JP3434610B2 - Arrival order and time judgment device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a finish order and time determination device for boat racing, horse racing, bicycle racing, athletics and the like.

[0002]

2. Description of the Related Art For example, Japanese Patent Publication No.
A technique disclosed as a "determination device" in Japanese Patent Laid-Open No. 5-24831 and an improved technique thereof are disclosed in JP-A-3-13.
No. 9374 “Electronic Immediate Judgment Device” is available, and a block diagram of these systems is shown in FIG.

In the prior art, a linear sensor camera 33 is used for picking up an image of a moving body 32 passing through a judgment reference line 31 in accordance with this reference line, and an image obtained from this camera 33 is sent to an image processor 34. The image recording switch 35 stores the time information necessary for the arrival order determination in an internal image memory, scan-converts it, and displays it on a high-definition monitor 36. Then, the vertical decision line superimposed on this image was operated by the operation device 37 to determine the order of arrival of the moving body, and the time was measured.

The image processor includes an A / D converter for converting a video signal obtained by a linear sensor camera into image data, a memory section for storing the image data obtained by the A / D converter, and It comprises a unit for selecting necessary image data from the image data stored in the memory unit and reading it at a required synchronous speed for displaying on a display device, and a unit for operating the writing and reading.

[0005]

In the above-mentioned prior art,
Since there is only one linear sensor camera connected, the storage unit can store only one system of video signals, and the read-out means to the display device is also for one system of video signals, one system system It is difficult to display the images of a plurality of linear sensor cameras, and it is necessary to use a plurality of systems to measure the transit time and speed of a moving object that passes through reference lines set at two or more places. Therefore, the passing time during the competition is measured from the images obtained by the linear sensor cameras of each individual system, and the speed is the elapsed time of each section from the passing time obtained by each system. It was calculated, and was further calculated by (section distance / elapsed time).

According to the present invention, the images of a plurality of linear sensor cameras are input to the memory in one display device without using a plurality of systems, and the passing time at each linear sensor camera position and the speed of those sections are input. It is an object of the present invention to provide an arrival order and time determination device capable of measuring the.

[0007]

In order to achieve the above object, the present invention provides a plurality of linear sensor cameras arranged in accordance with a plurality of predetermined reference lines, and a plurality of images obtained from these linear sensor cameras. Means for switching to and writing in one image memory, means for individually measuring the passage time of the moving body passing through each reference line, and movement of the moving body from the measured time and the distance between the measurement points. A means for calculating the speed is provided.

[0008]

As a result, required image inputs from a plurality of linear sensor cameras are recorded in one image processor, and the passing time of the reference line, which is the mounting location of each linear sensor camera, is measured from the recorded images, and The speed can be calculated.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As a system example of the present invention, FIG. 1 shows an embodiment in which a linear sensor camera is arranged on each of two extension lines of a reference line 1 and a reference line 2. The arrival order and time determination device mainly includes a linear sensor camera 5 having a lens 3, a linear sensor camera 6 having a lens 4, an image recording switch 7,
8, an image switching device 9, an image processor 12 which is an image recording unit, an operating device 21, a high-definition monitor 22, and the like.

An image of the moving body 26 passing through the reference line 1 is input to the linear sensor camera 5 via the lens 3 and converted into an image signal. In order to record this video signal in the image memory, the image recording switch 7 is turned on before the moving body 26 reaches the reference line 1, and the linear sensor camera 5 of the linear sensor camera 5 input to the video switch 9 is moved. The video signal is selected and recorded in the image processor 12, and the image is output to the video monitor 14.

The operation of the video switch 9 in this case will be described. The video signal from the linear sensor camera 5 and the video signal from the linear sensor camera 6 are input to the video switching device 9. When the image recording switch 7 is turned on, the video signal from the linear sensor camera 5 is recorded and an image is displayed. Record switch 8
When is turned on, it works to record the video signal of the linear sensor camera 6. That is, in order to select these images, the CPU 10 reads the input image recording switch signal, and the camera switching unit 1 is placed on the image side of the input switch.
1 to control the selected video signal to the image processor 1
Send to 2. Further, the memory write signal 25 synchronized with the ON of the image recording switch is output to the image processor 12, and the selected video signal 16 is written in the image memory. At this time, the time when the image is taken in is also recorded on the image memory.

The camera switching unit 11 includes switches 7 and 8
If any of the above is OFF, the video signal of any camera is not output. To further explain the internal operation of the image processor 12, the input video signal is the A / D conversion circuit 1 in the image processor 12.
The image of the camera is written into the memory unit 15 which stores the image through the memory writing circuit 14 which is digitized by 3. The memory unit 15 stores the image, and at the same time, records information from the time generator 17 that superimposes the elapsed time on the image and the character generator 20 that superimposes the character, the symbol, and the judgment reference line on the image. Recording to the image processor 12 operates by inputting a memory write signal to the CPU 19 and controlling the memory writing circuit 14.

As a result, when the moving body 26 passes the reference line 1, the image recording switch 7 is input to record the video signal of the linear sensor camera 5 in the memory section 15 of the image processor 12, and then the moving body 26. Is passing the reference line 2, by inputting the image recording switch 8,
The video signal of the linear sensor camera 6 can be recorded in the memory unit 15 of the image processor 12.

