KR102108675B1 - Method and apparatus of distinguish between strike and ball using smart device - Google Patents

Abstract

The present invention relates to a method for calling a strike using a smart device and, more specifically, to a method for using a smart device including a camera to calling a strike in a baseball game. According to the present invention, the method comprises the following steps of: using the camera to acquire an image capturing a catcher′s mitt; recognizing an object region corresponding to the catcher′s mitt from the image; generating a strike zone region with respect to at least one pixel included in the object region; generating a ready signal when the strike zone region is generated; recognizing a ball in a preset first region at a first time after the ready signal is generated; recognizing the ball again in a preset second region at a second time after the first time, wherein the object region corresponding to the catcher′s mitt is recognized again from the image captured after the first time when the ball is not recognized as a re-recognition result; and comparing the object region corresponding to the re-recognized catcher′s mitt with the strike zone region to call a strike. Accordingly, a strike call is performed by using the smart device, such that an umpire is replaced, thereby reducing an umpire invitation expense. Moreover, a consistent strike zone is formed, such that a strike call dispute is reduced, thereby smoothly advancing progress of the baseball game.

Description

Method and apparatus for determining the strike of a baseball using a smart device {Method and apparatus of distinguish between strike and ball using smart device}

The present invention relates to a method and apparatus for determining a strike of a baseball, which enables a strike to be determined based on a catcher's glove using a smart device.

Baseball's popularity has continued to rise as 35 years have passed since professional baseball was launched. As an international convention, baseball was adopted as the official sport for the World Baseball Classic and at one time the Olympics, which further fanned the popularity of baseball.

In the middle of 2010, based on the social baseball community, the number of registered baseball players has exceeded 500,000, and the number of registered baseball players has increased. According to Liguro 1 ~ 4, baseball as a member of society was organized.

In order to participate in a baseball game for a member of a society, he or she must join the team, pay the subscription fee, and purchase equipment such as gloves, baseball shoes, bats, and helmets.

In addition, in addition to the above-mentioned cost of equipment purchase and the like, the cost of recruiting the stadium and the referee is incurred for the progress of the baseball game of the society.

In addition, even if the referee was invited, strike and ball judgments were often inconsistent, and there were often disputes.

Republic of Korea Patent Publication No. 10-2010-0088112, 2010.08.06.

The present invention was invented to solve the above problems, and an object of the present invention is to provide a method for determining a strike of a baseball using a smart device that enables a consistent strike determination using a smart device in a baseball game.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood from the following description.

The method for determining a strike of a baseball using a smart device according to the present invention for achieving the above object is for determining a strike of a baseball game using a smart device equipped with a camera. Obtaining a captured image, recognizing an object region corresponding to a glove from the image, generating a strike zone region based on at least one pixel belonging to the object region, and the strike zone region Generating a preparation signal, generating a preparation signal, and recognizing a ball in a first area preset at a first time after the preparation signal is generated, and a second preset at a second time after the first time. If the ball is re-recognized in the area, but the ball is not recognized as a result of re-recognition, the ball taken after the first time And re-recognizing the object area corresponding to the glove from the unknown and determining the strike based on comparing the strike zone area with the object area corresponding to the re-recognized glove.

The generating of the strike zone area may include setting at least one pixel belonging to the object area as a reference, and a plurality of pixels belonging to a predetermined distance on the screen based on the set one pixel as a strike zone area. It characterized in that it comprises a step of setting.

The generating of the strike zone area may include calculating a center point formed between at least two pixels belonging to the object area, and generating a rectangular area of a predetermined size based on the center point as a strike zone area. It is characterized by including.

The generating of the strike zone area may include setting at least one pixel belonging to the object area as a reference, and generating a rectangular area of a preset size based on the set one pixel as a strike zone area. It is characterized by including.

The strike determining step determines whether the catcher's glove is located within the strike zone area based on a ratio of comparing the recognized glove object area and the strike zone area to the glove object area. It characterized in that it comprises a step of determining.

The strike determination method of baseball using the smart device according to the present invention according to the above-described configuration can expect the following effects.

First, it is possible to save referee referral costs by replacing the referee by making a strike decision using a smart device.

