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WO2000073735A1 - Procede et arrangement pour la mesure d'une distance de saut - Google Patents

Procede et arrangement pour la mesure d'une distance de saut Download PDF

Info

Publication number
WO2000073735A1
WO2000073735A1 PCT/FI2000/000474 FI0000474W WO0073735A1 WO 2000073735 A1 WO2000073735 A1 WO 2000073735A1 FI 0000474 W FI0000474 W FI 0000474W WO 0073735 A1 WO0073735 A1 WO 0073735A1
Authority
WO
WIPO (PCT)
Prior art keywords
jumping
jump
distance
measuring
starting line
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/FI2000/000474
Other languages
English (en)
Inventor
Jukka Tuusinen
Jouko Viitanen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Priority claimed from FI991210A external-priority patent/FI991210A0/fi
Priority claimed from FI20000364A external-priority patent/FI20000364A7/fi
Application filed by Individual filed Critical Individual
Priority to AU47608/00A priority Critical patent/AU4760800A/en
Priority to EP00929585A priority patent/EP1194733A1/fr
Publication of WO2000073735A1 publication Critical patent/WO2000073735A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A63B71/0605—Decision makers and devices using detection means facilitating arbitration
    • 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
    • A63B2220/806—Video cameras
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2244/00—Sports without balls
    • A63B2244/08—Jumping, vaulting
    • A63B2244/082—Long jumping
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2244/00—Sports without balls
    • A63B2244/08—Jumping, vaulting
    • A63B2244/082—Long jumping
    • A63B2244/084—Triple jump

