JPH06319843A - Method for constructing data base of soccer game - Google Patents

Abstract

PURPOSE:To provide the data base by which an objective evaluation can be obtained at any time and by anybody with regard to individual and team fighting strength of a soccer team. CONSTITUTION:A game is recorded in a video recorder by a television camera, reproduced on a screen of an information processor by a reproducing operation, and after the game is started, the image is digitized after specific seconds, a still image is generated by stopping the reproduction, and on this still image, a square of a field 3 and a pair of opposed goals 4, 5 are indicated, and by setting a side in which the goals 4, 5 exist, and a side betweem the goals 4, 5 to the vertical axis and the horizontal axis, respectively and dividing them into plural equal parts, plural pieces of small frames 17 are set. These small frames 17 and the still image are superposed, coordinates are defined to each small frame 17 in order of vertical and horizontal sections, a player or a ball is detected, coordinates and action of the player, a necessary attribute and coordinates of the ball and existence of the points obtained are designated, and a result of detection related to the player and the ball and a designated and defined matter are inputted as character data to a storage device, by which the data base is constructed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for creating a soccer game database for converting a video image of a soccer game represented by the J League or the like into digital data and using it as an analysis material.

[0002]

2. Description of the Related Art In a soccer game represented by the J. League, etc., when analyzing a game, the coach or manager fills in the analysis data about the player's action by handwriting while watching the actual play or watching the broadcast TV. I was creating it. Alternatively, while watching the recorded video image again, the analysis data of the detailed movement was written in by handwriting.

[0003]

[Problems to be Solved by the Invention] It was difficult to follow a fast moving ball on a video image, and it was difficult to follow the movements of 22 players in both teams. Since there is no unified view on the movements of each player, there is a problem that the evaluation is not uniform, the judgment depends on the subjectivity, and the team's strength lacks an objective evaluation.
The purpose of this invention is to make an objective evaluation of team strength available to anyone at any time, and to significantly increase the number of soccer fans.

[0004]

In order to achieve the above-mentioned object, the present invention records a game in which a plurality of players carry the ball to the goal in a video recording device by a television camera with a view of the entire field of a soccer field. To do. The video recording device is set to the reproduction operation to reproduce the moving image of the game on the screen of the information processing device, and the image is digitized every specific seconds after the start of the game. Playback is stopped to create a still image, the four corners of the field are indicated on this still image, a pair of opposing goals on the field are indicated, and the side with the goal is divided into multiple equal parts to divide the goal. A plurality of small frames are set in the field by dividing the sides into vertical parts. The plurality of small frames and the still image are displayed in an overlapping manner, the coordinates are defined in each of the small frames in the order of vertical and horizontal divisions, and the coordinates are sequentially examined to detect the player or the ball. Character data is created by specifying the detected player's coordinates, movements, and necessary attributes, specifying the detected ball coordinates and the presence or absence of a preset score. When the detection operation is completed on one still screen, the video reproduction is restarted, and the next still image is similarly created after the next specific second, and the next character data is created. The character data is created for all video images during the game, and the character detection data of the players and the ball and the character data of the designated and defined items are input to the storage device to form a database.

[0005]

[Operation] A relational database is made to act on this database to plot and display the movements of the player and the trajectory of the ball in time series. The tendency of the player's movement in the yearly game is quantified, and it is used as a means for evaluation of each team as a whole, analysis of the player's movement, and analysis of the ball movement, and it is used as a criterion for giving conditions such as evaluation.

[0006]

The present invention will be described below with reference to the drawings. Figure 2
FIG. 1 is a diagram showing an environment and an entire apparatus for realizing the present invention.
In FIG. 2, a television camera 2 is arranged above the soccer field 1 on a ceiling, a steel tower, or the like. A frame-shaped field 3 is drawn on the soccer field 1, and goals 4 and 5 are placed on opposite sides of the field. The TV camera 2 photographs the inside of the soccer field 1 including the field 3, and the analog video signal from the TV camera 2 is recorded in the video recorder 6 provided in a separate room. In FIG. 3, the video recorded in the video recorder 6 after the end of the match is analyzed by the computer 9. An A / D (analog / digital) conversion circuit 11, a timer 13, an operation panel 14, a light pen 15, and an external storage device 21 are connected to the computer 9. A / D (analog / digital) conversion circuit 11
Is interposed between the video recorder 6 and the computer 9 to convert a video analog signal into a digital signal,
A still image is generated.

