KR101807479B1

KR101807479B1 - Baseball game system

Info

Publication number: KR101807479B1
Application number: KR1020160028054A
Authority: KR
Inventors: 장순목
Original assignee: (주)클라우드게이트
Priority date: 2016-03-09
Filing date: 2016-03-09
Publication date: 2017-12-11
Also published as: KR20170105192A

Abstract

The present invention relates to a baseball game system capable of accurately determining whether or not a swing of a baseball bat is performed by a single camera. The baseball game system includes a pitching unit for throwing a ball toward a determination region between the inlays; A photographing unit located on a space between the judgment area and the pitching unit; And a swing judging unit for judging whether or not the baseball bat of the user located at the plate is swung based on the image from the photographing unit; The swing determination unit detects a batting position where the batter is located based on the degree of change of the image and determines whether or not the baseball bat swings based on the trajectory of the detected batting and the end of the baseball bat.

Description

Baseball Game System {BASEBALL GAME SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a baseball game system, and more particularly, to a baseball game system capable of accurately determining whether a baseball bat swings with a single camera.

In a conventional baseball game system, a baseball bat is photographed at various angles using a plurality of cameras to determine whether or not a baseball bat swings in a determination area.

As such, since the conventional baseball game system requires a plurality of cameras, a large cost is required for system implementation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a baseball game system capable of accurately determining whether a baseball bat swings with a single camera.

According to another aspect of the present invention, there is provided a baseball game system including: a pitching unit for throwing a ball toward a determination region between ate stones; A photographing unit located in a space between the judgment area and the pitching unit; And a swing judging unit for judging whether or not the baseball bat of the user located at the plate is swung based on the image from the photographing unit; The swing determination unit detects a batting position where the batter is located based on the degree of change of the image and determines whether or not the baseball bat swings based on the trajectory of the detected batting and the end of the baseball bat.

The swing determining section sets a first vector connecting two temporally adjacent ends, sets a second vector perpendicular to the first vector, Determining whether the number of second vectors among the second vectors passing through the detected batting or passing through the detected batting are in a first reference range; It is determined whether the average length of the second vectors is within a second reference range to determine whether the baseball bat swings.

The swing determination unit determines that the number of the second vectors among the second vectors that pass through the detected batter or pass through the detected batter are located in the first reference range and the average length of the second vectors is within the second reference range It is judged that the baseball bat swings when doing.

The swing determination unit further determines whether the sum of the lengths of the first vectors is located in the third reference range.

The swing determination unit determines that the number of second vectors that are directed to the detected batted stones among the second vectors or pass through the detected batts are located in the first reference range, the average length of the second vectors is located in the second reference range, It is determined that the baseball bat swings when the sum of the lengths of the first vectors is within the third reference range.

The baseball bat further includes an indicia pattern.

The marker pattern is located at the end of the baseball bat.

The marking pattern surrounds the end.

The marker pattern has a lighter color than the baseball bat.

And a position detection unit for detecting the position of the hole in the determination region based on the image from the photographing unit.

And a determination unit that determines the ball and strike based on the determination result from the swing determination unit and the detection result from the position detection unit.

The baseball game system according to the present invention provides the following effects.

First, the baseball game system of the present invention can accurately determine whether or not the baseball bat swings in consideration of the batter position, the swing locus and speed of the baseball bat, and the like.

Second, since the baseball game system of the present invention judges whether the swing is a check swing based on the length of the swing trajectory, it is possible to determine the swing more accurately.

Thirdly, the baseball game system of the present invention includes a baseball bat having a display pattern, so that the locus of the baseball bat can be detected more accurately.

1 is a schematic perspective view of a baseball game system according to an embodiment of the present invention.
2 is a side view of Fig.
3 is a view showing an image photographed by the photographing unit.
4A and 4B are views for explaining the operation of the swing determination unit according to the image of FIG.
5 is a flowchart showing the operation sequence of the swing determination unit in Figs. 4A and 4B.
6 is a view showing a locus of a baseball bat during a check swing.
7 is a perspective view of a baseball bat used in the baseball game system of FIG.
8 is a cross-sectional view taken along II 'of FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Thus, in some embodiments, well known process steps, well known device structures, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention. Like reference numerals refer to like elements throughout the specification.

The terms spatially relative, "below or beneath", "lower", "above", "upper" and the like, And may be used to easily describe the correlation with other elements or components.

