EP3982337B1 - Verfahren und system zur verbesserten messung der durchlaufzeit über eine zeitmesslinie - Google Patents

Verfahren und system zur verbesserten messung der durchlaufzeit über eine zeitmesslinie Download PDF

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Publication number
EP3982337B1
EP3982337B1 EP20201010.4A EP20201010A EP3982337B1 EP 3982337 B1 EP3982337 B1 EP 3982337B1 EP 20201010 A EP20201010 A EP 20201010A EP 3982337 B1 EP3982337 B1 EP 3982337B1
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EP
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Prior art keywords
passage
line
pixels
sensor
time
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EP20201010.4A
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English (en)
French (fr)
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EP3982337A1 (de
Inventor
M. Pascal RICHARD
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Swiss Timing Ltd
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Swiss Timing Ltd
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Priority to EP20201010.4A priority Critical patent/EP3982337B1/de
Priority to US17/408,706 priority patent/US20220111285A1/en
Publication of EP3982337A1 publication Critical patent/EP3982337A1/de
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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
    • A63B71/0686—Timers, rhythm indicators or pacing apparatus using electric or electronic means
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
    • G07C1/22—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people in connection with sports or games
    • G07C1/24—Race time-recorders
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F10/00—Apparatus for measuring unknown time intervals by electric means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F8/00—Apparatus for measuring unknown time intervals by electromechanical means
    • G04F8/08—Means used apart from the time-piece for starting or stopping same