The computer 9 is provided with a display screen 7 and displays a video image of a moving image. By pressing a key on the operation panel 14, the video image of the moving image at the moment of pressing is displayed as one still image. It A still image is a video image of a moving image digitized by operating the AD (analog / digital) conversion circuit 11 by pressing a key. A partition program 22 and a digitization program 23 are stored in the external storage device 21. In FIG. 1, when the four corners A, B, C and D of the field 3 shown in the video on the screen 7 are designated by the light pen 15, the division program 22 operates to divide the field 3 into the small frames 17. The division program 22 divides the field 3 having a width of 105 m and a length of 65 m into a small frame 17 of 1 m × 1 m according to a program in which the field 3 is stored in advance. That is 10 on the side
By dividing into 5 equal parts and the vertical part into 65 equal parts, 105 × 65 = 6825 small frames 17 are created. In order to simplify the explanation, in the figure, the width is divided into 11 equal parts and the length is divided into 9 equal parts to form 9 × 11 = 99 coarse small frames 17, and the discussion will proceed. In the following description, the area of the small frame 17 is 2 m × 2 m. In addition, data input is performed by instructing the field 3 with the light pen 15. As another input method, the self-recognizing reflectors are placed on the four corners A, B, C, and D, and the four corners are marked by a predetermined program. It may be identified.

Now, the game is developed on the field 3 consisting of the small frames 17 thus set. For example, 11 Yomita teams and 11 Kiyoyama teams squeeze on field 3 and move about to hit the enemy's goal 4 (5) for 90 minutes. Regarding the digitized still image, the following conditions are defined before operating the digitizing program 23, and the external storage device 2 is used as the data file 25 of FIG.
Remember in 1. First, the game content is defined as a normal game with an identifier of t and a free kick as an identifier of f.
An identifier of the letter B is attached to the ball, and each team is defined by the initial letter of the team name, for example, s for the Kiyoyama team and y for the Yomita team. Further, each player is defined as shown in Table 1 by assigning a uniform number and a role for each team.

Table 1 Identification Code Identification Code Player Kiyoyama Team Uniform Number Role Player Yomita Team Uniform Number Role Fujikawa s-1 GK Yamauchi y-1 GK Tabi s-2 DF dig y-2 DF Bereira s-3 DF Marco y- 3 DF Ishikawa s-4 DF Yazawa y-4 DF Tonami s-5 DF Jase y-5 DF Mimi s-6 FW Tony y-6 FW Pillars and s-7 FW Mukai y-7 FW Morasi s-8 FW Hirata y-8 FW Sanzo s-9 MF Oki y-9 MF Kikuhara s-10 MF Milan y-10 MF Takeda s-11 MF Sanada y-11 MF Here GK is the goalkeeper, DF is the defense, FW is Forward and MF represent midfield. FIG. 7 shows an example of the roles of each player and the basic camp on Field 3 for a team. In FIG. 7, one Field 3 of one team is shown.

Next, the type of action Ac executed by each player is defined as shown in Table 2 below. The meaning is as described in the appendix. Table 2 Code Ac Action Meaning DR Dribble Roll the ball with one foot and carry it PS pass Kick and pass the ball to your side PSA Assist pass Last pass to help the shoot ST shoot Kick the ball towards the goal to score GK goal Kick Kick performed by a team that successfully defends from the front of the goal FK free kick Ball kick from a stationary position after foul CK Corner kick Kick from the side of the goal due to shot failure SR Throwing Throwing from outside the frame 7 DC dribble cut Opponent Blocking the dribble of the player PC Pass cutting Blocking the opponent's pass CL Clear kicking the ball toward the goal PK penalty kick Goal for the goal to score a goal that can be obtained from the opponent's foul near the goal Kick

At is defined as the attack player, and Po is defined as the ball point. The small frame 17 created for the field 3 is assigned an address as shown in FIG. The horizontal coordinates are displayed as numbers 0, 1 to 11 and 12, and the vertical coordinates are displayed at alphabets X, A, B to H, I and Y. Here, the ordinates X and Y and the abscissas 0 and 12 represent the outer small frame 17 group surrounding the field 3. This image pattern is also stored in the external storage device 21 as the data file 25. A method of converting a video image of a game duplicated in the image pattern of the field 3 into character data will be described below. A 90-minute video of one game is frozen every second and sampled. The sampled image is 90 minutes × 60 seconds = 5400 because a 90-minute video of one game is frozen every 1 second in the field. The frozen still image is converted into character data by the light pen 15. When converting video data to character data, the video playback is also stopped.

