WO2017006875A1 - Procédé d'affichage de swing de club de golf et diagramme d'affichage - Google Patents

Procédé d'affichage de swing de club de golf et diagramme d'affichage Download PDF

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Publication number
WO2017006875A1
WO2017006875A1 PCT/JP2016/069692 JP2016069692W WO2017006875A1 WO 2017006875 A1 WO2017006875 A1 WO 2017006875A1 JP 2016069692 W JP2016069692 W JP 2016069692W WO 2017006875 A1 WO2017006875 A1 WO 2017006875A1
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WIPO (PCT)
Prior art keywords
golf club
angle
area
axis
golf
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/069692
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English (en)
Japanese (ja)
Inventor
三枝　宏
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PRGR Co Ltd
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PRGR Co Ltd
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Publication date
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Priority to KR1020187000843A priority Critical patent/KR102018507B1/ko
Publication of WO2017006875A1 publication Critical patent/WO2017006875A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
    • A63B71/0622—Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/36—Training appliances or apparatus for special sports for golf
    • A63B69/3623—Training appliances or apparatus for special sports for golf for driving
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B24/00—Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
    • A63B24/0003—Analysing the course of a movement or motion sequences during an exercise or trainings sequence, e.g. swing for golf or tennis
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B57/00—Golfing accessories
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/46—Measurement devices associated with golf clubs, bats, rackets or the like for measuring physical parameters relating to sporting activity, e.g. baseball bats with impact indicators or bracelets for measuring the golf swing
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/36—Training appliances or apparatus for special sports for golf
    • A63B69/3614—Training appliances or apparatus for special sports for golf using electro-magnetic, magnetic or ultrasonic radiation emitted, reflected or interrupted by the golf club
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/32—Golf
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/80—Special sensors, transducers or devices therefor
    • A63B2220/805—Optical or opto-electronic sensors
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/80—Special sensors, transducers or devices therefor
    • A63B2220/83—Special sensors, transducers or devices therefor characterised by the position of the sensor
    • A63B2220/833—Sensors arranged on the exercise apparatus or sports implement

Definitions

  • the present invention relates to a golf club swing display method and display chart.
  • a method of measuring and analyzing a golf swing a method of capturing a golf swing with a camera, analyzing a behavior of the golf club head from the captured image, and extracting a feature of the golf swing, or a golf club head with a magnetic sensor
  • a method for directly measuring the behavior of a golf club or a method for measuring the behavior of a golf club head using an interrupter type optical sensor that senses that a plurality of light beams arranged at predetermined positions pass across the golf club head.
  • An interrupter type optical sensor that senses that a plurality of light beams arranged at predetermined positions pass across the golf club head.
  • Patent Documents 1 and 2 below describe devices that can measure the behavior of a golf club when a golf ball is hit.
  • Patent Document 1 by arranging four sensors, it is possible to roughly know the incident angle of the golf club head with respect to the golf ball.
  • Patent Document 2 it is possible to roughly know the incident angle of the golf club head with respect to the golf ball by arranging four sensors.
  • the golf club head can roughly know the incident angle of the golf club head with respect to the golf ball, the golf that affects the spherical muscles such as the hook and slice of the golf ball. It was difficult to easily understand the characteristics of the club swing.
  • the present applicant has proposed a swing display method for a golf club that makes it easy and easy to understand the characteristics of the swing that affects the ball muscle (see Patent Document 3).
  • a reference line obtained by projecting a target line connecting the center of the golf ball and the target onto a plane parallel to the horizontal plane and a tangent line to the movement locus of the golf club head immediately before hitting the golf ball are projected onto the plane.
  • the angle formed by the straight line is the left / right approach angle.
  • the angle formed between the reference line and the second straight line projected on the plane from the normal line passing through the center point of the face surface of the golf club head immediately before hitting the golf ball is defined as the face angle at the time of hitting.
  • An X axis indicating the left and right approach angle and a Y axis perpendicular to the X axis and indicating the face angle at the time of hitting are formed, and the intersection of the X axis and the Y axis is formed as the zero degree of the left and right approach angle and the hitting face angle
  • the two-dimensional coordinates and a plurality of areas divided according to the tendency of the spherical muscles are displayed on the two-dimensional coordinates.
  • the plurality of areas are, for example, a slice area, a fade area, a hook area, a draw area, and a straight area.
  • coordinate points indicating the value of the left and right approach angle measured when the golfer hits the golf ball using the golf club and the value of the face angle at the time of hitting are displayed as measurement points.
  • JP 2001-314540 A Japanese Patent No. 3073828 JP 2011-110164 A
  • the ball of the golf ball has a better evaluation as the distance (shift amount) from the reference line to the landing point is shorter.
  • the ball muscle is evaluated in consideration of the left and right approach angle when the golf ball is hit and the face angle at the time of hitting, the actual trajectory of the golf ball, in other words, the shift amount is affected.
  • the left and right launch angles of the hit golf ball and the side spin amount of the hit golf ball are not sufficiently considered. For this reason, the conventional technology has room for improvement in evaluating the distance (shift amount) from the reference line to the landing point more accurately.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to display a swing of a golf club that is advantageous in accurately providing a swing feature that affects the position of a landing point of a golf ball.
  • the object is to provide a method and display chart.
  • the present invention displays on a display device swing characteristics measured based on the behavior of a golf club head immediately before the golf club head of a golf club swung by a golfer hits a golf ball.
  • a method for displaying a swing of a golf club comprising: a reference line obtained by projecting a target line connecting the center of the golf ball and a target onto a plane parallel to a horizontal plane; and the golf club head immediately before hitting the golf ball.
  • the angle formed by the first straight line projected on the plane with the tangent to the movement trajectory is the left and right approach angle, and the sign of the left and right approach angle is the positive angle on the opposite side of the golfer with the reference line as the center.
  • the golf club head fades immediately before hitting the golf ball with the reference line.
  • the angle formed by the normal line passing through the center point of the surface and the second straight line projected on the plane is the face angle at the time of hitting, and the positive / negative of the face angle at the time of hitting is positive on the opposite side of the golfer around the reference line.
  • the golf ball of the golf club swung by the golfer has a left and right launch angle
  • the positive and negative of the left and right launch angle is a positive angle on the opposite side of the golfer around the reference line and a negative angle on the golfer side.
  • the amount of spin around the vertical line passing through the center of the golf ball immediately after being hit by the club head is taken as the amount of side spin.
  • the positive or negative side spin amount is positive in the clockwise direction in plan view, negative in the counterclockwise direction, and the left and right launch angles and the side spin amount are estimated from the measured values of the left and right approach angles and the hitting face angle.
  • the movement trajectory of the golf ball is simulated and the reference line
  • the simulation step for calculating the shift amount that is the distance from the landing point to the landing point, the estimation step, and the simulation step data including the left and right approach angles, the striking face angle, and the shift amount is accumulated.
  • the X axis indicating the left and right approach angles
  • the left and right approach angles and the striking face angle on a two-dimensional coordinate with the Y axis indicating the striking face angle and the intersection of the X axis and Y axis as the left and right approach angles and the zero angle of the striking face angle.
  • a classification map creating step for creating a classification map that defines a plurality of areas demarcated according to the tendency of the spherical muscle specified based on the shift amount and the two-dimensional coordinate axes on the display screen of the display device
  • a coordinate axis display step for displaying the image, various area display steps for displaying a plurality of areas on the display screen based on the classification map, and when the golfer hits a golf ball using a golf club on the display screen.
  • a measurement point display step of displaying, as measurement points, coordinate points indicating the measured value of the left and right approach angle and the value of the face angle at the time of hitting.
  • the present invention is a golf club swing display chart displaying swing characteristics measured based on the behavior of the golf club head immediately before the golf club head of the golf club swung by the golfer hits the golf ball. Then, a reference line obtained by projecting a target line connecting the center of the golf ball and the target onto a plane parallel to a horizontal plane and a tangent to the movement track of the golf club head immediately before hitting the golf ball are projected onto the plane.
  • the angle formed by the first straight line is a left and right approach angle
  • the positive and negative of the left and right approach angle is a positive angle on the opposite side of the golfer around the reference line, a negative angle on the golfer side, and the reference line
  • a normal line passing through the center point of the face surface of the golf club head immediately before hitting the golf ball is the plane.
  • the angle formed by the projected second straight line is the face angle at the time of hitting, and the positive / negative of the face angle at the time of hitting is the positive angle on the opposite side of the golfer around the reference line, and the negative angle on the golfer side
  • Two-dimensional coordinates formed as zero degrees, and a plurality of areas divided on the two-dimensional coordinates according to the tendency of spherical muscles, and intersect the X axis and the Y axis in the two-dimensional coordinate axes.
  • a first boundary line consisting of a straight line corresponding to zero and the shift amount extending with a positive slope, and a positive line that intersects the first boundary line on the two-dimensional coordinate axis and is larger than the first boundary line.
  • the amount of side spin extending with a slope of And a plurality of areas divided according to the tendency of the spherical muscles are sandwiched between the first boundary line and the second boundary line.
  • the golf club swing display method and display chart of the present invention based on the left and right approach angles and the hitting face angle of the golf club head immediately before hitting the golf ball, and the left and right approaching angles and the hitting face Since the type of golf swing is classified in consideration of the shift amount estimated from the angle, it is advantageous to more accurately classify the type of golf swing that affects the position of the landing point of the golf ball.
  • FIG. 1 is a block diagram showing a configuration of a golf club setting device 10 of the present embodiment.
