JP2001346160A - Method for photographing mobile body, photographing device and photographing monitor system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a method for photographing a mobile body, a photographing device and a photographing monitor system by which the entire system cost can be decreased, a sharp color image of a mobile body can be reliably obtained and the mobile body can be securely monitored. SOLUTION: Image data within a photographing range that are continuously photographed at all times are endlessly and consecutively written in storage areas, and the image data having endlessly been written in the recording area by the amount of data photographed from a time T2 after the detection of the mobile body 1 until a time being traced back by a time T3 are acquired as image data when photographing the mobile body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving object photographing method, a photographing device, and a photographing monitoring system, and more particularly to a moving object photographing method, a photographing device, and a photographing monitoring system suitable for photographing and monitoring a moving object. It is.

[0002]

2. Description of the Related Art FIG. 7 is a block diagram showing the configuration of a moving object recognition system disclosed in Japanese Patent Application Laid-Open No. H11-167625, where 101 is a camera device, 102 is a reflective LED lighting device, and 103 is a LED device. The control device, 104 is the boundary between the road and the shoulder, 105 is the vehicle, 106 is the vehicle 105
It is a license plate. FIG. 8 is a block diagram showing a configuration of the reflection type LED lighting device 102. In FIG.
111 is a stabilized power supply for stabilizing the power supply voltage;
2 is a charge / discharge capacitor, 113 is a light emission signal shaping circuit, 1
14 is a constant current circuit, 115 is an LED unit, 112a
Is a signal indicating the state of charge of the charge / discharge capacitor 112;
3a is a light emission permission signal, 113b is an alarm signal output when the LED is destroyed, and 114a and 115a are signal lines from which the alarm signal is output.

Next, the operation will be described. This moving object recognition system includes a reflective LED lighting device 102 on the roadside,
A vehicle recognizing device including a camera device 101 and a control device 103 is provided. The control device 103 detects that the vehicle 105 has entered a photographable range, and controls the camera device 101 to start a shutter operation. Reflective type L
The ED illuminating device 102 is controlled to irradiate infrared light to the area following the entire vehicle 105, and the license plate 10
6 captures a still image of the vehicle 105 into the camera device 101 with image quality that can be identified.

[0004]

Since the conventional moving object photographing method, photographing apparatus and photographing monitoring system are constructed as described above, the vehicle is illuminated by the infrared light emitted from the reflective LED lighting device 102. Since the still image of the vehicle is captured, the obtained still image of the vehicle is a black-and-white image, and it is difficult to obtain a color image. Further, in a camera device that performs photographing using infrared light as a medium, the price is expensive. Yes,
There has been a problem that the price of the entire system using such a camera device is also high.

[0005] In addition, the camera device 101
It is necessary to accurately synchronize the shutter operation with the irradiation timing of the infrared light by the reflective LED lighting device 102. Therefore, when the speed is largely different from vehicle to vehicle, the photographable range when the speed of the vehicle 105 is high is large. May be exceeded. Furthermore, an image obtained according to the speed of the vehicle 105 is blurred, and the sharpness of the image varies. For this reason, the reflection type LE is used to increase the depth of focus of the camera device 101 and to avoid a variation in the sharpness of an image generated according to the speed of the vehicle 105.
There are problems such as the need to increase the intensity of infrared light emitted from the D lighting device 102.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to reduce the cost of the entire system at a low cost, and to reliably obtain a clear color image of a moving object. It is an object of the present invention to obtain a moving object photographing method, a photographing apparatus, and a photographing monitoring system capable of reliably monitoring a body.

[0007]

According to the present invention, there is provided a moving object photographing method in which image data in an image pickup range which is continuously photographed is continuously and continuously written into a storage area, and the moving object is photographed. After the detection, the image data written endlessly into the recording area for the image taken from when the first time elapses to when the second time goes back,
The image is obtained as an image of the moving object.