If the video is continuously reproduced even while the still image is displayed on the screen 7, it takes a long time to convert the character data. Therefore, the next sampled image every one second is overlooked during the conversion, which is avoided. This is because. The position of each player of both teams in the small frame 17 on the still image is input with the light pen 15 for each person. At the same time, the position of the ball is similarly input with the light pen 15. 99 small frames 17 are X-0, A-1, B-1, C-1, ... H
, I-1, Y-1, ... Can be specified using the previously defined coordinates.

Each player of both teams is always located in one of the small frames 17 at the time of sampling (in some cases, it may be on the boundary of the two, three, or four small frames 17; See below). FIG. 1 shows an example of a frozen image, in which the appraiser judges the player at the coordinate A-1 on the field 3 and uses the light pen 15 to enter the name, for example, if Yamauchi, key-in as y-1. Record as character data. There may be two players in the same small frame 17, and the player P and the ball B in each small frame 17 are similarly input to the external storage device 21. That is, the field position of each player is input every one second. At this time, the appraiser also judges the action Ac taken by each player to score or defend, and uses the light pen 15 to input. 12 types of actions are recorded in Table 2. First,
About one static screen one second after the start of the game All small frames 17
About the whereabouts of player P and ball B are recorded as character data without omission.

The same recording work is performed (90 minutes × 60 seconds) =
This is carried out on a still screen of a field of 5400 frames and individual data is accumulated to form a data table composed of the character data of FIG. Figure 5 shows an example of an analysis of a team,
The table of the character data created about seven still images (pages) until seven seconds after the start of the game is illustrated. For example, in the still image after 2 seconds, D-5 of the small frame 17 has Miura who has passed the ball. The ball positions are hatched so that the movements of the ball B and the player P can be understood at a glance. In addition, the movement of the player P far from the ball B can be understood at a glance. If the expert sees the character data of FIG. 5, for example, Miura of one team passes the ball to Takeda of the same team at coordinate D-5, and Takeda who receives the ball at coordinate C-7 dribbles. It is also possible to read various information such as.

The character data for each player is stored in the external storage device 21 in the data frame format shown in FIG. The structure of this data frame shows a ball column 30 showing the position of the ball on the screen 7, a content column 31 showing the contents of a match such as a normal game t or a free kick f, a team column 32 showing the team identification, and a player identification. A name column 33, a position column 34 indicating a player's play location, and an action column 3 indicating a distinction between actions
5, a role column 36 showing the role of each player, and a summary column 37 for personal data showing the school from which the player came from.

In the ball column 30, the placement of the ball is entered according to the coordinates of the small frame 17 in FIG. In the content column 31, t is entered for a normal game, f is entered for a free kick, and y is entered for the Yomita team and s is entered for the Kiyoyama team in the team column 32. In the name column 33, the code name for player identification in Table 5 is entered. In the position column 34, the coordinates of the player's play place are entered according to the small frame 17 in Table 1 in the same manner as the ball. In the operation column 35, the operation code for the operation shown in Table 2 is entered. In the role column 36, a role code indicating the role of the player in Table 7 is entered, and in the summary column 37, a summary code indicating other descriptions is entered. The operation of inputting (recording) numerical data (raw data) with the light pen 15 from a still image every second of the start of the game will be described with reference to the flowchart of FIG.

In step S1, the four corners on the screen 7 are determined, and in step S2, the division program 22 determines each small frame 17. In step S3, the input person scans the small frame 17 of the screen 7 from the upper left to the right and then to the lower row for the ball B and the player in the following order. That is, coordinates A-0, A-1, A-2, ... A-10, A-11, A-12 B-0, B-1, B-2, ... B-10, B-11 , B-12 ... I-0, I-1, I-2, ... I-10, I-11, I-12 Y-0, Y-1, Y-2, ... Y- Check in the order of 10, Y-11, and Y-12.