  • (A) is a perspective view of an iron-based golf club head 16A to be measured by the golf club selection device 10
  • (b) is a perspective view of a wood-based golf club head 16B
  • (c) is a marker 20a, 20b. 20c and marker feature points 21a, 21b, 21c.
  • 2 is a perspective view of an irradiation photographing unit 11.
  • FIG. 3 is a plan view of an irradiation photographing unit 11.
  • FIG. 2 is a block diagram showing a configuration of a computer 14.
  • FIG. 2 is a functional block diagram of a computer 14.
  • FIG. (A) is a schematic diagram showing the time history of marker movement determined from the three-dimensional position coordinates of the marker feature points, and (b) shows the behavior of the golf club head based on the time history of marker movement shown in (a).
  • It is a schematic diagram. 1 is a plan view showing a state in which a golf club head 16 just before hitting a golf ball 2 is viewed in plan. It is a plane schematic diagram explaining the right-and-left approach angle (theta). It is a schematic diagram explaining the face angle ⁇ at the time of impact.
  • FIG. 5 is a schematic diagram when a horizontal approach angle X is taken on the horizontal axis (X axis), a face angle ⁇ at impact is taken on the vertical axis (Y axis), and left and right launch angle data is arranged at each coordinate point.
  • FIG. 5 is a schematic diagram when a horizontal approach angle X is taken on the horizontal axis (X axis), a face angle ⁇ at impact is taken on the vertical axis (Y axis), and side spin amount data is arranged at each coordinate point.
  • It is a schematic diagram explaining the structure of a classification map. It is a schematic diagram explaining each area and a boundary line. It is the 1st explanatory view of a classification map in case a golf club is a driver.
  • FIG. 4 is a schematic diagram for explaining a center of gravity distance L and a center of gravity angle ⁇ of a golf club head 16.
  • (A), (b) is a schematic diagram explaining how to obtain
  • (A), (b) is an explanatory diagram for explaining a centroid distance F GL and face Progressive Deployment F P on the face.
  • (A) is a perspective view of an iron-based golf club 4,
  • (b) is a cross-sectional view of the golf club 4 taken along the line XX 'shown in (a), and (c) is a grip before mounting.
  • 7 is a cross-sectional view of FIG.
  • (A) is a front view explaining the state which installed the golf club 4 in the normal address position,
  • (b) is a top view.
  • FIG. 6 is a diagram in which a change in face angle ⁇ at the time of hitting when the lie angle of a golf club is changed is measured.
  • 5 is a flowchart for explaining a classification map creation operation of the golf club selection apparatus 10.
  • 5 is a flowchart for explaining a swing feature display operation and a display chart creation operation by the golf club selection device 10.
  • 4 is a flowchart for explaining a selecting operation of the golf club selecting apparatus 10.
  • the left and right launch angle and the side spin amount are determined by the left and right approach angle ⁇ and the hitting face angle ⁇ of the golf club head described later. Strictly speaking, the left and right launch angles and the side spin amount are affected by the position of the hit point on the face surface, but in the present embodiment, the hit point is treated as being the center of the face surface.
  • the present invention is focused on the fact that the left and right launch angles are correlated with the left and right approach angles and the hitting face angle, and the side spin amount is correlated with the left and right approaching angles and the hitting face angle.
  • the present invention simulates the movement trajectory of the golf ball using the left and right launch angles and the side spin amount estimated from the correlation based on the measured values of the left and right approach angles and the hitting face angle. Shift amount is obtained, and the quality of the ball muscle is classified and evaluated in consideration of this shift amount.
  • the golf club selection device 10 includes an irradiation photographing unit 11, a control unit 12, and a computer 14.
  • the irradiation photographing unit 11 photographs the golf club head by stereo photographing from two different directions.
  • the irradiation imaging unit 11 constitutes an imaging unit.
  • the control unit 12 controls the irradiation photographing unit 11 and supplies image data generated by the irradiation photographing unit 11 to the computer 14.
  • the computer 14 captures data of an image photographed by the irradiation photographing unit 11 and performs signal processing, image processing, and operation analysis, classifies golf swings into types, and selects an optimal golf club.
  • reference numeral P indicates a golfer
  • reference numeral 4 indicates a golf club.
  • FIG. 3A shows an iron-based golf club head 16A to be measured by the golf club selection apparatus 10, and FIG. 3B shows a wood-based golf club head 16B.
  • the iron-based and wood-based golf club heads are expressed without distinction, they are expressed as a golf club 16.
  • markers 20a, 20b, and 20c are provided on the upper end surface of the golf club head 16 that contacts the face surface (striking surface) 1602 and the hosel portion. Yes.
  • the markers 20a, 20b, and 20c are not distinguished, they are referred to as the marker 20.
  • markers 20a, 20b, and 20c are provided at three locations on the top surface that forms a crown portion that contacts the face surface 1602 of the wood-based golf club head 16B.
  • the markers 20a, 20b, and 20c have a retroreflective function that reflects the irradiation light of the irradiation light source 22 that will be described later so that the images of the markers 20a, 20b, and 20c can be always identified when the image is taken by the camera 26 that will be described later. It has a configuration.
  • the markers 20a, 20b, and 20c are obtained by cutting a known retroreflective sheet into a predetermined shape, for example.
  • the markers 20 are provided at three or more locations on the golf club head, and the arrangement positions are set so that these markers 20 form triangular vertices and do not rest on one straight line.
  • one marker 20 is provided in the hosel part so that the three retroreflective markers do not rest on one straight line.
  • a marker feature point is a point that characterizes a marker.
  • the marker is provided on the surface of the golf club head 16 and has three or more marker feature points.
  • the center points of the circular shapes are set as marker feature points 21a to 21c, and the positions of the marker points 21a to 21c are described later. Extracted.
  • a regular polygon such as a regular triangle or a square may be used. it can.
  • 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.
  • the shape of each marker does not need to be the same, The thing of the above-mentioned shape can also be combined freely.
  • each marker feature point of each marker is, for example, the center point (center of gravity) of the marker.
  • each of the three vertexes (intersections of the three sides) of the marker may be used as the marker feature point.
  • the shape of the marker is not particularly limited as long as it has one or a plurality of marker feature points that characterize the marker and that can be uniquely extracted.
  • FIG. 4 is a perspective view of the irradiation photographing unit 11, and FIG. 5 is a plan view of the irradiation photographing unit 11.
  • the irradiation photographing unit 11 includes an irradiation light source 22, a half mirror 24, a camera 26, a reflection mirror 28, and a base 30.
  • the mirror 24, the camera 26, and the reflection mirror 28 are provided on the base 30.
  • the irradiation light source 22 irradiates the golf club head 16 as a measurement target.
  • the irradiation light source 22 is composed of a halogen light source or an LED light source, and irradiates continuous light that is continuous in time.
  • the irradiation light source 22 is disposed so as to irradiate the marker 20 of the golf club head 16 through the half mirror 24.
  • the half mirror 24 is a mirror having substantially the same light transmittance and reflectance, and transmits half of the light incident on the reflection surface (boundary surface) of the half mirror 24 and reflects the remaining half of the light.
  • the half mirror 24 is provided such that, when viewed in plan, the optical path of the light emitted from the irradiation light source 22 forms an incident angle of approximately 45 degrees with respect to the reflection surface.
  • the camera 26 includes a photographic lens, an imaging element that captures a subject image guided by the photographic lens, a signal processing unit that generates an image signal based on an imaging signal generated by the imaging element, and the like. Yes.
  • the camera 26 passes through a position where the optical axis of the photographing lens intersects the optical path of the irradiation light source 22 and the reflecting surface of the half mirror 24, and the optical axis of the photographing lens is the irradiation light source 22. Is formed so as to form an angle of approximately 90 degrees with the optical path of the light.
  • the reflection mirror 28 has a total reflection surface that totally reflects light, and has a function of adjusting the reflection direction (angle) and position of the total reflection surface.
  • the reflection mirror 28 reflects the light irradiated from the irradiation light source 22 and reflected by the half mirror 24 on the total reflection surface to irradiate the markers 20a, 20b, and 20c of the golf club head 16, and the markers 20a, 20b, and 20c.
  • the reflection direction and position of the total reflection surface are adjusted so that the reflected light from the light is reflected again by the total reflection surface and guided to the camera 26 through the half mirror 24.
  • the irradiation light source 22 emits continuous light toward the reflection surface of the half mirror 24.
  • Half of the light applied to the reflecting surface of the half mirror 24 is applied to the markers 20a, 20b, and 20c provided on the golf club head to be measured as transmitted light that passes through the position Shm on the reflecting surface. It becomes.
  • Reflected light (hereinafter referred to as marker reflected light 1a) from the markers 20a, 20b, and 20c travels toward the reflective surface of the half mirror 24.
  • the marker reflected light 1a travels in the opposite direction to the irradiated light from the irradiation light source 22, and the marker reflected light 1a is reflected light whose optical path matches the irradiation light from the irradiation light source 22. Therefore, the emission angle formed by the light that passes through the reflection surface of the half mirror 24 and is irradiated to the markers 20a, 20b, and 20c with the reflection surface of the half mirror 24, and the marker reflected light 1a is incident on the reflection surface of the half mirror 24. The incident angle is substantially the same.
  • the marker reflected light 1a is reflected by the reflecting surface of the half mirror 24 and guided to the photographing lens of the camera 26.
  • the remaining half of the light irradiated on the reflection surface of the half mirror 24 is reflected by the reflection surface of the half mirror 24 and enters the total reflection surface of the reflection mirror 28.
  • the totally reflected light is irradiated as irradiation light to the markers 20a, 20b, and 20c provided on the golf club head 16 that is a measurement target.