[0008] A photographing apparatus according to the present invention includes a camera device that continuously captures an image of an image capturing range, and continuously transfers image data of the image capturing range captured by the camera device to a limited storage area in an endless form. An overwriting recording unit that writes the image data by the overwriting recording unit; a writing stop unit that stops writing of the image data by the overwriting recording unit after a first time has elapsed from when a moving object is detected; A recording storage unit for recording the image data written to the recording area by the overwriting recording unit for a second time period from when the writing of the image data by the overwriting recording unit is stopped. It is.

A photographing apparatus according to the present invention is provided with a light emitting section for irradiating white light in a pulsed manner to a photographing range where a camera apparatus captures an image based on detection of a moving object.

A moving object photographing apparatus according to the present invention includes a light emitting section for irradiating white light in a pulsed manner to a photographing range photographed by the camera apparatus in synchronization with a synchronization signal of a video signal output from the camera apparatus. It is prepared for.

A moving object photographing apparatus according to the present invention includes a light emitting section for irradiating white light in pulses in synchronization with a vertical synchronizing signal of a video signal output from a camera apparatus.

According to the moving object photographing apparatus of the present invention, the white light is synchronized with the synchronizing signal of the video signal output from the camera device during the period from when the moving object is detected to when the third time elapses. Is provided with a light emitting unit for irradiating the light in a pulsed manner.

The moving object photographing apparatus according to the present invention is provided with a light emitting section for irradiating a white light in a pulsed manner at a low illuminance even in the nighttime or daytime to a photographing range where the camera apparatus photographs.

[0014] The moving object photographing apparatus according to the present invention overwrites image data in the photographing range photographed by the camera apparatus in order from the oldest image file in the finite-length storage area, thereby endlessly writing to the storage area. This is provided with a recording unit.

A moving object photographing apparatus according to the present invention is provided with an overwrite recording unit for endlessly overwriting compressed image data of an image pickup range picked up by a camera apparatus to a finite length storage area.

A moving object photographing apparatus according to the present invention is provided with a character generator for generating characters including a photographing date and time to be written in an image picked up by the camera device and writing the characters in the image. .

[0017] In the moving object photographing apparatus according to the present invention, the light emitting unit may emit the white light in a pulsed manner to the photographing range. A trigger generator integrally formed with the camera device, which outputs a delay trigger for stopping the writing of the image data by the overwriting recording unit by the writing stop means after a lapse of time.

A moving object photographing apparatus according to the present invention is characterized in that an overwrite recording section, a write stop section, a recording storage section, and a delay trigger superimposed on a synchronization signal of a video signal output from a camera apparatus, An image recording apparatus having a trigger separating circuit for separating the delay trigger from the video signal output from the camera apparatus, and a trigger generator outputs the delayed trigger to the image recording apparatus. It was done.

According to the present invention, there is provided a moving object photographing monitoring system, comprising: a camera device for continuously taking an image of an image pickup range; A light emitting unit that irradiates the image data in a pulsed manner, an overwrite recording unit that continuously writes image data of the imaging range captured by the camera device in a limited storage area in an endless form, and the image data by the overwrite recording unit. From the time when the moving object is detected.
Writing stop means for stopping the writing after the lapse of time, and the overwriting recording section for a second time period from when the writing stopping means stopped writing the image data by the overwriting recording section. A plurality of photographing apparatuses each including a recording storage unit that records image data written to the recording area; a server that collects, stores, and manages image data recorded in the recording storage unit of each of the photographing apparatuses; And a network connected to the server.

According to the present invention, there is provided a moving object photographing monitoring system, comprising: a light emitting unit for emitting a white light in a pulsed manner to a photographing range; a light emitting command given to the light emitting unit; After the time elapses, a trigger generator for outputting a delay trigger for stopping the writing of the image data by the overwriting recording unit by the writing stop means is formed integrally with the camera device.

