JP3699088B2 - Arrival order and time determination device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an arrival order and time determination device in boat racing, horse racing, bicycle racing, athletics and the like.
[0002]
[Prior art]
Conventional techniques include, for example, a technique disclosed in Japanese Patent Publication No. 55-24831 as a determination apparatus, and Japanese Patent Application Laid-Open No. 3-139375 “Electronic Immediate Determination Apparatus”. These use a linear image sensor camera that photographs a moving body that passes a judgment reference line such as a goal line in accordance with the reference line, and supplies the output of this camera to an image recording unit having a scan conversion function. Recorded together with time information necessary for determination, etc. Scanned and converted one-dimensional video signal of linear sensor camera into two-dimensional video signal, read out from recording unit with time information necessary for arrival order determination, etc., and output to video monitor To do.
[0003]
The judgment screen on the video monitor displays the luminance line on the judgment reference line recorded for each scanning cycle of the linear sensor with the horizontal direction of the monitor screen as the time axis, so the judgment line is displayed in the vertical direction of the monitor screen. , Align it with the tip of the moving object image, read the time of the time information displayed above or below the judgment line, align it with the tip of the moving object image, and display the time information displayed above or below the judgment line However, the task of aligning the decision line with the moving object image is based on the fact that humans only rely on visual observation of the gray level of the monitor image. , What to do.
[0004]
[Problems to be solved by the invention]
In the above-mentioned conventional method, the density difference of the image on the monitor screen, that is, the analog amount is visually observed and judged, so that the density difference of the moving body image on the monitor screen is insufficient or the focus is not good. For example, it is very difficult to visually match the judgment line to the target moving body image with high accuracy. There was also a risk of individual differences in the judgment. An object of the present invention is to provide an arrival order and time determination device that eliminates these drawbacks and enables determination with higher accuracy.
[0005]
[Means for Solving the Problems]
The arrival order and time determination device of the present invention has a linear sensor camera, and forms an image of a moving body passing through a determination reference line such as a goal line on the linear sensor camera via a lens, and at a predetermined cycle. Means for scanning and obtaining a video signal; means for converting the video signal obtained by the means into image data by A / D conversion; image memory means for writing image data obtained by the means; and storing in the image memory means Means for selecting necessary image data from the obtained image data and reading it at a required synchronization speed for display on the display device; means for operating the writing and reading; and means for generating a decision line and superimposing it on the monitor image In the arrival order and time determination device comprising: a means for extracting image data including a moving body at the determination line position and superimposing it on the monitor image; With the profile display in accordance with image level of the image data to the gray level, the concentration level is equal to or greater than a predetermined level, configured to determine a determination reference line passing of the moving object.
[0006]
The arrival order and time determination device of the present invention further includes means for generating a second determination line perpendicular to the determination line and superimposing it on the monitor image so that the image level on the determination line can be profile-displayed. To do.
[0007]
Furthermore, the arrival order and time determining apparatus of the present invention, the gray level profile is configured to represent a numeric value corresponding to the gray level on the image memory means.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The operation of the present invention will be described. The determination line is superimposed in the vertical direction of the monitor screen on which the determination image is displayed. The image level on the determination line is profile-displayed on the left side of the same monitor screen, for example. When this determination line is moved and superimposed on the moving object on the monitor screen, the profile waveform changes due to the density difference between the background and the moving object. Since the profile waveform is a line graph and can be confirmed digitally in units of one pixel level in the image memory, the amount of change can be determined more accurately than by visually determining the analog density change on the monitor screen.
[0009]
Further, the second determination line is displayed in a direction perpendicular to the determination line, and the image level on the second determination line is profile-displayed on, for example, the lower side on the monitor screen. In other words, if the profile is displayed with the above two determination lines, the determination can be made based on the two-dimensional density difference, so that the accuracy is further improved. Furthermore, there is no individual difference if the density level of the profile is digitally counted in units of pixels and shade levels in the image memory storing the judgment image, digitized and displayed on the screen, and judged based on the value. Accurate determination is possible.
[0010]
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the arrival order and time determination device of the present invention, and FIG. 2 is a diagram showing the configuration of a video monitor screen for explaining the present invention. As shown in FIG. 1, the arrival order and time determination device mainly includes a linear sensor camera 4, an image recording unit 6, an operating device 11, a video monitor 12, an image filing device 13, a video printer 14, and the like.
[0011]
In FIG. 1, an image of a moving body 2 passing through a determination reference line 1 is formed on a linear sensor 5 in a linear sensor camera 4 through a lens 3, and an image memory in an image recording unit 6 is scanned every scanning period of the sensor. 7 stores the video signal. The image recording unit 6 includes an image memory 7, an overlay memory 8, a profile calculation unit 9, and a CPU unit 10. The determination image signal stored in the image memory 7 and the determination line signal transferred to the overlay memory 8 are combined. Then, it is displayed on the screen of the video monitor 12 as an image in which a determination image and a determination line are superimposed.
