as will be described later. It is.

The data processing unit 36 uses various parameters obtained by the first processing unit 30 and the second processing unit 32, and various golfs obtained by the golf ball behavior measuring device 14 as will be described in detail later. Of the behavior parameters of the ball b, a specific parameter is associated with at least one of the behavior parameters of the golf club head 29 obtained by the golf club head behavior measuring device 12.
Based on this association, the data processing unit 36 distinguishes the behavior parameter of the golf club head 28 that is highly related to the specific behavior parameter of the golf ball b from the other behavior parameters by changing the display. It is also what you want to display.

In the data processing unit 36, for example, a correlation coefficient is used for associating a specific behavior parameter among the behavior parameters of the golf ball b and at least one of the behavior parameters of the golf club head 28. Those having a large correlation coefficient value have high relevance, and some of these correlation coefficient values having a large correlation coefficient are displayed on the monitor 20 with different colors, for example. Moreover, it is not limited to this, You may make it display only a thing with a large value of a correlation coefficient.
In the present embodiment, for example, the behavior parameters of the top three golf club heads 28 having a large correlation coefficient value among the behavior parameters of the golf club head 28 with respect to the left and right launch angles are colored on the monitor 20. Change to display.
Further, the data processing unit 36 displays behavior parameters obtained by the golf club head behavior measuring device 12 and the golf ball behavior measuring device 14 on the monitor 20.

  When the correlation coefficient is used for the association described above, the setting unit 38 sets, for example, the number of behavior parameters to be displayed on the monitor 20 while changing the color, and this number is set via the operation unit 22. The

Next, the golf club behavior measuring device 12 of the system 10 will be described.
FIG. 3 is a schematic block diagram showing the golf club behavior measuring device of the golf club trial hitting system according to the embodiment of the present invention.
The golf club head behavior measuring device 12 (hereinafter referred to as the behavior measuring device 12) shown in FIG. 3 is a golf ball b at the time of golf swing in which the golfer G holds the golf club 24 and strikes the golf ball b in the striking direction a. This is a device for measuring the behavior of the golf club head 28 before and after launching.

  The behavior measuring apparatus 12 includes cameras 50 and 52, illumination light sources 54 and 56, and a controller 58 that controls the cameras 50 and 52 and illumination light sources 54 and 56.

As the cameras 50 and 52, for example, a high-speed video camera or a high-speed shutter camera that takes images at a time interval of 1/2000 second is used.
The illumination light sources 54 and 56 are, for example, strobes or infrared projectors, and are attached to the cameras 50 and 52.
The controller 58 controls the photographing timing and photographing time interval of the cameras 50 and 52 and the light emitting timing, light emitting time and light emitting interval of the illumination light sources 54 and 56.

The camera 50 and the illumination light source 54 are arranged in the upper front direction from the position facing the golfer G so as to photograph the golf club head 28 before and after the golf ball b is launched, and the golf club head 28 illuminated by the illumination light source 54 is used. Is photographed with the camera 50. The camera 52 and the illumination light source 56 are arranged in a rear upward direction from a position facing the golfer G so as to photograph the golf club head 28 before and after the golf ball b is launched, and are illuminated by the illumination light source 56. Is photographed by the camera 52.
In the present embodiment, the golf club head 28 before and after launching the golf ball b is photographed from two different directions, but in the present invention, at least two different directions such as three different directions, four directions,... The golf club head 28 may be photographed.

  The arrangement positions of the camera and the illumination light source are not particularly limited as long as the golf club head 28 can be photographed from at least two different directions. For example, the camera 50 and the illumination light source 54 are arranged in the front upper direction facing the golfer G across the tee for teeing up the golf ball b, while the camera 52 and the illumination light source 56 are rearward from the position facing the golfer G. It may be arranged in the upward direction. Further, the camera 50 and the illumination light source 54 may be disposed in the upper front direction from the position facing the golfer G, and the camera 52 and the illumination light source 56 may be disposed in the upper front direction of the position facing the golfer G.

  The controller 58 controls the cameras 50 and 52 so that the cameras 50 and 52 continuously shoot at a constant interval at the same time, that is, at a predetermined time interval at the same timing. The illumination light sources 54 and 56 are controlled to be turned on.

  In addition, the controller 58 AD-converts an image signal of an image (captured image) obtained by continuous multiple shooting at a fixed time interval with the cameras 50 and 52 to obtain one-screen digital image data. It has a storage part (not shown) for storing image data after performing dark correction or the like on the image data. Image data of images that have been continuously shot multiple times is called from the storage portion and supplied to the first processing unit 30 described later. In this way, images of a plurality of markers viewed from at least two different directions are acquired as one image.

FIG. 4A is a schematic diagram showing an example of an arrangement position of a marker provided on a wood-type golf club head, and FIG. 4B is an example of an arrangement position of a marker provided on an iron-type golf club head. It is a schematic diagram to show, (c) is a schematic diagram which shows the example of a marker.
For example, as shown in FIG. 4A, in a wood type golf club 24 having a golf club shaft 26 and a golf club head 28, markers 70a to 70c are provided on the crown portion 28a of the golf club head 28. They are arranged to form the vertices of an equilateral triangle.
As shown in FIG. 4B, in an iron-based golf club 24 a having the golf club shaft 26 and the golf club head 72, the golf club head 72 in contact with the striking surface 72 a of the golf club head 72. Markers 70 a to 70 c are provided on the upper end surface 72 b and the hosel part 74.