According to another aspect of the present invention, there is provided a moving object photographing monitoring system, comprising: an overwrite recording unit, a writing stop unit, a recording storage unit, and a delay trigger superimposed on a synchronization signal of a video signal output from a camera device. A trigger separation circuit for separating the video signal from the camera device and the light emitting unit, and a trigger generator outputs the delay trigger to the synchronization signal of the video signal output from the camera device. Is output in such a manner as to be superimposed on.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is an explanatory diagram illustrating a relationship between a camera device and a light emitting unit in a photographing apparatus to which the moving object photographing method according to the first embodiment is applied, and a vehicle that is a moving body. In the figure, reference numeral 1 denotes a vehicle as a moving body, and 2 denotes a camera device for photographing a front surface of the vehicle, particularly, a license plate and a driver. The camera device 2 is not an infrared camera device that can shoot an infrared image, but a normal camera device that shoots a subject with white light, and always continuously captures an image of a shooting range. Reference numeral 3 denotes a light emitting unit that emits white light in a pulsed manner, and includes, for example, a white light strobe light source. Further, it can be configured such that the light is not emitted during the daytime based on the day / night identification signal or the illuminance detection signal, and is emitted only at night or during the daytime when the illuminance of the shooting range falls below a predetermined value. In addition,
In the light emitting section 3, since the white light strobe light source emits light in a pulsed manner, even if the white light strobe light source is operated continuously, the average value of power consumption for emitting the white light strobe light source is low. It is. 4 is a camera device 2
And a photographing range in which a clear image can be obtained. 5 is an irradiation area of white light emitted from the light emitting unit 3;
Reference numeral 6 denotes a boundary between the road surface where the vehicle 1 passes and the road shoulder, and reference numeral 7 denotes an optical axis indicating the direction of the lens line of sight of the camera device 2.

FIG. 2 is a block diagram showing the configuration of the photographing apparatus according to the first embodiment. In the figure, reference numeral 11 denotes a moving body detection unit, which is not shown but is closed and openable at a moving body detection position shown in FIG. 1 and temporarily stops the vehicle 1 moving on the road. A contact provided on a gate for causing the light beam to output a trigger signal when the gate opens, or such that the light beam traverses the road at the moving object detection position shown in FIG. A photoelectric tube device in which a light projecting unit and a light receiving unit are disposed, and a number of configurations are adopted, such as a configuration in which a contact on the light receiving unit outputs a trigger signal at a timing when a moving object passes through the moving object detection position. It is possible.

Reference numeral 21 denotes a photographing device, which includes the camera device 2 and the light emitting unit 3, and further includes a synchronization signal separating unit 31, a light emitting timing generating unit 33, a light emitting period generating unit 32, and a character generating unit 3.
4. Continuous image compression unit 35, delay unit 36, overwrite recording unit 3
7, a transfer range setting unit 38, a recording storage unit 39, and the like. The synchronization signal separation unit 31 separates and extracts a vertical synchronization signal of a video signal output from the camera device 2. The light emission period generation unit 32 generates a light emission permission signal that permits pulse driving of the white strobe light source of the light emission unit 3. This light emission permission signal is output while the light emission permission time T1 (for example, the time for one frame) elapses from the trigger generation time. The light emission timing generation unit 33 generates a light emission command from a logical product of the light emission permission signal and a vertical synchronization signal of a video signal output from the camera device 2. Character generator 3
Numeral 4 is for writing characters such as the date, time, and the like, for example, on the image captured by the camera device 2.

The continuous image compressing section 35 digitizes the video signal photographed by the camera device 2, compresses the video signal one frame at a time, outputs it as one image data, reduces the data amount of the image data, and stores the image data. This improves the use efficiency of the recording unit. Delay section (writing stop means)
36 specifies a time (first time) T2 (T2 ≦ T1) from the trigger generation time to the stop of the image data recording operation. When the time T2 elapses from the trigger generation time, the delay trigger D1 is set. Output to the overwrite recording unit 37,
The image data recording operation is stopped. Overwrite recording unit 37
Records the image data endlessly in a finite length storage area by continuously overwriting the compressed image data in the shooting range continuously imaged by the camera device 2 in order from the oldest image file. Things.

