KR20090118634A - System and method of athletics automatic analysis - Google Patents

Abstract

PURPOSE: An automatic analysis system and method for athletics using video information is provided to make a user easily search and receive the data by judging specific situation from the athletics image, extracting the frame of the specific situation, and generating the image file from the frame. CONSTITUTION: An event database(130) stores game rule information according to each game event. An image measuring unit(110) generates the location information of a ball and athletes. A coordinates determination server(120) compares the location information of the ball and athletes with the game rule information, and searches the matched-athletics event.

Description

System and method of athletics automatic analysis

The present invention relates to an automatic analysis system and method of an athletic game, and more particularly, two or more cameras installed at predetermined positions of a stadium photograph the positions of the balls and the players to apply the positions of the balls and the players to the plane. Calculate the dimensional coordinate value, overlap the two-dimensional coordinate values calculated by two or more cameras, extract the height value of the athletes, and calculate the three-dimensional coordinate values accordingly to analyze the ball and the player position information, When a specific situation of the game occurs, the present invention relates to an automatic analysis system of an athletic game that can compare the pre-stored game rule information and the position information of the player and the ball and calculate the image and analysis data accordingly.

Most athletics run fast and in a row, and many athletes play their roles at once.

Accordingly, there was a difficulty in accurately determining and recording the content of the game immediately by watching the game.

In addition, even if professional recorders record, there is a limit to being provided with a large amount of sports competition content.

Therefore, it takes a lot of time and effort to analyze the contents of athletic competitions, and it is difficult to analyze the movements of the athletes precisely as it is difficult to immediately and quickly analyze the competitions.

In addition, there was a problem in that it is not possible to obtain data for an objective evaluation of the individual and team of the athletic team at any time.

An object of the present invention devised to solve the above problems, when shooting a sports game using a camera, generates position information of the players and the ball from the captured image, using the position information of the players and the ball By automatically judging that a specific situation of an athletic event occurs, extracting a frame constituting the specific situation, and by connecting the frames in sequence to generate an image file, users can easily search and receive the desired data The present invention provides an automatic analysis system for athletic events and a method thereof.

In addition, another object of the present invention is to attach a keyword index for self-determining a specific situation to a predetermined portion of the video file, and to provide a video file corresponding to the keyword when a user inputs a keyword for a specific situation that occurred during an athletic event. The present invention provides an automatic analysis system of a sports event and a method thereof.

In order to achieve the above object, the automatic analysis system and method of an athletic game according to an embodiment of the present invention, two or more cameras are installed in a predetermined position of the stadium to shoot the position of the ball and the players of the ball and players Two-dimensional coordinate values are calculated by applying the position to the plane, two-dimensional coordinate values calculated by two or more cameras are superimposed, and the height values of the athletes are extracted, and three-dimensional coordinate values are calculated accordingly. While analyzing the location information, if a specific situation of the athletic game occurs, it is characterized by comparing the pre-stored game rules information and the location information of the ball and the players to calculate the image and analysis data accordingly.

In addition, the automatic analysis system and method of the athletic competition according to an embodiment of the present invention, the event database for storing the game rules event information for each athletic event according to the specific situation of the athletic competition; An image measuring unit generating position information of the ball and the players; And a coordinate determination server configured to receive position information of balls and players from the image measuring unit, compare the match rule information previously stored in the event database, and determine whether there is a matched sporting event. It includes.

In addition, the event database, characterized in that the athletic rules are stored for each athletic event table.

In addition, the location information is defined as (x, y, z), wherein x represents the horizontal value of the playing field, y represents the vertical value, and z represents the height value.

The image measuring unit may photograph a sports event using two or more cameras at which angles are measured, separate a background and an area other than the background from the photographed image, and remove noise of an area determined to be an area other than the background. To generate the location information.

In addition, when the coordinate judging server determines that a specific athletic game event has occurred, the coordinate judging server extracts a corresponding frame constituting the athletic game event, sequentially combines the extracted frames, generates an image file, and then indexes the index. It is characterized by attaching.

The index may be a keyword index for describing an athletic event.

In addition, when the coordinate judging server receives a keyword from the user, the coordinate judging server retrieves a keyword index and extracts an image file corresponding to the keyword index and provides the same to the user.

According to another feature of the present invention for achieving the above object, (a) two or more cameras installed at a predetermined position of the stadium to shoot the position of the ball and the player, by applying the position of the ball and the player to the plane Calculating a two-dimensional coordinate value, overlapping two-dimensional coordinate values calculated by two or more cameras, extracting height values of the players, and calculating a three-dimensional coordinate value accordingly to generate the ball and the player position information. (b) receiving position information of the ball and the players from the image measuring unit, comparing game rule information previously stored in an event database, and determining whether there is a matched sporting event; (c) If the determination result of step (b) determines that a specific athletic event has occurred, the coordinate determination server extracts a corresponding frame constituting the athletic event, and combines the extracted frames sequentially to generate an image file. Making; And (d) attaching a keyword index describing an athletic event to the image file by a coordinate determination server.

