CN111288972A - Arrow motion parameter measurement system and method applied to virtual archery system - Google Patents
Arrow motion parameter measurement system and method applied to virtual archery system Download PDFInfo
- Publication number
- CN111288972A CN111288972A CN202010117425.6A CN202010117425A CN111288972A CN 111288972 A CN111288972 A CN 111288972A CN 202010117425 A CN202010117425 A CN 202010117425A CN 111288972 A CN111288972 A CN 111288972A
- Authority
- CN
- China
- Prior art keywords
- arrow
- motion
- unit
- image acquisition
- measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005259 measurement Methods 0.000 title claims description 14
- 238000012545 processing Methods 0.000 claims abstract description 38
- 238000007781 pre-processing Methods 0.000 claims abstract description 15
- 230000010365 information processing Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
- G01C11/04—Interpretation of pictures
-
- G06T5/70—
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/20—Analysis of motion
- G06T7/254—Analysis of motion involving subtraction of images
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10004—Still image; Photographic image
Abstract
The invention discloses an arrow motion parameter measuring system applied to a virtual archery system, which comprises: the image acquisition units are used for acquiring real-time motion image information in the arrow motion process; the system comprises a preprocessing unit, a data processing unit and a data processing unit, wherein the preprocessing unit preprocesses real-time motion image information acquired by an image acquisition unit to remove noise and obtain preprocessed motion image data; and the data processing unit is used for carrying out data processing on the preprocessed moving image data to obtain an initial motion parameter when the arrow leaves the bow and an end motion parameter when the arrow contacts the curtain. The motion parameter measuring system does not need to install a sensor, so that the cost is greatly reduced, and the problems of accumulative error and inaccurate measuring result of the measuring result caused by the defects of drift and the like of the sensor are solved. The method can be widely applied to the field of virtual archery.
Description
Technical Field
The invention relates to the field of virtual archery, in particular to an arrow motion parameter measuring system and method applied to a virtual archery system.
Background
Sports intelligence, virtualization, and other systems of equipment such as indoor virtual golf, virtual archery, and the like have become common. The virtualization of archery sports is that after a player shoots an actual physical bow and arrow, a computer can combine initial physical motion parameters (initial speed, physical space position and attitude angle) when the arrow is shot, air damping, earth gravity and other data and a physical formula to simulate the flight trajectory of the arrow in a virtual 3D world. Accurate measurement of the kinetic parameters of the ejected arrow is then critical. The accuracy of the measurement determines the scientificity of the simulated arrow flight trajectory.
At present, the technical scheme used by a motion parameter measuring system of an arrow is mainly that an IMU sensor measuring unit is integrated on the arrow by modifying the manufacturing of the arrow, and after the motion parameter of the arrow is measured by the sensor, the measured data is sent to an arithmetic processing unit for processing through wireless communication. The disadvantages of this solution are mainly two-fold:
the IMU measuring unit has accumulated errors of measuring results due to the defects of drift and the like of the sensor, and the measuring results are inaccurate. And calibration needs to be done periodically, and the experience is very poor.
An integrated circuit board needs to be embedded in the arrow, manufacturing cost is high, the arrow embedded in the measuring unit needs to be used for working, the common arrow is not suitable, and the measuring system does not have universality.
Disclosure of Invention
In view of the above-mentioned disadvantages of the prior art motion parameter measurement system for an arrow, it is an object of the present invention to provide a motion parameter measurement system for an arrow used in a virtual archery system, wherein the arrow is projected while passing through an exit bow, an entrance arrow area, an entrance screen area and a contact screen, in this order, the motion parameter measurement system comprising:
the data processing unit is used for acquiring real-time motion image information in the arrow motion process;
the preprocessing unit is connected with the image acquisition unit and used for preprocessing the real-time motion image information acquired by the image acquisition unit so as to remove noise and obtain preprocessed motion image data;
and the data processing unit is used for carrying out data processing on the preprocessed moving image data to obtain an initial motion parameter when the arrow leaves the bow and an end motion parameter when the arrow contacts the curtain.