Definitions

  • the invention relates to a method for improved measurement of the passage time on a timing line of a race by a competitor, in particular of a sporting discipline.
  • the invention also relates to a system for improved measurement of the passage time on a timing line of a race by a competitor, in particular of a sporting discipline, for the implementation of the method.
  • a running sport competition such as a sprint race in athletics, cycling, cross-country skiing, speed skating, a bobsleigh race, or during a horse racing event
  • sensors to measure the intermediate or final time of competitors, in particular to classify competitors.
  • the requirements are different depending on the sport. For example, in an athletics sprint race, the moment is defined as soon as part of the athlete's torso crosses the finish line. For a speed skating or cross-country ski race, the moment is defined when the skate or foot reaches the finish line.
  • a sensor is placed near the finish line to measure the passage time of competitors.
  • a photoelectric cell is used as a receiver and a pulsed infrared light transmitter, the transmitter and the receiver being arranged on either side. on the other, in the axis of the finish line.
  • the receiver no longer receives the pulsed light, which makes it possible to deduce their passage time.
  • devices comprising the transmitter and the receiver in the same box, to have a single system placed at one end of the line.
  • a reflector for example a reflector, is arranged at the other end of the finish line to reflect the infrared light from the transmitter towards the receiver.
  • the document EP 0 898 249 describes an example of a method and system for measuring the passage time of competitors on a timing line.
  • the invention therefore aims to overcome the disadvantages of the aforementioned state of the art by proposing a method for improved measurement of the passage time on a timing line of a race by a competitor, in particular of a sporting discipline, which avoids measuring spurious passage times caused by objects or people other than runners.
  • the additional information on the movement or dimensions of the detected object makes it possible to verify that it is indeed a competitor passing the timing line, and not a parasitic object. or a person who passes in front of the sensor by mistake.
  • Another advantage of the invention is that this makes it possible to use a system arranged on one side of the timing line, without having to resort to another device on the other side of the line.
  • the method comprises a step of transmitting the measured passage time to a display unit.
  • the senor being provided with a matrix of pixels, the sensor is configured to detect variations in optical signals received by at least part of the pixels of the matrix to produce the electrical signals.
  • the additional information is the direction of movement of the object.
  • the direction of movement on the columns of pixels is detected thanks to the modification of the pixels before and/or after the column of pixels of the timing line.
  • the additional information is the speed of movement of the object.
  • the additional information is the height of the object.
  • the additional information is the width of the object.
  • the additional information is a detection zone where the object is expected.
  • the detection is carried out by analyzing the variation of the electrical signals.
  • the pixels of the image sensor detect the optical signals independently of each other.
  • the entire sensor is used during each step of the process.
  • the system comprises a unit for displaying the measured times.
  • the senor is configured to continuously detect variations in at least part of the pixels of the matrix.
  • the system comprises a camera provided with the sensor, preferably the camera is of the neuro-morphic type.
  • the image processing unit comprises an artificial intelligence module.
  • the method is intended to allow improved measurement of the passage time on a timing line of a race by a competitor, in particular for a sporting discipline.
  • the method described below relates for example to an athletics race, cross-country skiing, speed skating, cycling, bobsleigh or a horse race.
  • the method is implemented by a shooting system comprising at least one image sensor.
  • the sensor is provided with a matrix of pixels forming an image capture surface.
  • the sensor is configured to detect variations in optical signals received by at least a portion of the pixels of the matrix to produce the electrical signals.
  • the method 10 according to the invention is a method for improved measurement of the passage time on a timing line of a race by a competitor, in particular of a sporting discipline.
  • the method comprises a first step 1 consisting of acquiring electrical signals representative of the image of the timing line captured by the image sensor.
  • the sensor is provided with a matrix of pixels.
  • the sensor is configured to detect variations in optical signals received by at least a portion of the pixels of the matrix to produce the electrical signals. Electrical signals are produced based on optical signals received by the sensor pixels.
  • the method consists of transmitting the electrical signals to an image processing unit.
  • the image processing unit detects the passage of the timing line by an object.
  • the image processing unit detects an object passing the timing line, using the variation in intensity of the electrical signals transmitted by the pixels of the sensor, the electrical signals representing the variation of the optical signals received by the pixels.
  • the timing line is for example defined by one or more columns of pixels. Thus, when the pixels of this or these columns vary in intensity, the image processing unit detects the passage of an object.
  • the fourth step 4 which is preferably carried out simultaneously with the third step, consists of detecting at least one additional piece of information concerning the movement or the dimensions of the object to verify that the object corresponds to a competitor.
  • additional information are mentioned below. These examples can of course be combined together to detect multiple additional pieces of information at the same time.
  • the additional information is the direction of movement of the object.
  • variations in the intensity of the pixels before and/or after the column(s) of pixels of the timing line are detected.
  • This embodiment is for example useful in the case of cycling races whose finish is in the mountains, and during which certain cyclists cross the finish line in the opposite direction to go back down to their vacation spot. Illustrations of this embodiment are described for figure 2 And 3 .
  • the additional information is the speed of movement of the object.