  The marker is provided, for example, on at least one of the upper end surface and the side end surface of the golf club head that is in contact with the striking surface that strikes the golf ball, and is provided on the hosel portion of the golf club head. Furthermore, the markers are provided in at least three or more places on the golf club head, and the arrangement positions are set so that these markers form a vertex of the triangle and do not rest on one straight line.

  For example, the markers 70a, 70b, and 70c are illumination lights of the illumination light sources 54 and 56 so that the images of the markers 70a, 70b, and 70c can be always identified in one image that is captured by the cameras 50 and 52 and collected on one screen. It is the structure which has the retroreflection function which reflects in the illumination direction. For example, the markers 70a, 70b, and 70c are obtained by cutting a known retroreflective sheet into a predetermined shape.

In the present embodiment, in order to obtain the marker position as will be described later, for example, marker feature points obtained from the marker are used. This marker feature point is a point that characterizes the marker.
For example, as shown in FIG. 2C, when the markers 70a to 70c have a circular shape, the center points of the circular shapes are set as marker feature points 61a to 61c, and the positions are extracted by the image processing unit 62 described later. The

In the present invention, in addition to the circular markers 70a, 70b, and 70c of the present embodiment shown in FIG. 4C, for example, a regular polygon such as a regular triangle or a square can be used. . In this case, the position of the extracted marker feature point can be the center point (centroid point) of the marker in the case of each regular polygon.
Moreover, the shape of each marker does not need to be the same, The thing of the above-mentioned shape can also be combined freely. Also in this case, each marker feature point of each marker is, for example, the center point (center of gravity) of the marker.

The first processing unit 30 captures image data of images taken by the cameras 50 and 52, and the behavior parameters of the golf club head 28 from the digital image data of the golf club head 28 during golf swing, for example, face speed, up and down Direction approach angle (hereinafter also referred to as approach angle (up / down)), left / right approach angle (hereinafter also referred to as approach angle (left / right)), dynamic loft, loft angle, face angle, lie angle, vertical hit position (Hereinafter also referred to as a hit point (up and down) or a hit point position (up and down)) and a left and right hit point position (hereinafter also referred to as a hit point (left and right) or a hit point position (left and right)).
As shown in FIG. 3, specifically, the first processing unit 30 includes a signal processing unit 60, an image processing unit 62, an analysis unit 64, an output unit 66, and a memory 68.
The signal processing unit 60, the image processing unit 62, the analysis unit 64, and the output unit 66 are portions that function by executing a program. In the present invention, these portions are configured by hardware such as a circuit. It may be a thing.
Note that each function of the first processing unit 30 is managed and controlled by the control unit 40.

  For example, the signal processing unit 60 can extract the marker feature points 71a, 71b, and 71c from the images of the markers 70a, 70b, and 70c in the image, for example, the data values of the image portions of the markers 70a, 70b, and 70c. This is a portion that performs brightness correction and contrast correction of image data under predetermined processing conditions, and further performs gradation processing of a predetermined number of gradations so that only the data values are distinguished from the data values of other portions.

  The image processing unit 62 is a part that specifies the position of the marker feature point from the image data of the golf club head 28 during the golf swing, and calculates the behavior of the golf club head 28 using the specified position. The image processing unit 62 specifies the marker feature points of the images of the markers 70a, 70b, and 70c and extracts the positions in the three-dimensional coordinate system, and the three-dimensional coordinate positions of the extracted marker feature points. Is used to calculate the time series data of the position and orientation of the golf club head 28.

The extraction unit 62a identifies image portions of the markers 70a, 70b, and 70c from the image that has been subjected to the gradation processing of a predetermined number of gradations, and extracts the position thereof.
Furthermore, the extraction unit 62a associates the images of the respective markers 70a, 70b, and 70c photographed in two directions, and the markers 70a, 70b, and 70c photographed by the cameras 50 and 52 at the same time. Identify the image.
Next, in the extraction unit 62a, the marker feature points 71a to 71c for the images of the markers 70a, 70b, and 70c in the images taken from different directions at the same time taken by the cameras 50 and 52 at the same time. Each position coordinate is obtained. Using the position coordinates of the obtained marker feature points 71a to 71c as the position coordinates of the marker, the position coordinates in a three-dimensional coordinate system that defines the space through which the golf club head 28 passes are obtained, and each marker feature is obtained. The point is configured to extract a position in a three-dimensional coordinate system.
Since the shooting directions of the cameras 50 and 52 are known, the information representing the two-dimensional position coordinates in the images shot by these cameras 50 and 52 is obtained, thereby representing a space through which the golf club head 28 passes. The position in the three-dimensional coordinate system (three-dimensional position coordinates) can be obtained.

  When the images of the markers 70a, 70b, 70c are taken at a predetermined time interval, for example, a time interval of 1/2000 second, each of the images of the markers 70a, 70b, 70c every 1/2000 second is taken. The time-series data of the three-dimensional position coordinates of the marker feature points 71a to 71c (the center point of the marker) can be obtained.

