JPH0779469B2 - 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 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. Further, the judge has to find out a portion necessary for the judgment from the developed long film 3 and judge the order of arrival of the moving object 5, and the judgment work is complicated.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide an image determination device capable of performing determination work quickly and easily.

"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, first conversion means for sequentially converting image output signals of the line sensor camera into digital pixel data, and pixel data supplied from the first conversion means over time. And a storage unit having a storage capacity for a plurality of screens and a range of continuous pixel data that can be displayed on one screen among the pixel data stored in the storage unit. A range setting means, a reading means for reading the pixel data of the range set by the range setting means from the storage means, and a reading means It is characterized by further comprising: second conversion means for converting the read pixel data into an analog video signal; and display means for displaying an image based on the video signal supplied from the second conversion means. .

"Operation" At the same time when 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. 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 that indicates that the still signal changeover switch (not shown) has been switched to the external side.While lit, a light mode is set by the 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 above-mentioned methyl switch 32 is pressed to enter the write mode, the select mode is automatically initialized. Reference numeral 35 denotes a scroll mode switch. When the switch 35 is pressed and turned on, the scroll mode is set and the display lamp 35a is turned on. 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 set, the screen selection switches F _{1 to} F ₁₆
The on / off operation of 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 / VTR switch for instructing the start or stop of these operations in the scroll mode and the VTR (video tape recorder) recording mode described later. When the switch 38 is pressed and turned on, the indicator lamp 38a turns on. Light. Then, the scroll direction designation switch 36 or
If you press 37 and then 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 the scroll speed setting volume 39. 40 is
This is a VTR mode switch, and when this switch 40 is pressed and turned on, the VTR recording mode is set and the display lamp 40a lights up. And scroll / VTR switch 38
When is turned on by pressing, the screen automatically scrolls sequentially from the first screen corresponding to the screen selection switch F ₁ at the moving speed set by the scroll speed setting volume 39, and this scrolling After the end, the blank screen is displayed for a predetermined time, the display lamp 38a is turned off, and one cycle of the VTR recording mode ends. During one cycle of the VTR recording mode, the on / off operation of the scroll / VTR switch 38 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.
Further, 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. It is superimposed on the pixel data PD in the converter 21 and written in the video memory 22. 44 is a time reset switch, and when this switch 44 is pressed, 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 switched to the external side, and while it is lit, a timer is generated by an external time start signal ETS supplied from outside instead of the time start switch 41 described above. 28a starts timing operation. The timing operation of the timer 28a is stopped 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. A vertical video scale line is displayed on the display screen of the monitor TV 9 by being superimposed on the signal VS. in this case,
The video scale position setting volume 47 sets the setting value corresponding to the horizontal position of the scale line and the video scale line number setting volume.
The set value corresponding to the number of scale lines set by 48 is supplied to the scale signal generation circuit 27 via the control circuit 23 as the scale setting signal SSS. 49 is a video out positive / negative 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, and the composite video signal CVS is generated in the video synchronous synthesis circuit 25. The screen of the negative state is displayed on the display screen of the monitor TV 9 after being inverted. When the switch 49 is pressed again, the display lamp 49a is turned off, and the normal positive screen is displayed. Reference numeral 50 denotes a video-out erase switch. When the switch 50 is pressed, the display lamp 50a that is turned on is turned on, 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 is a right / left switch for moving the object 5 to the line sensor camera 6
Set to the right side when moving from right to left in front of, and set to the left side when moving in the opposite direction. 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. This is because if the scanning speed of the line sensor 11 is too fast compared to the moving speed of the racehorse, the object image that extends in the horizontal direction (the moving direction of the racehorse) than the actual object image of the racehorse is stored in the video memory 22. This is because the object image contracted in the horizontal direction is written in the video memory 22 if the scan speed is too slow. Next, a white object is photographed by the line sensor camera 6, and the aperture value of the line sensor camera 6 is adjusted so that the pointer of the level meter 51 does not exceed a predetermined value.
The line sensor camera 6 is arranged on the sight line M of the goal line 4. Furthermore, if the right / left switch 52 is switched according to the moving direction of the racehorse, and if you want to capture the elapsed time from the start of the race together with the object image, turn on the time on / off switch 43 and display again. Check that the lamps 33 and 45 are off and that the still signal changeover switch and 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 camera 22. In this case, the pixel data PD converted by the A / D converter 21 is, as shown in FIG. 3, the direction from the _first storage area A ₁ corresponding to the screen selection switch F ₁ in the video memory 22 in the arrow V direction ( Vertical direction)
Are sequentially written to. Then, when the pixel data PD is written to the _16th storage area A ₁₆ corresponding to the screen selection switch F ₁₆ in the video memory 22, 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 1/10 second from the reference line TSL (However, 1/100 when the scan speed is 0.25 msec.
Each time (second) elapses, a time display line TL indicating this is written in the video camera 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. In this case, for example, when the screen selection switch F ₁ is selected, as shown in FIG. 3, pixel data PD of 512 dots in the horizontal direction × 489 dots in the vertical direction from the _first storage area A ₁ in the video memory 22.
Is read in the direction of arrow H (horizontal direction) and is supplied to the D / A converter 24 as horizontal read pixel data HPD. Next, the horizontal read pixel data HPD is converted into a video signal VS in the D / A converter 24, and this video signal VS becomes the composite video signal CVS in the video synchronous synthesis circuit 25.
Is supplied to. As a result, the first screen corresponding to the screen selection switch F ₁ is displayed on the display screen of the monitor TV 9. Also, after pressing the scroll mode switch 35 to set the scroll mode, the desired screen selection switch F ₁
Press ~ F ₁₆ to enable scrolling from the selected screen, then specify the scroll direction with the scroll direction specification switch 36 or 37, and then scroll / V.
When the TR switch 38 is pressed, the screen scrolls in the designated direction and at the moving speed set by the scroll speed setting volume 39. It is also possible to determine the order of arrival by 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 showing the screen to the screen showing the racehorse that has finally scored, the determination work can be performed quickly and easily. It is possible to do.