In this specification, when a part is connected to another part, it includes not only a direct connection but also a case where the part is electrically connected with another part in between. Further, when a part includes an element, it does not exclude other elements unless specifically stated to the contrary, it may include other elements.

The terms first, second, third, etc. in this specification may be used to describe various components, but such components are not limited by these terms. The terms are used for the purpose of distinguishing one element from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second or third component, and similarly, the second or third component may be alternately named.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Hereinafter, a baseball game system according to the present invention will be described in detail with reference to FIGS. 1 to 8. FIG.

FIG. 1 is a schematic perspective view of a baseball game system according to an embodiment of the present invention, and FIG. 2 is a side view of FIG. 1. FIG.

1 and 2, the baseball game system 100 according to the present invention includes a pitching unit 700, a photographing unit 430, a projector 505, a swing determination unit 677, A second plate 242, and a groove plate 230.

The pitching portion 700 throws the ball 888 toward the determination region 340 located between the first plate 241 and the second plate 242.

The determination area 340 includes a strike zone 333. That is, a part of the determination area 340 is the strike zone 333. The determination region 340 may be located, for example, between the first plate 241 and the second plate 242.

The width of the determination region 340 may be defined as the distance between the first plate 241 and the second plate 242 and the length of the determination region 340 may be defined by the groove plate 230 and a virtual side As shown in FIG. Here, the imaginary side is located higher than the upper side of the strike zone 333.

The pitching unit 700 includes a screen 780 and a pitching machine 760.

The screen 780 is positioned between the determination region 340 and the pitching machine 760. The screen 780 displays the image projected from the projector 505. The image is displayed on the display surface of the screen 780. As shown in FIG. 2, the screen 780 includes at least one hole 768.

The pitching machine 760 is located behind the screen 780. That is, the pitching machine 760 is located opposite the display surface of the screen 780. Pitching machine 760 throws ball 888. The ball 800 projected from the pitching machine 760 passes through the hole 768 of the screen 780 and proceeds toward the determination region 340.

The photographing unit 430 detects the moment when the hole 888 from the pitching unit 700 enters the sensing area 805 and starts photographing. For example, the shooting section 460 may be configured to track all moving objects including ball 888, batter 608, and baseball bat 777 from the moment ball 888 enters sensing area 805 ). For this, the photographing unit 430 can continuously photograph at a rate of several tens to several hundred frames per second from the moment when the blank 888 enters the sensing area 805. The photographing unit 430 may include a high-speed camera.

The photographing unit 430 is located at an upper portion of the judgment area 340. [ At this time, as shown in Fig. 2, the photographing unit 430 may be located in a diagonal direction thereof not directly above the determination region 340. [ For example, the photographing section 430 may be located on the space between the determination region 340 and the pitching section 700. [

The swing judging unit 677 judges whether the baseball bat 777 swings based on the photographed image from the photographing unit 430. The image provided from the photographing unit 430 includes a plurality of frame images. The swing determination unit 677 can detect the degree of change in a specific portion of the image based on the plurality of frame images. For example, the swing determination unit 677 detects a batting position where the batter 608 is located based on the degree of change of the image, and based on the trajectory of the detected batting and the end of the baseball bat 777, ) Is swung. For this purpose, the swing judging unit 677 binarizes each frame image from the photographing unit 430 on the basis of the photographing illuminance thereof, for example, to generate a black-white image (E.g., the batter 608 and the baseball bat 777) in the image by scanning the black-and-white image in the up-and-down and left-and-right directions (Each contour of the object 777), the center position of the subject is determined from the contour, and the position of the subject can be detected based on the center position. Further, the swing determining unit 677 can detect the movement and the moving direction of the subject from the change of the center position of the subject, and from this, the degree of change of the image can be calculated.

3 is a view showing an image photographed by the photographing section 430. As shown in FIG. The strike zone 300 in FIG. 3 is an image of the strike zone 333 in FIG. 1 described above, and the first batting 221 in FIG. 3 is the image of the first batting 241 in FIG. 3, the second plate 222 in FIG. 3 is the image of the second plate 242 in FIG. 1 described above, the blank 800 in FIG. 3 is the image of the blank 888 in FIG. 1, The batter 618 in FIG. 3 is the image of the batter 608 in FIG. 1, and the baseball bat 321 in FIG. 3 is the image of the baseball bat 777 in FIG. 1

The swing determination unit 677 sets the strike zone 300 based on the image photographed by the photographing unit 430. [ For example, the strike zone 300 can be defined as an area surrounded by four sides S1, S2, S3, and S4.