In addition, by forming a consistent strike zone, there is an advantage in that the strike determination time is reduced and the progress of the game can be smooth.

1 is a view for explaining a state in which the smart device of the present invention is installed in a baseball game.
2 is a flow chart showing a baseball strike determination method using the smart device of the present invention.
3 is an enlarged view of the strike zone area according to the first embodiment of creating the strike zone area of the present invention.
4 is an enlarged view of a strike zone area according to a second embodiment of creating a strike zone area of the present invention.
5 is an enlarged view of a strike zone area according to a third embodiment of creating a strike zone area of the present invention.
6 is an enlarged view of a strike zone area for explaining the strike determination method of the present invention.
7 is a reference view showing a baseball strike determination method using the smart device of the present invention.
8 is a block diagram showing the configuration of a baseball strike determination apparatus using the smart device of the present invention.

The present invention is characterized in that it is possible to make a consistent strike determination by determining the strike based on the catcher's glove using a smart device equipped with a camera, so that the problem of the strike determination in a baseball game can be solved.

In particular, a strike zone is formed based on the point at which the strike zone is formed based on the catcher's glove, the ball thrown by the pitcher is photographed in a predetermined space between the pitcher and the catcher, and the ball reaches and disappears from the catcher's glove. It is to be able to make a strike decision when it is located inside.

1 is a view for explaining a state in which a smart device of the present invention is installed in a baseball game, FIG. 2 is a flow chart showing a method for determining a strike of a baseball using the smart device of the present invention, and FIG. 3 is a strike zone area of the present invention Fig. 4 is an enlarged view of the strike zone area according to the first embodiment, and Fig. 4 is an enlarged view of the strike zone area according to the second embodiment for generating the strike zone area of the present invention, and Fig. 5 is the strike zone of the present invention. An enlarged view of a strike zone area according to a third embodiment of generating a zone area, FIG. 6 is an enlarged view of a strike zone area for explaining the strike determination method of the present invention, and FIG. 7 is a view using a smart device of the present invention It is a reference diagram showing a method for determining a strike of baseball, and FIG. 8 is a baseball strike using the smart device of the present invention. It is a block diagram showing the configuration of the determination device.

Hereinafter, a method of determining a strike of a baseball using a smart device according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, the present invention may acquire an image through the image acquisition unit 100 by photographing a catcher's glove 20 using a camera installed in the smart device 10 (S100).

On the other hand, before capturing the image by capturing the glove 20 of the catcher using the camera in step S100, the catcher needs a prior appointment to place the glove 20 on the top of the home plate 30. The height of the catcher's glove 20 is preferably between the elbow and knee of the batter or the height of the catcher's chest.

The next step is to recognize the object region corresponding to the glove 20 in the object region recognition unit 200 from the image obtained through the step S100 (S200), wherein the object region is the edge of the glove 20 The region processing may proceed by detecting.

Recognizing the object area of the catcher's glove 20 through the step S200, the strike zone area generation unit 300 generates a strike zone area S based on at least one pixel belonging to the object area. It is included (S300).

In this case, an embodiment in which the strike zone region generating unit 300 generates the strike zone region S based on the pixels of the step S300 will be described below.

Referring to FIG. 3, a step of setting based on at least one pixel (P) belonging to the object area and a plurality of pixels belonging to a predetermined distance on the screen based on the set one pixel (P) in a strike zone It may be implemented through the step of setting the area S. In this case, the set pixel P may be set to a pixel located in the middle of the outermost pixels among the pixels in the object area. In addition, the predetermined distance on the screen is preferably the upper and lower distances and the left and right distances are more than the distance including the catcher glove 20.

Referring to FIG. 4, calculating a center point C formed between at least two pixels P1 and P2 belonging to the object area, and striking a rectangular area having a predetermined size based on the center point C It can be implemented through the step of generating into the zone region S. That is, the strike zone region S may be generated using the center point C as the center of a rectangular region having a predetermined size. At this time, it is preferable to set the rectangular area to be larger than the area including the catcher glove 20. Further, the two pixels P1 and P2 designate one pixel P1 on the upper or lower, left or right side based on the horizontal and vertical centers of the object area, and the other pixel P2 on the opposite position. It is possible to specify). For example, when one pixel P1 is designated on the left side while being on the upper side, it is possible to set the other pixel P2 on the opposite side of the lower side and the right side.