[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 capturing, first conversion means for sequentially converting image output signals of the line sensor camera into digital pixel data, and pixel data supplied from the first conversion means And a range of continuous pixel data that can be displayed on one screen of the pixel data stored in the storage means and that has a storage capacity for a plurality of screens. And a reading means for reading pixel data of the range set by the range setting means from the storage means, Since the second conversion means for converting the pixel data read by the output means into an analog video signal and the display means for displaying an image based on the video signal supplied from the second conversion means are provided, Judgment work can be performed immediately when the capturing of the object image of the moving object is completed, and a desired screen can be selected and displayed from a plurality of screens. The number of race horses arrives at the goal line with a time lag, so it often takes several screens from the time when the first horse arrives to the time when the last horse arrives, without fitting within one screen. However, even in such a case, it is possible to immediately search for a screen necessary for the judgment from a plurality of screens and quickly carry out an accurate arrival order judgment. Therefore, the judgment work can be performed quickly and easily. so That effect can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention,
2 is a plan view showing the 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. It is a schematic block diagram which shows the structure of a 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), F _{1 to} F ₁₆ …… Screen selection switch (range setting means).

Claims (1)

[Claims] 1. A line scan image sensor for scanning an object image of a moving object passing through a predetermined reference line in a direction orthogonal to a moving direction of the moving object on an extension line of the reference line. A line sensor camera, b) first conversion means for sequentially converting an image output signal of the line sensor camera into digital pixel data, and c) pixel data supplied from the first conversion means according to the passage of time. Storage means for storing successively and sequentially and having a storage capacity for a plurality of screens; and d) a range of pixel data stored in the storage means that can be displayed on one screen and sets a range of continuous pixel data. Setting means, e) reading means for reading the pixel data in the range set by the range setting means from the storage means, and f) reading by the reading means. A second conversion means for converting the outputted pixel data into an analog video signal; and g) a display means for displaying an image based on the video signal supplied from the second conversion means. Video decision device.