  • the reflected light from the markers 20a, 20b, and 20c (hereinafter referred to as the marker reflected light 1b) of the irradiated light overlaps with the optical path of the irradiated light that is totally reflected from the reflection mirror 28 and applied to the markers 20a, 20b, and 20c.
  • the marker reflected light 1 b is reflected toward the half mirror 24 on the total reflection surface of the reflection mirror 28.
  • the reflection angle (irradiation angle) at which the light reflected by the reflecting surface of the half mirror 24 and traveling toward the reflecting mirror 28 forms the reflecting surface of the half mirror 24, and the incident light where the marker reflected light 1b enters the reflecting surface of the half mirror 24.
  • the angles are substantially the same.
  • the marker reflected light 1 b transmitted through the half mirror 24 enters the photographing lens of the camera 26 together with the marker reflected light 1 a reflected by the half mirror 24.
  • images of the markers 20a, 20b, and 20c by the two reflected lights from the markers 20a, 20b, and 20c that are substantially coincident with the optical paths of the irradiation light irradiated from two different directions are taken by the camera 26.
  • light is irradiated toward the golf club head 16 from two different directions, and an image of the golf club head 16 is taken from two different directions.
  • the golf club head 16 may be photographed from two or more directions. For example, using a known motion capture system, images of the golf club head 16 are photographed from three different directions by three or more cameras. You can also
  • the position and orientation of the reflection mirror 28 are finely adjusted in advance so that the image of the marker reflected light 1b photographed by the camera 26 and the image of the marker reflected light 1a do not overlap. More specifically, a single image taken by the camera 26 is divided into two in the vertical direction and set as two areas, an upper area and a lower area. Then, the position and orientation of the reflecting mirror 28 are finely adjusted in advance so that the image by the marker reflected light 1a is taken in the upper area of the image and the image by the marker reflected light 1b is taken in the lower area of the image. Keep it.
  • the golf club head 16 is obtained by photographing the images of the markers 20a, 20b, and 20c by the marker reflected light 1a and the images of the markers 20a, 20b, and 20c by the marker reflected light 1b with one camera 26.
  • the images of the markers 20a, 20b, and 20c are taken as stereo images.
  • the camera 26 takes images of the markers 20a, 20b, and 20c by multiple exposure, for example, at intervals of 1/2000 seconds. Thereby, the stereo image of many marker 20a, 20b, 20c is produced
  • a half prism, various beam splitters, or the like can be used as long as it is an optical member that reflects and transmits light incident in both directions on the reflecting surface instead of the half mirror 24.
  • the ratio of the reflectance on the reflecting surface is not particularly limited, but is preferably approximately 1: 1.
  • FIG. 6 is a diagram showing an example in which the reflection mirrors 28a and 28b are arranged in addition to the reflection mirror 28 in the optical path formed by the irradiation photographing unit 11 so that the optical path lengths of the marker reflected lights 1a and 1b are aligned.
  • the reflecting mirrors 28a and 28b in the optical path of the marker reflected light 1a, the optical path from the marker reflected light 1a to the half mirror 24 from the markers 20a, 20b and 20c is lengthened, and the length of the optical path of the marker reflected light 1b is increased.
  • Can be aligned That is, by providing the configuration shown in FIG. 6, the optical path length of the marker reflected light 1a is longer than that shown in FIG.
  • the optical path lengths of the marker reflected lights 1a and 1b to the camera 26 can be made substantially uniform.
  • the camera 26 can take an image of each marker by the marker reflected light 1a, 1b in focus.
  • the respective emission angles are the two reflected lights reflected from the markers 20a, 20b, and 20c (marker reflected light 1a, 1b) substantially coincides with the incident angle of the corresponding reflected light when entering the reflecting surface of the half mirror 24. Therefore, the two reflected light images of the markers 20a, 20b, and 20c provided on the golf club head 16 can be taken with high contrast.
  • the control unit 12 includes a detector 1202 and a buffer memory 1204.
  • the detector 1202 detects whether or not the golf club 16 has passed at a position on the near side of the shooting range of the camera 26 in the movement locus of the golf club 16.
  • various conventionally known detectors such as a light reflection type detector that detects the presence or absence of an object by detecting reflected light reflected by the object can be used.
  • the buffer memory 1204 is a storage device that temporarily stores the image data supplied from the camera 26.
  • the control unit 12 When the detector 1202 detects the passage of the golf club 16, the control unit 12 gives a control command to start the shooting operation to the camera 26 and ends the shooting operation when the golf club 16 is out of the shooting range of the camera 26. A control command is given to the camera 26.
  • the control unit 12 temporarily stores the image data supplied from the camera 26 in the buffer memory 1204, and then supplies the image data to the computer 14.
  • the computer 14 has a function of measuring the behavior of the golf club head 16 based on the image data supplied from the control unit 12, classifying the swing of the golf club, and selecting the golf club. Further, the computer 14 displays the swing characteristics of the golf club and creates a display chart showing the characteristics.
  • FIG. 7 is a block diagram showing the configuration of the computer 14.
  • the computer 14 includes a CPU 32, a ROM 34, a RAM 36, a hard disk device 38, a disk device 40, a keyboard 42, a mouse 44, a display 46, a printer 48, an input / output interface 50, and the like connected via an interface circuit (not shown) and a bus line. have.
  • the ROM 34 stores a control program and the like, and the RAM 36 provides a working area.
  • the hard disk device 38 stores a dedicated program for measuring the behavior of the golf club head 16, classifying the swing, selecting a golf club, and the like.
  • the disk device 40 records and / or reproduces data on a recording medium such as a CD or a DVD.
  • the keyboard 42 and the mouse 44 receive an operation input by the operator.
  • the display 46 displays and outputs data, and the printer 48 prints and outputs data.
  • the display 46 and the printer 48 output data.
  • the display 46 constitutes the display device of the claims.
  • the input / output interface 50 exchanges data with an external device.
  • FIG. 8 is a functional block diagram of the computer 14.
  • the computer 14 includes a signal processing unit 52, an image processing unit 54, an analysis unit 56, an estimation unit 90, a simulation unit 92, a classification map creation unit 94, a classification unit 58, a selection unit 60, an output unit 62, and a storage.
  • the unit 64 includes an image forming unit 80, an image output unit 82, and the like.
  • the signal processing unit 52, the image processing unit 54, the analysis unit 56, the classification unit 58, the selection unit 60, the output unit 62, the image forming unit 80, and the image output unit 82 are executed by the CPU 32 executing the dedicated program.
  • these portions may be configured by hardware such as a circuit.
  • the storage unit 64 is configured by, for example, the hard disk device 38 or the RAM 36, and includes data (CAD data) D1 of the three-dimensional shape model of the golf club head 16, corresponding point position information D2, a classification map D3, and selection information D4.
  • the information including the golf club information D5 is stored.
  • the information D1 to D5 will be described later.
  • the data values of the portions of the markers 20a, 20b, and 20c can be extracted from the signal processing unit 52 so that the marker feature points 21a, 21b, and 21c can be extracted from the images of the markers 20a, 20b, and 20c in the image.
  • This is a part 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 as to be distinguished from data values of other parts.
  • the image processing unit 54 is a part that specifies the positions of the marker feature points 21a, 21b, and 21c from the image data of the golf club head 16 during the golf swing, and calculates the behavior of the golf club head 16 using the specified positions. is there.
  • the image processing unit 54 specifies the marker feature points 21a, 21b, and 21c of the markers 20a, 20b, and 20c and extracts positions in the three-dimensional coordinate system, and 3 of the extracted marker feature points.
  • a calculation unit 54b that calculates time-series data of the position and orientation of the golf club head 16 using the dimensional coordinate position.
  • the extraction unit 54a identifies image portions of the markers 20a, 20b, and 20c from the image that has been subjected to the gradation processing of a predetermined number of gradations, and extracts the position thereof.
  • the position coordinates of the marker feature points 21a, 21b, and 21c are obtained for the images of the markers 20a, 20b, and 20c taken from different directions at the same time, which are taken by the irradiation imaging unit 11, and the obtained respective coordinates are obtained.
  • the position coordinates of the marker feature points 21a, 21b, and 21c the position coordinates in the three-dimensional coordinate system that defines the space through which the golf club head 16 passes are obtained, and the marker feature points 21a, 21b, and 21c in the three-dimensional coordinate system are obtained. It is configured to extract a position.
  • the position coordinates of the marker feature points 21a, 21b, and 21c are obtained for the images of the markers 20a, 20b, and 20c in images taken from different directions by the camera 26 at the same time.
  • the position coordinates in the three-dimensional coordinate system that define the space through which the golf club head 16 passes using the position coordinates of the respective marker feature points 21a, 21b, 21c thus determined as the position coordinates of the markers 20a, 20b, 20c.
  • the coordinates are obtained, and the positions of the marker feature points 21a, 21b, and 21c in the three-dimensional coordinate system are extracted.
  • the shooting direction of the irradiation imaging unit 11 Since the shooting direction of the irradiation imaging unit 11 is known, the information representing the two-dimensional position coordinates in the images shot by these irradiation imaging units 11 is obtained, thereby representing a space through which the golf club head 16 passes.
  • the position in the three-dimensional coordinate system (three-dimensional position coordinates) can be obtained.
  • each of the images of the markers 20a, 20b, and 20c are taken at a predetermined time interval, for example, a time interval of 1/2000 second, each of the images of the markers 20a, 20b, and 20c every 1/2000 second.
  • the time-series data of the three-dimensional position coordinates of the marker feature points (center points of the markers) 21a, 21b, and 21c can be obtained.