In step S4, the scanning is repeated until a ball B or a player P is found in any one of 17 and if the found ball is a ball B in step S5, the process goes to step S6, where the coordinates of the position are found. , I-1
0 or the like is input to the external storage device 21. If it is not the ball B, the process proceeds to step S7, and various information about the player P is input using the light pen 15 and the keyboard 14 according to the data frame of FIG. In step S8, it is checked whether the information of 22 players P has been input. If no input has been made, the process returns to step S3 to search for the position of the ball and the player P. That is, if the movements of the player P are recorded without omission, the process proceeds to step S9 to check whether the ball position has already been registered. If no input has been made, the process returns to step S3 to search for the ball position. Ball B in step S9
And if the positions of the 22 players P have been determined, step S
In step 10, it is checked whether data of 5400 still images has been created. If not completed, step S1
Then, as shown in FIG. 6, up to 5400 sheets, one frame later (frame) still image data is created.

An example of raw data (character data) of the first page created by the operations of steps S1 to S10 when the position of the player on the stadium is shown in FIG. 1 is shown below. One second after the start of the match, the player y-11 of the Yomita team and the player s-6 of the Kiyoyama team are in the area of the coordinate A-1 in the normal play t (not free kick). The Yomida team player y-11 had a name of Sanada, the role was Forward Defense, and the Kiyoyama team player s-6 had a name of Mami, and the role was Forward De and passed to his side. Examining the small frame 17, there is a ball B in the middle of the pass in the area of coordinates C-3. The screen 7 at this time is examined, and the movements of all the players P are created as shown in Table 3.

Table 3 (raw data) 1 second later No. Page 1 Ball field Game content field Team field Name field Position field Action field Role field Summary field C3 t yy -11 A-1 PS FW ts s-6 A-1 DF ・ ・ ・ t y y-9 D-5 MF ··· ty y-4 I-6 GK 1 ball 11 players

Similarly, a page of character data as shown in Table 3 is prepared from page 1 to page 5400 as shown in FIG. The character data thus obtained is stored in the external storage device 21 for each game. By using a relational database on the stored and stored character data, for example, the trajectory of the ball within a certain time can be displayed on the screen 7 in a visually appealing manner as shown in FIG. Further, as shown in FIG. 8, it is also possible to display or print the position of each player after 1, 2, 3 ... Seconds every second as a list of figures. Especially for kicks before the goal that scored, you can check the action for each player. In addition, it is possible to analyze the direction of the ball at the time of a free kick and the pattern of the defense position of the goalkeeper. In the above embodiment, the video is digitized every 1 second after the start of the match, but even after every 2 seconds after the start of the match, 3 seconds or 0.
It may be 5 seconds later, or any number of seconds as long as the situation of the game can be faithfully sampled. Further, although the area of the small frame 17 is 1 m × 1 m in the vertical and horizontal directions, it may be an appropriate size such as 2 × 2, 2 × 3. The character data table is not limited to the format shown in FIG. 5, and may be the primary data sheet shown in FIG. The first data sheet pre-determines such a form and creates it for each player every second after the start of the match,
In one game, 60 seconds × 90 = 54,000 sheets may be created. The primary data sheet may be an actual printed matter or may be stored as software in a hard disk or the like. Further, although one camera 2 is used in FIG. 2 in the above-described embodiment, as shown in FIG. 13, the four pillars P1, P2, P3, and P4 standing upright in the stadium are located above and below, respectively. Two
We set up cameras for each stage, using a total of eight units, the height of the ball, the jump height of the player, and the player's contact with the ball (kick).
It is also possible to take in the height as data. Furthermore, in the above embodiment, the player's position was manually input with a light pen, but as shown in FIG.
It is also possible to use an indoor radar device R, attach a marker with a specific code to each player's clothes, and digitize the movements of each player in real time with a combination device of the radar device R and a computer. .