A method of reproducing and displaying the recorded image at this time and measuring the passing time and the speed will be described below. The CPU of the image processor inputs the image selection signal from the operation unit 21 to the recorded image of FIG.
6 is obtained by controlling 6 and an image (range: A) when the moving body 26 passes the reference line 1 and the reference line 2 is obtained.
The image (range: B) when passing through is output together with the passing time.

The image memory and the overlay memory 15a for outputting the cursor line are combined and output on the screen. The CPU 19 in the image processor 12 outputs a cursor line on the overlay memory in response to a control signal from the operation unit 21, and displays it on the screen of the monitor 22 together with the recorded image. Further, the position of the cursor line and the time written in the image memory are collated to obtain the passage time on the cursor line. Cursor lines are output on the image (range: A) when the moving body 26 passes the reference line 1 and the image (range: B) when the moving body 26 passes the reference line 2, and the respective passage times are obtained.

As a result, the passage time C of the reference line 1 and the passage time D of the reference line 2 are measured. Further, when the distance E between the two points of the reference line 1 and the reference line 2 is set in advance, the speed G is measured by the following formula from the distance between the two points and the required time between the two points, which is the difference in arrival time. can do. G = E (m) / | (C−D) | (sec) Further, instead of the image recording switches 7 and 8, when the moving body 15 can predict the passage time of the reference line 1 and the reference line 2 from the start in advance. Is a single image processor by automatically switching images by setting the time.
It is possible to sequentially record the video on the 2nd screen. Further, instead of the image recording switches 7 and 8, a photoelectric sensor or the like is installed at a position before the reference lines 1 and 2 by a predetermined distance to detect a passing object, and the video switch 9 is operated to automatically record. It is also possible to do.

[0017]

According to the present invention, it is possible to record the images of a plurality of linear sensor cameras in one image processor while switching the images with the image switch, and to determine the arrival time of each position of the moving body. The passage time and speed can be measured by the measurement. For example, in the case of athletics, it is possible to analyze the pace distribution based on the intermediate passage time, and in the case of a bicycle race, it is possible to measure the speed of a half lap.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing a monitor image for explaining an embodiment of the present invention.

FIG. 3 is a block diagram of a conventional system.

[Explanation of symbols]

1, 2 judgment reference line 3, 4 lens 5, 6 Linear sensor camera 7, 8 image recording switch 9 Video switch 10 CPU 11 Camera switching section 12 image processor 13 A / D converter 14 Memory writing circuit 15 memory 16 readout circuit 17 Time Generator 18 Address controller 19 CPU 20 character generator 21 Operation device 22 video monitor 24 Selected video signal 25 Memory write signal 26 Mobile A reference line 1 image B reference line 2 image C reference line 1 transit time D reference line 2 transit time

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04N 7/18

Claims (2)

(57) [Claims] 1. An image of a moving body, which is arranged according to each of a plurality of judgment reference lines such as a goal line and passes through the judgment reference lines, is imaged through a lens and is scanned at a predetermined cycle to generate a video signal. A plurality of linear sensor cameras to be obtained, a plurality of image recording switches associated with each of the plurality of line sensor cameras and turned on before passing through the determination reference line, and the plurality of image recording switches are turned on. In the case of the ON state, the selection means for selecting the video signal of the line sensor camera corresponding to the image recording switch in the ON state, and the conversion for converting the video signal selected by the selection means into image data by A / D conversion Means, an image memory, a writing means for storing the image data obtained by the converting means in the image memory, a display device, and the image data stored in the image memory. Reading means for selecting necessary image data from the image data and displaying the image data on the display device;
Said write means and operation means for operating the read means, the image of the passage time of simultaneously moving body and in which the selected image data to the image memory comprises a time generator
The time is written in synchronization with the ON of the image recording switch.
Image data stored in the image memory, and a time input means for inputting the moving body speed and a calculating means for calculating the speed of the moving body from the distance between the plurality of judging reference lines and the passing time of the moving body's judging reference line. From the above multiple reference lines
The moving object is displayed on the display device and displayed on the screen of the display device.
To obtain the transit time of the moving body by the above operating means.
Arrival order and time determination device is characterized in that so as to measure at least one mobile individual passing time or speed by the. 2. An image of a moving body which is arranged in accordance with each of a plurality of judgment reference lines such as a goal line and which passes through the judgment reference lines is imaged through a lens and is scanned at a predetermined cycle to generate a video signal. A plurality of linear sensor cameras to be obtained, a detection means that is associated with each of the plurality of line sensor cameras and that allows the moving body to detect the determination reference line, and a line corresponding to the detected detection means when the detection means detects The selecting means for selecting the image signal of the sensor camera, the converting means for converting the image signal selected by the selecting means into image data by A / D conversion, the image memory, and the image data obtained by the converting means Writing means for storing in the image memory, a display device, and necessary image data selected from the image data stored in the image memory and read out for display on the display device. A reading means, an operating means for operating the writing means and the reading means, and a time
A generator is provided, and the passing time of the moving body is detected in the image memory at the same time as the selected image data is detected by the detection means.
The image memory includes a time input means for inputting as a time to be written in advance, and a calculation means for calculating the speed of the moving body from the distance between the plurality of determination reference lines and the determination reference line passage time of the moving body. A moving object that passes through the plurality of reference lines from the stored image data is displayed on the display device.
Display and by the operation means on the screen of the display device
An arrival order and time determination device, characterized in that at least one of a passing time and a speed of each moving body is measured by obtaining a passing time of the moving body.