  • the irradiation imaging unit 11 is used to photograph from two directions, and the marker feature points 21a, 21b, and 21c to 3 are obtained for the images of the markers 20a, 20b, and 20c obtained from the respective directions.
  • a dimension position coordinate is obtained.
  • a stereo image is obtained by one camera 26 as shown in FIG. The case where the irradiation imaging
  • various conventionally known configurations such as using two or more cameras can be used. is there.
  • the calculating unit 54b 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 extracting unit 54a.
  • the three-dimensional shape model corresponding to the arrangement position of the three-dimensional shape model data (CAD data) D1 of the golf club head 16 and the marker feature points.
  • Corresponding point position information D2 indicating the position of the upper corresponding point is stored.
  • the three-dimensional shape model data (CAD data) D1 constitutes a three-dimensional shape model reproducing a golf club head
  • the corresponding point position information D2 corresponds to the three-dimensional shape model corresponding to three or more marker feature points. The position of the upper corresponding point is shown.
  • the calculation unit 54b calls the data D1 and the information D2, and the position coordinates of the corresponding points on the three-dimensional shape model in the three-dimensional coordinate system are the three-dimensional position coordinates of the marker feature points extracted by the extraction unit 54a.
  • the position and orientation of the three-dimensional shape model are calculated so as to match, and the time series data of the position and orientation of the golf club head 16 are calculated with the position and orientation as the position and orientation of the golf club head 16. Is done.
  • FIG. 9A is a schematic diagram showing a time history of movement of the marker at a time interval of 1/2000 second determined from the three-dimensional position coordinates of the marker feature point
  • FIG. 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.
  • reference numeral 2 indicates a golf ball
  • an arrow a indicates the moving direction of the golf club head (the launch direction of the golf ball 2).
  • FIG. 9B shows the golf club head as viewed from above.
  • the axis parallel to the launch direction of the golf ball 2 is the X axis
  • the axis perpendicular to the X axis and parallel to the horizontal plane (the ground) is the Y axis
  • the axis is perpendicular to the horizontal plane.
  • An XYZ coordinate system with Z as the Z axis is set in advance.
  • three plot groups M1, M2 to M10 representing the three markers 20a, 20b, and 20c are three marker feature points extracted from markers photographed at a time interval of 1/2000 second. The positions of 21a, 21b, and 21c are shown.
  • the golf club head 16 by associating the golf club head 16 with the three plot groups M1, M2 to M10 representing the markers, and continuously displaying the movement of the golf club head 16 as shown in FIG. 9B.
  • the change in the position of the golf club head 16 and the orientation of the face can be known.
  • the position of the golf club head 16 represents the position coordinates at the center position of the face surface 1602 as the representative position of the golf club head 16.
  • the orientation of the face of the golf club head 16 is represented by a normal passing through the center point of the face surface 1602.
  • the analysis unit 56 uses the time series data of the calculated position and orientation of the golf club head 16, that is, the time series data of the markers 20 a, 20 b, and 20 c, to determine the golf club head 16 immediately before hitting the golf ball 2.
  • the left and right approach angles and the face angle at the time of impact are obtained.
  • FIG. 10 is a plan view showing a state in which the golf club head 16 is viewed in plan just before hitting the golf ball 2
  • FIG. 11 is a schematic diagram for explaining the definition of the left and right approach angle ⁇
  • reference numeral 1610 denotes the center position of the face surface 1602 of the golf club head 16. As shown in FIGS.
  • a straight line obtained by projecting a target line connecting the center of the golf ball 2 and the target onto the plane is defined as a reference line L0.
  • the reference line L0 is parallel to the X axis, and thus the plane is parallel to the X axis and the Y axis and orthogonal to the Z axis.
  • a straight line obtained by projecting a tangent of the movement locus of the golf club head 16 immediately before hitting the golf ball 2 onto a plane parallel to the horizontal plane is defined as a first straight line L1.
  • the left / right approach angle ⁇ is an angle formed by the reference line L0 and the first straight line L1.
  • a straight line obtained by projecting a normal line passing through the center point of the face surface 1602 of the golf club head 16 immediately before hitting the golf ball 2 onto the plane is defined as a second straight line L2.
  • the hit face angle ⁇ is an angle formed by the reference line L0 and the second straight line L2.
  • the analysis unit 56 obtains the angle formed by the reference line L0 and the first straight line L1 as the left and right approach angle ⁇ from the time series data of the position and orientation of the three-dimensional shape model calculated by the calculation unit 56,
  • the angle formed by the reference line L0 and the second straight line L2 is determined as the face angle ⁇ at impact. This will be specifically described.
  • the moving speed of the golf club head 16 decreases. Therefore, in the time-series data of the position coordinates representing the movement of the center position 1610 of the face surface 1602 at a certain time interval, the position coordinates immediately before and after the hit.
  • the moving distance of is abruptly shorter than the moving distance at each previous time point.
  • the analysis unit 56 thus identifies the tangent line of the movement path of the golf club head 16 immediately before hitting the golf ball 2 and the normal line of the face surface 1602, and thus the left and right approach angle ⁇ in the above-described procedure. Further, the face angle ⁇ upon hitting is obtained.
  • the golf club head 16 Since the head speed of the golf club head 16 is normally 30 to 50 m / sec, the golf club head 16 moves 15 mm to 25 mm at a time interval ⁇ of 1/2000 second that is an imaging interval by the camera 26. Therefore, two time-series data (positional coordinate data) are specified in a range 50 mm before the launching direction of the golf ball 2 along the X-axis direction from the center of the golf ball 2. Therefore, in the present embodiment, the left / right approach angle ⁇ and the hitting face angle ⁇ are obtained based on time-series data in a range of 50 mm from the center of the golf ball 2.
  • the shooting interval by the camera 26 is not limited to 1/2000 seconds, and it is only necessary to obtain the left and right approach angle ⁇ and the hitting face angle ⁇ based on the obtained time-series data.
  • the shooting interval is arbitrarily set between 1/10000 seconds and 1/500 seconds.
  • the left and right approach angle ⁇ is a positive (plus) angle on the opposite side of the golfer around the reference line L0, and a negative (minus) angle on the golfer side.
  • the opposite side of the golfer around the reference line L0 is a positive (plus) angle
  • the golfer side is a negative (minus) angle.
  • the estimation unit 90 estimates the left and right launch angle ⁇ and the side spin amount Ss of the golf ball from the measured values of the left and right approach angle ⁇ and the hitting face angle ⁇ .
  • the left and right launch angle ⁇ is an angle formed by a reference line L0 and a line formed by projecting a trajectory of a golf ball immediately after being hit by the golf club head 16 of a golf club swung by a golfer onto a plane.
  • the opposite side of the golfer around the reference line L0 is a positive angle
  • the golfer side is a negative angle.
  • the horizontal axis (X-axis) displays the left and right approach angle ⁇
  • the vertical axis (Y-axis) displays the hitting face angle ⁇ from 0 degree to positive and negative in 0.5 degree units.
  • X-axis displays the left and right approach angle ⁇
  • the vertical axis (Y-axis) displays the hitting face angle ⁇ from 0 degree to positive and negative in 0.5 degree units.
  • Y-axis displays the hitting face angle ⁇ from 0 degree to positive and negative in 0.5 degree units.
  • the left and right approach angles ⁇ and the hitting face angle ⁇ change in units of 0.5 degrees is exemplified, but the angle unit may be arbitrarily set to be smaller than 0.5 degrees.
  • the hatched portion has a left and right launch angle ⁇ corresponding to 0 degree, the range above the hatched portion is positive (rightward), and the range below the hatched portion has a left and right launch angle ⁇ . Negative (left direction) (when golfer is right-handed).
  • the side spin amount Ss is a spin amount around a vertical line passing through the center of the golf ball 2 of the golf ball 2 immediately after being hit by the golf club head 16 swung by the golfer.
  • the positive or negative side spin amount Ss is positive when viewed clockwise in plan view and negative when counterclockwise.
  • the estimation unit 90 specifies the left and right launch angle ⁇ from the measured values of the left and right approach angle ⁇ and the hitting face angle ⁇ based on the first regression formula, and the left and right approach angle ⁇ based on the second regression formula.
  • the side spin amount Ss is specified from the measured value of the hit face angle ⁇ . In FIG.
  • the horizontal axis displays the left and right approach angle ⁇
  • the vertical axis displays the hitting face angle ⁇ from 0 degree to positive and negative in 0.5 degree units.
  • the unit of the angle is arbitrary, for example, smaller than 0.5 degrees.
  • the hatched portion corresponds to zero side spin amount Ss, the range above the hatched portion has a positive side spin amount Ss (slice tendency), and the range below the hatched portion has a negative side spin amount Ss. (Hook tendency) (when golfer is right-handed).
  • the first regression equation and the second regression equation are created as follows.
  • the left and right approach angle ⁇ of the golf club head 16 of the golf club actually swung by the golfer and the hitting face angle ⁇ are measured by the procedure as described above.
  • the left and right launch angle ⁇ and the side spin amount Ss of the golf ball 2 immediately after being hit and hit by the golf club head 16 are measured by a reference measuring instrument.
  • a reference measuring instrument for example, various conventionally known measuring devices as disclosed in Japanese Patent No. 4104384 can be used.
  • a first regression equation is created that specifies the left and right launch angle ⁇ from the left and right approach angle ⁇ and the hitting face angle ⁇ .
  • a second regression equation is created that specifies the side spin amount Ss from the left and right approach angle ⁇ and the hitting face angle ⁇ based on the measured values of the left and right approaching angle ⁇ , the hitting face angle ⁇ , and the side spin rate Ss.