The lower side S1 faces the upper side S2, and the left side S3 faces the right side S4. The lower side S1 and the upper side S2 may be arranged in parallel.

The shooting unit 430 photographs the strike zone 300 in a diagonal direction thereof rather than directly above the strike zone 300. The strike zone 300 is formed in a trapezoidal shape such that the perspective phenomenon according to the shooting angle is reflected Respectively. For example, the strike zone 300 may have a trapezoidal shape as shown in FIG. Since the upper side S2 of the strike zone 300 is positioned relatively closer to the photographing portion 430 than the lower side S1 thereof, the upper side S2 has a longer length than the lower side S1.

The ball 800 in the image due to the perspective phenomenon has a larger size as it gets closer to the photographing unit 430. That is, the size of the hole 800 in the image indicates how high the hole 800 is from the ground (or the groove plate 230). In other words, the vertical position of the blank 800 can be grasped from the size of the blank 800 in the image.

When the baseball bat 321 is swung by the batter 618, a swing locus having a shape of a curve (for example, an arch) as shown in FIG. 3 is formed.

The operation of the swing determination unit 677 will be described in detail based on the image shown in FIG.

FIGS. 4A and 4B are views for explaining the operation of the swing determination unit according to the image of FIG. 3, and FIG. 5 is a flowchart illustrating an operation sequence of the swing determination unit in FIGS. 4A and 4B. 4A and 4B, for convenience of explanation, the first plate 221 and the second plate 222 are omitted.

First, the swing determination unit 677 searches for a battle where the batter 618 is located based on the image of FIG. 3 (501). In the image shown in FIG. 3, the degree of change of the image on the first plate 221 is larger than that of the second plate 222. This is because the batter 618 is located at the first plate 221. Based on the difference in degree of change of the image, the swing determination unit 677 determines which batting position the batter 618 is positioned. That is, since the degree of the image change in the first plate 221 is larger than the degree of the image change in the second plate 222, the swing determination unit 677 determines that the batter 618 is in the first plate 221 . Accordingly, the swing judging unit 677 detects the first plate 221.

4A, the swing determination unit 677 sets a first vector V1 connecting the two temporally adjacent ends 322 (ends of the baseball bat) (502). For example, as shown in FIG. 4A, when the fourteen ends 322 form a single swing trajectory, thirteen first vectors V1 connecting the two adjacent ends 322 are set.

The length of the first vector (V1) is proportional to the distance between adjacent ends (322). The direction of the first vector (V1) is directed towards the end 322, which is then taken at the relatively earlier taken end 322. For example, as shown in FIG. 4A, when an n-1-th captured image (hereinafter referred to as an n-1-th captured image) and an n-th captured image (hereinafter referred to as an n-th captured image) The first vector (V1) connecting the n-1 < th > end and the n < th > end has a point from the (n-1)

Next, as shown in FIG. 4B, the swing determination unit 677 sets a second vector V2 extending from the center point of the first vector V1 perpendicular to the first vector V1 (503 ). At this time, the swing determination unit 677 can set the extension direction of the second vector V2 based on the shape of the curve forming the swing trajectory. For example, the swing determination unit 677 may set a line segment connecting the first end and the last end, and may extend the second vector V2 in a direction intersecting the line segment. As another example, the swing determination unit 677 may extend the second vector V2 in the concave direction from the convex surface of the curve.

The swing determination unit 677 determines whether the number of the second vectors V2 that are directed to the detected ine out 221 among the second vectors V2 or that pass through the detected ineath 221 is within a first reference range Is located.

Then, the swing determination unit 677 determines whether the average length of the second vectors V2 is located in the second reference range. The length of the second vector V2 is related to the speed of the end 322 of the baseball bat, and the longer the length of the second vector V2, the faster the speed of the end 322.

The swing judging unit 677 judges whether the baseball bat 777 swings based on these two judgments (504). For example, the number of second vectors (V2) facing the detected ine out 221 of the second vector (V2) or passing through the detected batter (221) is located in the first reference range, When the average length of the vector V2 is in the second reference range, the swing determining unit 677 determines that the baseball bat 321 is swung.

If the number of the second vectors V2 that are directed to the detected batter 221 among the second vectors V2 or pass through the detected batter 221 is out of the first reference range, The swing determination unit 677 determines the end portions 322 forming such a trajectory as noise when the average length of the trajectories V2 is out of the second reference range. That is, in this case, the swing determination unit 677 determines that the baseball bat 321 is not swung.

