JPH1085378A - Device for assisting judgment in karate match and circular court for karate match - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly and accurately conduct judgment in Karate match, even in the case of a single referee, by recording images pickedup with cameras on the ground and ceiling and on recording and reproducing means, reproducing these recorded images properly, and thereby accurately and quickly judging the 'winning trick'. SOLUTION: The device is provided with at least three cameras 3 which are arranged at nearly equal spaces apart around a competition area 1 and which are each faced to the center of the area 1, at least one camera 4 arranged on the ceiling in the center of the area and faced straight down, and a means for recording and reproducing the image pickup with these cameras.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a karate match determination support device that can accurately judge a karate match using a camera.

[0002]

2. Description of the Related Art In karate, "hand", a traditional martial art in Okinawa, has been developed as a self-defense technique for unskilled karate, and in recent years, games for competing in such techniques have become popular. In karate games, there are scoring matches and scoring matches that compete with the exactest skills.In each case, the judge must accurately judge the athlete's quick movements without a break. Judges had to be highly skilled and experienced, and it was extremely difficult to make accurate judgments.

[0003]

Conventionally, this determination is made by 4
A judge stands in each corner of the competition area such as a square, but the intense and quick movement of the competitor determines the aggression and receiving techniques of "thrust", "hit", and "kick" It is not easy for a judge who is a human to judge the hand or to determine the rule of "stopping" correctly, and it has been extremely difficult to maintain a judgment that can be satisfied by all players involved in the competition.

[0004] It has been medically proven that the speed of the “push” of karate is faster than the movement of the eyes, and it is impossible for humans to determine whether or not to compete in a “short-stop” game. Input is desired. The inventor of the present invention, while presiding over the All-Japan Karate Federation Referee Rule Making Committee, tackles this problem, and makes the determination of a karate match using multiple cameras instead of relying solely on humans. Invented a karate game determination support device that can be solved.

[0005]

According to the present invention, at least three terrestrial cameras are arranged at substantially equal intervals around a competition area, each of them being directed toward the center of the competition area, and are arranged above the center of the competition area. , At least one ceiling camera directed downward, and recording / reproduction means for recording / reproducing the images taken by the ground camera and the ceiling camera.

[0006] With this configuration, even if several judges are not present, one judge instructs the "start" of the game and simultaneously activates the cameras to record and reproduce the images. When recording is recorded in the means and judged as "decisive" and "stopped", if the "decided" is critical, immediately play back the video recorded in the recording / playback means and watch the camera image It can be used for final judgment.

For reproduction, various reproduction states are selected, such as synchronizing the images of the cameras, or combining the still images of some cameras with the step feed images of several other cameras depending on the situation. Can be determined.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the karate match determination support device of the present invention will be described in detail with reference to the drawings. FIG.
Shows a layout diagram of a camera explaining the principle of the present invention,
(A) is a plan view, (b) is a view on arrow B of (a). FIG. 2 is a block diagram showing one embodiment of the karate game determination support device of the present invention.

In FIG. 1, reference numeral 1 denotes a round competition area, and a ground camera 3 is disposed at each corner of an equilateral triangle 2 circumscribing the outer circle 1a, and is directed toward the center O of the competition area. At the top of the center O of the competition area,
A ceiling camera 4 facing downward is arranged.

[0010] A competitor fights in the competition area, and if his or her feet or body goes out of the competition area, he loses even if his opponent has no clue. Matches usually consist of one or three matches (2
Win if you take this). In the case of the game of “dimension stop method, hard type (light armor / heavy equipment armor)”,
Intermediate, heavyweight, and indiscriminate classes are held, and in the case of "shame games," they compete between the same styles. The game time is usually 3 minutes.

The size of the competition area can be determined as appropriate, but in this embodiment, the diameter is 8 m. The ceiling camera 4 is arranged at a height of 1.5 times the direct line of the competition area from the center O point of the competition area on the ground, and in this embodiment, at a height of 12 m. The relationship between the positions of the cameras 3, 3, 3, and 4 and the size of the competition area is not limited to this value, but at this level, the competitor 5 does not protrude from the imaging field of view, and the details of the competitor 5 The confirmation is easy and the judgment is good.

The viewing angles of the ground camera 3 and the ceiling camera 4 are as follows:
It is preferable to set the competition area 1 and the competitor 5 in the competition area 1 sufficiently within the field of view. Since the heavenly camera 4 is farther than the ground camera 3 with respect to the competition area 1, its lens is set to a slightly smaller angle than that of the ground camera 3. Therefore, the size of the image is not so different from that of the ground camera 3,
In addition, the image of the competitor near the periphery of the competition area 1 is also seen from directly above and the situation is easy to understand.

By arranging the cameras in this manner, at least one of the cameras can take a picture of a crucial state. Then, images captured by two or more cameras become image information that is more effective for determination.

[0014] As shown in FIG.
The data is sent to the recording / reproducing means 6 and is recorded synchronously. As the recording / reproducing means 6, a video tape recorder and various kinds of recordable / reproducible video discs can be used, and those capable of erasing / rewriting are preferable in operation. 7
Reference numeral 8 denotes a ceiling monitor for displaying an image captured by the ceiling camera 4, and 8 denotes a ground monitor for displaying an image captured by each ground camera 4, and is connected to each of the cameras 3, 3, 3, 4 via the recording / reproducing means 6.

Reference numeral 9 denotes a controller of the recording / reproducing means 6.
It is something that the judge has during the game and controls it. That is, the controller 9 causes the recording / reproducing means 6 to simultaneously start the recording of all the cameras 3, 3, 3, 4 synchronously, to stop recording at the same time, to return to the recording start point or to a desired time before. Operation buttons are provided for starting playback from there, setting a playback mode common to all cameras or individual playback modes (normal playback, slow playback, step playback, still, back playback, etc.), and stopping playback all at once.

