JPH0779470B2 - Video judgment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to image determination used for determining the order of arrival in horse racing, bicycle racing, boat racing, auto racing, etc. Regarding the device.

"Prior Art" For example, a slit-type camera is widely used to determine the order of arrival in a horse race, a bicycle race or 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, 3 is a film, and these are housed in a camera case C. Then, the object image on the goal line 4 is the lens 1
And the film 2 is arranged so as to form an image on the film 3 through the slit 2a, and the film 3 is moved at a speed corresponding to the moving object (race horse in this case) 5 passing on the goal line 4 and in the moving direction of the moving object 5. By moving and rewinding in the opposite direction, only the moving object image passing on the goal line 4 is continuously imaged on the film 3 with the passage of time. In this case, a stationary object on the goal line 4 (for example,
The image of (background) always passes through the slit 2a and reaches the film 3, so that it is imaged in a band shape along the moving direction of the film 3 and is not imaged as an actual shape. Here, the judge judges the order of arrival of the plurality of moving objects 5 that have passed the goal line 4 by visually observing the developed film 3.

"Problems to be Solved by the Invention" By the way, in horse racing, bicycle races, etc., quick arrival order determination is desired. However, in the method of determining the order of arrival using the slit type camera described above, the slit type camera must be arranged on the sight line M of the goal line 4, and all the moving objects 5 pass through the goal line 4. After that, the film 3 must be taken out from the slit type camera, subjected to development processing, and the developed film 3 must be handed to a judge as a judgment material. Therefore, even if all the moving objects 5 reach the goal and the developed film 3 as the reference material reaches the hand of the judge, even if the film 3 capable of high speed development processing is used, It takes time, which is an obstacle to speeding up the determination work. Moreover, in the above-mentioned slit type camera, the moving speed of the film 3 must be set according to the moving speed of the moving object 5. For example, when the moving speed of the film 3 is too fast as compared with the moving speed of the moving object 5, an object image extending in the horizontal direction (moving direction of the film 3) than the actual object image of the moving object 5 is formed on the film 3. If the moving speed of the film 3 is too slow, the object image contracted in the horizontal direction will be transferred onto the film 3. Therefore, for example, when the slit type camera used for determining the order of arrival in horse racing is used for determining the order of arrival in racing, the moving speed of the film 3 must be changed. It was not possible to deal with different moving objects 5 immediately, and lacked versatility.

The present invention has been made in view of the above circumstances, and provides a video determination device with high versatility that can perform determination work quickly and can immediately respond to moving objects with different moving speeds. The purpose is to do.

"Means for Solving Problems" The present invention scans an object image of a moving object passing through a predetermined reference line in a direction orthogonal to the moving direction of the moving object on an extension line of the reference line. A line sensor camera having a line scan image sensor for capturing, a scan speed switching means for switching the scan speed of the line scan image sensor, and a first conversion means for sequentially converting video output signals of the line sensor camera into digital pixel data. One of the pixel data stored in the storage means, which stores the pixel data supplied from the first conversion means continuously and sequentially according to the passage of time and has a storage capacity for a plurality of screens. A range setting means that sets a range of continuous pixel data that can be displayed on the screen and the range setting means. It is supplied from the reading means for reading out the pixel data in a predetermined range from the storage means, the second converting means for converting the pixel data read out by the reading means into an analog video signal, and the second converting means. And a display unit for displaying an image based on the video signal.

[Operation] At the same time when the moving object passes the reference line, the pixel data corresponding to the object image of the moving object is sequentially stored in the storage unit at the scanning speed corresponding to the moving speed of the moving object. Further, the pixel data corresponding to the desired screen selected by the selection unit is read out from the pixel data for a plurality of screens that have been temporarily stored in the storage unit, and displayed by the display unit.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an image determination device according to an embodiment of the present invention. The image determination device shown in this figure is roughly divided into a line sensor camera 6, an image storage device 7, and a control box 8. And the monitor television 9, the line sensor camera 6 is arranged on the line of sight M parallel to the goal line 4, and the other image storage device 7, control box 8 and monitor television 9 are provided.
Is installed in a place such as a building where a judge can easily make a judgment. The line sensor camera 6 has a lens 10 and a CCD (Cha
rge Coupled Device) Line scan image sensor (hereinafter simply referred to as line sensor) 11
And an output amplifier 12. Line sensor
Reference numeral 11 is composed of a photoelectric conversion unit 13 having a photosensitive element for 512 pixels and an output shift register unit 14, and is arranged so as to scan the goal line 4 vertically. An object image of the moving object 5 passing on the goal line 4 is formed on the photoelectric conversion unit 13 via the lens 10, converted into an electric signal by the photoelectric conversion unit 13, and then supplied from the outside. Each pixel is transferred to the output shift register unit 14 in synchronization with the scanning timing signal STS, and further output from the output shift register unit 14 to the output amplifier 12 in synchronization with the scanning timing signal STS. It is amplified and output as the vertical scanning video signal VVS.