In addition, (e) the coordinate determination server receiving a keyword from the user; (f) searching and extracting, by the coordinate judging server, whether there is an image file matching the input keyword by searching the keyword index; And (g) (f) providing the extracted image file to the user; It further includes.

According to the present invention, when shooting an athletic event using a camera, the position information of the players and the ball is generated from the recorded image, and the specific situation of the athletic game occurs using the position information of the players and the ball. By automatically determining, extracting the frame constituting the specific situation, and by connecting the frames in sequence to create an image file, an automatic analysis system and method of the athletic game that users can easily retrieve and provide the desired data Can provide.

In addition, an automatic analysis system of a sports event, which attaches a keyword index for a specific situation to a predetermined portion of the video file, and receives a keyword for a specific situation that occurred during a sports game, when the user inputs a keyword corresponding to the specific situation. You can provide that method.

Hereinafter, with reference to the accompanying drawings, the automatic analysis system and method of an athletic game according to a preferred embodiment of the present invention will be described in detail.

Figure 1 is an overall system diagram showing the overall configuration of the automatic analysis system and method of the athletic game according to a preferred embodiment of the present invention.

Referring to FIG. 1, the present invention includes an image measuring unit 110, a coordinate determination server 120, and an event database 130.

The image measuring unit 110 generates position information of the ball and the players.

The location information is defined as (x, y, z), when viewed from the outside of the playing field relative to the goal line, x represents the horizontal value of the playing field, y represents the vertical value, and z represents the height value.

3 is a view showing the generation of three-dimensional coordinate values in the position of the ball and the player of the present invention.

Referring to FIG. 3, the image measuring unit 110 photographs an athletic game using two or more cameras.

The location information is separated from the background from the photographed image, and the location information is generated by removing noise of an area determined to be an area other than the background.

In the image measuring unit 110, it is obvious to those skilled in the art that the camera generates location information with the captured image.

In more detail, the image measuring unit 110 receives an image in an RGB or YUV format from a camera.

This is a process of acquiring an image from a camera in real time, and capturing an image in a DV format (720/480) or an HD format (1440/1080). Using the image obtained through the above process, the image measuring unit 110 extracts a background image excluding all moving objects.

In more detail, the image measuring unit 110 classifies the ball and the player based on the size information of the moving object.

It is assumed that the uniform color of each player is divided into two colors, and each team of players is distinguished using the extracted RGB values.

RGB is an abbreviation of red, green, and blue, and the method of representing RGB is divided into 6 digits by adding # and # 000000, etc., and two digits each represent a ratio of red, green, and blue.

RGB values are represented in hexadecimal, where # 0000FF is blue, # FF0000 is red, and # 000000 is black.

In this way, the team of each player can be identified by the RGB value.

Thereafter, the image measuring unit 110 rearranges the images captured at predetermined frame intervals using a Sorting algorithm, and then creates a background image from which all moving objects are excluded.

 In addition, the image measuring unit 110 separates the image input from the camera into a Lab region and performs binarization on each region of L, a, and b through histogram analysis. Thereafter, the image measuring unit 110 separates the background and the non-background region based on the binarized Lab data.

In addition, the image measuring unit 110 determines an area that is not a background as a meaningful area. At this time, the non-significant part is removed.

Thereafter, the image measuring unit 110 separates the meaningful region determined as described above by using a segmentation algorithm, removes noise, and extracts data.

The image extracting unit 110 generates the three-dimensional coordinates from the camera position, that is, the position information (x, y, z) using the data.

For example, two or more cameras installed at predetermined positions of the stadium photograph the positions of the balls and the players, apply the positions of the balls and the players to a plane, calculate two-dimensional coordinate values, and calculate two-dimensional coordinates calculated by the two or more cameras. By superimposing the coordinate values, the height values of the athletes are extracted, and three-dimensional coordinate values are calculated accordingly.

In other words, two cameras capture the position of one athlete, but overlap the coordinates of the athlete's head with the coordinates of the athlete's foot in the position information of the athlete taken from one camera and the position information of the athlete taken from the other camera. The height of the athlete, or z, is calculated.

The coordinate determination server 120 receives the position information of the ball and the players from the image measuring unit 110, compares the match rule information previously stored in the event database 130, and determines whether there is a matched sporting event. .