  • the processing unit calculates the speed of the object based on the speed of movement of the intensity variation detected by the sensor pixels. In other words, we follow the movement of a shape defined by the intensity or color of the sensor pixels.
  • the processing unit is then configured to estimate the speed of movement of the detected object. If the speed of the object does not does not correspond to an expected value interval, the image processing unit does not send an order to measure the time of passage of the object on the timing line.
  • the additional information is the height of the object.
  • the additional information is the width of the object.
  • the additional information is a detection zone where the object is expected.
  • the zone can for example be defined above or below a line defined on the sensor.
  • detection is concentrated on an area of the sensor defined by only part of the pixels.
  • the image processing unit is configured to be able to choose an area of the sensor on which objects can be detected. For example, during a cycling race, if we want to avoid taking a time measurement for a car that is lower than a competitor on a bike, we must define a height greater than a car to avoid transmitting the time measured from it.
  • An example of this embodiment is notably represented on the figures 2 And 4 .
  • the image processing unit transmits a timing order to a time measurement unit, to record the passage time of said object.
  • the image processing unit detects additional information corresponding to a competitor, it sends a detection signal to the measuring unit when the object passes the timing line.
  • the measuring unit records the time of passage of said object on the timing line corresponding to the instant of passage of the object.
  • the measuring unit is configured to time the passage of time and to record the time of each competitor, when he receives an order from the image processing unit.
  • the seventh step consists of transmitting the measured passage time to a display unit, to display the competitor's time and compare it to the times of other competitors, for example in a ranking based on the shortest time.
  • the display unit is for example a giant screen installed on a finish area or in front of a spectator stand.
  • FIG. 2 shows an illustration of the image that the sensor 9 of the camera receives.
  • One or more columns of pixels corresponding to a timing line are defined on the sensor.
  • a first object 11 passes the timing line in the correct direction and a second object 12 passes the timing line in the opposite direction.
  • the image processing unit gives a timing order for the first object passing the line in the right direction and not for the second object passing in the other direction. .
  • the image processing unit calculates the speed of progression of the first object to verify that it is a competitor who passes the timing line.
  • the position of the first object 11 is identified at several locations on the sensor, so that the image processing unit is able to deduce the speed of movement of the object.
  • the image processing unit transmits a measurement order to the timing time measurement unit. Conversely, if the speed does not belong to this interval, the image processing unit considers that it is not a competitor and does not transmit an order.
  • Two lines 14, 15 make it possible to define limits below and above which the detected objects are not considered as competitors according to the fourth embodiment of detection of additional information.
  • the first object 11 which passes between lines 14, 15 has its passage time measured, while the one passing outside lines 14, 15 is not timed.
  • the line layout is defined on the image sensor, and can be changed as desired to suit the type of stroke.
  • FIG. 3 shows a timing line 20 of the finish line type of a race.
  • a measuring system 23 comprises a camera 17 connected to an image processing unit 21.
  • the camera 17 is directed on the line 20 so that the optical axis of the camera is substantially directed towards this line.
  • 18 competitors cross line 20 in the right direction, while one person 19 crosses line 20 in the other direction.
  • This person 19 can be a competitor who has already passed line 20 or a referee who monitors the race. Thanks to the method according to the invention, the timed time of the person 19 passing in the opposite direction is not measured, because the image processing unit 21 detects that this person 19 is not moving in the appropriate direction.
  • a measuring system 23 arranged to time the timing line 20, which is of the finish line type. This is a cycling race in which 28 riders on bicycles cross the finish line, while 22 cars follow the 28 riders and 27 people can cross the line 20 on foot.
  • a height or width of the objects to be detected or by using the recognition of objects by the image processing unit 21 to detect the runners, we avoid timing the car 22, the cyclist 27 passing the line 20 in opposite direction and person 29 crossing the line on foot. Only 28 bike riders passing the line in the desired direction are timed.
  • the general silhouette of the detected object can be detected to verify that it is indeed a competitor on a bicycle 28.
  • FIG. 5 illustrates a measurement system 23 comprising an acquisition unit 31 comprising a camera 17 provided with an image sensor.
  • the image sensor includes an array of pixels.
  • the entire sensor is used for image processing.
  • the image acquisition frequency is preferably between 1000 Hz and 10000 Hz.
  • the camera 17 is of the neuro-morphic type, each pixel of the sensor detecting light signals independently of each other. others, the corresponding electrical signals being transmitted to an image processing unit 21.
  • the measuring system 23 comprises an image processing unit 21 and a timing unit 33 and a display unit 34.
  • the image processing unit 21 transmits a measurement order to the timing unit 33, which records the competitor's passage time.
  • the timing time can then be transmitted to the display unit 34 to display the competitor's time in a ranking against other competitors already registered.
  • the image processing unit 21 may include an artificial intelligence module making it possible to recognize an object passing the timing line, in order to determine whether it is a competitor or a parasitic object. .
  • the invention is not limited to the embodiments described with reference to the figures and variants could be considered without departing from the scope of the invention.
  • the values of the first and second image acquisition frequencies could be chosen with higher values if the evolution of the technical capabilities of the two types of camera allows it.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Closed-Circuit Television Systems (AREA)