Next, in the image storage device 21, 21 is an analog vertical scanning video signal VSS supplied from the line sensor camera 6.
Is converted into 6-bit digital pixel data PD corresponding to the density (brightness) of each pixel, and 22 is the pixel data PD output from the A / D converter 21. A video memory which is sequentially stored under the control of a control circuit 23, which will be described later, and has a storage capacity capable of storing 6-bit pixel data PD, which is grayscale information of 64 gradations for one pixel, for 16 frames (screens). Have In this case, at the time of writing, one frame consists of 512 dots in the horizontal direction and 512 dots in the vertical direction. Reference numeral 23 is a control circuit that supplies address data AD to the video memory 22 and controls writing and reading of the pixel data PD. In this case, at the time of reading, one frame consists of 512 dots in the horizontal direction and 489 dots in the vertical direction. Reference numeral 24 is a D for converting the horizontal read pixel data HPD read from the video memory 22 by the control circuit 23 into a video signal VS.
/ A (digital / analog) converter, 25 is video signal VS
A video sync synthesizing circuit for synthesizing the composite sync signal SYNC and the scale signal SS and outputting a composite video signal CVS. 26 is a sync signal generating circuit for generating the composite sync signal SYNC and a sync signal DS corresponding to the composite sync signal SYNC. , 27 is a scale signal generation circuit for generating a scale signal SS based on the scale setting signal SSS supplied from the control circuit 23, and 28 is a timer 28a.
Is a time data generating circuit that generates elapsed time data TD based on a timer control signal TCS supplied from the control circuit 23. Also, the monitor TV 9 is a CRT
(Cathode Ray Tube) A display device 29 is provided.