Referring to FIG. 5, it is possible to implement a step of generating a rectangular area of a predetermined size based on at least one pixel P belonging to the object area as a strike zone area S. In this case, the pixel P may be a pixel at an intermediate point, and the rectangular area is at least as wide as it may include the catcher's glove 20, and is preferably made of a rectangular or square shape.

Next, when the strike zone area S is generated through the step S300, the preparation signal generation unit 400 includes a step of generating a preparation signal (S400).

The preparation signal of step S400 may be output and displayed in various ways, such as flashing a color such as red or blue or generating a beep on the display of the smart device 10.

Although, according to the foregoing, when the strike zone area S is generated, a ready signal is generated in the smart device 10, but when the strike zone area S is generated, the smart device 10 such as voice or motion is externally generated. It is also possible to provide a signal that can be recognized so that the camera reaches the preparation stage for taking an image.

As described above, the preparation signal is generated from the smart device 10, or the pitcher's pitching proceeds after the preparation signal is provided to the smart device 10 through an action such as voice or motion so that the camera proceeds to shoot. It can be done.

When the preparation signal of the step S400 occurs, the step of recognizing the ball in the first area preset at the first time may be performed by the ball recognition unit 500 (S500).

The first time in step S500 represents each time until the ball pitched by the pitcher enters the predetermined first area and advances, in a state where a certain distance is specified in the space between the pitcher and the catcher in advance. . At this time, the preset first area at the first time is pitched from a distance of about 3 m to 4 m in the direction of the pitcher plate 40 to the home plate 30 among the distances from the pitcher plate 40 to the home plate 30. It is preferable to set the distance between the plate 40 and the home plate 30 to the middle.

After the first time in step S500, the ball recognition unit 500 re-recognizes the ball in the second area preset at the second time, but if the ball is not recognized as a result of re-recognition, a glove from the image taken after the first time ( 20) Re-recognizing the object area corresponding to the step (S600).

The second time of the step S600 is a time from the first area that can recognize the first time to the second area from the catcher in advance, and the time before the ball enters and advances into the determined second area. And images of the first time and the second time are performed through the image acquisition unit 100. At this time, it is preferable to set the preset second area at the second time to the catcher after the preset first area at the first time, that is, from the intermediate point of the pitcher plate 40 and the home plate 30 to the catcher.

In addition, the object area corresponding to the catcher's glove 20 is re-recognized at the point at which the ball entering the preset second area at the second time disappears, that is, the ball reaches and disappears at the catcher's glove 20. .

Next, the strike determination is finally made through the step of determining the strike in the determination unit 700 based on the comparison of the object area corresponding to the re-recognized glove 20 in step S600 and the strike zone area S ( S700).

That is, the strike zone area S is determined by recognizing the catcher's glove 20 catching the pitched ball in step S700 by determining the strike zone area S through recognition of the catcher's glove 20 in step S100. Strike determination can be performed by confirming the position of the middle glove 20.

The determination unit 700, if it is determined that the ball is not re-recognized at the second time through the ball recognition unit 500, from the image taken by the image acquisition unit 100 at the second time Strike may be determined based on the comparison of the object zone re-recognized by the object zone recognition unit and the strike zone zone.

On the other hand, in the case where the pitched ball disappears as the catcher catches the ball, if it is determined whether it is located in the strike zone area S based on the glove 20 rather than the ball, the screen corresponding to the glove 20 It occurs when the object region of the image partially deviates from the strike zone region (S).

Therefore, in the embodiment of the present invention, the catcher's glove 20 is based on the ratio of comparing the recognized glove 20 object area and the strike zone area S according to the intersection of the glove 20 object area. ) May be determined to be positioned inside the strike zone area S (S700).

At this time, the strike determination according to the ratio included in the strike zone area S among the pixels included in the object area of the recognized glove 20 is set to a high or low ratio according to the purpose or nature of the baseball game. It is possible.

For example, when the strike zone area S of the pixels included in the object area includes 30% or more, a strike determination may be made.