According to an embodiment of the present invention, the system for measuring motion parameters of an arrow applied to a virtual archery system further includes a matching determination unit, which determines whether the arrow is successfully ejected, so as to generate a determination result.
According to an embodiment of the present invention, the system for measuring motion parameters of an arrow applied to a virtual archery system further includes a control unit, which is connected to the matching determination unit and the data processing unit, and if the determination result generated by the matching determination unit indicates that the arrow is successfully ejected, the control unit controls the preprocessing unit to preprocess the real-time motion image data acquired by the image acquisition unit.
According to an embodiment of the invention, the motion parameter measurement system of the arrow applied to the virtual archery system comprises the motion image data including spatial position information, spatial attitude and velocity value.
According to an embodiment of the invention, in the system for measuring the motion parameters of the arrow applied to the virtual archery system, the data processing unit comprises a spatial position information processing module, a spatial attitude processing module and a velocity value processing module.
According to an embodiment of the invention, in the arrow motion parameter measurement system applied to the virtual archery system, the number of the image acquisition units is 2.
According to an embodiment of the invention, in the motion parameter measurement system of the arrow applied to the virtual archery system, the spatial position information processing module calculates spatial position information of the arrow at the shooting moment according to the position coordinates of the two image acquisition units and the parallax of the arrow in the same scene shot by the two image acquisition units at the same time;
the space attitude processing module is used for acquiring a disparity map according to two viewpoint images in the same scene shot by the two image acquisition units at the same time, and obtaining the shooting instant space attitude of the arrow through three-dimensional reconstruction;
the speed value processing module selects a certain moving point on the arrow as a detection object, and obtains the moving displacement of the moving point in a certain time difference through image frame difference so as to calculate the shooting instant speed value.
The invention also provides a method for measuring the motion parameters of the arrow applied to the virtual archery system, which comprises the following steps:
1) acquiring real-time motion image information in the motion process of a target arrow;
2) preprocessing the real-time motion image information to remove noise and obtain preprocessed real-time motion image information;
3) and performing data processing on the processed real-time motion image information to obtain an initial motion parameter when the arrow leaves the bow and an ending motion parameter when the arrow contacts the curtain.
According to an embodiment of the invention, in the method for measuring the motion parameters of the arrow applied to the virtual archery system, the following steps are further included after the step 1):
and judging whether the arrow is successfully ejected or not, and if so, continuing the step 2).
The invention has the following beneficial effects: the motion parameter measuring system does not need to install a sensor, so that the cost is greatly reduced, and the problems of accumulative error and inaccurate measuring result of the measuring result caused by the defects of drift and the like of the sensor are solved. The system of the invention does not need to carry out periodical calibration, is simple and convenient and has universality.
Drawings
FIG. 1 is a schematic structural diagram of arrow motion parameter measurement applied to a virtual archery system according to an embodiment of the present invention.
Fig. 2 is a schematic view of the arrangement of the archery area and the front curtain area in the above embodiment.
FIG. 3 is a flow chart of a method for measuring movement parameters of an arrow applied to the virtual archery system in the above embodiment.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to the accompanying drawings 1-3 of the specification, a motion parameter measurement system for an arrow of a virtual archery system according to a preferred embodiment of the present invention, wherein the arrow passes through an arrow leaving bow area, an arrow leaving bow event occurring in an arrow shooting area, an arrow entering in a front curtain area and an arrow contacting curtain event occurring in a curtain contacting area in sequence during shooting, and a single arrow leaving and curtain contacting process is a normal archery process, comprises: at least two image acquisition units 1, a preprocessing unit 2, a matching judgment unit 3, a control unit 4 and a data processing unit 5. The image acquisition unit 1 is connected to the preprocessing unit 2, the data processing unit 3 is connected to the preprocessing unit 2, and the control unit 4 is connected to the matching judgment unit 3 and the data processing unit 5.
