Measurement of three-dimensional orientation of golf club head with one camera

Golfers' swings vary with each individual and golf club manufacturers provide the service called “Fitting”, to select an appropriate golf club for each swing, to an each golfer. In order to find the appropriate golf club for each golfer, it is necessary to measure the position and orientati...

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Autores principales:	Wataru KIMIZUKA, Masahide ONUKI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	measurement orientation golf club image processing accuracy newton-raphson method Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/55fe97c7694d4e6aa74b7a6830301b3f
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spelling	oai:doaj.org-article:55fe97c7694d4e6aa74b7a6830301b3f2021-11-26T06:40:17ZMeasurement of three-dimensional orientation of golf club head with one camera2187-974510.1299/mej.15-00245https://doaj.org/article/55fe97c7694d4e6aa74b7a6830301b3f2016-04-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/2/3_15-00245/_pdf/-char/enhttps://doaj.org/toc/2187-9745Golfers' swings vary with each individual and golf club manufacturers provide the service called “Fitting”, to select an appropriate golf club for each swing, to an each golfer. In order to find the appropriate golf club for each golfer, it is necessary to measure the position and orientation of a golf club head. It can be supposed that the measurement error needs to be less than 0.5 degree. There is an existing method whereby the three-dimensional (3D) orientation of a golf club head is measured from the 3D positions of points on the golf club head. This method is generally used in the area of motion analysis, and has problems in that the system has many restrictions in its installation, large installation space is required, and costs are incurred to the future expansion of the fitting service to many locations, as two or more cameras are needed. The “Fitting” service requires a method that needs small space, low cost and little calculation time. Therefore, A method was developed, whereby the 3D orientation of a golf club head was calculated based on one image from just one camera using the Newton-Raphson method, which needs little calculation time, and the measurement accuracy was validated compared with the experimental results. It was proved that the developed method is useful to a golf club fitting service because the measurement error is less than 0.5 degree of our target even when various golfers' swings are measured, whereby markers are attached possibly near the outline of the head in the case of the farthest distance between markers from 80 to 95 mm, and then the coordinates of the marker center are identified by calculation from luminance and coordinates of each pixel in an area surrounding the marker.Wataru KIMIZUKAMasahide ONUKIThe Japan Society of Mechanical Engineersarticlemeasurementorientationgolf clubimage processingaccuracynewton-raphson methodMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 2, Pp 15-00245-15-00245 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	measurement orientation golf club image processing accuracy newton-raphson method Mechanical engineering and machinery TJ1-1570
spellingShingle	measurement orientation golf club image processing accuracy newton-raphson method Mechanical engineering and machinery TJ1-1570 Wataru KIMIZUKA Masahide ONUKI Measurement of three-dimensional orientation of golf club head with one camera
description	Golfers' swings vary with each individual and golf club manufacturers provide the service called “Fitting”, to select an appropriate golf club for each swing, to an each golfer. In order to find the appropriate golf club for each golfer, it is necessary to measure the position and orientation of a golf club head. It can be supposed that the measurement error needs to be less than 0.5 degree. There is an existing method whereby the three-dimensional (3D) orientation of a golf club head is measured from the 3D positions of points on the golf club head. This method is generally used in the area of motion analysis, and has problems in that the system has many restrictions in its installation, large installation space is required, and costs are incurred to the future expansion of the fitting service to many locations, as two or more cameras are needed. The “Fitting” service requires a method that needs small space, low cost and little calculation time. Therefore, A method was developed, whereby the 3D orientation of a golf club head was calculated based on one image from just one camera using the Newton-Raphson method, which needs little calculation time, and the measurement accuracy was validated compared with the experimental results. It was proved that the developed method is useful to a golf club fitting service because the measurement error is less than 0.5 degree of our target even when various golfers' swings are measured, whereby markers are attached possibly near the outline of the head in the case of the farthest distance between markers from 80 to 95 mm, and then the coordinates of the marker center are identified by calculation from luminance and coordinates of each pixel in an area surrounding the marker.
format	article
author	Wataru KIMIZUKA Masahide ONUKI
author_facet	Wataru KIMIZUKA Masahide ONUKI
author_sort	Wataru KIMIZUKA
title	Measurement of three-dimensional orientation of golf club head with one camera
title_short	Measurement of three-dimensional orientation of golf club head with one camera
title_full	Measurement of three-dimensional orientation of golf club head with one camera
title_fullStr	Measurement of three-dimensional orientation of golf club head with one camera
title_full_unstemmed	Measurement of three-dimensional orientation of golf club head with one camera
title_sort	measurement of three-dimensional orientation of golf club head with one camera
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/55fe97c7694d4e6aa74b7a6830301b3f
work_keys_str_mv	AT watarukimizuka measurementofthreedimensionalorientationofgolfclubheadwithonecamera AT masahideonuki measurementofthreedimensionalorientationofgolfclubheadwithonecamera
_version_	1718409717965914112

Measurement of three-dimensional orientation of golf club head with one camera

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