WO2013051277A1 - Système de mesure de déformation de club de golf, procédé de mesure et dispositif de mesure - Google Patents

Système de mesure de déformation de club de golf, procédé de mesure et dispositif de mesure Download PDF

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Publication number
WO2013051277A1
WO2013051277A1 PCT/JP2012/006399 JP2012006399W WO2013051277A1 WO 2013051277 A1 WO2013051277 A1 WO 2013051277A1 JP 2012006399 W JP2012006399 W JP 2012006399W WO 2013051277 A1 WO2013051277 A1 WO 2013051277A1
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WIPO (PCT)
Prior art keywords
golf club
deformation
imaging device
measuring
golf
Prior art date
Application number
PCT/JP2012/006399
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English (en)
Japanese (ja)
Inventor
高尾　浩二
松永　英夫
浩正 岩出
Original Assignee
株式会社ブリヂストン
ブリヂストンスポーツ株式会社
Priority date (The priority date 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 date listed.)
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Application filed by 株式会社ブリヂストン, ブリヂストンスポーツ株式会社 filed Critical 株式会社ブリヂストン
Priority to JP2013537423A priority Critical patent/JP6078470B2/ja
Priority to CN201280049090.2A priority patent/CN103857445B/zh
Priority to US14/349,012 priority patent/US20150038249A1/en
Publication of WO2013051277A1 publication Critical patent/WO2013051277A1/fr