The swing determination unit 677 determines whether the baseball bat 777 swings based on the trajectory and the velocity of the end portions 322. [

Meanwhile, the swing determination unit 677 may further determine the length of the first vectors V1 to check swing. For example, the swing determination unit 677 can further determine whether the sum of the lengths of the first vectors V1 is located in the third reference range. In such a case, the number of the second vectors V2 that are directed to the detected ine out 221 of the second vectors V2 or that pass through the detected inbounds 221 are located in the first reference range, The swing determination unit 677 determines that the baseball bat 321 is swinging when the average length of the baseballs V2 is in the second reference range and the sum of the lengths of the first vectors V1 is in the third reference range .

The first and second vectors V1 and V2 in FIGS. 3, 4A, and 4B have the characteristics corresponding to the first to third reference ranges described above. In such a case, the swing determination unit 677 determines It is determined that the baseball bat 321 has swung.

6 is a view showing a locus of a baseball bat during a check swing.

As shown in FIG. 6, when the baseball bat 321 does not swing properly, the swing determination unit 677 determines that the baseball bat 321 is a check swing. That is, the swing determination unit 677 does not determine the swing.

The sum of the lengths of the first vectors V1 in Fig. 6 is out of the third reference range. For example, when the sum of the lengths of the first vectors V1 is smaller than a predetermined threshold value, the swing determination unit 677 can determine the swing determination.

FIG. 7 is a perspective view of a baseball bat used in the baseball game system of FIG. 1, and FIG. 8 is a sectional view taken along line I-I of FIG.

To minimize the effect of noise, the baseball bat 777 may further include a landmark pattern 788, as shown in FIGS. 7 and 8.

The landmark pattern 788 may be located at the end of the baseball bat 777, as shown in FIG.

8, the marking pattern 788 may have a shape that surrounds the end of the baseball bat 777. As shown in FIG.

The marking pattern 788 may have a bright color so that the end of the baseball bat 777 may be clearly displayed in the black-and-white image generation described above. For example, the display pattern 788 may have a lighter color than the baseball bat 777.

Meanwhile, although not shown, the baseball game system according to the present invention may further include a position detection unit and a determination unit.

The position detection unit detects the position of the hole in the determination region based on the image from the photographing unit.

The determination unit determines the ball and the strike based on the determination result from the swing determination unit and the detection result from the position detection unit.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents. Will be clear to those who have knowledge of.

221: first inning 222: second inning
322: the end of the baseball bat 618: the batter
V1: first vector V2: second vector

Claims

A pitching part for throwing a ball toward a judgment area between the atmospheres;
A photographing unit located in a space between the determination area and the pitching unit;
And a swing judging unit for judging whether or not the baseball bat of the user located at the plate is swung based on the image from the photographing unit;
The swing determining unit may determine,
Detecting a batting position where the batter is located based on the degree of change of the image, determining whether the baseball bat swings based on the detected trajectory of the batting base and the baseball bat;
The swing determining unit may determine,
Setting a first vector connecting two temporally adjacent ends, setting a second vector perpendicular to the first vector;
Determining whether the number of second vectors of the second vectors that are directed to the detected batts is within a first reference range;
Determining whether the average length of the second vectors is within a second reference range, and determining whether the baseball bat swings.

delete

The method according to claim 1,
The swing determining unit may determine,
Determining that the baseball bat has swung when the number of second vectors of the second vectors directed to the detected batts is within a first reference range and the average length of the second vectors is within a second reference range Baseball game system.

The method according to claim 1,
Wherein the swing determination unit further determines whether the sum of the lengths of the first vectors is within a third reference range.

5. The method of claim 4,
The swing determining unit may determine,
The number of second vectors directed to the detected at least one of the second vectors is located in a first reference range, an average length of the second vectors is located in a second reference range, 3 < / RTI > reference range, the baseball game system determines that the baseball bat swings.

The method according to claim 1,
Wherein the baseball bat further comprises an indicia pattern.

The method according to claim 6,
Wherein the marker pattern is located at an end of the baseball bat.

8. The method of claim 7,
Wherein the marking pattern surrounds the end.

The method according to claim 6,
Wherein the marker pattern has a lighter color than the baseball bat.

The method according to claim 1,
And a position detection unit for detecting a position of the ball in the determination area based on the image from the photographing unit.

11. The method of claim 10,
And a determination unit for determining a ball and a strike based on a determination result from the swing determination unit and a detection result from the position detection unit.