On the other hand, when the coordinate determination server 120 determines that a specific athletic event has occurred, the coordinate determination server extracts the corresponding frame constituting the athletic event, generates the image file by sequentially combining the extracted frames, Attach an index.

The index is preferably a keyword index for describing an athletic event.

In addition, when the coordinate determination server 120 receives a keyword from the user, the coordinate determination server searches for the keyword index, extracts an image file corresponding to the keyword index, and provides the same to the user.

The event database 130 stores game rule information for each sport event according to a specific situation of the sport game.

In addition, the event database 130, the game rule information for each athletic event is stored in a table.

Table 1 shows the event database. In the present embodiment will be described by taking football as an example of the athletic game to help explain.

Soccer events are defined as goal, drawing, forward pass, backward pass, offside and free kick.

Assume that the length (x = 110) and width (y =) 75 of the football stadium is.

Referring to [Table 1], the goal generally means that a goal is recognized only when the ball passes completely through a door of width 7.32m and height 2.44m, which is set in the center of the goal line, and the coordinate judgment server ( 120 determines that the y value is 33.84 to 41.16 among the position information (x, y, z) of the ball, and the x value crosses the goal line (x = 0).

In addition, the drawing generally means that the player throws the ball up from the touch line and delivers it to the playing field. In the present invention, the coordinate determination server 120 has a y value among the position information (x, y, z) of the ball. If it is near this touch line (y = 0) (e.g., judged to be near +5 on the basis of y = 0) and z = 100 or more, it is determined as a drawing.

Meanwhile, the event database 130 may be provided with various storage media such as an EPROM, a flash memory, and an external memory according to the capacity of the data to be stored.

Hereinafter, the operation of the present invention will be described in detail with reference to [Table 1] and [FIG. 2].

Figure 2 is an exemplary view for explaining the operation of the present invention, a scene in which the goal is shown.

First, the image measuring unit 110 photographs the athletic situation, and generates the position information of the player and the ball from the captured image.

In the present exemplary embodiment, the image measuring unit 110 may sequentially generate player coordinate values (10, 8, 0) and goal coordinates (9, 7, 0) and (0, 4, 0).

Thereafter, the image measuring unit 110 transmits the generated player coordinate value and the ball coordinate value to the coordinate determination server 120.

Then, the coordinate determination server 120 provides the position information (for example, player coordinate values (10, 8, 0), ball coordinate values (9, 7, 0), (0, 4, 0)). Received, and compares the match rule information previously stored in the event database 130, and determines whether there is a match event event.

 That is, the coordinate determination server 120 determines that the coordinate values of the bones received from the image measuring unit 110 are sequentially changed from (9, 7, 0) to (0, 4, 0), and the event Of the pre-stored athletic game events in the database 130, it is determined that the match rule information of the 'goal'.

Thereafter, the coordinate determination server 120 extracts a corresponding frame constituting a specific situation called 'goal', and generates the image file of the bone by sequentially combining the frames.

On the other hand, it is apparent to those skilled in the art that the coordinate determination server 120 generates the image file by combining the extracted frames.

Thereafter, the coordinate determination server 120 attaches a keyword index of 'goal' to a predetermined portion of the image file generated as described above.

When the keyword index is attached, when the user inputs a keyword, the coordinate determination server 120 provides the user with an image file corresponding to the keyword, thereby providing the user with ease of searching.

Figure 4 is a flow chart showing the operation of the automatic analysis system and method of the athletic competition according to a preferred embodiment of the present invention.

Hereinafter, with reference to the accompanying Figure 4, the operation of the automatic analysis system and method of the athletic competition will be described in detail.

First, the image measuring unit 110 captures an athletic game using a camera and separates the photographed image into a background and a moving object (step S100).

The image measuring unit 110 distinguishes between the ball and the player based on the size information of the moving object (step S110).

The image measuring unit 110 distinguishes teams of respective players with the distinguished images of the players (step S120).

At this time, the team of each player is distinguished based on the RGB value.

RGB is an abbreviation of red, green, and blue, and the method of representing RGB is divided into 6 digits by adding # and # 000000, etc., and two digits each represent a ratio of red, green, and blue.

RGB values are represented in hexadecimal, where # 0000FF is blue, # FF0000 is red, and # 000000 is black.

In this way, the team of each player can be distinguished through RGB values.

Accordingly, the image measuring unit 110 generates the ball and the location information of each player, and transmits the location information of the ball and the player to the coordinate calculation server 120 (step S130).

At this time, the position information of the ball and the player, two or more cameras installed at a predetermined position of the stadium to shoot the position of the ball and the player to calculate the two-dimensional coordinate value by applying the position of the ball and the player to the plane, two or more cameras By superimposing the two-dimensional coordinate values calculated in, the height values of the athletes are extracted, and the three-dimensional coordinate values are calculated accordingly.