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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
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/42—Devices for measuring, verifying, correcting or customising the inherent characteristics of golf clubs, bats, rackets or the like, e.g. measuring the maximum torque a batting shaft can withstand
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/60—Type of objects
    • G06V20/64—Three-dimensional objects
    • G06V20/647—Three-dimensional objects by matching two-dimensional images to three-dimensional objects
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/20—Movements or behaviour, e.g. gesture recognition
    • G06V40/23—Recognition of whole body movements, e.g. for sport training
    • 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
    • A63B2220/807—Photo cameras
    • 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 measurement system, a measurement method, and a measurement apparatus of deformation of a golf club at the time of golf swing.
  • the flight direction of the ball is influenced by factors such as the amount of backspin and the launch angle in the golf swing. These factors are known to be greatly affected by, for example, the movement of a golf club head (hereinafter simply referred to as a head) when the head strikes a golf ball (impact).
  • a head a golf club head
  • impact a golf ball
  • the shaft of the golf club is deformed according to the weight of the head of the golf club and the force applied from the golfer to the golf club.
  • the deformation of the golf club shaft is generally referred to as bending. This tendency is believed to have a very significant effect on the golfer in achieving the desired golf swing.
  • a method has been proposed in which a strain gauge is attached to a golf club and a strain generated on a shaft in a golf swing is measured (see, for example, Patent Document 1).
  • a strain gauge can be attached on the surface of the shaft of a golf club to measure an incursion on the shaft during a golf swing.
  • Patent Document 2 it is necessary to correct the relative positional relationship between imaging devices in order to obtain three-dimensional position coordinates of a marker. As the number of imaging devices increases, the correction naturally takes time, and it is impossible to easily measure the deformation of the golf club.
  • the deformation of the golf club at the time of the golf swing can not be easily measured for the golf swing by the golfer as usual.
  • an object of the present invention made in view of such a point is a measurement system, a measurement method and a measurement apparatus for measuring the deformation of a golf club, which can easily measure the deformation of a golf club for a golf swing by a golfer as usual. To provide.
  • a measurement system of deformation of a golf club is: A measuring system for measuring the deformation of a golf club when the golfer swings the golf club, An imaging device attached to the golf club in a direction including at least one identification feature attached to the golf club capable of identifying a position on the golf club; A measuring device that measures deformation of the golf club based on position information of the at least one identification feature acquired from an image of the golf club at the time of a swing captured by the imaging device; And the like.
  • the deformation of the golf club at the time of the usual golf swing by the golfer can be easily measured.
  • the measuring device is An image acquisition unit for acquiring an image of the golf club at the time of swing from an imaging device; A position information acquisition unit that recognizes the at least one identification feature from the acquired image and acquires position information of the recognized at least one identification feature; It is preferable to have the measurement part which measures the deformation
  • the at least one identification feature is provided on the head of the golf club.
  • Measuring the behavior of the head of the golf club and / or the bending of the shaft as the deformation of the golf club is the movement of the head and / or the bending of the shaft of the golf club be able to.
  • the imaging device is less than 90 g.
  • a method of measuring deformation of a golf club is: A measuring method for measuring the deformation of a golf club when the golfer swings the golf club, During a golf swing using a golf club having at least one identification feature that can specify a position on the golf club and an imaging device attached to a direction including the identification feature, the imaging device Obtaining an image, Acquiring an image of the golf club at the time of swing from the imaging device; Recognizing the at least one identification feature from an image captured by the imaging device, and acquiring position information of the recognized at least one identification feature; Measuring the deformation of the golf club based on the acquired position information; It is characterized by including.
  • the method of measuring the deformation of a golf club According to the method of measuring the deformation of a golf club according to the present invention, it is possible to easily measure the deformation of a golf club during a golf swing as usual by a golfer.
  • a measuring device of a golf club deformation is: A measuring device for measuring the deformation of a golf club when the golfer swings the golf club, The golf club at the time of a swing imaged by an imaging device attached to the golf club in a direction including at least one identification feature attached to the golf club that can locate the position on the golf club The deformation of the golf club is measured based on position information of the at least one identification feature acquired from an image.