  • the first regression equation is expressed as follows, for example.
  • the estimation unit 90 holds such a first regression equation and a second regression equation. Further, the estimation unit 90 replaces the first regression equation and the second regression equation with a first map that specifies the left and right launch angle ⁇ from the left and right approach angle ⁇ and the hitting face angle ⁇ , and the left and right approach angle ⁇ . And a second map for specifying the side spin amount Ss from the hitting face angle ⁇ .
  • the simulation unit 92 calculates the movement trajectory (ball trajectory) of the golf ball 2 based on the estimated left and right launch angle ⁇ and side spin amount Ss, the initial ball velocity V0 of the golf ball 2 and the vertical launch angle ⁇ of the golf ball 2.
  • a shift amount ⁇ S which is a distance from the reference line L0 to the landing point, is calculated by simulation.
  • the vertical launch angle ⁇ is defined by a line obtained by projecting the trajectory of the golf ball 2 immediately after being hit by the golf club head 16 of the golf club swung by the golfer onto the vertical plane including the reference line L0 and the reference line L0. The angle to make. Note that fixed values predetermined in accordance with the attributes of the golfer can be used as the initial ball velocity V0 and the vertical launch angle ⁇ .
  • the attributes of golfers are classified according to physique (muscular strength) and skill level such as male professional golf, male amateur golfer, female professional golfer, and female amateur golfer.
  • the backspin amount Sb of the golf ball 2 immediately after being hit by the golf club head 16 of the golf club swung by the golfer may be taken into consideration, or the backspin amount Sb is taken into consideration.
  • the initial ball speed V0, the vertical launch angle ⁇ , and the backspin amount Sb are not fixed values, and simulation is performed using the measured values of the initial ball velocity V0, the vertical launch angle ⁇ , and the backspin amount Sb measured by the reference measuring device. It is advantageous to increase the accuracy of the simulation by using these measured values.
  • the classification map creation unit 94 accumulates data including the left and right approach angle ⁇ , the hitting face angle ⁇ , and the shift amount ⁇ S, and based on the accumulated data, the X axis indicating the left and right approach angle ⁇ and the X axis The left and right approach angles ⁇ and the hitting angle on a two-dimensional coordinate with the Y axis indicating the face angle ⁇ at the time of striking and the intersection of the X and Y axes as the left and right approaching angles ⁇ and the hitting face angle ⁇ of zero degrees
  • a classification map D3 that defines a plurality of areas that are demarcated according to the tendency of the spherical muscles specified based on the face angle ⁇ and the shift amount ⁇ S is created.
  • the classification map D3 is stored in the storage unit 64. Note that where the classification map D3 is provided is arbitrary.
  • the relationship between the left / right approach angle ⁇ and the hitting face angle ⁇ and the ball of the golf ball 2 will be described.
  • the trajectory of the golf club head 16 shows an outside-in tendency, so that the launched golf ball 2 is launched leftward.
  • the trajectory of the golf club head 16 shows an inside-out tendency, so that the launched golf ball 2 is launched in the right direction.
  • the golf ball 2 that is hit as the face angle ⁇ at the time of hitting becomes a negative value and the absolute value thereof becomes larger is more likely to be counter-clockwise when viewed from above.
  • the golf ball 2 that is hit as the face angle ⁇ at the time of hitting becomes a positive value and the absolute value thereof becomes larger is likely to be subjected to a clockwise side spin as viewed from above.
  • the combination of the left / right approach angle ⁇ and the hitting face angle ⁇ affects the left / right of the launch direction of the golf ball 2 and the ease of applying side spin, so that the launched golf ball 2 has a slicing tendency, It becomes a ball of fading tendency, straight tendency, draw tendency and hook tendency.
  • the slicing tendency means that when a right-handed golfer hits the golf ball 2, the golf ball 2 bends to the right. In the case of a left-handed golfer, the one that turns to the left.
  • the fade tendency refers to a controlled slicing tendency, in which the landing position of the golf ball 2 launched to the left with respect to the target line returns almost to the target line.
  • the hook tendency means that when a right-handed golfer hits the golf ball 2, the golf ball 2 bends to the left. In the case of a left-handed golfer, the golfer turns to the right.
  • the draw tendency refers to a controlled hook tendency, in which the landing position of the golf ball 2 launched to the right with respect to the target line returns almost to the target line.
  • the straight tendency means that the hit golf ball 2 goes straight without bending. As described above, the ball streak (trajectory) of the golf ball 2 varies depending on the behavior of the golf club head 16 immediately before hitting the golf ball 2.
  • the left and right approach angle ⁇ is set as an X-coordinate value
  • the hitting face angle ⁇ is set as a Y-coordinate value on a two-dimensional coordinate
  • a plane indicated by the two-dimensional coordinate is set as a spherical muscle of the golf ball 2.
  • the classification map D3 includes an X axis that indicates the left and right approach angle ⁇ and a Y axis that is orthogonal to the X axis and indicates the hitting face angle ⁇ , and the intersection of the X axis and the Y axis is the left and right approach angles ⁇ and A plane indicated by a two-dimensional coordinate axis having a face angle ⁇ of 0 when hit is divided into a plurality of areas (regions) corresponding to the spherical muscles of the golf ball 2 and associated with each other.
  • the plurality of areas are demarcated according to the tendency of the spherical muscle specified based on the left / right approach angle ⁇ , the hitting face angle ⁇ , and the shift amount ⁇ S.
  • FIG. 15 is a schematic diagram for explaining the configuration of the classification map D3.
  • the horizontal axis (X-axis) has a left / right approach angle ⁇
  • the vertical axis (Y-axis) has a striking face angle ⁇ from 0 degrees to 0.
  • the data is displayed in units of 5 degrees, and data of the shift amount ⁇ S is arranged at each coordinate point. In the figure, specific numerical values of the data are omitted. In the following, it is assumed that the golfer is right-handed, and in the case of left-handed, the sign is opposite.
  • the classification map D3 corresponds to the combination of the left and right approach angle ⁇ and the hitting face angle ⁇ , the slice area A1, the fade area A2, the straight area A3, and the draw area.
  • Five areas corresponding to the ball of the golf ball 2 such as A4 and hook area A5 are associated with each other.
  • the slice area A1 is an area where the spherical muscle tends to slice
  • the fade area A2 is an area where the spherical muscle tends to fade
  • the straight area A3 is an area where the spherical muscle tends to be straight
  • the draw area A4 is a trend where the spherical muscle tends to draw.
  • the hook area A5 is an area where the spherical muscle tends to hook.
  • the golf club swing type is slice type, fade type, straight type, draw type, hook type Specific to any type. That is, the classification unit 58 corresponds to any of a plurality of types in which the golf swing is stored in the classification map D3 based on the left and right approach angle ⁇ and the hitting face angle ⁇ obtained by the analysis unit 58. To identify.
  • FIG. 16 is a schematic diagram illustrating each area and boundary line.
  • FIG. 16 shows the horizontal approach angle ⁇ on the horizontal axis (X axis) and the face angle ⁇ at impact on the vertical axis (Y axis) in units of 0.5 degrees from 0 degree to positive and negative, respectively, as in FIG.
  • Data of the shift amount ⁇ S is arranged at each coordinate point. In the figure, specific numerical values of the data are omitted.
  • the hatched portion indicated by the symbol LA is the first boundary line, the landing point matches the reference line L0, and the shift amount ⁇ S is zero.
  • the hatched portion indicated by reference numeral M1 indicates a range where the landing point is located on the right side with respect to the reference line L0 and the shift amount ⁇ S is greater than 0 and equal to or less than 10 yards.
  • the hatched portion indicated by reference numeral M2 indicates a range where the landing point is located on the left side with respect to the reference line L0 and the shift amount ⁇ S is 0 or more and 10 yards or less.
  • a portion indicated by a symbol LB is the second boundary line, and the side spin amount Ss corresponds to 0 rpm (straight area A3).
  • the second boundary line LB intersects with the first boundary line LA on the two-dimensional coordinates indicated by the X axis and the Y axis, and has a larger positive slope than the first boundary line LA. ing.
  • a portion indicated by a symbol M3 indicates a range in which the side spin amount Ss is a positive value and is from 0 rpm to 500 rpm.
  • a portion indicated by a symbol M4 indicates a range in which the side spin amount Ss is a negative value and is from 0 rpm to 500 rpm.
  • the upper limit value and lower limit value of the shift amount ⁇ S and the upper limit value and lower limit value of the side spin amount Ss are not limited to the above numerical values, and are arbitrarily set.
  • the region located closer to the positive direction of the X axis and the Y axis is the draw area A4.
  • the region located closer to the negative direction of the X axis and the Y axis is the fade area A2.
  • a region located on the positive side of the Y axis from the draw area A4 and the fade region A2 is the slice area A1.
  • the area located on the negative direction side of the Y axis from the draw area A4 and the fade area A2 is the hook area A5.
  • the portion of the second boundary line LB is the straight area A3.
  • the ball muscles are evaluated by the shift amount ⁇ S.
  • the range of the shift amount ⁇ S of 0 yard ⁇ 10 yards is defined as a good ball line. Therefore, in FIG. 16, a region that falls within the range of 0 yard ⁇ 10 yards, that is, a region indicated by symbols M1, LA, and M2 is evaluated as a good ball.
  • the movement trajectory of the golf ball 2 when viewed in a plane once once draws a convex shape on the right side (left side) of the reference line L0.