The calculation unit 62b is a part that calculates the position and orientation of the golf club model as time-series data from the three-dimensional position coordinates obtained by the extraction unit 62a.
Specifically, the golf club head three-dimensional shape model data (CAD data) and information on the positions of corresponding points on the three-dimensional shape model corresponding to the positions of the marker feature points are stored in the memory 68 in advance. The stored data and information are called, and the position coordinates of the corresponding points on the three-dimensional shape model in the three-dimensional coordinate system coincide with the three-dimensional position coordinates of the marker feature points extracted by the extraction unit 62a. As described above, the position and orientation of the three-dimensional shape model are calculated, and the time series data of the position and orientation of the golf club head are calculated using the position and orientation as the position and orientation of the golf club head.

Fig.5 (a) is a schematic diagram which shows the time history of the movement of the marker of the time interval of 1/2000 second determined from the three-dimensional position coordinate of a marker feature point, (b) is FIG.5 (a). It is a schematic diagram which shows the behavior of a golf club head based on the time history of the movement of the marker shown in FIG.
In FIG. 5 (a), an XYZ representing a golf ball launch direction as an X direction, a direction perpendicular to the direction, a direction parallel to the ground as a Y direction, and a direction perpendicular to the ground as a Z direction in FIG. Coordinate system. Point ε is the launch position of the golf ball.
In FIG. 5A, three plot groups M ₁ and M _{2 to} M ₁₀ representing three markers are positions of three marker feature points extracted from markers photographed at a time interval of 1/2000 _second. Indicates.
Furthermore, as shown in FIG. 5B, the movement of the golf club head is continuously displayed by associating the golf club head with the three plot groups M ₁ and M _{2 to} M ₁₀ representing the markers. Thus, the change in the position of the golf club head and the orientation of the face can be known.

The analysis unit 64 uses the calculated time series data of the position and orientation of the golf club head 28 as a behavior parameter of the golf club head 28, for example, in the vertical direction on the striking surface (face surface) of the golf club head 28. In addition, this is a part for calculating the hit point position of the golf ball b in the left-right direction and the head speed (face speed) at the hit point position.
Further, the analysis unit 64 calculates a dynamic loft, a face angle, and a lie angle as behavior parameters of the golf club head 28 from the orientation of the face surface 28b (striking surface) of the golf club head 28 at the hitting point position, and further It is also a part for calculating the approach angle (the moving direction of the golf club head 28) in the vertical direction and the horizontal direction of the golf club head 28 before and after hitting.
For example, the head speed is calculated using time series data of the marker 70b.
In the present embodiment, for example, the hit position of the golf ball on the hitting surface of the golf club head can be specified with an accuracy within ± 0.5 (mm), for example. Further, the head speed at the hit point position can be calculated, and the change in the head speed can be calculated with an accuracy within ± 0.5 (m / sec), for example.

The output unit 66 instructs the storage unit 34 to output the calculated calculation result of the behavior parameter of the golf club head 28.
The memory 68 is a part that stores and holds the above-described image data and CAD data.

  Note that the images obtained by the first processing unit 30 (photographed images), signal-processed images, and marker movement times as shown in FIGS. 5 (a) and 5 (b). The control unit 40 causes the monitor 20 to display the history, the three-dimensional shape model, or the behavior of the golf club head expressed using the three-dimensional shape model. Further, an input screen for setting the processing conditions to be applied to the image, and the results obtained for each part may be displayed on the monitor 20.

In the present embodiment, as described above, the crown 28a of the golf club head 28 is provided with three markers 70a, 70b, and 70c having a circular shape from which a center point is extracted as a marker feature point.
The golf club head 28 is placed in a predetermined address state. In this state, the still images are taken by the cameras 50 and 52, and the three markers 70a and 70b of the golf club head 28 are extracted by the extraction unit 62a of the first processing unit 30. , 70c is accurately obtained. The information on the arrangement position is stored in the memory 68 as a corresponding point on the three-dimensional shape model constituted by CAD data. The arrangement position information is, for example, three-dimensional position coordinates with the center of gravity of the golf club head 28 as the origin.
The information on the arrangement positions of the three markers 70a, 70b, 70c on the golf club head 28 is obtained more accurately by using a three-dimensional shape measuring instrument using a laser beam different from the behavior measuring device 12. It may be stored in advance in the memory 68 of the first processing unit 30.

Next, a behavior measuring method for a golf club head by the behavior measuring device 12 of the present embodiment will be described.
First, when the golfer G grips the golf club 24 and performs a golf swing, the golf club head 28 before and after the golf ball b in the golf swing is shot with the cameras 50 and 52.
Images taken by the cameras 50 and 52 are subjected to predetermined processing by the signal processing unit 60 and supplied to the image processing unit 62 as digital image data.

In the image processing unit 62, a first group of images of the markers 70a to 70c photographed from one direction and a second group of images of the markers 70a to 70c photographed from the other direction by the extraction unit 62a. Are associated with the images of the markers 70a to 70c.
Next, the positions of the marker feature points of the images of the markers 70a, 70b, and 70c are extracted as three-dimensional position coordinates in the XYZ coordinate system.

  Next, the three-dimensional position coordinates in the XYZ coordinate system of the three corresponding points corresponding to the arrangement positions of the marker feature points of the images of the three markers 70a, 70b, 70c on the three-dimensional shape model reproducing the golf club head 28 However, the time-series data of the position and orientation of the three-dimensional shape model is calculated so as to coincide with the three-dimensional position coordinates of the marker feature points. This time series data is the time series data of the position and orientation of the golf club model.

