JPS61290882A - Image deciding device - Google Patents

Abstract

PURPOSE:To decide easily an elapsed time when a moving object passes through a reference line from a prescribed time point, by providing a line sensor camera, a time data generating circuit, the first and the second converting means, a storage means, a selecting means, a read-out means, and a display means. CONSTITUTION:The titled device is provided with a line sensor camera, a time data generating circuit for starting a time counting operation, based on a start signal, and generating successively the time data corresponding to elapsed time after starting the time counting operation,l and the first converting means for converting successively an image output signal of the line sensor camera to picture element data and also superposing the time data onto the converted picture element data. Also, this device is provided with a storage means for storing successively the picture element data from the first converting means by a plural picture portion, a selecting means for selecting a desired picture, a read-out means for reading out successively the picture element data corresponding to the selected picture, the second converting means for converting the read-out picture element to a video signal, and a display means for displaying an image, based on the video signal from the second converting means. It this way, the elapsed time when a moving object passes through a reference line from a prescribed time point can be decided clearly at a glance on a display picture.

Description

Detailed Description of the Invention "Field of Industrial Application" This invention is applicable to video judgment used for determining the finishing order in horse races, bicycle races, boat races, auto races, etc., and for determining the shape of objects moving at high speed and reading characters. Regarding equipment.

[Prior Art J] For example, slit-type cameras are widely used to determine the finishing order in horse races, bicycle races, and the like. The schematic configuration of this slit type camera is as shown in FIG.

In this figure, 1 is a lens, 2 is a slit plate having a slit 2a, and 3 is a film, which are housed in a camera case C. And goal line 4
The film 3 is arranged so that the image of the object above is formed on the film 3 through the lens 1 and the slit 2a, and the film 3 is attached to a moving object (in this case, a racehorse) 5 passing over the goal line 4.
By moving and rewinding at a speed corresponding to the moving direction of the moving object 5 and in the opposite direction to the moving direction of the moving object 5, only the image of the moving object that has passed over the goal line 4 is continuously transferred onto the film 3 over time. be included. In this case, the image of a stationary object (for example, the background) on goal line 24 is always slit 2
Since it passes through point a and reaches the film 3', it is imprinted in a band shape along the moving direction of the film 3, and is not imprinted as an actual shape. Here, the judge visually checks the developed film 3 and judges the order of arrival of the plurality of moving objects 5 that have passed over the goal line 4.

``Problems to be Solved by the Invention'' By the way, in horse racing, bicycle racing, etc., it is desired to quickly determine the finish order. However, in the method of determining the finish order using the slit camera described above, the slit camera is placed at the finish line.
After all the moving objects 5 have passed the goal line 4, the film 3 must be taken out from the slit camera and developed, and the developed film 3 must be placed on the line of sight M. It must be handed over to the judge as a judgment document. Therefore, after all the moving objects 5 have reached the goal, the developed film 3 that will be used as the judgment material
Even if a film 3 capable of high-speed development processing is used, a certain amount of time is required for the film to reach the hands of the judge, which has been an impediment to speeding up the judgment work. In addition, the judge had to search out the parts necessary for the judgment from the developed long film 3 and rank the moving objects 5, making the judgment work complicated. Furthermore, when making this determination, it is necessary not only to simply determine the order of arrival, but also to determine the elapsed time from when the moving object 5 starts until it reaches the goal.
For example, a method has been adopted in which the elapsed time displayed on a display or the like is imprinted on the film 3 together with the moving object 5.

This invention was made in view of the above-mentioned circumstances, and allows the determination work to be performed quickly and easily, as well as to easily determine the elapsed time from a predetermined point until the moving object passes the reference line. The purpose is to provide an image judgment device that can perform the following tasks.

"Means for Solving the Problems" The present invention provides a line sensor camera having a line scan image sensor that scans and captures an object image of a moving object passing a predetermined reference line along the reference line; A time data generation circuit that starts a timing operation based on the signal and sequentially generates time data corresponding to the time that has elapsed since the start of the timing operation, and a time data generation circuit that sequentially converts the video output signal of the line sensor camera into pixel data. a first conversion means for superimposing the time data on the converted pixel data; a storage means for sequentially storing pixel data supplied from the first conversion means for a plurality of screens; a selection means for selecting a desired screen; a reading means for sequentially reading out pixel data corresponding to the screen selected by the selection means from among pixel data for a plurality of screens written in the storage means; It is characterized by comprising a second conversion means for converting read pixel data into a video signal, and a display means for displaying an image based on the video signal supplied from the second conversion means.