The transfer range setting section 38 performs a predetermined time (second time) T3 (T3) from the time when the recording of the image data is stopped.
.Gtoreq.T2) The image files recorded in the overwriting recording section 37 which have been traced back are transferred from the overwriting recording section 37 to the recording storage section 39. The recording storage unit 39 stores the image file transferred from the overwrite recording unit 37.

Next, the operation will be described. FIGS. 3 and 4 are timing charts showing the operation of the photographing apparatus shown in FIG. 2. FIG. 4 transfers an image file recorded endlessly to a finite-length recording area of the overwriting recording unit 37 to the recording storage unit 39. The operation at the time of saving is shown. FIG.
(A) is a video signal output from the camera device 2, (b) is a synchronization signal (Vsync) separated and extracted from the video signal by the synchronization signal separation unit 31, and (c) is a moving vehicle. The trigger waveform output from the mobile unit detection unit 11 at the timing of detecting is shown. FIG. 3D is a light emission permission signal generated by the light emission period generation unit 32, and FIG. The light emission commands P1, P2, P3,... Generated by the light emission timing generation unit 33 by taking the logical product of the synchronization signal and the light emission permission time T1 generated by the light emission period generation unit 32, FIG. Continuous image compression unit 35
(G) shows a state in which an image file composed of the compressed image data for one frame is endlessly recorded in a finite length recording area of the overwriting recording unit 37. Is shown.

FIG. 4A shows a trigger waveform output from the moving body detecting section 11 at the timing when the vehicle 1 as a moving body is detected, and FIG. 4B shows a delay section 36 for stopping the recording operation of the image data. When the time T2 elapses from the trigger generation time, the delay trigger D1 output from the delay unit 36 stops the image data recording operation in the overwrite recording unit 37. FIG. 3C shows an image file after the trigger occurrence time recorded endlessly in the recording area of the overwrite recording unit 37 frame by frame, and FIG.
Is an image file transferred and recorded to the recording storage unit 39,
FIG. 7E shows an image file to be reproduced.

In the photographing apparatus according to the first embodiment, the camera apparatus 2 always performs continuous photographing. Therefore,
In the synchronization signal separation section 31, a vertical synchronization signal of a video signal output from the camera device 2 is constantly extracted. on the other hand,
In the moving body detection unit 11, the gate is opened or the vehicle 1
No trigger is generated unless is detected. For this reason, unless the trigger is output from the moving object detection unit 11, the light emission period generation unit 32 does not output the light emission permission signal. When the gate is opened or the vehicle is detected, the moving body detection unit 11 outputs a trigger as shown in FIG. When a trigger is output from the moving object detection unit 11, the light emission period generation unit 32 outputs a light emission permission signal as shown in FIG. 3D until the time T1 elapses from the time when the trigger is output. I do. As a result, the light emission timing generation unit 33 generates and outputs a light emission command whose output timing matches the vertical synchronization signal of the video signal while the light emission permission signal is being output, as shown in FIG. And
The white light strobe light source of the light emitting section 3 emits light in accordance with this light emission command only at night or in the daytime when the illuminance of the shooting range is low. The white light emitted from the light emitting unit 3 illuminates the front part of the vehicle 1 as shown in FIG.

On the other hand, the video signal output from the camera device 2 is input to a character generation unit 34, in which characters such as shooting date, time, and the like are written at a predetermined position of the image, and output to a continuous image compression unit 35. You. In the continuous image compression section 35, the video signal is compressed one frame at a time, output as one image data, and recorded in the overwrite recording section 37 endlessly. In this case, the image data is recorded by overwriting the image data by successively overwriting the oldest image file with the image data to be recorded, as shown in FIG. It is recorded endlessly in a finite length storage area of the unit 37.