  • the measuring apparatus of the deformation of the golf club According to the measuring apparatus of the deformation of the golf club according to the present invention, it is possible to easily measure the deformation of the golf club during the usual golf swing by the golfer.
  • the predetermined measurement is made based on the image of the golf swing acquired by the imaging device attached to the golf club in the direction including at least one identification feature attached to the golf club.
  • FIG. 5 is a flowchart for explaining a method of measuring deformation of a golf club according to an embodiment of the present invention. It is a figure for demonstrating the relationship of the projection surface of the imaging device shown in FIG. 1, and the head and shaft of a golf club. It is a graph which shows an example of the image of the golf club at the time of the golf swing imaged with the imaging device shown in FIG. It is a figure which shows an example of the time transition of the position of each marker in the X-axis direction on the projection plane of an imaging device.
  • FIG. 1 is a view for explaining a measurement system 1 of golf club deformation according to an embodiment of the present invention.
  • a measurement system 1 for golf club deformation shown in FIG. 1 includes a measurement device 2 and an imaging device 4 attached to the golf club 3.
  • the golf club 3 includes a shaft 5, a head 6, and a grip 7 as in a conventional golf club.
  • the imaging device 4 is attached to the shaft 5 of the golf club 3 so that the optical axis is substantially parallel to the shaft axis of the shaft 5 in a direction including identification features to be described later. .
  • the attachment position of the imaging device 4 on the shaft 5 is, for example, immediately below or in the vicinity of the grip 7 (directly in the illustrated example), a position where the golfer 8 can perform a usual golf swing.
  • the position of the imaging device 4 is less likely to be affected by the deformation of the golf club 3 during the golf swing, and an image of the golf club 3 is acquired over a wide range
  • the imaging device 4 is configured of, for example, a digital high speed camera or a wireless camera.
  • the frame rate of the camera may be 30 fps (frames per second) or less for a wireless camera, and may be more than 30 fps for a digital high-speed camera.
  • the imaging device 4 is lightweight to the extent that the golfer 8 can perform a usual golf swing using the golf club 3.
  • the weight of the imaging device 4 is preferably less than 90 g. More preferably, the imaging device 4 is 60 g or less. As shown in Table 1, when the weight of the imaging device 4 is 90 g or more, it can be seen that the head speed is significantly reduced, and when the imaging device 4 is 60 g or less, the head speed is hardly affected.
  • the weight of the imaging device 4 includes the weight of the camera body constituting the imaging device 4, the camera lens, and the member for attaching the imaging device 4 to the shaft 5.
  • the imaging device 4 when the imaging device 4 is configured by a device other than a wireless camera, wiring between the imaging device 4 and the measuring device 2 is performed so as not to obstruct the golf swing by the golfer 8. There are also times when Note that, even when the imaging device 4 is configured by a device other than a wireless camera, when the removable storage medium can be incorporated in the imaging device 4, it is not necessary to draw the wiring.
  • the golf club 3 is provided with at least one identification feature (not shown) that can identify the position on the golf club.
  • An identification feature is a feature that can be distinguished from other parts in image processing, for example, a logo mark or letters attached to the head of a commercially available golf club, and a marker as described in detail with reference to FIG. It may be M1 to M3.
  • the identification feature is applied to the golf club 3 using, for example, a reflective tape, a paint or the like. Even if it is another material, if it is the material which contrast with a surrounding pixel becomes more than predetermined value on image processing, it can be used for an identification feature.
  • the measuring device 2 is configured of, for example, a personal computer or the like including a CPU (Central Processing Unit), and includes an image acquiring unit, a position information acquiring unit, and a measuring unit (not shown). Furthermore, the measuring apparatus 2 can also be provided with a display part, and can also be comprised so that the result of having measured deformation of a golf club may be displayed on a display part.
  • the functions of the image acquisition unit, the position information acquisition unit, and the measurement unit will be described later with reference to FIG.
  • the measurement device 2 performs a measurement process on the image captured by the imaging device 4, and the golfer 8 Measure the deformation of the golf club in the golf swing.
  • the measurement method implemented in the measurement system 1 will be described in more detail.
  • FIG. 2 is a flow chart for explaining the method of measuring the deformation of the golf club according to one embodiment of the present invention.
  • an image of a golf club during a golf swing is captured by the imaging device 4 (step S01).
  • the measuring device 2 acquires an image of the golf club at the time of golf swing, for example, the head 6, from the imaging device 4 by the image acquiring unit (step S02).
  • the image of the golf club may be moving image data of any format captured by the imaging device 4.
  • the measuring device 2 extracts arbitrary image data from the moving image data captured by the imaging device 4 in step S01 by the position information acquiring unit, and recognizes and recognizes an identification feature on the head 6 for the extracted image data.
