• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:NL1041105A
    申请号:NL1041105
    申请日:2014-12-17
    公开日:2015-10-12
    发明作者:Fan Yun-Chieh；Chang Shy-Jeng；Liu Jue-Wen；Lu Wei-Jen
    申请人:Nat Chung Shan Inst Of Science & Tech；
    IPC主号:
    专利说明:

    Title: Method for recording coordinates of light spots BACKGROUND OF THE INVENTION Field of the invention.
    The present invention refers to a method for capturing coordinates of light spots, and more particularly to a method for capturing coordinates of light spots according to a time-order logical computation.
    Description of the art described above.
    In a conventional bullet impact point coordinate recognition method, various infrared light spot cameras are provided for a screen of a test shot; if an infrared laser gun shoots at the screen, several infrared light spots appear on the screen and the infrared light spot cameras take the screen again to capture images that have light spots; and then a coordinate detector will analyze the captured images, thereby obtaining the coordinates of the light spots, so that videos for carrying out the bullet impact point are played at positions of the screen corresponding to the coordinates of the light spots.
    But if the test shot is held in a field that has different targets for different uses, then different light spots will be generated because the targets are shot for different times within the same time period; because the conventional method fails to recognize the light from each of the laser guns and the sequence of the light rays emanating from the laser guns. Consequently, if an event occurs outside the target during the test recording, then the conventional method will not succeed in determining which laser rifle the bullet that misses its target belongs to; because of the deviated bullet impact point, which results in the training of the test shot.
    The present invention, therefore, derives from avoiding or at least reducing the aforementioned disadvantages.
    SUMMARY OF THE INVENTION
    An object of the present invention is to provide a method for recording coordinates of light spots. The method uses time sequence calculation to get the coordinates of the light spots; thus, under a circumstance where it has different light emitters, the emitter of each of the light spots, can still be recognized.
    To achieve the aforementioned and other objects, the method for capturing the coordinates of light spots is provided and is applicable to a light projection system. The light projection system contains a screen, a plurality of light emitters and at least one camera. A plurality of goals is configured on the screen. The light emitters emit light rays to the target ends respectively. A plurality of light spots is formed on the screen by the light rays as time goes on. Each of the light emitters generates a freely emitted signal. Each of the at least one camera is adapted to capture an image of the screen with the light spots. The method includes the following steps: capturing the image of a screen for a plurality of times according to a time sequence by each of the at least one camera, wherein a photographic range of each of the at least one camera involves two or more targets; determining a fixed time of each of the images, respectively, wherein the fixed time of the light spots is the same as the fixed time of the corresponding image to which the light spot belongs; calculating coordinates of the light spots of each of the images, respectively; recording the recorded time and the coordinates of each of the light spots in a database; determining here a radiating time of the radiating signal for each of the light emitters; and selecting the light spots having the recorded time, being closest to each of the emission times and obtaining the coordinates of the aforementioned light spots of the database.
    In which, the appearance of each of the light emitters is shaped like a gun or a mortar, and the light emitted from each of the light emitters is an invisible infrared light.
    The present invention will become more apparent from the following description if it is connected to the additional drawings, which show, for the purpose of illustration only, the preferred embodiment (s) in accordance with the present invention.
    BRIEF DESCRIPTION OF THE DRAWINGS
    FIG. 1 is a flow chart of the method for recording coordinates of light spots according to the present invention;
    FIG. 2 is a schematic diagram showing the architecture of the method of capturing coordinates of light spots according to the present invention; and
    FIG. 3 is a schematic diagram showing data recorded in a database used in the method for recording coordinates of light spots according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS.
    The present invention is a method for recording coordinates of a plurality of light spots. The method is applicable for a light projection system; More specifically, the light projection system is a test recording system. As shown in FIG. 2, the system includes a screen 1, a plurality of light emitters 2 and at least one camera 3. wherein, the appearance of each of the light emitters 2 is formed as, according to the requirements of the test shot, a gun or a mortar. Instead of physical bullets, the rifle (or the mortar) normally emits an invisible infrared light to the screen 1, and the user of the light emitters 2 can, at its discretion, allow the corresponding light emitter 2 to generate a emitting signal by a trigger of to pull the corresponding light emitter 2. On the other hand, a plurality of targets 11 is configured on the screen 1 and is provided for the test recording. The targets 11 correspond to the light emitters 2, one by one, respectively. If one of the light emitters 2 radiates infrared light to the screen 1, a plurality of light spots is formed on the screen 1, and at least one camera 3 captures an image of the screen 1, in which a photographic range of each of the at least a camera 3 comprises two or more targets 11. The at least one camera 3 is adapted to capture the invisible infrared light, so that the image is captured by at least one camera 3 showing the light spots.