Definitions

  • the invention relates to a method and arrangement for measuring the jumping distance especially in long jump and triple lump, m which the competitor jumps from a fixed starting line onto the jumping ground that is formed by a clearly defined area of sand etc., and m which the jumping distance is determined by the distance between the edge of the trace left by the jumper's landing that is closest to the starting line and by the starting line.
  • the object of this invention is to achieve a new method and arrangement for measuring a jumping distance especially in long jump and triple jump.
  • the characteristic features of the method according to the invention are presented m the accompanying patent claim 1 and the characteristic features of the arrangement intended to implement it are presented in patent claim 10.
  • Fig. 1 presents the jumping area seen from the side, especially m the direction of the jumping ground, perpendicularly m relation to the jumping direction.
  • Fig. 2 presents from above the traces left by the landing.
  • Fig. 3 presents the filming area of the camera.
  • Fig. 4 presents the arrangement according to the invention as a whole.
  • the measuring arrangement for jumps in the longitudinal direction based on a machine vision, consists of the following parts (fig. 4) :
  • the cameras are cameras intended to be used for measuring within the industry, the mechanical structure of which is strong and the attachments of which make it possible for the direction of the camera to stay unchanged despite the effects the wind or small knocks. Furthermore, in this case the synchronising of the camera at the time of measuring has been effected by so-called asynchronous resetting, which enables the reliable and correctly timed reading of the picture data of the camera into the computer.
  • a PC computer 18 inside which there is a card that performs an A/D transformation on the picture that comes in from the video camera. With the help of this card, the video picture is transformed into numerical form.
  • the computer naturally includes a screen 18.2 for the monitoring of the pictures and a pointing device, for example a mouse 18.1, to enable graphic pointing directly in the picture.
  • a flash device 16 which has been fixed so that its light comes, when directed, from close to the direction of jumping board 10.
  • the effect of the flash is 1200 joules, whereby during a very short time of exposure (1/10000 s) its light intensity on the jumping ground clearly exceeds the intensity of sunlight.
  • the opening of the camera and the time of exposure have been set so that a picture taken without the flash is almost black in full sunlight.
  • the functional principle of the measuring device is as follows. Immediately before the performance of each competitor, the apparatus takes a picture of the jumping ground 20 with flash lighting and stores the picture into the memory of the computer 18. Another picture of the jumping ground is taken after the jumping performance.
  • Jumping board 10 includes some more precisely defined jumping line, which forms a stable measuring point when measuring jumps.
  • Figure 1 is in the direction of the surface of the jumping ground, perpendicularly in relation to the jumping direction.
  • Figure 2 is from the top, the black areas are seen as shadow areas in the flash lighting.
  • the monitor of the computer shows a picture taken after the jump, which shows the place of landing.
  • the computer has drawn the borders of the areas left in the shade on the basis of the difference between the two above mentioned pictures and the place of the point of measuring that is automatically determined in the above mentioned way. If the user now considers that the computer has drawn the point of measuring in the correct place, he will accept the result. In case he, on the other hand, considers that there is something extra in the picture closer to the board, he can with the help of the mouse move the cursor on the picture onto the spot that he considers to be correct.
  • the cursor is drawn in such a way that the distortion of the perspective in the view of the camera is corrected, i.e. that there is no risk that he will chose a place that would not be closest to the board due to the perspective. Based on the place of the cursor, the computer will calculate the corrected result.
  • the cursor choice can also be taken from a picture taken without the flash and wholly independently without form recognition.
  • the resolution of the camera i.e. the number of separate picture points.
  • the camera is directed in such a way that its horizontal direction becomes equal to the direction of the jump so that the horizontal resolution of the camera is of essential importance.
  • this resolution is 768 picture points.
  • the maximum inaccuracy would be ⁇ picture points, but other factors exist in addition to this.
  • the camera In addition to the errors mentioned above, the camera must have its own place in relation to the board and the level of the jumping ground at each place of measuring, in order for the measurements to be accurate.
  • the camera has been fixed so as to watch the jumping ground from an oblique angle so that there is a great perspective distortion in the view the size of which depends on the position of the camera.
  • the position of the camera and its place in relation to the board are calibrated separately in each place of measuring. Special calibrating markings are here used, which are set onto places of the area of sight the positions of which are fixed by hand with the help of a steel measure (both the distance from the board and the perpendicularity to the board with a cross-measure cr a square) .
  • the above mentioned markings are filmed with the camera and with the help of these the computer programme will calculate the place of the camera and the turning angle in relation to the jumping ground and will set the distance of the picture field to the board. Taking advantage of the measurements, a perspective correction is made to each measuring picture on the basis of known matrix equations. The programme also notifies the user of the maximum mistake that can have been made whilst using the calibrating markings. The user will only accept the calibration when the calibrating error is less than 0,2 millimetres. A partial pixel technique can be used in the calibration process, i.e. the error is much less that one picture point (pixel) .
  • the drawing ability of the camera-objective combination The drawing ability must be adequate in such a way that the camera is able to separate details as small as of the size of a pixel.
  • the drawing ability at the point of 50% of MTF is notified to the chosen objective as at least 100 pairs of lines/mm.
  • Such a camera is chosen that the size of its picture points in the horizontal direction is 0,0116 mm, whereby the drawing ability sufficient for it would be as weak as 50 pairs of lines/mm.
  • the filmed area is of the form of a parallelogram, figure 3.
  • the area covered by one picture point is at its largest at the outmost edge of the filmed area.
  • the filmed area is chosen in such a way that it is 2,8 m at the outmost edge and 1,76 m (the width of the jumping ground is 3 m) at the nearest edge for one camera.
  • the area is thus as presented in the following figure. In the typical situation, a greater area need be covered in the measuring of a jump, whereby two cameras 17 and 17' are used (the sight area of the possible other camera indicated with a broken line) .
  • the accuracy of the measurements is different closer to the camera than farther away from it. Farthest away one pixel covers 3,65 mm, i.e. the measuring accuracy with an ideal system would be ⁇ 1,83 mm and correspondingly closest to the camera ⁇ 1,15.
  • the inaccuracy is less than ⁇ 2,8 mm.
  • the system seen from the top is shown in figure 4.
  • the board 10, the flash light 16, the camera 17 fixed onto the jumping area and the computer 18 (PC) are presented in the figure.
  • the computer 18 controls the camera 17 and the flash light 16.
  • the computer 18 includes a pointing device, here a mouse 18.1 in order to move the cursor 19 visible on the screen.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

L'invention concerne un procédé et un arrangement permettant de mesurer une distance de saut, particulièrement pour le saut en longueur et le triple saut : l'athlète prend appel depuis la limite fixe d'une planche d'appel (10) et retombe dans la fosse de réception (20), clairement définie par une zone de sable ou autre matériau. La distance de saut est comprise entre la bordure (14) de la trace de réception, dans la fosse, qui est la plus proche de la limite de la planche d'appel (10). Au moins une partie essentielle de la fosse (20) est filmée par une caméra vidéo (17), après le saut. L'image vidéo permet alors de déterminer la position de la bordure (14) de trace de réception considérée sur une échelle de mesure, en vision artificielle, sachant que l'échelle de mesure a été étalonnée à l'avance par rapport à la limite de la planche d'appel (10).
PCT/FI2000/000474 1999-05-28 2000-05-26 Procede et arrangement pour la mesure d'une distance de saut Ceased WO2000073735A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU47608/00A AU4760800A (en) 1999-05-28 2000-05-26 Method and arrangement for measuring a jumping distance
EP00929585A EP1194733A1 (fr) 1999-05-28 2000-05-26 Procede et arrangement pour la mesure d'une distance de saut