The image acquisition unit 1 acquires real-time motion image information in the arrow motion process; the matching judgment unit 3 judges whether the arrow is successfully ejected or not, and generates a judgment result. If the judgment result generated by the matching judgment unit 3 is that the arrow is successfully ejected, the control unit 4 controls the preprocessing unit 2 to preprocess the real-time moving image data acquired by the image acquisition unit 1 so as to remove noise and obtain preprocessed moving image data; and then the data processing unit 3 performs data processing on the preprocessed moving image data to obtain an initial motion parameter when the arrow leaves the bow and an end motion parameter when the arrow contacts the curtain. If the judgment result generated by the matching judgment unit 3 is that the arrow is not successfully ejected, no measure is subsequently taken.
Wherein the archery field area comprises an archery area used for standing archers and carrying out archery operation and a screen front area in front of the curtain.
Specifically, the number of the image capturing units 1 is not particularly limited, and may be 2 or more than 2, and the number of the image capturing units 1 is 2 as described below. Two image acquisition unit 1 is high-speed camera A and high-speed camera B respectively, and the two separately sets up, all is located archery region top, for example high-speed camera A is directly over the archery region, and high-speed camera B is located the upper right side in archery region, makes a video recording to the archery region simultaneously.
Specifically, the data processing unit 5 includes a spatial position information processing module 51, a spatial attitude processing module 52, and a velocity value processing module 53.
Specifically, the data processing unit 3 performs data processing on the preprocessed moving image data, specifically:
the spatial position information processing module 51 calculates spatial position information of the arrow at the moment of shooting according to the position coordinates of the two image acquisition units 1 and the parallax of the arrow in the same scene shot by the two image acquisition units 1 at the same time; the spatial position information of the arrow is the spatial coordinates of the arrow.
The spatial attitude processing module 52 obtains a disparity map by using a stereo matching algorithm according to two viewpoint images in the same scene shot by the two image acquisition units 1 at the same time, and further obtains a depth map, and obtains the shooting instant spatial attitude of the arrow through three-dimensional reconstruction;
the velocity value processing module 53 selects a moving point on the arrow as a detection object, and obtains the moving displacement of the moving point within a certain time difference through an image frame difference to calculate the shooting instant velocity value.
The invention also provides a method for measuring the motion parameters of the arrow applied to the virtual archery system, which comprises the following steps:
s1, acquiring real-time motion image information in the motion process of the target arrow;
s2, judging whether the arrow is successfully ejected, and if the arrow is successfully ejected, continuing the subsequent operation S3; if the injection is not successful, ending;
s3, preprocessing the real-time motion image information to remove noise and obtain preprocessed real-time motion image information;
and S4, performing data processing on the processed real-time motion image information to obtain an initial motion parameter when the arrow leaves the bow and an end motion parameter when the arrow contacts the curtain.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (9)
1. An arrow motion parameter measurement system applied to a virtual archery system, wherein the arrow sequentially passes through an exit bow, an entrance archery area, an entrance curtain front area and a contact curtain in the process of being shot, and the motion parameter measurement system is characterized by comprising:
the image acquisition units are used for acquiring real-time motion image information in the arrow motion process;
the preprocessing unit is connected with the image acquisition unit and used for preprocessing the real-time motion image information acquired by the image acquisition unit so as to remove noise and obtain preprocessed motion image data;
and the data processing unit is connected with the image acquisition unit and is used for carrying out data processing on the preprocessed moving image data to obtain an initial motion parameter when the arrow leaves the bow and an end motion parameter when the arrow contacts the curtain.
2. The system for measuring the movement parameters of an arrow applied to a virtual archery system according to claim 1, further comprising a matching judgment unit for judging whether the arrow is successfully ejected or not, and generating a judgment result.