That is, two cameras are photographed with the position of one athlete, but the coordinates of the head of the athlete in the position information of the athlete in the position information of the athlete photographed by one camera and the position information of the athlete photographed by the other camera Are superimposed to calculate the height of the athlete, or z.

Then, the coordinate calculation server 120 is provided with the location information of the ball and the player from the image measuring unit 110, using the ball and the location information of the player matched among the match rule information previously stored in the event database 130 It is determined whether there is a game event (step S140).

As a result of the determination in step S140, when the coordinate determination server 120 determines that a specific athletic event occurs, the respective frames representing the specific situation are extracted, and the extracted frames are sequentially combined to generate an image file. Step S150).

Thereafter, the coordinate determination server 120 attaches a keyword index for describing an athletic event to the image file (step S160).

Meanwhile, a case where the coordinate determination server 120 receives a keyword indicating a specific situation of an athletic game from the user may occur (step S170).

Then, the keyword index of the image file stored in the coordinate determination server 120 is searched to find out whether there is an image file matching the input keyword (step S180).

As a result of the determination in step S150, when an image file matching the keyword input from the user is searched for, the image file is provided to the user (step S190).

The present invention is not limited to the above-described preferred embodiments and can be easily modified by anyone of ordinary skill in the art without departing from the gist of the invention claimed in the claims, Such changes are intended to fall within the scope of the claims.

Figure 1 is an overall system showing the overall configuration of the automatic analysis system and method of the athletic competition according to an embodiment of the present invention

2 is an exemplary view for explaining a process in which the present invention operates, showing a scene in which a goal occurs.

Figure 3 is a view showing the generation of three-dimensional coordinate values in the position of the ball and the player of the present invention Figure 4 is a flow chart showing the operation process of the automatic analysis system and method of the athletic game according to a preferred embodiment of the present invention

<Description of the symbols for the main parts of the drawings>

110: image measuring unit 120: coordinate determination server

130: event database

Claims (9)

Two or more cameras installed at predetermined positions of the stadium photograph the positions of the balls and the players to calculate the two-dimensional coordinates by applying the positions of the balls and the players to the plane, and calculate the two-dimensional coordinates calculated by the two or more cameras. Overlapping, the height value of the athletes are extracted, and the three-dimensional coordinate values are calculated to analyze the ball and the player's position information. Automated analysis system of athletics that can compare and calculate image and analysis data accordingly. The method of claim 1, Event database that stores game rule information for each sport event according to the specific situation of the sport game An image measuring unit generating position information of the ball and the players; And A coordinate determination server receiving position information of balls and players from the image measuring unit, comparing the match rule information previously stored in the event database, and determining whether there is a matched sporting event; Automatic analysis system of athletic events, including. The method of claim 2, wherein the event database, The automatic analysis system of athletic events, characterized in that the game rule information is stored in a table for each sports event. The method of claim 2, The location information is defined as (x, y, z), X represents a horizontal value of the playing field, y represents a vertical value, and z represents a height value. The method of claim 2, If the judging server determines that a specific athletic event has occurred, The coordinate determination server extracts the corresponding frame constituting the athletic event, sequentially combines the extracted frames, generates an image file, and attaches an index to the automatic athletic system. The method of claim 5, wherein the index is Automatic analysis system of athletic competitions, characterized in that the keyword index for describing the athletic events. The method of claim 6, When the coordinate judging server receives a keyword from the user, the coordinate judging server searches the keyword index, extracts an image file corresponding to the keyword index, and provides the user to the user. (a) Two or more cameras installed at predetermined positions of the stadium photograph the positions of the balls and the athletes, calculate the two-dimensional coordinate values by applying the positions of the balls and the athletes to the plane, and calculate the two-dimensional coordinates calculated by the two or more cameras. Overlapping the coordinate values of, extracting the height values of the players, and calculating the three-dimensional coordinate values accordingly to generate the ball and the player position information; (b) receiving the position information of the ball and the players from the image measuring unit, comparing the game rule information previously stored in the event database, and determining whether there is a matched sporting event; (c) If the determination result of step (b) determines that a specific athletic event has occurred, the coordinate determination server extracts a corresponding frame constituting the athletic event, and combines the extracted frames sequentially to generate an image file. Making; And and (d) attaching a keyword index for describing an athletic event to the image file by a coordinate judging server. The method of claim 8, (e) receiving a keyword from the user by the coordinate determination server; (f) searching and extracting, by the coordinate judging server, whether there is an image file matching the input keyword by searching the keyword index; And (g) providing the extracted image file to the user in step (f); The automatic analysis method of the athletic game of the automatic analysis system of the athletic game further comprising.

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