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FI991210 1999-05-28
FI991210A FI991210A0 (fi) 1999-05-28 1999-05-28 Mittalaite
FI20000364A FI20000364A7 (fi) 2000-02-18 2000-02-18 Pituushypyn mittausjärjestelmä
FI20000364 2000-02-18

Publications (1)

Publication Number Publication Date
WO2000073735A1 true WO2000073735A1 (fr) 2000-12-07

Family

ID=26160744

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2000/000474 Ceased WO2000073735A1 (fr) 1999-05-28 2000-05-26 Procede et arrangement pour la mesure d'une distance de saut

Country Status (3)

Country Link
EP (1) EP1194733A1 (fr)
AU (1) AU4760800A (fr)
WO (1) WO2000073735A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7236257B2 (en) * 2004-02-28 2007-06-26 Rubach James E Jump takeoff position indicator system
CN103263765A (zh) * 2013-05-12 2013-08-28 安徽工程大学 跳远踏板犯规自动判定系统
CN103357139A (zh) * 2013-06-25 2013-10-23 山东华宇职业技术学院 跳远运动员精确训练装置
CN108801140A (zh) * 2018-06-20 2018-11-13 广东工业大学 一种移门跳动量检测装置和方法
CN111860107A (zh) * 2020-05-28 2020-10-30 四川中科凯泽科技有限公司 一种基于深度学习姿态估计的立定跳远评估方法
CN114432685A (zh) * 2022-01-19 2022-05-06 北京女娲补天科技信息技术有限公司 一种立定跳远测试方法和装置
CN114712769A (zh) * 2022-03-29 2022-07-08 延边大学 基于计算机视觉的立定跳远智能测距方法及系统
CN115845350A (zh) * 2023-03-02 2023-03-28 成都谷帝科技有限公司 一种用于立定跳远自动测距的方法及系统
CN117258266A (zh) * 2023-09-25 2023-12-22 深圳市菲普莱体育发展有限公司 实现自动测量跳远的方法、系统、存储介质及设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116392800B (zh) * 2023-04-23 2024-07-02 电子科技大学 一种基于目标检测和图像处理的立定跳远测距方法及系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1400225A (en) * 1971-12-03 1975-07-16 Villamos Berendezes Es Keszule Apparatus for automatically determining and indicating competition results eypressable as a length
DE4030507A1 (de) * 1990-09-27 1992-04-02 Albert Stichhan Verfahren und vorrichtungen zur ermittlung von genauen messwerten bei sportlichen uebungen
DE4141397A1 (de) * 1991-12-16 1993-06-17 Augustin Imhof Verfahren zum messen von sprungweiten im skisport

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1400225A (en) * 1971-12-03 1975-07-16 Villamos Berendezes Es Keszule Apparatus for automatically determining and indicating competition results eypressable as a length
DE4030507A1 (de) * 1990-09-27 1992-04-02 Albert Stichhan Verfahren und vorrichtungen zur ermittlung von genauen messwerten bei sportlichen uebungen
DE4141397A1 (de) * 1991-12-16 1993-06-17 Augustin Imhof Verfahren zum messen von sprungweiten im skisport

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7236257B2 (en) * 2004-02-28 2007-06-26 Rubach James E Jump takeoff position indicator system
CN103263765A (zh) * 2013-05-12 2013-08-28 安徽工程大学 跳远踏板犯规自动判定系统
CN103357139A (zh) * 2013-06-25 2013-10-23 山东华宇职业技术学院 跳远运动员精确训练装置
CN108801140A (zh) * 2018-06-20 2018-11-13 广东工业大学 一种移门跳动量检测装置和方法
CN108801140B (zh) * 2018-06-20 2021-03-16 广东工业大学 一种移门跳动量检测装置和方法
CN111860107A (zh) * 2020-05-28 2020-10-30 四川中科凯泽科技有限公司 一种基于深度学习姿态估计的立定跳远评估方法
CN114432685A (zh) * 2022-01-19 2022-05-06 北京女娲补天科技信息技术有限公司 一种立定跳远测试方法和装置
CN114712769A (zh) * 2022-03-29 2022-07-08 延边大学 基于计算机视觉的立定跳远智能测距方法及系统
CN115845350A (zh) * 2023-03-02 2023-03-28 成都谷帝科技有限公司 一种用于立定跳远自动测距的方法及系统
CN117258266A (zh) * 2023-09-25 2023-12-22 深圳市菲普莱体育发展有限公司 实现自动测量跳远的方法、系统、存储介质及设备

Also Published As

Publication number Publication date
EP1194733A1 (fr) 2002-04-10
AU4760800A (en) 2000-12-18

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