CN104922889A - Tennis refereeing method and system - Google Patents
Tennis refereeing method and system Download PDFInfo
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- CN104922889A CN104922889A CN201510405400.5A CN201510405400A CN104922889A CN 104922889 A CN104922889 A CN 104922889A CN 201510405400 A CN201510405400 A CN 201510405400A CN 104922889 A CN104922889 A CN 104922889A
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Abstract
The invention belongs to the field of sports goods and provides a tennis refereeing method and system. The tennis refereeing method comprises the steps of (101) setting frequency through a high-speed camera and shooting tennis pictures on a side boundary and (102) conducting projection and comparison on the tennis pictures and judging whether a tennis is out of the boundary or not. The tennis refereeing method and system have the advantage that the out-of-boundary situation is automatically judged.
Description
Technical field
The invention belongs to sports goods field, particularly relate to a kind of tennis umpire method and system.
Background technology
Tennis is a kind of motion very general in the world, judge in existing tennis that the mode of ball whether out-of-bounds is generally manual type, such as by thinking that sideline judge or plate umpire carry out the judgement of tennis out-of-bounds, this kind of mode artificially judged is very easy to erroneous judgement, can change the original sentence to erroneous judgement although existing technical scheme has hawkeye system, but because hawkeye system cost is high, so popularity rate is not high.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of tennis umpire method, is intended to solve the problem of existing technical scheme artificial judgment tennis whether out-of-bounds.
On the one hand, provide a kind of tennis umpire method, described method comprises:
101, tennis photo is taken by high speed camera setpoint frequency in sideline;
102, its whether out-of-bounds of projection contrast judgement are carried out to tennis picture.
Optionally, the implementation method of described 101 is, the picture shot is carried out processing and obtains the position of object to be confirmed in picture, extract the position of object to be confirmed in previous frame picture, calculate the displacement of adjacent two frame object to be confirmed, the interval calculation according to this displacement and consecutive frame goes out the speed of object to be confirmed, as speed exceedes setting threshold value, then confirm as tennis, determine the color-values of this tennis, extract body form close with this color-values in other frames.
Optionally, the implementation method of described 102 is,
The tennis picture of all frames is extracted contrast, tennis picture the highest for ovality is defined as the picture with borderless contact, judges whether this tennis picture is in region, tennis court by the tennis picture of this picture, as being in region, tennis court, then be judged as effectively, otherwise be judged as out-of-bounds.
On the other hand, provide a kind of tennis umpire system, described system comprises:
Shooting unit, for taking tennis photo by high speed camera setpoint frequency in sideline;
Contrast judgement unit, for carrying out its whether out-of-bounds of projection contrast judgement to tennis picture.
Optionally, described shooting unit, the position of object to be confirmed in picture is obtained specifically for being carried out processing by the picture shot, extract the position of object to be confirmed in previous frame picture, calculate the displacement of adjacent two frame object to be confirmed, the interval calculation according to this displacement and consecutive frame goes out the speed of object to be confirmed, as speed exceedes setting threshold value, then confirm as tennis, determine the color-values of this tennis, extract body form close with this color-values in other frames.
Optionally, described contrast judgement unit, specifically for the tennis picture of all frames is extracted contrast, tennis picture the highest for ovality is defined as the picture with borderless contact, judge whether this tennis picture is in region, tennis court by the tennis picture of this picture, as being in region, tennis court, being then judged as effectively, otherwise being judged as out-of-bounds.
In embodiments of the present invention, technical scheme provided by the invention provides a kind of tennis umpire method, the method by arranging the object that high speed camera takes sideline at any time on sideline, thus determine tennis whether out-of-bounds according to the projection of this object, so it has the advantage of automatic decision tennis whether out-of-bounds.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of tennis umpire method provided by the invention;
Fig. 2 is the structure chart of a kind of tennis umpire system provided by the invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The specific embodiment of the invention provides a kind of tennis umpire method, and the method as shown in Figure 1, comprising:
101, tennis photo is taken by high speed camera setpoint frequency in sideline;
102, its whether out-of-bounds of projection contrast judgement are carried out to tennis picture.
Method provided by the invention, by arranging high speed camera shooting tennis picture, can play the advantage of automatic decision tennis whether out-of-bounds like this.
Optionally, the implementation method of above-mentioned 101 can be, the picture shot is carried out processing and obtains the position of object to be confirmed in picture, extract the position of object to be confirmed in previous frame picture, calculate the displacement of adjacent two frame object to be confirmed, the interval calculation according to this displacement and consecutive frame goes out the speed of object to be confirmed, as speed exceedes setting threshold value, then confirm as tennis, determine the color-values of this tennis, extract body form close with this color-values in other frames.
Optionally, the implementation method of above-mentioned 102 can be, the tennis picture of all frames is extracted contrast, tennis picture the highest for ovality is defined as the picture with borderless contact, judge whether this tennis picture is in region, tennis court by the tennis picture of this picture, as being in region, tennis court, being then judged as effectively, otherwise being judged as out-of-bounds.
The specific embodiment of the invention also provides a kind of tennis umpire system, and this system as shown in Figure 2, comprising:
Shooting unit 201, for taking tennis photo by high speed camera setpoint frequency in sideline;
Contrast judgement unit 202, for carrying out its whether out-of-bounds of projection contrast judgement to tennis picture.
Optionally, above-mentioned shooting unit 201, the position of object to be confirmed in picture is obtained specifically for being carried out processing by the picture shot, extract the position of object to be confirmed in previous frame picture, calculate the displacement of adjacent two frame object to be confirmed, the interval calculation according to this displacement and consecutive frame goes out the speed of object to be confirmed, as speed exceedes setting threshold value, then confirm as tennis, determine the color-values of this tennis, extract body form close with this color-values in other frames.