As described above, as shown in FIG. 6, even if a part of the object area on the screen corresponding to the glove 20 is outside the strike zone area S, it is possible to determine the strike based on the ratio of the object area and the strike zone area. Do.

Alternatively, as illustrated in FIG. 6A, the object area of the glove 20 in step S600 is re-recognized to set the intermediate value between the outermost pixels of the top, bottom, left, and right of the recognized object area as a reference point D, and FIG. As shown in the figure, by positioning a predetermined ball area centered on the reference point (D), it is possible to make a strike determination when the ball area partially overlaps or is located inside the strike zone area (S).

The ball area may be displayed through the display unit 600 to visually check the point where the ball zone is located in the strike zone area S on the smart device 10, through which the user visually checks whether the strike is It may be possible.

As described above, the present invention makes it possible to perform the strike determination in a baseball game simply using a smart device, creates a strike zone area based on the catcher's glove, and determines the strike against the catcher's glove position when the ball disappears. To provide a clear standard.

The above-described embodiments are merely exemplary, and those skilled in the art can variously modify various embodiments therefrom.

Therefore, the true technical protection scope of the present invention should include other embodiments variously modified as well as the above embodiments by the technical spirit of the invention described in the following claims.

10: smart device
20: gloves
30: home plate
40: Helmet
P, P1, P2: Pixel
C, D: Center point
S: Strike zone area
100: image acquisition unit
200: object area recognition unit
300: strike zone area generating unit
400: preparation signal generator
500: ball recognition unit
600: display unit
700: judgment unit

Claims (5)

To determine the strike of a baseball game using a smart device equipped with a camera,
Obtaining an image of a catcher's glove using a camera;
Recognizing an object region corresponding to a glove from the image;
Generating a strike zone area based on at least one pixel belonging to the object area;
Generating a ready signal when the strike zone region is generated;
After the preparation signal is generated, recognizing a ball at a first time;
Re-recognizing the ball at the second time after the first time, but recognizing the object area corresponding to the glove from the image taken after the first time if the ball is not recognized as a result of the recognition;
And determining a strike based on comparing the strike zone area with the object area corresponding to the re-recognized glove.
The step of determining the strike
Determine whether the re-recognized glove is located in the strike zone area based on the ratio of the area of the object zone corresponding to the re-recognized glove and the area of the object that corresponds to the re-recognized glove, and re-recognize the re-recognition Strike determination method of a baseball using a smart device, characterized in that the strike is determined according to whether the glove is located in the strike zone area. According to claim 1,
The step of generating the strike zone area,
Setting based on at least one pixel belonging to the object area;
And setting a plurality of pixels that fall within a predetermined distance on the screen based on the set one pixel as a strike zone area. According to claim 1,
The step of generating the strike zone area,
Calculating a center point formed between at least two pixels belonging to the object area;
And generating a rectangular zone having a predetermined size based on the center point as a strike zone area. According to claim 1,
The step of generating the strike zone area,
Setting based on at least one pixel belonging to the object area;
A method of determining a strike of a baseball using a smart device, comprising: generating a square area of a predetermined size based on the set one pixel as a strike zone area. To determine the strike of a baseball game using a smart device,
An image acquisition unit that acquires an image including a catcher's glove;
An object region recognition unit recognizing an object region corresponding to a glove from the image;
A strike zone area generating unit generating a strike zone area based on at least one pixel belonging to the object area;
A preparation signal generation unit generating a preparation signal when the strike zone area is generated;
A ball recognition unit recognizing a ball from the image at a first time after the preparation signal is generated and re-recognizing the ball from the image at a second time after the first time;
If it is determined through the ball recognition unit that the ball is not recognized at the second time, the object area and the strike zone area re-recognized by the object area recognition unit from the image photographed by the image acquisition unit at the second time Includes a determination unit for determining the strike based on comparing the
The determination unit
Determine whether the re-recognized glove is located in the strike zone area based on the ratio of the area of the object zone corresponding to the re-recognized glove and the area overlapping the strike zone area in the object area corresponding to the re-recognized glove, and re-recognize The strike according to whether the glove is located within the strike zone area
Baseball strike determination device using a smart device characterized in that.

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