    In addition, the system has a guest 4 electrically connected to the at least one camera 3 and each of the light emitters 2, respectively, for signal exchange and control of the at least one camera 3 and the light emitters 2. The guest 4 comprises a signal coordinate unit 41 recording, calculating a time order unit 42 and a database 43. By using the above-mentioned components together with the implementation of the method according to the present invention, the coordinates of the light spots on the screen 1 can be recorded. The flow chart of the method according to the present invention is provided as Fig. 1, the method comprises the following steps:
    Capture the image of the screen 1 for a plurality of times in a time order by each of the at least one camera 3; respectively a fixed time determining for each of the images; calculating the coordinates of the light spots for each of the images; record the recorded time and coordinates of each of the light spots in the database 43; determining a beam time of the beam signal for each of the light emitters 2; and selecting the light spots which have the recorded time closest to each of the irradiation times and obtain the coordinates of the aforementioned light spots of the database 43.
    According to the aforementioned method, first, the signal coordinate recording unit 41 checks each of the at least one camera 3 to capture the image of the screen for several times. In this embodiment, the signal coordinate recording unit 41 controls each of the at least one camera 3 to capture the image of the screen 1 many times within a second and thus obtain different images. Each of the images has recorded time information. Because each of the light emitters 2 emits infrared light rays to the screen, the captured images, respectively, the light spots formed by the infrared light have rays emitted from the light emitters 2. Accordingly, each of the light spots has a fixed time, and the recorded time of each of the light spots is the same as the recorded time of the corresponding image to which the light spot belongs. And then, the signal coordinate recording unit 41 immediately calculates the coordinates of each of the light spots, so that the coordinates of the light spot of each of the images can be obtained.
    Based on the above, to avoid the accuracy of the coordinate information being compromised, due to the signal delay of the signal coordinate recording unit 41, after it obtains information about the recorded times and the coordinates of the light spots of each of the images, the time order calculating unit 42 records the recorded times and the coordinates of the light spots of each of the images in the database 43 according to a time order; that is sequential. The information recorded in the database 43 can be explained as, for example, shown in FIG. 3; the recorded time and the coordinates of the light spots are recorded for the light emitters 2 and the at least one camera 3. For example, for the light spot of the C2 image formed by the first emitter 2, the recorded time is T11 and the coordinate is P11 . Accordingly, the recorded times and the coordinates of the light spots formed by the light emitters 2 can be arranged sequentially.
    If a user pulls the trigger (or launcher) from one of the light emitters 2, then the light emitter 2 will generate a emit signal. The radiating signal is then sent to the time-order calculating unit 42, so as to determine the radiating time of the light emitter 2. And then, by checking with the database 43, a fixed time, which is closest to the irradiation time, is obtained. Thus, the light spot that has the aforementioned recorded time is provided to represent the current bullet impact point if the user pulls the trigger. Therefore, the coordinates of light spot are obtained from the database 43, so that the location of the bullet impact point can be received.
    Although certain embodiments of the invention are described in detail for the purpose of explanation, various modifications and enhancements can be made without departing from the spirit and scope of the invention. Accordingly, the invention is not limited, with the exception of the attached claims.
    权利要求:
    Claims (3)
    [1]
    A method for capturing coordinates of light spots, the method applicable to a light projection system consisting of a screen, a plurality of light emitters and at least one camera, wherein a plurality of targets is configured on the screen, and the light emitters emit light rays emanate from the targets, respectively, wherein a plurality of light spots is formed in the screen by the light rays as time progresses and each of the light emitters generates a radiation signal at its discretion, wherein each of the at least one camera is adjusted to capture image of the screen with the light spots, characterized in that the method includes: Capture the image of the screen for a plurality of times according to a time sequence by each the at least one camera, wherein a photographic range of each of the at least one a camera contains two or more targets; determining respectively a fixed time of each of the images, wherein the fixed time of each of the light spots is the same as the fixed time of the corresponding image to which the light spot belongs; respectively calculating the coordinates of the light spots of each of the images; recording the recorded time and coordinates of each of the light spots in a database; a radiating time of the radiating signal determining each of the light emitters; and selecting the light spots, which have the recorded time closest to that of each of the irradiation times, and obtain the coordinates of the aforementioned light spots of the database.
    [2]
    The method for recording coordinates of light spots according to claim 1, wherein the light is an invisible infrared light.
    [3]
    The method for recording coordinates of light spots according to claim 1, wherein the appearance of each of the light emitters is formed as a gun or a mortar.
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    同族专利:
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    TW201619569A|2016-06-01|
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    TWI526668B|2016-03-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    TW103139857A|TWI526668B|2014-11-18|2014-11-18|A method of capturing the coordinates of a complex spot|
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