Next, the control box 8 is used to instruct the control circuit 23 to perform various operations, and is configured as shown in FIG. In this figure, 31 is a line scan time changeover switch for switching the scan speed of each line of the line sensor 11 in the line sensor camera 6, 2 msec (0.5 KHz), 1 msec (1 KHz), 0.5 msec (2 KH
z) or 0.25msec (4KHz). Reference numeral 32 denotes a still switch. When the still switch 32 is pressed, the write mode is set, and writing of the pixel data PD converted by the A / D converter 21 to the video memory 22 is started. When the still switch 32 is pressed during the period of the write mode, the writing is temporarily stopped, and when the still switch 32 is pressed again, the write mode is resumed. When the writing for 16 frames is completed, the write mode is released. The 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 in the light mode and the video memory 2
Lights up while the pixel data PD for 2 is being written. During this write mode,
On / off operations of other switches are disabled. 33 is a display lamp which means that the still signal changeover switch (not shown) has been switched to the external side, and during lighting, a light mode is set by an external still signal ESS supplied from the outside instead of the still switch 32 described above. Become. F ₁ , F ₂ ... F ₁₆ are screen selection switches for selecting an arbitrary screen to be displayed on the display screen of the monitor TV 9 from a plurality of screens temporarily stored in the video memory 22, and L ₁ , L ₂ ... L ₁₆ is a screen display lamp that displays the number of the screen that is being written or read. Reference numeral 34 denotes a select mode switch. When the switch 34 is pressed and turned on, the select mode is set and the display lamp 34a lights up. In the select mode, it is possible to select a screen by screen selection switch F ₁ to F _16. In this case, when the still switch 32 is pressed to enter the write mode, the select mode is automatically initialized. Reference numeral 35 denotes a scroll mode switch, and when the switch 35 is pressed and turned on, the scroll mode is set and the display lamp 35a lights up. In the scroll mode, scrolling is possible from the screen selected by the screen selection switch F ₁ to F _16.
In this case, after the switch 35 is turned on and the scroll mode is entered, the on / off operation of the screen selection switches F _{1 to} F ₁₆ is disabled, and the screen cannot be selected. 36 and 37 are scroll direction designating switches for designating the scrolling direction, and when the scroll direction designating switch 36 is pressed, the display lamp 36a lights up and the moving direction of the screen is designated to the right direction. When 37 is pressed, the indicator lamp 37a is turned on and the moving direction of the screen is designated to the left. 38 is a scroll mode and VTR (video tape recorder) described later
A scroll / VTR switch for instructing the start or stop of these operations in the recording mode. When the switch 38 is pressed and turned on, the display lamp 38a lights up. Then, when the scroll direction designation switch 36 or 37 is pushed and the scroll / VTR switch 38 is pushed subsequently, 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 the scroll speed setting volume 39. 40 is VTR
This is a mode switch. When this switch 40 is pressed and turned on, the VTR recording mode is activated and the indicator lamp 40a
Lights up. Then, when the scroll / VTR switch 38 is pressed and turned on, the screen selection switch F _{1 is} moved at the movement speed set by the scroll speed setting volume 39.
The screen is automatically scrolled sequentially from the first screen corresponding to, the blank screen is displayed for a predetermined time after the scroll is finished, the display lamp 38a is turned off, and one cycle of the VTR recording mode is completed. 1 of this VTR recording mode
Scroll / VTR switch 38 during cycle
The on / off operation of is disabled. Further, in the 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 scroll screen described above is recorded in the VTR. Reference numeral 41 denotes a time start switch.When the switch 41 is pressed and turned on, a timer 28a in the time data generation circuit 28 starts a time counting operation, and the time data generation circuit 28 outputs the time every 1/10 second unit. The elapsed time data TD is supplied to the elapsed time indicator 42 of the control box 8 and the A / D converter 21, respectively.
The display lamp 41a is turned on during the time counting operation of the timer 28a. Reference numeral 43 denotes a time on / off switch. When the switch 43 is pressed and turned on, the display lamp 43a lights up, and in the light mode, the elapsed time data TD output from the time data generating circuit 28 is A / D. Converter 2
At 1, the pixel data PD is superimposed and written in the video memory 22. 44 is a time reset switch,
When the switch 44 is pushed, the timer 28a is reset. Reference numeral 45 is a display lamp that indicates that the time start signal changeover switch (not shown) has been changed to the outside, and while it is lit, the time start switch 41 described above is displayed.
Instead of the external time start signal ET supplied from the outside
S causes the timer 28a to start counting operation. Above timer
The timing operation of 28a stops when the write mode ends. Reference numeral 46 denotes a video out scale on / off switch. When the 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 displayed by the video synchronization synthesis circuit 25. signal
A vertical video scale line is displayed on the display screen of the monitor television 9 by being superimposed on VS. In this case, the setting value corresponding to the horizontal position of the scale line is set by the video scale position setting volume 47 and the setting value corresponding to the number of scale lines set by the video scale line number setting volume 48 is the scale setting. The signal SSS is supplied to the scale signal generation circuit 27 via the control circuit 23.
Reference numeral 49 denotes a video out positive / negative switching switch. When the switch 49 is pressed and the display lamp 49a is lit, the inversion signal IS is supplied to the video synchronous synthesis circuit 25 via the control circuit 23. In the video synchronous synthesizing circuit 25, the composite video signal CVS is inverted and the negative screen is displayed on the display screen of the monitor television 9. Also, switch again 49
When is pressed, the display lamp 49a is turned off, and a normal positive screen is displayed. Reference numeral 50 denotes a video-out erase switch. When the switch 50 is pressed and turned on, the display lamp 50a lights up, and the erase signal ES is supplied to the video sync synthesis circuit 25 via the control circuit 23. At 25, the composite video signal CVS is made a blank signal. Reference numeral 51 is a video signal level meter that 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 is set to the left side in the opposite case. As a result, the order of address designation when writing the pixel data PD in the video memory 22 is switched, and a moving object image is displayed on the display screen of the monitor television 9 in the same direction as the actual moving direction of the moving object 5. .

Next, a procedure for determining the order of arrival of a horse race using the image determination device having the above-described configuration will be described. First, the line scan time changeover switch 31 is operated to change the line sensor 11 according to the approximate moving speed of the racehorse (moving object 5).
Set the scan speed of. Next, the line sensor camera 6 captures a white object, and the aperture of the line sensor camera 6 is adjusted so that the pointer of the level meter 51 does not exceed a predetermined value. Place on M. Furthermore, the right / left switch 52 is switched according to the moving direction of the racehorse, and the time on / off switch 43 is turned on when it is desired to capture the elapsed time from the start of the horserace together with the object image. Further, it is confirmed that the display lamps 33 and 45 are turned off and the still signal changeover switch and the time start signal changeover switch are not switched to the outside.

Next, when the racehorse starts, the time start switch 41 is turned on. As a result, the elapsed time from the start is sequentially displayed on the elapsed time display unit 42 in units of 1/10 seconds. After that, the still switch 32 is turned on immediately before the leading racehorse passes the goal line 4. As a result, the light mode is set, and the line sensor camera 6
The vertical scanning video signal VVS supplied from the A / D converter 21
Is converted into pixel data PD, and this pixel data PD is sequentially written in the video memory 22. In this case, the pixel data PD output from the A / D converter 21 is the first data corresponding to the _first screen F ₁ of the video memory 22 as shown in FIG.
Are sequentially written from the storage area A _{1 in the} direction of arrow V (vertical direction). Then, the 16th screen F of the video memory 22
_{When the} pixel data PD is written up to the 16th storage area A ₁₆ corresponding to 16, the write mode is released. At this time, if the time on / off switch 43 is turned on, the time display reference line TSL, the time display T indicating the elapsed time from the start of the horse race to the time display reference line TSL, and the time display Every time 1/10 seconds (however, 1/100 seconds when the scanning speed is 0.25 msec) elapses from the reference line TSL, the time display line TL indicating this is written in the video memory 22 together with the object image.