When the time T2 elapses from the trigger generation time, the recording of the compressed image data in the overwrite recording unit 37 is performed by the delay trigger D1 output from the delay unit 36 as shown in FIG. Stop. In FIG. 4C, the light emitting unit 3 illuminates with white light until the recording of the compressed image data in the overwriting recording unit 37 is stopped after the time T2 elapses from the trigger generation time when the vehicle 1 is detected. Image files A, B, C, D,
E indicates that a total of five images have been recorded.

When the recording of the compressed image data in the overwriting recording section 37 is stopped, the transfer range setting section 38 informs the delay section 36 that the time T2 has elapsed since the trigger generation time.
4C, and a predetermined time T from the time when the recording of the image data is stopped as shown in FIGS.
The image files recorded in the overwrite recording section 37 for three times are transferred from the overwrite recording section 37 to the recording storage section 39. In this case, the image files are sequentially transferred to the recording storage unit 39 in the order near the time at which the recording to the overwrite recording unit 37 stopped, that is, the order of writing to the overwrite recording unit 37 is newer. Record in order from. When reproducing image files recorded sequentially from the head recording area of the recording storage unit 39, the image files are read out from the head recording area of the recording storage unit 39 in order and reproduced.

In the above description, the white light strobe light source of the light emitting section 3 emits light in accordance with the light emission command only when the illuminance of the shooting range is low even at night or in the daytime. The configuration may be such that the white light strobe light source of the light emitting section 3 emits light even when sufficient light is obtained. The synchronization signal separation unit 31 separates and extracts the vertical synchronization signal of the video signal output from the camera device 2, but separates and extracts a specific horizontal synchronization signal for each field of the video signal. The configuration may be as follows.

As described above, according to the first embodiment, when a moving object is detected, after detecting the moving object, time T
2 is continuously taken until the time elapses, and the overwriting recording unit 3
7, the image data overwritten in order from the oldest image file already recorded to the overwriting recording unit 3 by the time T3 from the time when the time T2 has elapsed.
7 so that continuous image data of the moving object before and after the timing of detecting the moving object can be recorded, and even if the depth of focus of the camera device is shallow, the continuous image data of the moving object can be recorded. Includes a clear image of the moving object without fail, and has an effect of obtaining a moving object photographing method and a photographing apparatus capable of recording a clear image of the moving object.

Further, since the white light is emitted to the front of the vehicle 1 by the white light strobe light source and the license plate of the vehicle and the driver can be captured as a color image, information of the subject including the color of the vehicle and the clothing of the driver can be obtained. There is an effect that a method and an apparatus for photographing a moving object that can be easily collected are obtained.

In addition, since a normal camera device 2 for photographing a subject with white light can be used instead of an infrared camera device capable of photographing an infrared image, the price of the camera device does not become high and the cost of the entire system increases. This has the effect of obtaining a moving object imaging method and an imaging device capable of suppressing the occurrence of a moving object.

Further, since the light emitting section 3 emits white light in a pulsed manner, it stimulates the driver's vision of the vehicle 1 unlike the infrared ray irradiation. When installed near the gate, there is an effect that a method and apparatus for capturing an image of a moving body that are effective to warn or warn the driver are obtained.

Further, since the photographed date, time, and the like are also imprinted on the reproduced image data image, the management of the image file is facilitated, and the image file can be retrofitted without monitoring the vehicle in real time. It is also possible to monitor a vehicle while reproducing the image, and it is possible to obtain a moving object photographing method and a photographing device which are highly convenient even when used as a monitoring device.

Embodiment 2 FIG. 5 shows the first embodiment.
2 is a block diagram showing a configuration of an imaging monitoring system according to Embodiment 2 of the present invention using the imaging method and imaging apparatus for a moving object. In the drawing, the same or corresponding parts as in FIG. Description is omitted. In the figure, reference numeral 41 denotes a camera unit, which is a camera device 2 capable of capturing an image of a subject with white light and a trigger generator for generating a trigger for defining a detection timing of a moving object, a delay trigger D1 described in the first embodiment, and the like. 43. 44 is a time generator for generating time information. 4
Reference numeral 6 denotes an image recording device, which includes a trigger separation circuit 45;
It includes an overwrite recording unit 37, a recording storage unit 39, a transfer range setting unit 38, and the like shown in FIG.