  From the calculated time series data, the golf ball hitting position on the face surface 28b (striking face) of the golf club head 28 is specified, the head speed (face speed) at this hitting spot position, the vertical approach angle, and the lateral direction The approach angle, the angle of the face surface 28b of the golf club head 28 (dynamic loft (effective loft angle of the golf club head 28), loft angle, face angle), lie angle, vertical hit position, and horizontal hit position are calculated. Is done. In this case, the movement history of the marker as shown in FIG. 5B may be displayed on the monitor 20 by the behavior of the golf club head expressed using a three-dimensional shape model.

Next, the golf ball behavior measuring device 14 will be described.
FIG. 6 is a schematic diagram showing a golf ball behavior measuring device of a golf club trial hitting system according to an embodiment of the present invention.

  A golf ball behavior measuring device 14 (hereinafter referred to as a measuring device 14) shown in FIG. 6 is used together with the behavior measuring device 12. When the golfer G hits the golf ball b with the golf club 24, The initial ballistic parameters of the golf ball b are measured, and the golf ball b has a function of measuring, for example, head speed, ball speed, launch angle, left and right launch angle, back spin, and side spin. Furthermore, it also has a function of calculating carry, left / right shift, and total distance.

The measuring device 14 includes mirrors 82 and 84, an adjustment mirror 86, a half mirror 88, and a CCD camera 90, and is connected to the second processing unit 32. The CCD camera 90 is controlled by the controller 106 of the second processing unit 32. The CCD camera 90 is controlled by the controller 106 to automatically open and close the electronic shutter for imaging at a predetermined timing.
On the surface 80a of the substrate 80, mirrors 82 and 84, an adjustment mirror 86, a half mirror 88, and a CCD camera 90 are arranged as will be described later.

  The surface 80a of the substrate 80, the mirrors 82 and 84, the adjustment mirror 86, the half mirror 88, and the CCD camera 90 constitute a main body 92, and the main body 92 is accommodated in a case (not shown), for example. It is portable. The main body 92 accommodated in the case is arranged at a position facing the golfer G who tries the golf ball b and the golf ball b.

  The measuring apparatus 14 of the present embodiment fixes each arrangement, and stores it in an arbitrary case in which the surfaces through which the two subject images projected on the two mirrors 82 and 86 pass are covered with a transparent body. It can be made portable and can be easily moved and installed in any location. Of course, in addition to this, a strobe device that illuminates the golf ball at the time of imaging the golf ball, or a natural or artificial light illuminating device having sufficient brightness to illuminate the golf ball in some cases is used.

  The controller 106 is connected to the CCD camera 90 and is connected to the second processing unit 32 so that image data of an image output from the CCD camera 90 is supplied to the second processing unit 32.

The mirrors 82 and 84 are mirrors that reflect an image of the golf ball b when the golf ball b is viewed from two different directions, and are arranged in the front-rear direction of the launch direction of the golf ball b (right direction (X direction) in FIG. 6). ing.
The golf ball b is launched in the launch direction by the trial hit of the golfer G, but the image of the golf ball b immediately after being launched is reflected by the mirror 84 and projected onto the half mirror 88, and the projected golf ball b The image is configured to pass through the half mirror 88 and reach the CCD camera 90.
Further, the image of the golf ball b immediately after being launched is reflected by the mirror 82, and then reflected by the adjustment mirror 86, and the image of the golf ball b reflected by the adjustment mirror 86 is further reflected by the half mirror 88. The CCD camera 90 is configured.

When such two golf ball b images are taken by the CCD camera 90, the mirrors 82, 84 or the adjustment mirror 86 are arranged so that the images of the golf balls b viewed from different directions do not overlap as much as possible. The arrangement has been adjusted.
In addition, since the adjustment mirror 86 of the present embodiment reflects the image projected together with the mirror 82 and the half mirror 88, the image of the golf ball b captured by the CCD camera 90 is a mirror image of the golf ball b. On the other hand, the image of the golf ball b reflected by the mirror 84 and transmitted by the half mirror 88 and reaching the CCD camera 90 is also a mirror image. In this way, the adjustment mirror 86 is an adjustment mirror for making the image of the golf ball b reflected by the mirror 82 and reaching the CCD camera 90 into a mirror image, and is reflected by the mirror 84 and reaches the CCD camera 90. Similar to the image of the ball b, it is a mirror image.

FIG. 7 shows an example of a planar image taken by the CCD camera 90.
The planar image 110 shown in FIG. 7 records four golf ball images 112, 114, 116, and 118 obtained by imaging the golf ball b immediately after being shot twice at regular time intervals. .

Here, the golf ball image 112 is an image of the golf ball b by the first (first) strobe emission reflected by the mirror 82, the adjustment mirror 86, and the half mirror 88, and the golf ball image 116 is the mirror. 8 is an image of the golf ball b reflected by 84 and transmitted through the half mirror 88 by first strobe light emission.
On the other hand, the golf ball image 114 is an image of the golf ball b by the second strobe emission reflected by the mirror 82, the adjustment mirror 86, and the half mirror 88, and the golf ball image 118 is reflected by the mirror 84. It is an image of the golf ball b by the second strobe emission that has passed through the half mirror 88.
Here, in the planar image 110, the tilt angle of the reflecting surface of the mirrors 82 and 84 or the adjustment mirror 86 is arranged so that the golf ball image 112 is captured on the lower side and the golf ball image 116 is captured on the upper side. Adjustments have been made.
In addition, using the adjustment mirror 86, the image of the golf ball b picked up is a mirror image, and the image of the golf ball b moves in the same direction in FIG.

