Mark for club head measurement and image processing device

Pending Publication Date: 2022-07-21
AMPLUS CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a solution for measuring the motion and velocity of a golfer's swing to select the best golf club. The invention provides a mark on the club head with two patterns that have different lightness levels. This allows for accurate information to be obtained about the state of the club head. Overall, the invention improves the accuracy of measuring the golfer's swing and selecting the appropriate golf club.

Problems solved by technology

However, when a club head in motion is simply photographed from above, for example, as in Japanese Patent Application Laid-open No. 2018-61729, it is difficult to detect the position or the face of the club head from the photographic image with high accuracy, and it is difficult to obtain information about a state of the club head, such as the velocity of the club head or the motion of the face, with high accuracy.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mark for club head measurement and image processing device
  • Mark for club head measurement and image processing device
  • Mark for club head measurement and image processing device

Examples

Experimental program
Comparison scheme
Effect test

example

[0097]Examples and comparative examples of the doughnut-shaped marks M1 and M2 of the foregoing embodiment are listed in Table 1 below. Note that the present invention is not limited to these examples. Table 1 shows the measurement results of the maximum brightness value, the minimum brightness value, and the difference between the maximum brightness value and the minimum brightness value of five kinds of black sheets BL1 to BL5 used as a material for the central portion of the doughnut-shaped mark, and the detection accuracy indicated by “high” and “low” obtained when each of the black sheets BL1 to BL5 was used as the central portion of the doughnut-shaped mark. FIG. 13 illustrates a photographic image obtained by taking a photograph of five kinds of black sheets BL1 to BL5. Table 2 shows the photography conditions and the illumination conditions of five kinds of black sheets BL1 to BL5.

[0098]As illustrated in Table 1 and FIG. 13, as for Example 1 (BL4) and Example 2 (BL5), the ma...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A mark for club head measurement in use for measuring information about a state of a club head of a golf club and provided on the golf club includes a central portion formed with a pattern having a lightness lower than the periphery thereof and a peripheral portion formed with a pattern surrounding the periphery of the central portion and having a lightness higher than the central portion.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application claims priority under 35 U.S.C. § 119 to Japanese Patent Application No. 2021-007703, filed on Jan. 21, 2021. The above applications are hereby expressly incorporated by reference, in their entireties, into the present application.BACKGROUND OF THE INVENTION1. Field of the Invention[0002]The present invention is related to a mark for club head measurement in use for measuring information about a state of a club head of a golf club and an image processing device that detects the mark for club head measurement from a photographic image thereof.2. Description of the Related Art[0003]Conventionally, a variety of devices that take photos of a golfer's swing and provide photographic information thereof have been proposed. The photographic information of the swing is provided to the golfer to encourage the golfer to improve golfing or encourage the golfer to select a golf club suitable for the golfer.[0004]As an example o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A63B60/42A63B53/04A63B71/06A63B24/00
CPCA63B60/42A63B53/04A63B71/0622A63B2225/74A63B2220/05A63B2220/807A63B2071/0647A63B24/0003G06T7/20G06T2207/30208G06T2207/30221G06T2207/30241G06V10/62G06V10/44G06V10/25G06V10/255
InventorKURACHI, NOBUHISAKARASAWA, KAZUSHIGESAITO, DAISUKE
OwnerAMPLUS CO LTD