"Operation" At the same time as the moving object passes the reference line, pixel data corresponding to the object image of the moving object is sequentially stored in the storage means together with the time data generated by the time data generation circuit. Further, pixel data corresponding to a desired screen selected by the selection means from among the pixel data for a plurality of screens once taken into the storage means is read out and displayed by the display means together with the time data.

"Embodiments" Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an image judgment device according to an embodiment of the present invention, and the image judgment device shown in this figure is roughly divided into a line sensor camera 6, an image storage device 7, and a control box 8. A device line sensor camera 6 consisting of a line sensor and a monitor TV 9 is arranged on a line of sight M parallel to the goal line 4, and the other image storage device 7, control box 8 and monitor TV 9 are used to judge whether the situation is inside a building, etc. It is installed in a location where it is easy for personnel to make judgments. The line sensor camera 6 has a lens lO and a COD
(Charge Coupled Device) Line scan image sensor (hereinafter referred to as
11 (simply referred to as a line sensor) and an output amplifier 12. The line sensor 11 includes a photoelectric conversion section 13 having photosensitive elements for 512 pixels and an output shift register section 14, and is arranged to vertically scan the goal line 4. Then, the object image of the moving object 5 passing over the goal line 4 is imaged on the photoelectric conversion unit 13 via the lens lO, and
After being converted into an electrical signal in step 3, it is transferred to the output shift register section 14 for each pixel in synchronization with the scanning timing signal STS supplied from the outside, and then transferred to the output shift register section 14 in synchronization with the scanning timing signal STS. Part 14
The signal is output to the output amplifier 12, amplified by the output amplifier 12, and output as a vertical scanning video signal VS.

Next, in the image storage device 7, 2! is an analog vertical scanning video signal vS supplied from the line sensor camera 6
S, 6 b corresponding to the shading (brightness) of each pixel
A/D (
22 is a video memory that sequentially stores the pixel data PD outputted from the A/D converter 21 under the control of a control circuit 23, which will be described later, and is a video memory that sequentially stores pixel data PD outputted from the A/D converter 21 as 64-gradation grayscale information for one pixel. It has a storage capacity that can store 6 bits of pixel data PD for 16 frames (screens). In this case, at the time of writing, the l frame is composed of 512 dots in the horizontal direction x 512 dots in the vertical direction. 23 is video memory 2
2, address data AD is supplied to pixel data P
This is a control circuit that controls writing and reading of D. In this case, during reading, an l frame consists of 512 dots in the horizontal direction x 489 dots in the vertical direction. 24 converts the horizontal read pixel data HPD read out from the video memory 22 by the control circuit 23 into a video signal v.
25 is a video synchronization synthesis circuit that combines the video signal vs with a composite synchronization signal 5YNC and a scale signal SS and outputs a composite video signal CVS; 26 is a composite synchronization signal 5YNC and a synchronization signal generation circuit 27 that generates a synchronization signal DS corresponding to the composite synchronization signal 5yNC;
A scale signal generation circuit that generates S, 28 is a timer 28
This is a time data generation circuit that generates elapsed time data TD based on a timer control signal TCS supplied from the control circuit 23. . Furthermore, the monitor television 9 is configured to include a CRT (cathode ray tube) display device 29 .

Next, the control box 8 instructs the control circuit 23 to perform various operations, and is configured as shown in FIG. 2. In this figure, numeral 31 is a line scan time changeover switch that changes the scan speed for each line of the line sensor 11 in the line sensor camera 6;
(IKHz), 0.5m5ec (2KHz), 0.25
It is possible to switch to either m5ec (4KHz).