  • the technical evaluation as a golf game is lower than when landing without exceeding the reference line L0. Therefore, when the movement trajectory of the golf ball 2 when viewed in plan is bent to draw a convex shape on the right side (left side) of the reference line L0 and landed on the same right side (left side) without exceeding the reference line L0 Will give good evaluation of the ball muscles.
  • the regions indicated by reference signs N ⁇ b> 1 and N ⁇ b> 2 have a shift amount ⁇ S of 0 yard ⁇ 10 yards and a side spin amount Ss of 0 rpm to 500 rpm.
  • the remaining areas O and P except for the areas N1 and N2 that are spherical streaks that exceed the reference line L0 are included. The area surrounded by the bold line) is evaluated as the best bulb.
  • hatching is applied to a portion of the fade area A ⁇ b> 2, the draw area A ⁇ b> 4, and the straight area A ⁇ b> 3 that is evaluated as having good spherical muscles.
  • the straight area A3 is shown by a straight line.
  • the first boundary line LA, the second boundary line LB, and the areas A2, A3, and A4 vary depending on the golf club head 16, the golfer's attributes, and the like. This will be described with reference to FIGS. 17 to 22, the first boundary line LA is not shown.
  • 17 to 19 are examples of a classification map D3 when the golf club is a driver.
  • FIG. 17 shows a male professional golfer (initial speed V0: 70 m / s, vertical launch angle ⁇ : 13 degrees, backspin amount Sb: 3000 rpm.
  • 18 is a male amateur (initial speed V0: 60 m / s, vertical launch angle ⁇ : 15 degrees, backspin amount Sb: 2500 rpm), and
  • FIG. 19 is a female amateur (initial speed V0: 45 m / s, vertical launch angle ⁇ : 17). Degree, backspin amount Sb: 2200 rpm).
  • FIGS. 20 to 22 are examples of the classification map D3 when the golf club is a 7 iron.
  • FIG. 20 shows a male professional golfer (initial speed V0: 53 m / s, vertical launch angle ⁇ : 18 degrees, back spin amount Sb.
  • 21 is a male amateur (initial speed V0: 46 m / s, vertical launch angle ⁇ : 19 degrees, backspin amount Sb: 5000 rpm)
  • FIG. 22 is a female amateur (initial speed V0: 35 m / s, vertical launch angle ⁇ ). : 20 degrees, backspin amount Sb: 4000 rpm).
  • FIGS. 17 to 22 it can be seen that the shape and area of each area are different between the driver and the No. 7 iron.
  • the classification map D3 is created according to the selection device 10. Strictly speaking, the inclinations of the first and second boundary lines LA and LB slightly change due to the influence of the bulge of the face surface 1602 of the golf club head 16 and the moment of inertia of the golf club head 16.
  • FIG. 23 is a diagram illustrating a display example of a simplified classification map D3.
  • the fade area A2 and the draw area A4 are shown in an oval shape for the convenience of visually simplifying and displaying each area, and the fade area A2 and the draw area A4 partially overlap with each other.
  • the area A4 protrudes outside the first and second boundary lines LA and LB, strictly speaking, as shown in FIG. 15 described above, the fade area A2, the draw area A4, the first and second areas
  • the boundary lines LA and LB do not overlap each other.
  • an arrow F1 indicating the moving direction of the golf club head 16 with respect to the reference line L0 is shown in the upper part of FIG. 23, and the left and right approach angle ⁇ is schematically shown.
  • an arrow F2 indicating the direction of the face surface 1602 of the golf club head 16 is shown, and the hitting face angle ⁇ is schematically shown. Further, the areas of the fade area A2, the draw area A4, and the straight area A3 increase or decrease depending on which of the three types of evaluation described above is adopted.
  • the classification unit 58 uses the classification map D3 to identify which type of golf club swing falls into a predetermined type based on the left / right approach angle ⁇ and the hitting face angle ⁇ . To do.
  • the selection unit 60 selects an optimal golf club according to the type specified by the classification unit 58.
  • selection information D4 in which a swing type of a golf club and a golf club optimal for the type are associated is prepared in advance.
  • the selection information D4 is stored in the storage unit 64. ing. Note that where the selection information D4 is stored is arbitrary.
  • the selection information D4 is information in which the swing type of the golf club is associated with the golf club most suitable for the type.
  • the format of the selection information D4 is arbitrary, for example, including a data table in which a golf club swing type and a golf club optimum for the type are associated with each other.
  • the golf club most suitable for the type is a golf club that is advantageous in correcting the spherical muscle when the golf ball 2 is hit with the type of swing.
  • the selection unit 60 selects an optimal golf club from the selection information D4 based on the golf club swing type specified by the classification unit 58.
  • the center of gravity distance and the center of gravity angle of the golf club head 16 are varied. What is obtained by setting is used. That is, the golf club head 16 that is optimal for each type described above is configured so that at least one of the center-of-gravity distance and the center-of-gravity angle is different.
  • the center of gravity distance of the golf club head 16 is the shortest distance from the center of gravity G of the golf club head 16 to the center axis S (shaft axis) of the golf club shaft or an extension of the center axis S.
  • the center-of-gravity angle means that the golf club head 16 is placed on the horizontal plane according to the set lie angle, and the shortest straight line and the central axis S of the golf club shaft or an extension line of the central axis S are set from the vertical direction to the horizontal plane.
  • the barycenter angle ⁇ is an angle representing the direction of the shortest straight line. And it can be made suitable for each said type by changing the value of the gravity center distance L into large and small according to each said type.
  • the type corresponding to the slice area A1 selects the golf club head 16 with a short center of gravity distance L (short)
  • the type corresponding to the hook area A5 selects the golf club head 16 with a large center length L (long).
  • the difference in the center of gravity distance L between the golf club heads 16 is preferably 3 mm to 10 mm.
  • the type corresponding to the slice area A1 selects the golf club head 16 having a large center of gravity angle ⁇
  • the type corresponding to the hook area A5 selects the golf club head 16 having a small center of gravity angle ⁇ .
  • the above-described center-of-gravity distance L can be obtained as follows, for example.
  • the measurement is performed by a seesaw type balance 70 that can swing in the direction of an arrow U around a fulcrum 71.
  • the balance 70 has a shaft pin 72 having a fit with no gap with respect to the hosel hole of the golf club head 16.
  • the balance 73 is balanced so that the arm 73 is horizontal. Yes.
  • the center of gravity distance L of the center of gravity G of the golf club head 16 from the golf club shaft axis is measured by mounting and fixing the golf club head 16 having a mass W on the shaft pin 72.
  • the distance FGL can also be used.
  • the “center of gravity distance F GL on the face surface 1602” is a point g where a perpendicular line L1 perpendicular to the face surface 1602 passing through the center of gravity G intersects the face surface 1602 and golf.
  • This is the shortest distance between the center axis S of the club shaft or an extension line of the center axis S projected onto the face surface 1602 or a surface obtained by extending the face surface 1602.
  • the point g can be detected using a conventionally known center-of-gravity measuring instrument. For example, the method described in paragraphs 0028 to 0030 of Japanese Patent No. 4233886 can be used.
  • the detection method of the point g is arbitrary as long as the perpendicular L1 perpendicular to the face surface 1602 passing through the center of gravity G intersects the face surface 1602. Then, the value of the centroid distance F GL on the face surface 1602 in response to each type of the large, by changing the small, may be suitable to each type of the.
  • the type corresponding to the slice area A1 is smaller centroid distance F GL on the face surface 1602 (short) selects a golf club head 16
  • the type corresponding to the hook area A5 is the centroid distance F GL on the face surface 1602 A golf club head 16 having a large (long) is selected.
  • the grip angle ⁇ in the golf club when the grip angle ⁇ in the golf club is determined, the grip angle ⁇ can be used instead of the barycentric angle ⁇ .
  • FIG. 27A is a perspective view of an iron-based golf club 4.
  • the golf club 4 includes a golf club shaft 5, a golf club head 16 attached to the front end portion of the golf club shaft 5, and a grip 7 attached to the rear end portion of the golf club shaft 5.
  • FIG. 27B is a cross-sectional view of the golf club 4 taken along the line XX ′ shown in FIG.
  • a grip 7 is provided so as to surround the golf club shaft 5, and a partially protruding protrusion is provided on a part of the outer periphery of the grip 7. This protrusion is provided at the same circumferential position in the longitudinal direction of the golf club shaft 5 to form a back line 7A.
  • FIG. 27A is a perspective view of an iron-based golf club 4.
  • the golf club 4 includes a golf club shaft 5, a golf club head 16 attached to the front end portion of the golf club shaft 5, and a grip 7 attached to the rear end portion of the golf club shaft 5.
  • FIG. 27B is a cross-sectional view
  • the back line 7 A has a flat portion 7 B formed on a part of the inner peripheral surface of the grip 7 before mounting.
  • the back line 7 A is It is formed in a convex shape.
  • the back line 7 ⁇ / b> A is a specific part for specifying the mounting direction when the grip 7 is mounted on the golf club shaft 5.
  • the grip angle ⁇ is information indicating the mounting direction of the specific part (back line 7A) with respect to the direction of the face surface 1602 of the golf club head 16.
  • the specific portion is not limited to the back line 7A, and may be a visually recognizable index formed on the surface of the golf club shaft 5 or the surface of the grip 7. For example, as shown in FIGS.
  • a grip position mark 7 ⁇ / b> C is formed on the surface of the grip 7 for displaying a grip position where the thumbs of the left and right hands are applied when the grip 7 is gripped.
  • the grip position mark 7C may be a specific part.