[0012]
The determination lines 15 and 16 are controlled by the operation signal from the operation unit 11 so that the display position of the overlay memory 8 is changed and moved on the screen via the CPU unit 10. The image memory 7 and the overlay memory 8 are linked, and the image information at the image memory position on which the determination lines 15 and 16 are superimposed, that is, the gray level information of the image is immediately passed to the profile calculation unit 9, and after the calculation processing A line graph is formed and transferred to the overlay memory 8, and a profile is displayed on the monitor screen.
[0013]
The video monitor screen of FIG. 2 shows an image in which the water surface of the racetrack and the boat are captured as an example. When the determination line 15 is moved in the horizontal direction on the monitor screen and aligned with the tip of the moving body (boat) image, and the image level of the determination image at the position of the determination line 15 is converted into a line graph, a profile 15a is obtained. In the profile 15a, the right direction is the direction with the higher density level. The image level shown in 15b indicates that an image having a sufficiently high density as compared to the water surface is captured at the position of the determination line 15 at the tip of the boat.
[0014]
For example, if the judgment line 15 is at the tip of the boat, the level indicated by the concentration level 15b that captures the moving body (boat) of the profile 15a is close to the level of the water surface. Since the image level digitally changes depending on the position of the determination line 15 in this way, the density level difference between the water surface and the boat is determined in advance as a reference for determination, and the determination line position at which a higher density level difference can be confirmed is moved. If it is determined on the basis of a quantitative criterion such as passing through a body determination reference line, determination without individual differences is possible.
[0015]
Since the time information recorded when the determination image is captured is displayed as the time marker 17 below the determination image on the monitor screen, the time when the moving body passes the determination reference line can be read from the position of the determination line 15. Since the position information and time information of the determination line 15 are linked via the image memory, the passage time may be automatically measured and displayed.
[0016]
The decision line 16 is a second decision line perpendicular to the decision line 15, and like the decision line 15, this time it is moved in the vertical direction, and the image level of any line is converted into a line graph, which is displayed on the monitor screen. The profile 16a is superimposed. The profile 16a represents a temporal change in density on the determination line 16, and the time when the moving object passes the determination reference line can be read from the rising waveform of the luminance change 16b by the moving object.
[0017]
In this way, by displaying the judgment line only in the horizontal direction, or only in the vertical direction, or in the horizontal and vertical directions, and displaying the profile of the concentration level, it is possible to quantitatively determine the time when the moving body has passed the judgment reference line, Determination with high accuracy is possible. Furthermore, if the level value of the density level 15b capturing the moving body is digitally counted and expressed as a numerical value as the density level value 18, it is possible to easily quantitatively determine the difference in the judgment reference level.
[0018]
【The invention's effect】
According to the present invention, the density difference of the image on the monitor screen, that is, the analog amount can be visually observed, and the judgment line can be confirmed with the digital value to determine the arrival order or time by matching the decision line with the moving body. Therefore, there is no individual difference among the determination persons in the determination result, and highly accurate determination work is possible.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.
FIG. 2 is a conceptual diagram of a video monitor screen for explaining the present invention.
[Explanation of symbols]
1: determination reference line, 2: moving body, 3: lens, 4: linear sensor camera, 5: linear sensor, 6: image recording unit, 7: image memory, 8: overlay memory, 9: profile calculation unit, 10: CPU unit, 11: controller, 12: video monitor, 13, image filing device, 14: video printer, 15: determination line, 15a: profile, 15b: density level capturing a moving body, 16: determination line, 16a: Profile, 16b: Luminance change by moving body, 17: Time marker, 18: Image level value.

Claims (3)

  A means having a linear sensor camera, and forming an image of a moving body passing through a determination reference line such as a goal line on the linear sensor camera via a lens and obtaining a video signal by scanning in a predetermined cycle; A means for converting the video signal obtained by the above into image data by A / D conversion, an image memory means for writing the image data obtained by the means, and selecting necessary image data from the image data stored in the image memory means. An arrival order and time determination device comprising: means for reading at a required synchronization speed for display on a display device; means for operating the writing and reading; and means for generating a determination line and superimposing it on a monitor image Means for extracting the image data including the moving body at the determination line position and superimposing the image data on the monitor image so that the image level of the image data on the determination line is set to a gray level. Flip with profile displayed, if the density level is higher than a predetermined level, arrival order and time determination apparatus characterized by being configured to determine a determination reference line passing of the moving object.   2. The arrival order according to claim 1, further comprising means for generating a second determination line perpendicular to the determination line and superimposing the second determination line on the monitor image so that the image level on the determination line can be profile-displayed. Time determination device. According to claim 1 or 2, a gray level profile, arrival order and time determination device is characterized in that as represented by a numerical value corresponding to the gray level on the image memory means.

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