The karate game judging support device of the present invention having the above-mentioned structure is used as follows. The judge (one person) (not shown) stands near the R point in FIG.
The "start" is instructed to the competitor 5, and at the same time, the controller 9 is operated so that the recording / reproducing means 6 starts recording the images of the cameras 3, 3, 3, and 4 at the same time. At the moment when he sees the "fix" between the competitors 5, he instructs the competitor 5 to "stop" and at the same time operates the controller 9 to operate the cameras 3, 3,
The recording operation of the recording / reproducing means 6 for imaging 3 and 4 is stopped all at once.

If the "rule" is clear,
Although the karate game determination support device of the present invention does not come into play, the instantaneous “decision” cannot be instantaneously and clearly judged with considerable probability. In this case, the judge immediately operates the controller 9 to reproduce the image of the "ruler" and makes a final judgment while watching this image on the monitors 7, 7, 7, and 8. Depending on the situation of the "ruler", the judge will need to synchronize the video of each camera, or make two cameras as still images and judge the other two cameras as step-forward images, etc. The controller 9 is operated accordingly.

The decision on a match must be accurate and quick. Therefore, the recording / reproducing means 6
Is desirably set to be in the state of recording stop immediately after start of reproduction. Alternatively, for example, the recording may be stopped immediately and the slow reproduction repeat state may be set to wait for the next controller operation.

The controller does not necessarily have to be possessed by the referee, but it goes without saying that a controller may be provided separately. The controller of the referee may be a remote controller that wirelessly connects to the recording / reproducing means 6. It is more reliable that the controller of the controller is connected to the recording / reproducing means 6 by a cable.

It is possible to use a plurality of ceiling cameras instead of one,
If the number of ground cameras is four or more, more diversified images can be obtained. The shape of the competition area is not limited to a circle, but may be, for example, a square. In the case of a square, it is preferable to arrange the ground cameras on the extension line of each of the four corners to make a total of four cameras. The distance between each ground camera and the center O point of the competition area is 1.3 of one side of the square. It should be about twice.

When the above-mentioned round court competition area is used, it can be used not only for judging the outcome of a game but also for qualifying a referee. For example, if the referee world license (valid for 4 years) is certified as follows in accordance with the probability that the referee has made the same decision as the camera of the present invention apparatus, an objective scale will be obtained. The motivation of the staff members is encouraged, and the quality of referees can be expected to improve.

[0022]

[0023]

As described above, according to the karate game judgment support apparatus of the present invention, even one judge can be used on the ground,
The image taken by the heavenly camera is recorded in the recording / reproducing means, and the recorded video can be reproduced as appropriate to accurately and quickly judge the “decisive point”, so that a fairer judgment of the karate game can be easily made. Become like

With the competition area being circular, the ground camera
By arranging one at each corner of the equilateral triangle circumscribing the competition area, it is economical to use only three ground cameras, and the competition area can be easily included in the viewing angle of the camera. The use of the karate game determination support device of the present invention facilitates easy-to-understand and convincing explanations to the audience, which can be expected to further develop karate as a brighter and easier-to-understand sport.

[Brief description of the drawings]

FIG. 1 is a layout view of a camera illustrating the principle of the present invention.
(A) is a plan view, (b) is a view on arrow B of (a).

FIG. 2 is a block diagram of an embodiment of a karate game determination support device according to the present invention.

[Explanation of symbols]

 1 Competition area 3 Ground camera 4 Ceiling camera 6 Recording / playback device 7 Ground monitor 8 Ceiling monitor 9 Controller

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[Procedure amendment]

[Submission date] September 26, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

For reproduction, various reproduction states are selected, for example, by synchronizing the images of the cameras or combining the still images of some cameras with the step feed images of some other cameras depending on the situation. Can be determined. Sand
Recording of multiple video cameras from different angles
In addition to normal playback, slow playback, frame-by-frame playback, etc.
Play with, for example, stopped with arm bent
If "extension" is stretched as it is, the opponent's body and fingertip interfere
Will it be in a state, it is not so far away
Or the fingertip touches the opponent in the state of "stop"
You can judge the delicate situation whether it has been
is there. ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] October 14, 1996

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

[Title of the Invention] Karate match judgment support device and karate test
Round coat for joint use

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

For reproduction, various reproduction states are selected, such as synchronizing the images of the cameras, or combining the still images of some cameras with the step feed images of several other cameras depending on the situation. Can be determined. That is, in addition to the normal playback, the recordings of a plurality of video cameras from different angles are played back using a technique such as slow playback, frame-by-frame playback, and the like. However, it is delicate whether it will interfere with the opponent's body and fingertip if it is stretched as it is, it will not be too far away, or whether the fingertip has touched the opponent in the state of `` stopping '' You can judge the situation. In addition, the circular coat for karate games of the present invention
The camera is located in the
Blind spots with a small number of cameras around
You can shoot the situation of the game without having to.

Claims (2)

[Claims] 1. At least three terrestrial cameras arranged at substantially equal intervals around a competition area, each pointing toward the center of the competition area;
A karate game determination support device, comprising: at least one ceiling camera directed downward; and recording / reproduction means for recording / reproducing images of the ground camera and the ceiling camera. 2. The competition area is circular, and a ground camera is provided near each corner of an equilateral triangle circumscribing the competition area.
The karate game determination support device according to claim 1, wherein the devices are arranged one by one.