  • the position information of the identification feature is acquired (step S03).
  • the position information acquisition unit extracts the identification feature by the circle fitting method, and acquires the coordinates of the center position as position information Do.
  • the coordinates are, for example, coordinates on the virtual projection plane 10 of the imaging device 4 described later with reference to FIGS. 3 and 4.
  • the measuring device 2 measures the deformation of the golf club based on the position information acquired in step S03 using the measuring unit (step S04).
  • the measurement unit can measure at least one of the movement of the head 6 and the bending of the shaft 5.
  • the measurement unit may measure the movement of the head 6 and the bending of the shaft 5 based on the position of the head 6 with respect to the imaging device 4.
  • the measurement unit measures the position of the imaging device 4 on the projection surface 10 as the position of the head 6.
  • the measurement unit can also calculate the time transition of the position of the head 6 on the projection surface 10, and measure the movement of the head 6 and the transition of the state of the shaft 5 during the golf swing.
  • the steps S03 and S04 will be described in more detail by describing the projection surface 10 of the imaging device 4 with reference to FIGS. 3 and 4.
  • FIG. 3 is a view for explaining the relationship between the virtual projection surface 10 of the imaging device 4 shown in FIG. 1 and the head 6 and the shaft 5 of the golf club 3.
  • the projection plane 10 is a plane perpendicular to the optical axis of the imaging device 4.
  • the image pickup device 4 is attached to the shaft 5 via the attachment member 11. Is the shaft 5 of the portion to which the image pickup device 4 is attached less rigid than the head 6 and the portion of the shaft 5 near the head 6? There is virtually no risk.
  • the optical axis of the imaging device 4 and the shaft axis are parallel to each other, the shaft axis of the shaft 5 and the projection plane 10 are perpendicular to each other when no bending occurs.
  • the shaft axis and the projection surface 10 are not perpendicular.
  • Positional coordinates of the markers M1 to M3 on the head 6 in the projection plane 10 are represented by pixel positions corresponding to coordinate values of the X axis and the Y axis described at the lower left in FIG.
  • the Z axis is an axis parallel to the optical axis of the imaging device 4.
  • the bends of the shafts 5a and 5b are shown exaggeratingly, and the actually occurring bends are often smaller than shown.
  • FIG. 4 is a graph showing an example of an image of a golf club during a golf swing acquired from the imaging device 4 shown in FIG.
  • the positions of the shaft 5 and the head 6 shown in the figure are the positions immediately before the impact at which the head 6 strikes the golf ball 9.
  • markers M1 to M3 which are identification features are attached.
  • there may be at least one identification feature and it is of course possible to arrange three markers as shown, or arrange a plurality of markers in different manners.
  • Markers M4 to M6 indicated by broken lines in the figure respectively correspond to the positions of the markers M1 to M3 at the start of the golf swing.
  • step S03 the position information acquiring unit of the measuring device 2 acquires the position information of each of the markers M1 to M3 as pixel coordinates with the lower left on the XY plane as the projection plane as the origin (0, 0).
  • the position information of each of the markers M1 to M3 on the projection plane 10 is the relative position of the head 6 with respect to the imaging device 4.
  • step S04 the measurement unit of the measurement device 2 can measure the curvature of the shaft 5 reflected in the relative position of the head 6 to the imaging device 4. Furthermore, by performing the same measurement using the golf club 3 having an arbitrary number of markers attached on the shaft 5, the aspect of the bending amount and the bending of the shaft 5 can be measured in more detail.
  • the measuring unit corresponds to a straight line connecting markers M4 and M5 (hereinafter referred to as M4-M5 line), which corresponds to the rotation behavior of the head 6 corresponding to the face direction of the head 6 at the beginning of the golf swing. It can be measured by calculating the angle formed by the straight line connecting M1 and M2 (hereinafter referred to as M1-M2 line). In this manner, the rotational behavior of the head 6 can be measured as a relative angle with respect to the face direction at the start of the golf swing of the head 6 at each point in time of the golf swing. Furthermore, it is considered that the twisting of the shaft can also be calculated using a predetermined model from the rotational behavior of the head.
  • the measuring unit of the measuring device 2 can also obtain time transition of position information on the projection plane 10 of each of the markers M1 to M3 acquired by the position information acquiring unit as shown in FIG.
  • FIG. 5 is a view showing the time transition of the positions of the markers M1 to M3 in the X-axis direction on the projection plane 10 of the imaging device 4.
  • the horizontal axis indicates time (ms)
  • the vertical axis indicates the position (pixels) of each marker in the X-axis direction on the projection plane 10 of the imaging device.
  • the point in time (ms) is 0 is an impact point at which the head 6 strikes the golf ball 9.