  Incidentally, white circles, black circles and cross-shaped marks 120 are given as specific points on the surface of the golf ball b. As shown in FIG. 7, the white circles, black circles and cross-shaped marks 120 are clearly visible. Yes. The mark 120 is used to calculate the back spin and side spin of the golf ball b as will be described later.

As illustrated in FIG. 6, the second processing unit 32 includes an image reading unit 100, a position measurement unit 102, a calculation unit 104, and a controller 106.
The image data of the planar image 110 captured by the CCD camera 90 is sent to the second processing unit 32.

  The image reading unit 100 captures image data of the planar image 110 captured by the CCD camera 90 as digital data, and performs image processing to erase unnecessary images such as the surrounding environment. The image is subjected to image processing to calculate the position of the center of gravity of the golf ball images 112, 114, 116, and 118, and then the image of the image of the mark 120 formed on the golf ball is subjected to image processing. This is a part that calculates the center position of the image and outputs it to the position measurement unit 102.

When the position measurement unit 102 receives the data of the center of gravity of the golf ball images 112, 114, 116, and 118 and the center position of the image of the mark 120, a vertical plane and a horizontal plane in the actual movement path of the golf ball b are input. This is a part for calculating the component.
That is, as shown in FIG. 6, since the two mirrors 82 and 84 are inclined by an arbitrary angle, the golf ball image in the image projected by the mirrors 82 and 84 and captured as the planar image 110. The coordinates of the center of gravity positions 112, 114, 116, and 118 and the coordinates of the center position of the image of the mark 120 are obtained by combining vertical and horizontal components according to the inclination angles of the mirrors 82 and 84. Therefore, depending on the arrangement of the mirrors 82 and 84, the numerical values of the coordinates of the center of gravity of the golf ball images 112, 114, 116, and 118 and the coordinates of the center position of the image of the mark 120 are components of the vertical plane and the horizontal plane. Compute and disassemble. Then, the coordinates of the center of gravity of the golf ball at the time of the first strobe light emission, the coordinates of the center position of the mark 120 with respect to this center of gravity position, and the second strobe light emission time for each of the vertical plane and horizontal plane components obtained by the decomposition. The coordinates of the gravity center position of the golf ball and the coordinates of the center position of the mark 120 with respect to this gravity center position are measured. Each measured coordinate is sent to the calculation unit 104.

The calculation unit 104 calculates a behavior parameter indicating the behavior of the golf ball b after hitting, and the coordinates of the center of gravity of the golf ball b and the center position of the mark 120 at the time of first and second strobe light emission. The initial velocity (ball speed), vertical and horizontal launch angles of the golf ball are calculated by obtaining the moving distance and moving direction of the center of gravity of the golf ball b from the coordinates.
The calculation unit 104 is a part that calculates the rotation angular velocity and the rotation direction of the golf ball b by calculating the movement distance and movement direction of the center position of the mark 120 to calculate the back spin and the side spin.

  The calculation unit 104 estimates the flight distance of the golf ball, for example, by adding an environmental condition such as the wind speed at the time of the test shot to the initial velocity, launch angle, rotation direction, and rotation angle of the golf ball. A golf ball carry, run, slice, or hook bend may be estimated, a final flight distance (total distance) or bend amount (left / right misalignment) may be calculated, and the calculation result may be displayed on the monitor 20. Here, the delivery of data for these operations and the operation instructions are controlled by the controller 106.

  The measuring device 14 attaches a black circle or cross-shaped mark 120 as a mark to the golf ball b as a mark in order to measure the rotational angular velocity and direction of rotation such as back spin and side spin of the launched golf ball. Then, the rotational angular velocity and direction of the golf ball are measured based on the distance and direction of movement of the mark 120 on the surface of the golf ball b.

Next, a method for measuring the behavior parameter of the golf ball b in the measuring device 14 will be described.
In the measuring device 14, when the golf club G starts swinging the golf club 24 and the golf club head of the golf club 24 passes a detection position of a golf club head detection device (not shown) installed in the area immediately before the impact, the trigger signal Is generated in the golf club head detection device. And it is sent to the controller 106 from a golf club head detection apparatus.
In the controller 106, as the electronic shutter of the CCD camera 90 is opened from the rising of the trigger signal after _{one second,} T, camera actuation signal is generated and sent to the CCD camera 90 by the camera operation signal, ₂ seconds electronic shutter is T open.

At the same time, a strobe light emission signal is sent from the controller 106 to a strobe (not shown), and the strobe light is emitted twice at a time interval of T ₃ seconds during the T ₂ seconds when the electronic shutter is opened (step 106). Illuminate. By two flash emission of T ₃ seconds manner, it punched out which is the initial trajectory is captured golf ball b in immediately after, the golf ball b 1 single planar image image is captured of the before and after time elapse of T ₃ seconds 110 Is obtained.