3. The system for measuring the movement parameters of the arrow applied to the virtual archery system according to claim 2, further comprising a control unit connected to the matching judgment unit and the data processing unit, wherein if the judgment result generated by the matching judgment unit indicates that the arrow is successfully ejected, the control unit controls the preprocessing unit to preprocess the real-time moving image data acquired by the image acquisition unit.
4. The system for measuring kinetic parameters of an arrow applied to a virtual archery system according to claim 1, characterized in that the motion image data includes spatial position information, spatial attitude, and velocity value.
5. The system for measuring kinetic parameters of an arrow applied to a virtual archery system according to claim 4, characterized in that the data processing unit includes a spatial position information processing module, a spatial attitude processing module and a velocity value processing module.
6. The system for measuring the kinetic parameters of an arrow applied to a virtual archery system according to claim 5, characterized in that the number of image acquisition units is 2.
7. The system for measuring the motion parameters of the arrow applied to the virtual archery system according to claim 6, wherein the spatial position information processing module is used for calculating the spatial position information of the arrow at the shooting moment according to the position coordinates of the two image acquisition units and the parallax of the arrow in the same scene shot by the two image acquisition units at the same time;
the space attitude processing module is used for acquiring a disparity map according to two viewpoint images in the same scene shot by the two image acquisition units at the same time, and obtaining the shooting instant space attitude of the arrow through three-dimensional reconstruction;
the speed value processing module selects a certain moving point on the arrow as a detection object, and obtains the moving displacement of the moving point in a certain time difference through image frame difference so as to calculate the shooting instant speed value.
8. The method for measuring the movement parameters of the arrow applied to the virtual archery system according to any one of claims 1 to 7, characterized by comprising the following steps:
1) acquiring real-time motion image information in the motion process of a target arrow;
2) preprocessing the real-time motion image information to remove noise and obtain preprocessed real-time motion image information;
3) and performing data processing on the processed real-time motion image information to obtain an initial motion parameter when the arrow leaves the bow and an ending motion parameter when the arrow contacts the curtain.
9. The method for measuring the motion parameters of the arrow applied to the virtual archery system according to claim 8, characterized by further comprising the following steps after the step 1):
and judging whether the arrow is successfully ejected or not, and if so, continuing the step 2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010117425.6A CN111288972A (en) | 2020-02-25 | 2020-02-25 | Arrow motion parameter measurement system and method applied to virtual archery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010117425.6A CN111288972A (en) | 2020-02-25 | 2020-02-25 | Arrow motion parameter measurement system and method applied to virtual archery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111288972A true CN111288972A (en) | 2020-06-16 |
Family
ID=71030091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010117425.6A Pending CN111288972A (en) | 2020-02-25 | 2020-02-25 | Arrow motion parameter measurement system and method applied to virtual archery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111288972A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114419737A (en) * | 2022-03-29 | 2022-04-29 | 广州青莲网络科技有限公司 | Bow and arrow drop point prediction method and system, electronic device and medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808308A (en) * | 2014-02-27 | 2014-05-21 | 西南大学 | Automatic collection method for spinning behavior data of silkworms |
| CN104548599A (en) * | 2013-10-29 | 2015-04-29 | 西安景行数创信息科技有限公司 | Game device utilizing projection technology and induction technology |