Claims (17)

  1. Verfahren (10) zur verbesserten Messung der Durchgangszeit über eine Zeitmessungslinie (13, 20) einer Bahn durch einen Wettkämpfer, insbesondere für eine Sportdisziplin, wobei das Verfahren (10) von einem Messsystem (23) durchgeführt wird, das mindestens einen Bildsensor beinhaltet, wobei das Verfahren (10) die folgenden aufeinanderfolgenden Schritte umfasst:
    - Erlangen (1) elektrischer Signale, die repräsentativ sind für das Bild der Zeitmessungslinie (13, 20), das vom Bildsensor aufgenommen wird, wobei die elektrischen Signale in Abhängigkeit von optischen Signalen erzeugt werden, die vom Sensor empfangen werden,
    - Übertragen (2) der elektrischen Signale an eine Bildverarbeitungseinheit (21, 21),
    - Erfassen (3) des Durchgangs einer Zeitmessungslinie (13, 20) durch ein Objekt (11, 12),
    dadurch gekennzeichnet, dass es die folgenden aufeinanderfolgenden Schritte umfasst:
    - Erfassen (4) von mindestens einer zusätzlichen Information, die die Bewegung oder die Dimensionen des Objekts (11, 12) betrifft, um zu überprüfen, ob das Objekt (11) einem Wettkämpfer (18, 28) entspricht,
    - Übertragen (5) eines Zeitmessbefehls des Durchgangs an eine Messeinheit (33), wenn das Objekt (11) einem Wettkämpfer (18, 28) entspricht, und
    - Messen (6) der Durchgangszeit des Objekts (11) über die Zeitmessungslinie, die dem Zeitpunkt des Durchgangs des Objekts (11) entspricht.
  2. Verfahren (1) nach Anspruch 1, dadurch gekennzeichnet, dass es einen Schritt zum Übertragen (7) der gemessenen Durchgangszeit an eine Anzeigeeinheit (34) umfasst.
  3. Verfahren (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Sensor, der mit einer Pixelmatrix ausgestattet ist, der Sensor konfiguriert ist, um Abweichungen der optischen Signale zu erfassen, die von mindestens einem Teil der Pixel der Matrix empfangen werden, um die elektrischen Signale zu erzeugen.
  4. Verfahren (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die zusätzliche Information die Richtung der Bewegung des Objekts (11, 12) ist.
  5. Verfahren (1) nach Anspruch 4, dadurch gekennzeichnet, dass die Bewegungsrichtung auf den Pixelspalten mittels der Veränderung der Pixel vor und/oder nach der oder den Pixelspalten der Zeitmessungslinie erfasst wird.
  6. Verfahren (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die zusätzliche Information die Geschwindigkeit der Bewegung des Objekts (11, 12) ist.
  7. Verfahren (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die zusätzliche Information die Höhe des Objekts (11, 12) ist.
  8. Verfahren (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die zusätzliche Information die Breite des Objekts (11, 12) ist.
  9. Verfahren (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die zusätzliche Information ein Erfassungsbereich ist, in dem das Objekt (11, 12) erwartet wird.
  10. Verfahren (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Erfassung mittels einer Analyse der Abweichung der elektrischen Signale erfolgt.
  11. Verfahren (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Pixel des Bildsensors die optischen Signale unabhängig voneinander erfassen.
  12. Verfahren (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gesamtheit des Sensors bei jedem Verfahrensschritt verwendet wird.
  13. System (23, 23) zur verbesserten Messung der Durchgangszeit über eine Zeitmessungslinie (13, 20) einer Bahn durch einen Wettkämpfer (18, 28), insbesondere für eine Sportdisziplin, wobei das System dadurch gekennzeichnet ist, dass es umfasst:
    - Eine Erlangungseinheit (31) zum Erlangen elektrischer Signale, die repräsentativ sind für das Bild der Zeitmessungslinie, wobei die Erlangungseinheit (31) mindestens einen Bildsensor beinhaltet, der mit einer Pixelmatrix ausgestattet ist, wobei die elektrischen Signale in Abhängigkeit von optischen Signalen erzeugt werden, die von den Pixeln der Matrix empfangen werden,
    - eine Bildverarbeitungseinheit (21) zum Verarbeiten der elektrischen Signale, die von der Erlangungseinheit (31) übertragen werden, um den Durchgang der Zeitmessungslinie durch ein Objekt (11, 12) zu erfassen, und
    - eine Messeinheit (33) der Durchgangszeit des Objekts (11) über die Zeitmessungslinie, die dem Zeitpunkt des Durchgangs des Objekts (11) entspricht, wobei die Erlangungseinheit (11) konfiguriert ist, um die elektrischen Signale an die Bildverarbeitungseinheit (21) zu übertragen,
    dadurch gekennzeichnet, dass:
    - Die Verarbeitungseinheit konfiguriert ist, um mindestens eine zusätzliche Information zu erfassen, die die Bewegung oder die Dimensionen des Objekts betrifft, um zu überprüfen, ob das Objekt (11, 12) einem Wettkämpfer entspricht, und
    - die Erlangungseinheit (11) konfiguriert ist, um einen Zeitmessbefehl der Durchgangszeit an die Messeinheit (33) zu übertragen, wenn das Objekt (11) einem Wettkämpfer (18, 28) entspricht.
  14. System (23) nach Anspruch 13, dadurch gekennzeichnet, dass es eine Anzeigeeinheit (34) der gemessenen Zeiten umfasst.
  15. System (23) nach Anspruch 13 oder 14, dadurch gekennzeichnet, dass der Sensor konfiguriert ist, um kontinuierlich die Abweichungen mindestens eines Teils, vorzugsweise der Gesamtheit der Pixel der Matrix zu erfassen.
  16. System (23) nach einem der Ansprüche 13 bis 15, dadurch gekennzeichnet, dass es eine Kamera (17) umfasst, die mit dem Sensor ausgestattet ist, wobei die Kamera (17) vorzugsweise vom neuromorphischen Typ ist.
  17. System (23) nach einem der Ansprüche 13 bis 16, dadurch gekennzeichnet, dass die Bildverarbeitungseinheit (21) ein Modul für künstliche Intelligenz umfasst.
EP20201010.4A 2020-10-09 2020-10-09 Verfahren und system zur verbesserten messung der durchlaufzeit über eine zeitmesslinie Active EP3982337B1 (de)

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EP20201010.4A EP3982337B1 (de) 2020-10-09 2020-10-09 Verfahren und system zur verbesserten messung der durchlaufzeit über eine zeitmesslinie
US17/408,706 US20220111285A1 (en) 2020-10-09 2021-08-23 Method and system for improved measurement of the time of passage on a timekeeping line

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