  • FIG. 28A is a front view for explaining a state in which the golf club 4 is installed at a normal address position
  • FIG. 28B is a plan view
  • FIGS. 29A, 29B, and 29C are views for explaining the relationship between the grip angle ⁇ and the orientation of the face surface 1602 of the golf club 4.
  • the grip angle ⁇ is set by placing the golf club 4 on a horizontal reference plane B (horizontal plane) according to the lie angle, and the grip 7 and the golf club.
  • a horizontal reference plane B horizontal plane
  • the horizontal line on the face surface 1602 of the golf club head 16 refers to a straight line on the face surface 1602 parallel to the reference surface B in a state where the golf club 4 is installed at a normal address position (installed according to the lie angle).
  • This horizontal line is generally substituted by a score line 1630 or a straight line parallel to the score line 1630.
  • the score line 1630 is set to indicate a reference for the face surface 1602. If the score line 1630 is not linear, for example, a line parallel to the reference plane B is marked on the face surface 1602 on the face surface 1602 in a state where the score line 1630 is installed at a normal address position. It can be a horizontal line.
  • setting the golf club 4 at the normal address position means that the golf club head 16 is set at the lie angle and the leading axis S and the reading are as shown in FIGS. 28 (a) and 28 (b).
  • the score line 1630 is not linear, the fact that the central axis S and the leading edge 1620 are parallel to each other indicates a state in which the face angle is 0 degree.
  • the grip angle ⁇ is defined as a negative (minus) angle when the face surface 1602 closes around 0 degrees, and a positive (plus) angle when the face surface 1602 opens.
  • the grip angle ⁇ can be made suitable for each type.
  • the type corresponding to the slice area A1 selects the golf club head 16 having a negative grip angle ⁇ (with the face surface 1602 closed), and the type corresponding to the hook area A5 has a positive grip angle ⁇ (the face surface). The golf club head 16 (with 1602 open) is selected.
  • the golfer grips the golf club with reference to a mark or display displayed on the grip. Therefore, by changing the grip angle ⁇ , the orientation of the golf club head 16 facing the face surface 1602 is changed. Furthermore, the moving direction of the face surface 1602 immediately before hitting the golf ball 2 changes. For this reason, the optimal golf club can be provided according to each said type.
  • a golf club obtained by setting various face progressions of the golf club head 16 is preferably used as the golf club selected by the selection unit 60.
  • the face progression F P the distance from the center axis S to the most advanced position C of the golf club head 16. That is, face progression F P is the distance from the central axis S to the leading edge is a place where the face surface 1602 and the sole portion 1604 is in contact.
  • the magnitude of the face progression F P depending on the type of the can to be suitable for each type of the. In other words, the type corresponding to the slice area A1 is selected golf club head 16 face progression F P is small, the type corresponding to the hook area A5 is selected golf club head 16 face progression F P is large.
  • the golf club head 16 having a small face progression is called a gooseneck or offset.
  • the golf club selected by the selection unit 60 is a wood type
  • a golf club obtained by setting various face angles of the golf club head 16 is preferably used.
  • the face angle is defined as a negative (minus) angle in the direction in which the face surface 1602 closes around 0 degree, and a positive (plus) angle in the direction in which the face surface 1602 opens. That is, by changing the sign of the face angle of the golf club head 16 and the magnitude of the absolute value according to each type, the golf club head 16 can be made suitable for each type.
  • the type corresponding to the slice area A1 selects the golf club head 16 having a negative face angle (the face surface 1602 is closed), and the type corresponding to the hook area A5 has a positive face angle (the face surface 1602).
  • the golf club head 16 is selected.
  • the type corresponding to the slice area A1 may be selected as the golf club head 16 having a hook face
  • the type corresponding to the hook area A5 may be selected as the golf club head 16 having a slice face.
  • the golf club selected by the selection unit 60 is an iron type
  • a golf club obtained by setting various lie angles of the golf club head 16 is preferably used.
  • the type corresponding to the slice area A1 selects the golf club head 16 having an upright lie angle
  • the type corresponding to the hook area A5 selects the golf club head 16 having a flat lie angle.
  • FIG. 31 is a diagram in which a change in the face angle ⁇ at the time of hitting when the lie angle of the golf club is changed is measured.
  • a driver As a golf club, a driver, a 5 iron, a 7 iron, No. 9 iron and sand wedge are measured. That is, since the loft angle is set for the golf club head 16, the orientation of the face surface 1602 (the direction of the normal of the face surface 1602) changes to the left and right as the lie angle changes. Also, the change in the direction of the normal of the face surface 1602 is larger as the club has a larger loft angle.
  • the measurement point P2 after the lie angle adjustment is plotted on the classification map D3. It is confirmed that the ball muscle has entered the draw area A4 (optimum trajectory area) and the ball muscle has been corrected. That is, in the above procedure, the selection unit 60 selects a golf club having a lie angle sufficient to correct the ball muscle by adjusting the hitting face angle ⁇ in the + direction (or ⁇ direction).
  • the lie angle of the golf club head 16 when the lie angle of the golf club head 16 is adjusted, a schematic diagram showing the degree of adjustment of the lie angle and the change of the face angle ⁇ at the time of hitting are shown by the positions of the measurement points P1 and P2. A figure has been added.
  • information indicating that the golf club is optimal for each of the above-mentioned types is presented on a display medium such as a sticker or tag attached to the golf club. It is preferable. A golfer can also select a golf club suitable for his / her golf swing from a large number of golf clubs using the display medium as a guide.
  • the output unit 62 displays information for specifying the golf club selected by the selection unit 60, that is, the golf club information D5 on the screen by the display 46, or prints it on a print medium by the printer 48 and outputs it.
  • the golf club information D5 is output to a disk-shaped recording medium via the disk device 40, or is output to an external device via the input / output interface 50.
  • the golf club information D5 is stored in advance in the storage unit 64, and the output unit 62 reads out the golf club information D5 corresponding to the golf club from the storage unit 64 based on the golf club selected by the selection unit 60. Output. It is arbitrary where the golf club information D5 is stored.
  • the golf club information includes various information such as a golf club product name, product number, various specifications, an external view, and a photograph.
  • the image forming unit 80 displays on the basis of the data of the classification map D3 read from the storage unit 64 and the data of the measurement points that are the data of the left and right approach angles ⁇ and the hitting face angle ⁇ supplied from the analysis unit 56. Image data for printing and image data for printer output are formed.
  • the measurement point may be one data obtained by one measurement or may be an average value of N data obtained by N measurements (N is a natural number of 2 or more). Good. If the measurement point is an average value of N pieces of data, it is advantageous in suppressing variation of the measurement point. Note that such calculation of the average value may be performed by the analysis unit 56 or the image forming unit 80, and where it is performed is arbitrary.
  • the image output unit 82 supplies the display display image data supplied from the image forming unit 80 to the display 46 to display the swing characteristics of the golf club on the display screen of the display 46.
  • the image output unit 82 also supplies the printer output image data supplied from the image forming unit 80 to the printer 48, thereby printing the swing characteristics of the golf club on paper as a recording medium. Create a display chart for.
  • the display screen displayed on the display 46 by the image forming unit 80 and the image output unit 82 and the display chart created by the printer 48 are as illustrated in FIG.
  • the display screen generated by the display screen of the display 46 and the printer 48 includes a two-dimensional coordinate axis including an X axis indicating the left and right approach angle ⁇ , and a Y axis orthogonal to the X axis and indicating the face angle ⁇ at impact.
  • One boundary line LA, second boundary line LB, various areas A1 to A5, and measurement points are displayed.
  • the selection device 10 generates the classification map D3, displays the swing characteristics of the golf club by the golfer on the display, generates the display chart showing the swing characteristics, and selects the golf club. And do.
  • an operation for creating the classification map D3, a swing feature display operation and a display chart creation operation, and a golf club selection operation will be sequentially described.
  • FIG. 32 is a flowchart for explaining the creation operation of the classification map D3 of the golf club selection apparatus 10.
  • the control unit 12 causes the detector 1202 to detect the golf club head 16, thereby causing the camera 26 to perform a shooting operation and image data.
  • step S100 photographing step
  • the image data is supplied to the image processing unit 54 via the signal processing unit 52, and each marker feature point is extracted from the image data by the extraction unit 54a (step S102: extraction step).
  • the calculation unit 54b is a three-dimensional shape data D1 (three-dimensional shape model) that reproduces the golf club head 16 stored in the storage unit 64, and a three-dimensional shape model corresponding to three or more marker feature points. Based on the corresponding point position information D2 indicating the position of the corresponding point, the position of the corresponding point matches the position in the three-dimensional coordinate system of the three or more marker feature points extracted by the extraction unit 54a. By determining the position and orientation of the three-dimensional shape model, time-series data of the position and orientation of the three-dimensional shape model that reproduces the behavior of the golf club head 16 is calculated (step S104: calculation step).
  • the analysis unit 56 obtains the left / right approach angle ⁇ and the hitting face angle ⁇ from the time-series data of the position and orientation of the three-dimensional shape model (step S106: analysis step).
  • the estimation unit 90 estimates the left and right launch angle ⁇ and the side spin amount Ss from the measured values of the left and right approach angle ⁇ and the hitting face angle ⁇ (step S108: estimation step).
  • the estimation of the left and right launch angle ⁇ and the side spin amount Ss in the estimation step is performed by the first regression equation for specifying the left and right launch angle ⁇ from the left and right approach angle ⁇ and the hitting face angle ⁇ , the left and right approach angle ⁇ and the impact.
  • the second regression equation for specifying the side spin amount Ss from the hour face angle ⁇ is used.