At the same time, the head speed of the golf club 24 is measured by a head speed measuring device (not shown). The head speed measuring device may be a device different from the measuring device 14 of the present embodiment, and two sensors are arranged at a predetermined interval on the golf club head detecting device. The head speed of the golf club may be measured by the time interval at which the club head is detected.
The obtained data such as the head speed of the golf club is output to the storage unit 34.

  Next, the image data of the planar image obtained by imaging the initial trajectory of the obtained golf ball b is read as digital data by the image reading unit 100, and unnecessary images such as the surrounding environment are erased. The image of the diameter is subjected to image processing, and the barycentric positions of the golf ball images 112, 114, 116, and 118 are calculated. At the same time, the image of the image of the mark 120 formed on the golf ball b is subjected to image processing, and the center position of the image of the mark 120 is calculated.

These positions are measured by the position measurement unit 102, the behavior parameters indicating the behavior of the golf ball b described above are calculated by the calculation unit 104, and the behavior parameter data is stored in the storage unit 34.
In addition, by calculating the behavior parameters by adding environmental conditions such as wind speed at the time of trial hit, the flight distance of the golf ball is estimated, and the golf ball carry, run, slice, hook curvature is estimated, carry, The left / right deviation (bending amount) and the final flight distance (total distance) are calculated. This calculation result is also stored in the storage unit 34 as behavior parameter data.

As described above, in the system 10 of the present embodiment, the behavior parameters indicating the behavior of the golf club head 28 (face speed, vertical approach angle, lateral approach angle, dynamic loft, face angle, lie angle, vertical Direction hit point position, left and right hit point position) and behavior parameters indicating the behavior of the golf ball b (head speed, ball speed, launch angle, left and right launch angle, backspin, side spin, carry, left / right misalignment, total distance) ) Can be measured.
In the system 10 of the present embodiment, behavior parameter data indicating the behavior of the golf club head 28 obtained by the first processing unit 30 of the processing unit 18 and the behavior of the golf ball b obtained by the second processing unit 32. The behavior parameter data indicating is input to the storage unit 34 and stored therein.

Next, a trial hitting method by the system 10 of the present embodiment will be described.
In the system 10 of the present embodiment, when the golf player G makes a trial hit, the behavior parameter of the golf ball b and the behavior parameter of the golf club head 28 are measured and stored in the storage unit 34 for each ball as described above. The
Next, the control unit 40 outputs the behavior parameters of the golf ball b and the golf club head 28 from the storage unit 34 to the data processing unit 36.
In the data processing unit 36, the specific behavior parameter of the golf ball b is associated with at least one of the behavior parameters of the golf club head 28 using, for example, a correlation coefficient.

In the present embodiment, when obtaining the correlation coefficient, the behavior parameter of the golf ball measured every time the golfer G hits the golf ball b and the behavior parameter of the golf club head 28 are used.
Then, as shown in FIG. 8, each behavior parameter of the golf ball and each behavior of the golf club head 28 are obtained by using the obtained behavior parameters of the golf ball and the total result 122 of the behavior parameters of the golf club head 28. Find the correlation coefficient with the parameter. As a method for calculating the correlation coefficient, for example, a CORREL function or a Pearson product-moment correlation coefficient is used.
In the data processing unit 36, for example, the top three behavior parameters having a large correlation coefficient value are extracted from the behavior parameters of the golf club head 28 for each behavior parameter of the golf ball b.
When the behavior parameters of the extracted top three golf club heads 28 are displayed on the monitor 20 as will be described later, the behavior parameters of other golf club heads are displayed differently, for example, Change the color to display.

Further, the data processing unit 36 causes the monitor 20 to display the behavior parameters obtained by measuring the behavior of the golf ball b as shown on the screen 130 shown in FIG.
The screen 130 shows a state in which the same golfer G hits five golf balls b, for example, and the ball trajectory 134 is displayed on the figure 136 imitating a golf course in the first region 132. Is done.
Furthermore, a golf ball behavior parameter column 138a is provided for each hit ball, and the measurement result of the golf ball behavior parameter is displayed in the form of Table 138.

Further, the data processing unit 36 displays behavior parameters obtained by measuring the behavior of the golf club head 28 on the monitor 20 as shown in a screen 140 in FIG.
On the screen 140, the hit point position of the golf ball is displayed on the golf club head graphic 142, and the hit point position of the golf ball b on the golf club head is displayed on the window 146.
Further, the approach state of the golf club head 28 in the vertical direction is displayed on a graph 144a, and the approach state of the golf club head 28 in the left and right direction is displayed on a graph 144b.
Also, a behavior parameter field 148a of the golf club head 28 is provided for each hit ball, the head speed (face speed) at the hitting point position, the approach angle in the vertical direction and the horizontal direction of the golf club head 28, the dynamic loft, the face The measurement results of the corner, the lie angle, the hit point position in the vertical direction of the face surface, and the hit point position in the horizontal direction are displayed in the form of Table 148.

  In the present embodiment, when the region 139 that displays the numerical value of the item in the column of the left and right launch angles in the table 138 shown in FIG. 9 among the behavior parameters of the hit golf ball b is clicked, for example, the screen 140 in FIG. At this time, in Table 148, the relationship with the left and right launch angles is high, that is, the value of the correlation coefficient is large, for example, the entry 149a of the entry angle (left and right), face angle, and hit point (left and right), 149b and 149c are displayed with different colors. Thereby, the golfer G who has made a trial hit or the operator of the system 10 can easily determine which element of the behavior of the golf club head is related to the left and right launch angles in the hitting result. .