  • the markers M1 to M3 of the head 6 shift the position in the projection plane X axis direction to the left and right with a similar tendency toward the impact time point. More specifically, the markers M1 to M3 of the head 6 move leftward on the projection surface 10 in the X-axis direction immediately after the start of the golf swing, and then gradually move to the X-axis right on the projection surface 10 gradually. It moves in the direction, and moves to the left of the X axis on the projection surface 10 just before the impact, and reaches the point of impact.
  • FIG. 6 is a diagram showing the time transition of the position of each of the markers M1 to M3 in the Y-axis direction on the projection plane of the imaging device 4.
  • the horizontal axis indicates time (ms)
  • the vertical axis indicates the position (pixels) of each marker in the Y-axis direction on the projection plane 10 of the imaging device.
  • the point in time (ms) is 0 is an impact point at which the head 6 strikes the golf ball 9. From this figure, it can be seen that the markers M1 to M3 of the head 6 vertically shift the position in the projection plane Y-axis direction with a similar tendency toward the point of impact.
  • the markers M1 to M3 of the head 6 swing up and down in the Y-axis direction on the projection surface 10 immediately after the start of the golf swing, then move rapidly in the Y-axis direction, and then halfway After dropping gently to the bottom, it drops sharply toward the impact.
  • the present embodiment it is possible to measure the deformation of the golf club 3 reflected in the movement of the head 6. Furthermore, according to the present embodiment, it is also possible to obtain information of the locus on the projection surface 10 of the marker M1 on the head 6 in the golf swing as shown in FIG.
  • the diamond marks shown on the plot of FIG. 7 indicate the impact.
  • the locus of the marker M1 on the projection surface 10 of the imaging device 4 indicates how much the head 6 is displaced relative to the imaging device 4.
  • the factor that contributes the most to the relative displacement of the head 6 with respect to the imaging device 4 is considered to be the tendency of the shaft 5 among the deformation of the golf club 3. Therefore, from the locus of the marker M1 as shown in FIG. 7, the bending of the shaft 5 at the time of golf swing can be measured.
  • the rotational behavior of the head can be measured as shown in FIG.
  • This rotational behavior includes, for example, rotation in the toe-down direction, which is the direction in which the head 6 moves away from the shaft axis, and rotation in the striking direction about the shaft.
  • the vertical axis represents relative angle
  • the horizontal axis represents time (ms).
  • the relative angles are the M1-M2 line and the M1-M3 line in the golf swing with respect to the M4-M5 line corresponding to the M1-M2 line at the start of the golf swing and the M4-M6 line corresponding to the M1-M3 line. Indicates the angle that each line makes. The plus indicates the rotation angle in the launch direction, and the minus indicates the rotation angle in the opposite direction.
  • the solid line represents the time transition of the angle formed by the M1-M2 line of the head 6 with the M4-M5 line.
  • the broken line shows the time transition of the angle that the M1-M3 line makes with the M4-M6 line.
  • the change of the solid line is larger than the change of the broken line. This is considered to be due to bending of the shaft 5 as the head 6 moves in a so-called toe-down direction (direction in which the head 6 moves away from the shaft axis) during a golf swing.
  • the method according to the present embodiment does not need to use a plurality of imaging devices to measure the deformation of the golf club by the golfer 8, and can easily measure the movement of the head 6 during the golf swing. .
  • FIG.5, FIG.6, FIG.8 although the data regarding the motion of the head at the time of a golf swing and bending of a shaft were shown as time-lapse data, these can be acquired only as time-lapse data Absent. For example, it is also possible to obtain each data at any one time point of interest, such as at the time of impact.
  • the deformation of the golf club 3 can be determined, for example, as a displacement from the state of the golf club 3 in a state where no deformation has occurred.
  • FIGS. 9A to 9C show trajectories on the projection surface 10 of the marker M1 on the head 6 at the time of golf swing, as in FIG. Similar to FIG. 8, the measurement results shown in FIGS. 10A to 10C show the temporal transition of the relative angle of the head 6 at the time of the golf swing with respect to the initial position of the head 6.
  • the phase of the golf swing is divided into a backswing (solid line), a downswing (broken line), and a follow through (dotted line).
  • an imaging device for imaging the entire golf swing by the golfer 8 separately from the imaging device 4 or by providing the golf club 3 with a gyro sensor, it is possible to distinguish the phase of the golf swing. As described above, by distinguishing the phases of the golf swing, it becomes possible to compare and evaluate the measurement results of different types of golf swings for each phase.
  • the measurement results of each subject are different from each other. Therefore, it is considered that selection and development of a golf club suitable for each subject can be supported by determining the feature amount to be compared and the feature amount to be an index, and comparing and classifying the measurement results.
  • the golfer 8 is shown as a human, but according to the present invention, it is also possible to easily measure the deformation of the golf club at the time of the golf swing by the golfer of the robot.
  • the robot's golfer can swing under certain conditions, and can easily determine, for example, the homogeneity of the characteristics among many products of the same specification.