  • the simulation unit 92 determines the movement trajectory of the golf ball 2 based on the estimated left and right launch angle ⁇ and the side spin amount Ss, the initial ball speed of the golf ball 2, and the vertical launch angle of the golf ball 2.
  • a shift amount ⁇ S which is a distance from the reference line L0 to the landing point, is calculated by simulation (step S110: simulation step).
  • step S112 classification map creation step.
  • the X-axis indicating the left-right approach angle ⁇ and the Y-axis perpendicular to the X-axis and indicating the face angle ⁇ at the time of striking are provided.
  • a two-dimensional coordinate axis set to zero degrees is set, and a plurality of boundaries divided according to the tendency of the spherical muscle specified based on the accumulated left and right approach angle ⁇ , the hitting face angle ⁇ , and the shift amount ⁇ S are set.
  • a classification map D3 in which various areas are defined is created (step S114: classification map creation step).
  • the created classification map D3 is stored in the storage unit 64.
  • the creation of the classification map D3 is thus completed.
  • the classification map D3 is created for each golfer attribute (male professional golfer, male amateur, female professional golfer, female amateur) and for each golf club type (driver, iron, count).
  • the classification map D3 corresponding to the attribute and the type of golf club can be created.
  • FIG. 33 is a flowchart for explaining the swing feature display operation and display chart creation operation by the golf club selection apparatus 10. Steps S200 to S206 are the same as steps S100 to S106 in FIG.
  • step S208 the image forming unit 80 converts the data of the classification map D3 read from the storage unit 64 and the data of the measurement points supplied from the analysis unit 56 (data of the left and right approach angle ⁇ and the hitting face angle ⁇ ). Based on this, image data for display is formed and image data for printer output is formed (step S208).
  • the image output unit 82 displays the two-dimensional coordinate axes including the X axis and the Y axis on the display screen of the display 46 based on the display display image data supplied from the image forming unit 80 (step S210: coordinate axis display). Step). Next, the image output unit 82 displays the first boundary line LA and the second boundary line LB on the display screen of the display 46 based on the image data for display display supplied from the image forming unit 80 ( Step S212: boundary line display step).
  • the image output unit 82 displays a slice area A1, a fade area A2, a straight area A3, a draw area A4, a hook on the display screen of the display 46 based on the display display image data supplied from the image forming unit 80.
  • Area A5 is displayed (step S214: various area display step). In other words, the image output unit 82 displays a plurality of areas A1 to A5 that are divided according to the tendency of the spherical muscles.
  • the image output unit 82 displays the measurement points on the display screen of the display 46 based on the display display image data supplied from the image forming unit 80 (step S216: measurement point display step). As a result, the swing feature is displayed on the display screen of the display 46, as shown in FIG.
  • the image output unit 82 supplies the printer output image data supplied from the image forming unit 80 to the printer 48, thereby printing the swing characteristics of the golf club on a recording medium, thereby displaying a swing display chart.
  • Create step S2128.
  • a display chart showing the swing characteristics is output.
  • a plurality of classification maps D3 are prepared in advance according to the golfer's attributes, and the classification map D3 corresponding to the customer's attribute is selected to select each area. If displayed, the swing characteristics reflecting the customer attributes can be presented, which is advantageous in ensuring customer satisfaction.
  • FIG. 34 is a flowchart for explaining the selecting operation of the golf club selecting apparatus 10. Steps S300 to S306 are the same as steps S100 to S106 in FIG.
  • step S308 the classification unit 58 uses the classification map D3 to determine which type of golf club swing is a predetermined type based on the left / right approach angle ⁇ and the hitting face angle ⁇ . (Step S308: classification step).
  • the selection unit 60 selects a golf club corresponding to the specified type using the selection information D4 (step S310: selection step).
  • the output unit 62 reads out and outputs the golf club information D5 corresponding to the selected golf club from the storage unit 64 (step S312: output step). Accordingly, a golf club suitable for the golfer's swing type is selected.
  • the shift amount ⁇ S estimated based on the left and right approach angle ⁇ and the hitting face angle ⁇ of the golf club head 16 immediately before hitting the golf ball 2 and estimated from the left and right approaching angle ⁇ and the hitting face angle ⁇ is obtained.
  • the type of golf swing is classified, which is advantageous for more accurately classifying the type of golf swing affecting the spherical muscles such as hooks and slices of the golf ball 2.
  • a golf club is selected based on the classification result, it is advantageous in selecting an optimum golf club for a golfer.
  • the following operational effects are achieved.
  • a plurality of areas that are divided according to the tendency and a measurement point that measures the behavior of the golf club head 16 when the golfer actually swings are displayed. Therefore, it is advantageous in providing a swing feature that affects the spherical muscles such as slices and hooks in a simple and easy-to-understand manner based on which of the plurality of areas the measurement point is located.
  • a slice area A1, a fade area A2, a straight area A3, a draw area A4, and a hook area A5 are displayed as a plurality of areas. Based on which area the measurement point is located on It is even more advantageous in providing swing features that affect the ball muscles such as slices and hooks in a simple and easy-to-understand manner.
  • the swing of how to correct each of the left and right approach angles ⁇ and the hitting face angle ⁇ by grasping the deviation of the measurement points with respect to the fade area A2 and the draw area A4 which are ideal swings. This is advantageous in understanding the improvements.
  • the portion corresponding to the predetermined shift amount ⁇ S or less of the draw area A4, the fade area A2, and the straight area A3 is displayed as an area of a good ball, so that the swing feature can be accurately determined. It is advantageous in providing. Further, in the present embodiment, a portion corresponding to a predetermined side spin amount Ss or less of the draw area A4, the fade area A2, and the straight area A3 is displayed as a good spherical muscle area, so that the swing feature is accurately determined. It will be advantageous in providing.
  • the left and right launch angle ⁇ and the side spin amount Ss are specified. This is advantageous in simplifying the processing required for the above.
  • the simulation of the movement trajectory of the golf ball 2 is performed in consideration of the backspin amount of the golf ball 2, so that the accuracy of the simulation of the movement trajectory is improved and the swing characteristics are provided accurately. This is advantageous.
  • the ball initial speed and the vertical launch angle are determined using a fixed value that is determined in advance according to the attribute of the golfer as the vertical launch angle. There is no need to actually measure and it is advantageous in performing a simple simulation.
  • the ball initial velocity and the vertical launch angle are measured at the time of hitting by the golfer, and the measured ball initial velocity and the vertical launch angle are used when simulating the movement trajectory of the golf ball 2. This is advantageous in improving the accuracy of the trajectory simulation and providing the swing characteristics accurately.
  • the display chart of the swing of the golf club of this Embodiment the following effects are show
  • the plurality of areas include a slice area A1, a fade area A2, a straight area A3, a draw area A4, and a hook area A5.
  • the relationship with the area can be more easily understood, that is, it is more advantageous to easily understand the characteristics of the swing. Further, since it can be carried or stored as a medium, it is more advantageous in increasing the value of services provided to golfers.
  • the characteristics of the swing can be easily understood based on the area where the measurement points are displayed. This is advantageous.
  • a display chart having a two-dimensional coordinate axis and an area may be prepared in advance, and the measurement points may be printed later by the printer 48. This is advantageous in reducing the printing time.
  • the area corresponding to the ball of the golf ball 2 is divided into five areas such as a slice area A1, a fade area A2, a straight area A3, a draw area A4, and a hook area A5 has been described.
  • a slice area A1, a fade area A2, a straight area A3, a draw area A4, and a hook area A5 has been described.
  • it may be divided into three areas such as slice area A1, straight area A3, and hook area A5.
  • the range of each area can also be set as appropriate according to the concept of those skilled in the art, for example, by increasing the tolerance of bending to increase the range of the straight area A3.

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Abstract

Selon l'invention, afin de représenter avec précision des caractéristiques de swing qui influent sur la position d'impact sur une balle de golf, un axe de coordonnées bidimensionnelles, une pluralité de zones, et un point de mesure sont affichés sur un écran d'affichage d'un affichage (46), ledit axe de coordonnées bidimensionnelles indiquant un angle d'approche gauche-droite (θ) et un angle de face de frappe (φ), ladite pluralité de zones étant divisée en prenant en compte la quantité de décalage (ΔS) estimée à partir de l'angle d'approche gauche-droite (θ) et de l'angle de face de frappe (φ) et en fonction de la tendance pour la course de la balle de golf (2), et ledit point de mesure mesurant le comportement d'une tête de club de golf (16) lorsqu'un golfeur effectue réellement un swing. Une zone de crochet à droite (A1), une zone de léger crochet à droite (A2), une zone de ligne droite (A3), une zone de léger crochet à gauche (A4) et une zone de crochet à gauche (A5) sont affichées comme étant la pluralité de zones, permettant ainsi la représentation facile et la compréhension rapide de l'effet de caractéristiques de swing comme un crochet à droite ou à gauche, etc. sur la course de la balle, sur la base de la nature de la zone dans laquelle le point de mesure est positionné, et rendant ainsi la présente invention encore plus utile.
PCT/JP2016/069692 2015-07-07 2016-07-01 Procédé d'affichage de swing de club de golf et diagramme d'affichage Ceased WO2017006875A1 (fr)

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EP4091680A4 (fr) * 2020-01-16 2023-07-26 Creatz Inc. Procédé et système de mesure d'une quantité physique associée à un club de golf et support d'enregistrement non transitoire lisible par ordinateur

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KR102807854B1 (ko) * 2022-04-27 2025-05-16 주식회사 크리에이츠 골프 공에 관한 구질 정보를 제공하는 방법, 시스템 및 비일시성의 컴퓨터 판독 가능한 기록 매체
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