[0022]

As described above, according to the present invention, the video is digitized a specific number of seconds after the start of the game, a still image is created, four corners of the field are indicated on the still image, and the on-field counter is displayed. Set a plurality of small frames in the field by dividing the vertical and horizontal lines of the goal into multiple equal parts, display the multiple small frames and the still image, and display each small frame vertically and horizontally. Define the coordinates in the order of divisions, detect the player or ball by examining these coordinates in order, specify the coordinates of the detected player and the action and necessary attributes, specify the coordinates of the detected ball and the presence or absence of a score, and Since a character database has been created for, it is possible to provide a database that makes an objective evaluation of the strength of a soccer team available to anyone at any time. If this database is used as an open system communication database, general Juan can freely pull out data about his or her favorite team and enjoy the game through the information providing service company. In addition, sports magazines and specialized magazines can be used to post play analysis of players from various angles, which is useful for predicting matches and combining materials. From the team owner side, it is also referred to in the assessment of each player, performance evaluation, and judgment of contribution.

[Brief description of drawings]

FIG. 1 shows a still image defining the coordinates of the field of the invention.

FIG. 2 is a layout view of the entire device for implementing the present invention.

FIG. 3 is a block diagram of an apparatus for implementing the present invention.

FIG. 4 is a flowchart illustrating a method of creating a database of soccer games according to the present invention.

FIG. 5 is a diagram showing an example of character data of the present invention.

FIG. 6 is a conceptual diagram showing a process of constructing a plurality of pages of character data according to the present invention.

FIG. 7 is a diagram showing a basic formation on a general field.

FIG. 8 is a time-series graphic table obtained by using the database of the present invention.

FIG. 9 is a time-series ball track diagram obtained by using the database of the present invention.

FIG. 10 is a format diagram of a data frame for creating character data of the present invention.

FIG. 11 is a diagram showing an example of a form for entering character data of the present invention.

FIG. 12 is a layout view of another device that realizes the present invention.

FIG. 13 is a layout view of an apparatus when using a plurality of cameras implementing the present invention.

[Explanation of symbols]

 1 Soccer field 2 Television camera 3 Field 4, 5 goals 6 Video recorder 9 Computer 11 A / D (analog / digital) conversion circuit 13 Timer 14 Control panel 15 Light pen 17 Small frame 21 External storage device 22 Division program 23 Numericalization Program P1, P2, P3, P4 Pillar R radar etc.

Claims (5)

[Claims] 1. A video recording device records a game in which a plurality of players carry a ball to a goal in a field of view of a soccer field by a television camera, and the video recording device processes information through an analog / digital conversion circuit. The video recording device is connected to the device and the video recording device is operated to reproduce the moving image of the game on the screen of the information processing device, and after a certain second after the start of the game, the image is digitized by the analog-digital conversion circuit and reproduced. Stop to create a still image, indicate the four corners of the field on this still image, indicate a pair of opposing goals on the field, divide the goal side vertically and divide it into multiple equal parts. A plurality of small frames are set in the field by dividing the area into horizontal parts and the plurality of small frames and the still image are displayed in an overlapping manner. Define the coordinates in the order of division, detect the player or ball by checking these coordinates in order, specify the coordinates of the detected player and the action and necessary attributes, specify the coordinates of the detected ball and the presence or absence of a score, When the character data is created and the detection operation is completed on one still screen, the video playback is restarted, the next still image is created in the same way after the next specific second, and the next character data is created. The character data is created for all video images during the game, and the character detection results of the players and the ball and the character data of the items specified and defined above are input to the storage device as a database, which is relational to this database. A method of creating a database of soccer matches that uses a database to analyze each team's evaluation, player movements, and ball movements. 2. A soccer game in which similar databases are created and accumulated for a plurality of games, and a relational database is made to act on this database to analyze each team's evaluation, player's movements, and ball movements. How to create a database. 3. A method of creating a database of soccer matches, wherein the required attributes are game definition, team definition, and role definition individual definition. 4. In addition to the small frame in the field, a small frame having the same area as the small frame is added to the outer circumference of the field to expand the coordinate system, and the movements of the player and the ball are detected also in the outer circumference of the field. A method of creating a database of soccer games characterized by doing so. 5. The specific second after the start of the match is 1 second,
In one game, 90 minutes × 60 seconds / 1 second = 5400 still images are created in the database, and a method of creating a database of soccer games is characterized.