Optionally, above-mentioned contrast judgement unit 202, specifically for the tennis picture of all frames is extracted contrast, tennis picture the highest for ovality is defined as the picture with borderless contact, judge whether this tennis picture is in region, tennis court by the tennis picture of this picture, as being in region, tennis court, being then judged as effectively, otherwise being judged as out-of-bounds.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a tennis umpire method, is characterized in that, described method comprises:
101, tennis photo is taken by high speed camera setpoint frequency in sideline;
102, its whether out-of-bounds of projection contrast judgement are carried out to tennis picture.
2. method according to claim 1, it is characterized in that, the implementation method of described 101 is, the picture shot is carried out processing and obtains the position of object to be confirmed in picture, extract the position of object to be confirmed in previous frame picture, calculate the displacement of adjacent two frame object to be confirmed, interval calculation according to this displacement and consecutive frame goes out the speed of object to be confirmed, as speed exceedes setting threshold value, then confirm as tennis, determine the color-values of this tennis, extract body form close with this color-values in other frames.
3. method according to claim 1, is characterized in that, the implementation method of described 102 is,
The tennis picture of all frames is extracted contrast, tennis picture the highest for ovality is defined as the picture with borderless contact, judges whether this tennis picture is in region, tennis court by the tennis picture of this picture, as being in region, tennis court, then be judged as effectively, otherwise be judged as out-of-bounds.
4. a tennis umpire system, is characterized in that, described system comprises:
Shooting unit, for taking tennis photo by high speed camera setpoint frequency in sideline;
Contrast judgement unit, for carrying out its whether out-of-bounds of projection contrast judgement to tennis picture.
5. system according to claim 4, is characterized in that,
Described shooting unit, the position of object to be confirmed in picture is obtained specifically for being carried out processing by the picture shot, extract the position of object to be confirmed in previous frame picture, calculate the displacement of adjacent two frame object to be confirmed, interval calculation according to this displacement and consecutive frame goes out the speed of object to be confirmed, as speed exceedes setting threshold value, then confirms as tennis, determine the color-values of this tennis, extract body form close with this color-values in other frames.
6. system according to claim 4, is characterized in that,
Described contrast judgement unit, specifically for the tennis picture of all frames is extracted contrast, tennis picture the highest for ovality is defined as the picture with borderless contact, judge whether this tennis picture is in region, tennis court by the tennis picture of this picture, as being in region, tennis court, then be judged as effectively, otherwise be judged as out-of-bounds.
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| CN201510405400.5A CN104922889A (en) | 2015-07-10 | 2015-07-10 | Tennis refereeing method and system |
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| CN201510405400.5A CN104922889A (en) | 2015-07-10 | 2015-07-10 | Tennis refereeing method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017008215A1 (en) * | 2015-07-10 | 2017-01-19 | 张阳 | Tennis judging method and system |
| CN112245889A (en) * | 2020-09-08 | 2021-01-22 | 陈远舟 | Method and system for automatically judging tennis ball out of bounds |
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| CN101067866A (en) * | 2007-06-01 | 2007-11-07 | 哈尔滨工程大学 | Eagle eye technique-based tennis championship simulating device and simulation processing method thereof |
| CN101306247A (en) * | 2008-07-10 | 2008-11-19 | 广州壹鹏电器科技有限公司 | Auxiliary device for judging whether the ball is outside the offline in tennis, badminton game |
| US8199199B1 (en) * | 2007-08-15 | 2012-06-12 | Yuriy Shlyak | Method and system for real time judging boundary lines on tennis court |
| ES2402728T3 (en) * | 2010-11-23 | 2013-05-08 | Fundación Centro De Tecnologías De Interacción Visual Y Comunicaciones Vicomtech | Procedure for detecting the point of impact of a ball in sporting events |
| CN103252073A (en) * | 2013-06-06 | 2013-08-21 | 龚伟明 | Side line judgment system of ball game and judgment method |
| CN103617644A (en) * | 2013-12-03 | 2014-03-05 | 西安电子科技大学 | Badminton side boundary crossing distinguishing method based on machine vision |
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2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101067866A (en) * | 2007-06-01 | 2007-11-07 | 哈尔滨工程大学 | Eagle eye technique-based tennis championship simulating device and simulation processing method thereof |
| US8199199B1 (en) * | 2007-08-15 | 2012-06-12 | Yuriy Shlyak | Method and system for real time judging boundary lines on tennis court |
| CN101306247A (en) * | 2008-07-10 | 2008-11-19 | 广州壹鹏电器科技有限公司 | Auxiliary device for judging whether the ball is outside the offline in tennis, badminton game |
| ES2402728T3 (en) * | 2010-11-23 | 2013-05-08 | Fundación Centro De Tecnologías De Interacción Visual Y Comunicaciones Vicomtech | Procedure for detecting the point of impact of a ball in sporting events |
| CN103252073A (en) * | 2013-06-06 | 2013-08-21 | 龚伟明 | Side line judgment system of ball game and judgment method |
| CN103617644A (en) * | 2013-12-03 | 2014-03-05 | 西安电子科技大学 | Badminton side boundary crossing distinguishing method based on machine vision |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017008215A1 (en) * | 2015-07-10 | 2017-01-19 | 张阳 | Tennis judging method and system |
| CN112245889A (en) * | 2020-09-08 | 2021-01-22 | 陈远舟 | Method and system for automatically judging tennis ball out of bounds |
| CN112245889B (en) * | 2020-09-08 | 2023-12-05 | 陈远舟 | Method and system for automatically judging out-of-bounds tennis |
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Application publication date: 20150923 |
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