32 is a still switch; this still switch 32
When is pressed, the light mode is activated, and the video memory 22 stores the pixel data PD converted by the A/D converter 21.
Writing to is started. If you press the still switch 32 during this write mode, writing will be temporarily interrupted, and if you press the still switch 32 again, it will return to the write mode, and when writing for 16 frames is completed, this write mode will be canceled. Ru. This still switch 32 is provided with display lamps 32a and 32b.The display lamp 32a is lit during the light mode, and the display lamp 32b is lit during the light mode, and the display lamp 32b is lit during the light mode. It lights up during the period when data PD is being written. During this light mode, other switch on/off operations are disabled. Reference numeral 33 designates an indicator lamp that indicates that a still signal changeover switch (not shown) has been switched to the external side, and while it is lit, the light mode is switched on by an external still signal ESS supplied from the outside in place of the still switch 32 described above. Become. F ,,F t
. . .Fll is a screen selection switch for selecting an arbitrary screen to be displayed on the display screen of the monitor television 9 from among a plurality of screens once stored in the video memory 22;
, L, . . . LllB are screen display lamps that display the number of the screen that is being written or read. 34 is a select mode switch, and when this switch 34 is pressed and turned on, the select mode is set and the display lamp 34a lights up. In this selection mode, screen selection switches F, ~F1. The screen can be selected by In this case, when the above-mentioned still switch 32 is pressed to enter the light mode, the mode is automatically initialized to the select mode. 35 is a scroll mode switch, and when this switch 35 is pressed and turned on, the scroll mode is set and the display lamp 35 is turned on.
a lights up. In this scroll mode, screen selection switches Fl-F1. Scroll operation is possible from the screen selected by . In this case, switch 3
5 is turned on and the scroll mode is entered, the screen selection switch F t'=F t.

The on/off operation is disabled and the screen cannot be selected. 36 and 37 are scroll direction designation switches that designate the direction of scrolling, and when the scroll direction designation switch 36 is pressed, the display lamp 3
6a lights up to designate the screen movement direction to the right, and when the screen roll direction designation switch 37 is pressed, the display lamp 37a lights up and the screen movement direction is designated to the left. 38 is a scroll mode and a VTR (described later).
(Video tape recorder) Scroll/VTR that instructs to start or stop these operations in recording mode.
When the switch 3B is pressed and turned on, the indicator lamp 38a lights up. When the user presses the scroll direction designation switch 36 or 37 and then presses the scroll/VTR switch 38, the screen is displayed on the display screen of the monitor television 9 while moving in the designated direction. The moving speed of this screen is set by a scroll speed setting volume 39. 40 is a VTR mode switch, and when this switch 40 is pressed and turned on, the VTR recording mode is entered and the display lamp 40a lights up. Then, when the scroll/VTR switch 38 is pressed and turned on, the screens are automatically sequentially displayed starting from the first screen corresponding to the screen selection switch FI at the moving speed set by the scroll speed setting volume 39. After the scrolling is completed, the screen becomes blank for a predetermined period of time, the display lamp 38a goes out, and one cycle of the VTR recording mode ends.

During one cycle of this VTR recording mode,
The on/off operation of the scroll/VTR switch 38 is disabled. Furthermore, in this VTR recording mode, if the composite video signal CvS output from the image storage device 7 is supplied to the video signal input terminal of the VTR, the above-mentioned scroll screen will be recorded on the VTR. 4 is a time start switch, and when this switch 41 is pressed and turned on, the timer 28a in the time data generation circuit 28 starts timing operation, and the time data generation circuit 28 starts measuring time every 171 degrees Celsius seconds. The elapsed time data TD is supplied to the elapsed time display 42 of the control box 8 and the A/D converter 21, and during the time measurement operation of the timer 28g,
The indicator lamp 41a lights up. 43 is a time on/off switch, and when this switch 43 is pressed and turned on, the display lamp 43a lights up, and in the light mode, the elapsed time data TDh (A/D It is superimposed on the pixel data PD in the converter 21 and written into the video memory 22. 44 is a time reset switch, and when this switch 44 is pressed, the timer 28a is reset.

45 is an indicator lamp that indicates that the time start signal changeover switch (not shown) has been switched to the external side;
While the light is on, the timer 28a starts a timing operation by an external time start signal ETS supplied from the outside in place of the time start switch 41 described above. The time counting operation of the timer 28a stops when the write mode ends. 46 is a video out scale on/off switch, and when this switch 46 is pressed and turned on, the display lamp 46a lights up, and the scale signal SS generated by the scale signal generation circuit 27 is output to the video synchronization synthesis circuit 25. A vertical video scale line is superimposed on the signal vS and displayed on the display screen of the monitor television 9.