Next, after the race is over, the judge judges the screen selection switch F ₁ ~
Screen selection switch F corresponding to the desired screen from F ₁₆
Select and press _{1 to} F ₁₆ to display a desired screen on the display screen of the monitor TV 9 and determine the arrival order. Further, when the desired screen selection switches F _{1 to} F ₁₆ are pressed after the scroll mode switch 35 is set to the scroll mode, the scroll operation can be performed from the screen selected by the screen selection switches F _{1 to} F ₁₆ , and then the scroll operation is performed. Specify the scroll direction with the direction specification switch 36 or 37, and press the scroll / VTR switch 38 to move to the specified direction.
Also, the screen scrolls at the moving speed set by the scroll speed setting volume 39. It is also possible to determine the arrival order while looking at this scroll screen.

According to the above-described embodiment, the finish order can be determined on the display screen of the monitor TV 9 immediately after all the racehorses have finished the goal. Since a desired screen can be selected and displayed on the display screen of the monitor TV 9 from the screen displayed to the screen where the last race horse is shown, the determination work can be performed quickly and easily. It is possible to do. Further, after using for the arrival order determination of the horse race, for example, when performing the arrival order determination of the bicycle race, it suffices to switch the scan speed of the line sensor 11 with the line scan time changeover switch 31 as appropriate. Even when determining the order of arrival in a race or the like, it is possible to immediately respond.

[Advantages of the Invention] As described above, according to the present invention, an object image of a moving object that passes through a predetermined reference line, in an extension line of the reference line, in a direction orthogonal to the moving direction of the moving object. A line sensor camera having a line scan image sensor for scanning and scanning, a scan speed switching means for switching the scan speed of the line scan image sensor, and a first for sequentially converting video output signals of the line sensor camera into digital pixel data. Conversion means, storage means for successively and sequentially storing the pixel data supplied from the first conversion means in accordance with the passage of time, and having a storage capacity for a plurality of screens, and pixel data stored in the storage means A range setting means capable of displaying in one pixel and setting a range of continuous pixel data, and the range setting means Read-out means for reading out the pixel data in the range set by the reading means from the storage means, second converting means for converting the pixel data read out by the reading means into an analog video signal, and supply from the second converting means Since the display means for displaying the image based on the video signal is provided,
For example, when determining the order of arrival in a horse race, many race horses arrive at the goal line with a time lag. Therefore, from the time when the first horse arrives to the time when the last horse arrives, 1
There are many cases where a few screens are required without fitting within the screen, but even in such a case, it is possible to immediately find the screen required for the judgment from multiple screens and make an accurate arrival order judgment quickly. Further, by switching the scanning speed of the line scan image sensor by the scanning speed switching means, it is possible to immediately deal with a moving object having a different moving speed, so that it is possible to improve usability. Is obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention,
FIG. 2 is a plan view showing an external configuration of the control box 8 in the same embodiment, FIG. 3 is a view for explaining an image displayed on the monitor television 9 in the same embodiment, and FIG.
FIG. 1 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 TV (display means), 11 CCD line scan image sensor, 21 ...
... A / D converter (first conversion means), 22 ... video memory (storage means), 23 ... control circuit (reading means), 24 ...
… D / A converter (second conversion means), 31 …… Line scan time changeover switch (scanning speed changeover means),
F _{1 to} F ₁₆ …… Screen selection switch (range setting means).

Claims (1)

[Claims] 1. A line scan image sensor which scans an object image of a moving object passing through a predetermined reference line in a direction orthogonal to the moving direction of the moving object on an extension line of the reference line. A line sensor camera having: b) a scanning speed switching means for switching the scanning speed of the line scan image sensor; c) a first conversion means for sequentially converting the image output signal of the line sensor camera into digital pixel data; ) Storage means for sequentially and sequentially storing the pixel data supplied from the first conversion means according to the passage of time and having a storage capacity for a plurality of screens; and e) the pixel data stored in the storage means. A range setting means which can be displayed on one screen and which sets a range of continuous pixel data; and f) the range setting means. Read-out means for reading out the pixel data in the specified range from the storage means; g) second conversion means for converting the pixel data read out by the read-out means into an analog video signal; and h) the second conversion means. And a display unit that displays an image based on a video signal supplied from the video determination device.