In the present embodiment, items other than the left and right launch angles among the behavior parameters of the hit golf ball b, such as items in the behavior parameter column shown in Table 138 shown in FIG. When the area for displaying the numerical value of the item is clicked, the clicked item and the behavior parameter of the golf club head 28 having a large correlation coefficient value are changed and displayed separately.
In the present embodiment, three items having a large correlation coefficient value have been described as being displayed with different colors, but the present invention is not limited to this. In the setting unit 38, the number of colors to be displayed can be set by changing the color.

In the present embodiment, the correlation coefficient is used for the association as an example, but the present invention is not limited to this. For example, assuming that a particular one of the behavior parameters of the golf ball is related to at least two of the behavior parameters of the golf club head 28, the contribution rate is calculated using regression analysis (multiple regression). Also good.
In this case, the data processing unit 36 performs a regression analysis on the specific behavior parameters of the golf ball b using the behavior parameters of at least two golf club heads 28 among the behavior parameters of the golf club head 28. .

  When regression analysis is used for the above-described association, the setting of a specific behavior parameter of the golf ball b and the setting of the behavior parameter of the golf club head 28 with respect to the set behavior parameter of the golf ball b are performed by a setting unit 38. Made in The setting of behavior parameters in the setting unit 38 is performed via the operation unit 22.

  In the present embodiment, when regression analysis is used for association, for example, when a left and right launch angle is set as the specific behavior parameter of the golf ball b, the behavior parameter of the golf club head 28 is, for example, the golf club head 28. At least two of the angle of entry, the angle of the face surface of the golf club head 28 (face angle, loft angle, etc.), and the hit point position on the face surface of the golf club head 28 are set.

In the present embodiment, for example, among the golf ball behavior parameters, the left and right launch angles are related to the golf club head behavior parameters of the approach angle (left and right), the face angle, and the hit point position (left and right). To do. Then, in the data processing unit 36, for example, using regression analysis, the contribution ratios of the three parameters, the approach angle (left and right), the face angle, and the hit point position (left and right) with respect to the left and right launch angles are obtained. As a result, the contribution rates were, for example, 9% for the approach angle (left and right), 41% for the face angle, and 50% for the hit point position (left and right).
In the present invention, the regression analysis is not particularly limited, and a known regression analysis can be used.

  Further, in this embodiment, when the data processing unit 36 clicks the area 139 displaying the numerical value of the item in the left and right launch angle column of the table 138 shown in FIG. 9, for example, the approach angle (left and right), face The contribution ratios of corners and hit points (left and right) are displayed on the monitor 20. Thereby, the golfer G can know the contribution ratio of the approach angle (left and right), the face angle, and the hit point (left and right) given to the left and right launch angles as a result of the test hit.

  When regression analysis is used for the association, statistical data is prepared for the combination of the behavior parameter of the golf ball and the behavior parameter of the golf club head, and a highly relevant one can be selected. In this case, the top two parameters having high relevance are extracted by the data processing unit 36 and then subjected to regression analysis.

Further, in the case of using regression analysis, the combination of the behavior parameter of the golf ball b and the behavior parameter of the golf club head 28 that affects the behavior parameter of the golf ball is, for example, the vertical launch angle of the golf ball. Are the entry angle (up and down), loft angle, and hit point position (up and down).
For example, with respect to the left and right launch angles of the golf ball, the approach angle (left and right), the face angle, and the hit point position (left and right) are set.
Further, for example, with respect to the backspin amount of the golf ball, the approach angle (up and down), the loft angle, and the hitting point position (up and down) are set.
Further, for example, for the side spin amount of the golf ball, the approach angle (left and right), the face angle, and the hit point position (left and right) are set.

  The parameters of the approach angle (up and down), the approach angle (left and right), the loft angle, the face angle, the hitting point (up and down) and the hitting point (left and right) that affect the behavior parameters of the golf ball set in this way are as follows: The contribution rate (contribution) is calculated using regression analysis to determine how much the vertical launch angle, left and right launch angle, backspin amount, and side spin amount contribute, and the calculation results are shown in FIG. As shown in FIG. 5, the screen 150 may be displayed on the screen.

In addition, since the contribution rate shown in FIG. 11 is a value obtained by rounding off after the decimal point, the total may exceed 100%.
Further, “entrance angle” shown in FIG. 11 indicates either an approach angle (up and down) or an approach angle (left or right), and “face surface angle” indicates either a loft angle or a face angle. The “spot position” indicates either a spot position (up and down) or a spot position (left and right). According to the behavior parameter of the golf ball b, the golf club set as described above indicates which of the above parameters the “entrance angle”, “face surface angle”, and “hit position” shown in FIG. It is determined by the behavior parameter of the head.
For example, in the vertical launch angle of a golf ball, the “entrance angle” is an approach angle (up and down), the “face surface angle” is a loft angle, and the “spot position” is a hit position (up and down).

  In the present embodiment, based on the table 150 (see FIG. 11) displayed on the monitor 20, as a result of the golfer G or the operator making a trial hit, the behavior of the golf club head depends on the vertical launch angle of the golf ball, the golf ball It is possible to know the degree of influence on the left and right launch angles, the back spin amount of the golf ball, and the side spin amount of the golf ball.