In this case, video scale position setting volume 4
7, and a setting value corresponding to the horizontal position of the scale line and a setting value corresponding to the number of scale lines set by the video scale line number setting volume 48 are sent as a scale setting signal SSS via the control circuit 23. The signal is then supplied to the scale signal generation circuit 27. 49 is a video out positive/negative changeover switch, and when this switch 49 is pressed,
When the display lamp 49a is lit, the inverted signal Is is supplied to the video synchronous synthesis circuit 25 via the control circuit 23, and the video synchronous synthesis circuit 25 converts the composite video signal C.
vS is inverted, and a negative screen is displayed on the display screen of the monitor television 9. When the switch 49 is pressed again, the display lamp 49a goes out and the normal positive screen is displayed. Reference numeral 50 denotes a video allot erase switch, and when this switch 50 is pressed and turned on, the display lamp 50a lights up, and the erase signal ES is supplied to the video synchronization synthesis circuit 25 via the control circuit 23, and this video synchronization synthesis circuit At step 25, the composite video signal CvS is made into a blank signal. A video signal level meter 51 displays the peak value of the vertical scanning video signal vvS output from the line sensor camera 6, and is used when setting the aperture value of the lens 10 of the line sensor camera 6. Reference numeral 52 denotes a right/left switch, which is set to the right side when the moving object 5 moves in front of the line sensor camera 6 from right to left, and set to the left side when the moving object 5 moves in front of the line sensor camera 6 from right to left.

As a result, the order in which addresses are specified when writing pixel data PD to the video memory 22 is changed, and the moving object image is displayed on the display screen of the monitor television 9 in the same direction as the moving direction of the actual moving object 5. .

Next, a procedure for determining the finishing order of a horse race using the video determining device configured as described above will be described.

First, the line scan time changeover switch 31 is operated to set the scan speed of the line sensor tt in accordance with the approximate moving speed of the racehorse (moving object 5). This is because if the scanning speed of the line sensor 11 is too fast compared to the moving speed of the racehorse, an object image extending in the horizontal direction (in the direction of movement of the racehorse) than the actual object image of the racehorse will be stored in the video memory 22. On the other hand, if the scanning speed is too slow, an object image that has shrunk in the horizontal direction will be written into the video memory 22. Next, the line sensor camera 6 photographs the white object, and the level meter 51
The aperture value of the line sensor camera 6 is adjusted so that the pointer does not exceed a predetermined value, and the line sensor camera 6
is placed on line of sight M of goal line 4. moreover,
The right/left selector switch 52 is switched depending on the direction of movement of the racehorse, and the time on/off switch 43 is turned on when it is desired to capture the elapsed time since the horse race started along with the object image. In addition, display lamps 33 and 4
5 is off and that the still signal changeover switch and time start signal changeover switch are not switched to the external side.

Next, when the racehorse starts, the time start switch 41 is turned on. As a result, the timer 28a starts timing operation, and the elapsed time data TD is supplied from the time data generation circuit 28 to the elapsed time display 42, and the elapsed time from the start is sequentially displayed on the elapsed time display 42. be done. Then, just before the leading racehorse passes the finish line 4, the still switch 32 is turned on. As a result, the light mode is set, and the vertical scanning video signal vvs supplied from the line sensor camera 6 is
The pixel data PD is converted into pixel data PD by the /D converter 21, and this pixel data PD is sequentially written into the video memory 22. In this case, as shown in FIG. ) are written sequentially. Then, a 16th storage area A1 .corresponding to the 16th screen F+a of the video memory 22 is stored. The write mode is canceled at the time when the pixel data PD has been written up to that point. On this occasion,
When the time on/off switch 43 is turned on, the elapsed time data TD is supplied to the A/D converter 21;
1 (1) is superimposed on the pixel data Pb. As a result, as shown in FIG. 1000 seconds from the time display T and the time display reference line TSL (however, the scan speed h(0,25
In the case of m5ec, the time display line TL indicating this time is stored in the video memory 22 together with the object image every time (1/100 seconds in the case of m5ec) elapses.
will be written to. Note that the time start signal selector switch is switched to the external side so that the external time start signal ETS is supplied to the image storage device 7 at the same time as the start of the race, thereby starting the timekeeping operation of the timer 28a. I don't mind.