| CN104717514A (en) * | 2015-02-04 | 2015-06-17 | 四川长虹电器股份有限公司 | Multi-viewpoint image rendering system and method |
| CN109990662A (en) * | 2019-04-23 | 2019-07-09 | 西人马帝言(北京)科技有限公司 | Automatic target-indicating method, apparatus, equipment and computer readable storage medium |
| CN110189374A (en) * | 2019-05-30 | 2019-08-30 | 北京理工大学 | A kind of archery posture immediate feedback system |
| CN209530065U (en) * | 2018-11-07 | 2019-10-25 | 成都方德尔科技有限公司 | A kind of coordinate location device based on image |
| CN110787433A (en) * | 2018-08-03 | 2020-02-14 | 深圳市衡泰信科技有限公司 | Golf ball sensing system for golf simulator |
-
2020
- 2020-02-25 CN CN202010117425.6A patent/CN111288972A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548599A (en) * | 2013-10-29 | 2015-04-29 | 西安景行数创信息科技有限公司 | Game device utilizing projection technology and induction technology |
| CN103808308A (en) * | 2014-02-27 | 2014-05-21 | 西南大学 | Automatic collection method for spinning behavior data of silkworms |
| CN104717514A (en) * | 2015-02-04 | 2015-06-17 | 四川长虹电器股份有限公司 | Multi-viewpoint image rendering system and method |
| CN110787433A (en) * | 2018-08-03 | 2020-02-14 | 深圳市衡泰信科技有限公司 | Golf ball sensing system for golf simulator |
| CN209530065U (en) * | 2018-11-07 | 2019-10-25 | 成都方德尔科技有限公司 | A kind of coordinate location device based on image |
| CN109990662A (en) * | 2019-04-23 | 2019-07-09 | 西人马帝言(北京)科技有限公司 | Automatic target-indicating method, apparatus, equipment and computer readable storage medium |
| CN110189374A (en) * | 2019-05-30 | 2019-08-30 | 北京理工大学 | A kind of archery posture immediate feedback system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114419737A (en) * | 2022-03-29 | 2022-04-29 | 广州青莲网络科技有限公司 | Bow and arrow drop point prediction method and system, electronic device and medium |
| CN114419737B (en) * | 2022-03-29 | 2022-06-03 | 广州青莲网络科技有限公司 | Bow and arrow drop point prediction method and system, electronic device and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101048090B1 (en) | Apparatus for virtual golf simulation, and sensing device and method used to the same | |
| KR101385326B1 (en) | Method and system for photographing object in movement with camera, and based on taken images therefor, obtaining actual movement trace of same object | |
| KR101078975B1 (en) | Sensing device and method used to apparatus for virtual golf simulation | |
| KR102205639B1 (en) | Golf ball tracking system | |
| TWI448318B (en) | Virtual golf simulation apparatus and sensing device and method used for the same | |
| US9378559B2 (en) | System and method for motion estimation | |
| CN105288982B (en) | The motion state measure device of golf | |
| KR20190031111A (en) | Virtual tennis simulation system, sensing device and method for sensing process using the same | |
| KR20180050589A (en) | Apparatus for tracking object | |
| CN113012224B (en) | Positioning initialization method and related device, equipment and storage medium | |
| KR101912126B1 (en) | Apparatus for base-ball practice, sensing device and sensing method used to the same and control method for the same | |
| CN111288972A (en) | Arrow motion parameter measurement system and method applied to virtual archery system | |
| KR101703316B1 (en) | Method and apparatus for measuring velocity based on image | |
| CN113538550A (en) | Golf ball sensing method, system and storage medium | |
| KR102129129B1 (en) | Method, system and non-transitory computer-readable recording medium for measuring ball spin | |
| KR101461144B1 (en) | Device for sensing moving ball and method for the same | |
| KR102517067B1 (en) | Ceiling golf simulation system using two cameras | |
| JP2013009789A (en) | Camera system, photographing system, and photographing method | |
| WO2021056552A1 (en) | Video processing method and device | |
| TWI799184B (en) | Device and method for calculating spin of golf ball moved by hitting | |
| KR102329785B1 (en) | Method for estimating head direction of terminal for position measurement | |
| KR102582362B1 (en) | floor golf simulation system using two cameras | |
| TWI775636B (en) | Golf swing analysis system, golf swing analysis method and information memory medium | |
| CN114681885B (en) | Golf swing analysis system, golf swing analysis method, and information storage medium | |
| CN111330245A (en) | Virtual archery system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200616 |