As described above, in the system 10 of the present embodiment and the test hitting method using the system 10, when a golf ball is hit, the specific behavior occurs with respect to the specific behavior of the golf ball after hitting. The golf club heads that are highly related to the behavior are automatically extracted and displayed separately on the monitor 20. Thereby, the golfer G or the operator who made a trial hit can easily determine which element of the behavior of the golf club head is related to, for example, the left and right launch angle in the hitting result. Moreover, the behavior parameters of the golf club head 28 that are highly relevant are always displayed separately on the monitor 20. For this reason, the behavior parameter of the golf club head 28 causing the specific behavior of the golf ball b can be determined regardless of the skill of the golfer G or the operator.
In addition, because the specific behavior of the golf club head is related to the specific behavior of the golf ball, even if the number of parameters to be measured increases, the golfer or operator can It is possible to easily determine which element is related to the behavior of the golf club head, and it does not depend on the understanding (skill) of the measurement parameter of the golfer or the operator.

  The golf club trial hitting system and the golf club trial hitting method of the present invention have been described in detail above. However, the present invention is not limited to the above embodiment, and various improvements and modifications can be made without departing from the spirit of the present invention. Of course, you may also do.

It is a mimetic diagram showing a golf club trial hitting system concerning an embodiment of the present invention. 1 is a schematic block diagram showing a golf club trial hitting system according to an embodiment of the present invention. 1 is a schematic block diagram showing a golf club behavior measuring device of a golf club trial hitting system according to an embodiment of the present invention. (A) is a schematic diagram which shows an example of the arrangement position of the marker provided in a wood type golf club head, (b) is the schematic which shows an example of the arrangement position of the marker provided in an iron type golf club head. It is a figure and (c) is a schematic diagram which shows the example of a marker. (A) is a typical perspective view which shows an example of the time history of the movement of the marker obtained in the measuring device of the present invention, and (b) shows the time history of the movement of the marker shown in FIG. It is a schematic diagram which shows the behavior of the golf club head based. It is a mimetic diagram showing a golf ball behavior measuring device of a trial hitting system of a golf club concerning an embodiment of the present invention. It is a mimetic diagram showing an example of an image obtained with a golf ball behavior measuring device of a trial hitting system of a golf club concerning an embodiment of the present invention. It is a mimetic diagram for explaining a correlation coefficient used for a golf club trial hitting system of an embodiment of the present invention. It is a mimetic diagram showing a measurement result of a behavior of a golf ball obtained in a golf club trial hitting system of an embodiment of the present invention. It is a mimetic diagram showing the measurement result of the behavior of the golf club head obtained in the golf club trial hitting system of the embodiment of the present invention. It is a schematic diagram showing the contribution ratio of the behavior parameter of the golf club head to the behavior parameter of the golf ball obtained in the golf club trial hitting system of the embodiment of the present invention.

Explanation of symbols

10 Trial strike system (system)
12 golf club head behavior measuring device (behavior measuring device)
14 Golf ball behavior measuring device (measuring device)
DESCRIPTION OF SYMBOLS 16 Processing apparatus 18 Processing part 20 Monitor 22 Operation part 30 1st processing unit 32 2nd processing unit 34 Storage part 36 Data processing part 38 Setting part 40 Control part 70a-70c Marker 71a-71c Marker feature point

Claims (6)

A golf club head behavior measuring unit that measures at least two behavior parameters indicating a behavior immediately before hitting the golf club head when the golfer hits one ball with the golf club;
When the golfer hits a golf ball with the golf club, the golf club head behavior measurement unit measures at least one behavior parameter indicating the behavior of the golf ball after hitting the hit golf ball. A golf ball behavior measuring unit;
Of the behavior parameters of the golf ball, association is made between at least two of the behavior parameters of the golf ball and the behavior parameters of the golf club head, and based on the association, the association with the particular behavior parameter of the golf ball A golf club trial hitting system, comprising: a processing unit that displays a behavior parameter of the golf club head having a high value on a display unit by changing the display of the behavior parameter to another behavior parameter. 2. The golf club trial hitting system according to claim 1, wherein a correlation coefficient is used for associating the specific behavior parameter with the at least two behavior parameters of the golf club head by the processing unit. For the association between the specific behavior parameter and the at least two behavior parameters of the golf club head by the processing unit, regression analysis using at least two behavior parameters of the golf club head with respect to the specific behavior parameter is used. The golf club trial hitting system according to claim 1. When a golfer hits a golf ball with a golf club, the golf ball measures at least two behavior parameters indicating the behavior of the golf club head immediately before hitting, and the behavior of the golf ball after hitting the hit golf ball Measuring at least one behavioral parameter indicative of
Correlating specific behavior parameters of the golf ball behavior parameters with at least two of the golf club head behavior parameters;
And a step of displaying the behavior parameter of the golf club head highly related to the specific behavior parameter of the golf ball based on the association with another behavior parameter. How to hit. 5. The golf club trial hitting method according to claim 4, wherein a correlation coefficient is used for associating the specific behavior parameter with at least two behavior parameters of the golf club head. Wherein the association of a particular behavior parameters and at least two behavior parameters of the golf club head, the claims regression analysis is used to use at least two behavior parameters of the golf club head with respect to said specific behavior parameters 5. A golf club trial hitting method according to 4.

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