Next, after the race is over, the judge selects the screen selection switch F1.
-F1° corresponding to the desired screen is selected and pressed, the desired screen is displayed on the display screen of the monitor television 9, and the order of arrival is determined. In this case, based on the positional relationship between the time display T1 time display reference line TSL and time display line TL displayed on the display screen of the monitor television 9 and the racehorse, the racehorse crosses the finish line 4 after starting. You can know the elapsed time until Also, press the scroll mode switch 35 to set the scroll mode, and then press the desired screen selection switch F.
, ~F1. Press the screen selection switch F1~Fll+
Scroll operation is enabled from the screen selected by , and then scroll direction designation switch 36 or 3
7 to specify the scroll direction and scroll/VT
When the R switch 3 is pressed, the screen scrolls in the specified direction and at the moving speed set by the scroll speed setting volume 39. It is also possible to determine the order of arrival while looking at this scroll screen.

According to the embodiment described above, after all the racehorses have crossed the finish line, the finishing order can be immediately determined on the display screen of the monitor television 9. In addition, for example, the racehorse that crossed the finish line first can The desired screen can be selected from the screen showing the race horse that finished last to the screen showing the race horse that finished last, and it can be displayed on the display screen of the monitor TV 9, making the judgment work quick and easy. It is possible to do so.

Further, from the time display T1 time display reference line TSL and time display line TL displayed on the display screen of the monitor television 9, it is possible to know the elapsed time from when the racehorse starts until it finishes.

"Effects of the Invention" As explained above, according to the present invention, a line sensor camera includes a line scan image sensor that scans and captures an object image of a moving object passing a predetermined reference line along the reference line. a time data generation circuit that starts a timing operation based on a start signal and sequentially generates time data corresponding to the elapsed time from the start of the timing operation; and a time data generation circuit that sequentially generates time data corresponding to the elapsed time from the start of the timing operation; a first conversion means for converting the time data into the converted pixel data and superimposing the time data on the converted pixel data; a selection means for selecting a desired screen from among the plurality of screens; and a reading means for sequentially reading out pixel data corresponding to the screen selected by the selection means from among the pixel data for the plurality of screens written in the storage means. , a second conversion means for converting the pixel data read out by the readout means into a video signal, and a display means for displaying an image based on the video signal supplied from the second conversion means. Therefore, the determination work can be performed quickly and easily, and the elapsed time from a predetermined point in time until the moving object passes the reference line can be clearly determined on the display screen.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
FIG. 2 is a plan view showing the external configuration of the control box 8 in the same embodiment, FIG. 3 is a diagram for explaining an image displayed on the monitor television 9 in the same embodiment, and FIG.
The figure is a schematic configuration diagram showing the configuration of a conventional slit type camera. 4...Goal line (reference line), 5...
・Moving object, 6... Line sensor camera, 7.
... Image storage device, 8 ... Control box, 9 ... Monitor television (display means),
11...CCD line scan image sensor, 21...A/D converter (first conversion means), 22...video memory (storage means), 2
3... Control circuit, 24... D/A converter (second conversion means), 28... Time data generation circuit, 28a... Timer, 41...
...Time start switch, 43...Time on/off switch, Fl~Flit...Screen selection switch (selection means), T...Time display, TSL... ...Time display reference line, TL...
・Time display line.

Claims (1)

[Claims] A line sensor camera having a line scan image sensor that scans and captures an object image of a moving object passing a predetermined reference line along the reference line, and a line sensor camera that starts a timing operation based on a start signal and starts a timing operation. a time data generation circuit that sequentially generates time data corresponding to the elapsed time since the start of the line sensor camera; a first conversion means; a storage means for sequentially storing pixel data for a plurality of screens supplied from the first conversion means; a selection means for selecting a desired screen from the plurality of screens; a readout unit that sequentially reads out pixel data corresponding to the screen selected by the selection unit from among the written pixel data for a plurality of screens; and a second unit that converts the pixel data read out by the readout unit into a video signal. 1. A video determination device comprising: a converting means; and a display means for displaying an image based on a video signal supplied from the second converting means.