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Abstract

L'invention porte sur un système de mesure de déformation de club de golf, avec lequel système il est possible de mesurer facilement une déformation de club de golf pour un élan de golf normal du joueur de golf. Un système de mesure (1) selon la présente invention comprend : un dispositif de capture d'image (4) qui est attaché à un club de golf (3) vers une direction qui comprend au moins un élément d'identification qui est attaché au club de golf (3), dont l'emplacement sur le club de golf (3) peut être identifié ; et un dispositif de mesure (2) qui mesure la déformation du club de golf sur la base de l'information d'emplacement d'au moins l'un des éléments d'identification qui sont acquis à partir d'une image de l'élan du club de golf qui est capturée par le dispositif de capture d'image (4).
PCT/JP2012/006399 2011-10-04 2012-10-04 Système de mesure de déformation de club de golf, procédé de mesure et dispositif de mesure WO2013051277A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2013537423A JP6078470B2 (ja) 2011-10-04 2012-10-04 ゴルフクラブの変形の計測システム、計測方法及び計測装置
CN201280049090.2A CN103857445B (zh) 2011-10-04 2012-10-04 高尔夫球杆的变形的测量系统、测量方法和测量装置
US14/349,012 US20150038249A1 (en) 2011-10-04 2012-10-04 System, method, and apparatus for measuring golf club deformation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-220516 2011-10-04
JP2011220516 2011-10-04

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Publication Number Publication Date
WO2013051277A1 true WO2013051277A1 (fr) 2013-04-11

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US (1) US20150038249A1 (fr)
JP (1) JP6078470B2 (fr)
CN (1) CN103857445B (fr)
WO (1) WO2013051277A1 (fr)

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CN104107534A (zh) * 2013-04-16 2014-10-22 阿库施耐特公司 用于高尔夫球杆的改进的匹配系统
WO2016114126A1 (fr) * 2015-01-15 2016-07-21 セイコーエプソン株式会社 Dispositif de détection, système de détection, système d'analyse de mouvement, support d'enregistrement, et procédé d'analyse
WO2023181828A1 (fr) * 2022-03-23 2023-09-28 株式会社村田製作所 Circuit de calcul et programme de calcul

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US9533202B2 (en) * 2013-07-15 2017-01-03 Taylor Made Golf Company, Inc. Golf club head with permanent performance indicating indicia
CN105288982B (zh) * 2014-07-23 2018-02-23 黄详龙 高尔夫球的运动状态测定装置
JP2016036680A (ja) * 2014-08-11 2016-03-22 セイコーエプソン株式会社 撮影制御方法、撮影制御装置、撮影制御システム及びプログラム
JP2016036681A (ja) * 2014-08-11 2016-03-22 セイコーエプソン株式会社 運動解析方法、運動解析装置、運動解析システム及びプログラム
CN113694620B (zh) * 2015-08-17 2022-09-16 帕克-汉尼芬公司 过滤介质包、制造方法及过滤介质压机
CN105509650B (zh) * 2016-01-08 2017-11-14 中铁第四勘察设计院集团有限公司 铁路双连杆梁端伸缩装置的变形监测装置及方法
US11504588B2 (en) 2018-06-06 2022-11-22 Taylor Made Golf Company, Inc. Rusty oxidizable metal face golf club head
JP7231656B2 (ja) 2018-06-12 2023-03-01 カーステン マニュファクチュアリング コーポレーション コンピュータビジョンを使用して３ｄ特性を測定するためのシステム及び方法
CN108721866A (zh) * 2018-08-18 2018-11-02 中山市迈进高尔夫用品有限公司 一种用于校正高尔夫球杆的对准的系统及方法

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US20150038249A1 (en) 2015-02-05

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