Reference numeral 51 denotes a first photographing device including the moving object detecting unit 11, the camera unit 41, the light emitting unit 3 having a white light strobe light source, the time generator 44, the image recording device 46, and the like. The vehicle is installed near the tollgate and is used for photographing and monitoring vehicles passing through the tollgate. Reference numeral 52 denotes a second photographing device having the same configuration as that of the first photographing device 51, for example, the first photographing device 51.
Is installed in the vicinity of another tollgate gate adjacent to the tollgate gate in which the photographing device 51 is installed, and monitors images of vehicles passing through the tollgate gate. 47 is L
It is an AN (Local Area Network), and connects the first photographing device 51, the second photographing device 52, and the server 48. The server 48 stores the image data recorded in the image recording device 46 of the first photographing device 51 and the second photographing device 52 in a memory 49 such as a hard disk via the LAN 47. Reference numeral L1 denotes a two-core cable connected between the camera unit 41 and the light emitting unit 3 having the white light strobe light source, and is generated by the power supply wiring of 100 VAC and the trigger generator 43 in FIG. And a strobe trigger wiring for sending a strobe trigger corresponding to the light emission command shown in FIG. Reference symbol L2 denotes a broadband cable such as a coaxial cable connected between the camera unit 41 and the time generator 44. The video signal output from the camera device 2 is transmitted to, for example, a vertical synchronizing signal as shown in FIG. By superimposing D1, it is possible to transmit the video signal output from the camera device 2 and the delay trigger D1 via one broadband cable L2.

Next, the operation will be described. Camera unit 41 of first photographing device 51 and second photographing device 52
Camera device 2 always photographs each toll gate. For this reason, even if there is no vehicle 1 passing through the toll gate and the vehicle 1 is not detected by the moving object detection unit 11, a video signal is output from the camera device 2, and this video signal is output from a broadband cable. It is sent to the time generator 44 by L2. The time generator 44 writes the shooting date and time to the image of the toll gate captured by the camera device 2 of the first imaging device 51 and the second imaging device 52. A video signal in which the date and time of shooting are written on the image of the toll gate is sent to the image recording device 46. In the image recording device 46, the image data of the toll gate in which the shooting date, time, and time are written in the overwriting recording unit 37 frame by frame is overwritten from the old image file to the old image file first and endlessly. Has been recorded. In this case, as long as the moving object detecting unit 11 does not detect the vehicle 1, the image data is only recorded endlessly in the overwriting recording unit 37 frame by frame and transferred to the recording storage unit 39 of the image recording device 46. Not done.

Next, when the moving body detecting section 11 detects the vehicle 1, the moving body detecting section 11 outputs a trigger shown in FIG. FIG. 4 is a diagram illustrating a trigger generator 43 in which the output timing coincides with the vertical synchronizing signal of the video signal output by the camera device 2 from the time when the trigger is output from the moving object detection unit 11 until the time T1 elapses. 3 (e)
Is output to the light-emitting unit 3 via the strobe trigger wiring of the cable L1. As a result, the white light strobe light source of the light emitting section 3 emits light in synchronization with the light emission command. When a time T2 elapses from the time when the trigger is output from the moving object detection unit 11, the trigger generator 43 converts the video signal output from the camera device 2 into a vertical synchronization signal as shown in FIG. Is superimposed on the high-level delay trigger D1, and the high-level delay trigger D1
The video signal superimposed with 1 is output to the time generator 44 via the broadband cable L2. The time generator 44 writes the shooting date and time on the image of the video signal, and outputs the video signal to the image recording device 46. The trigger separation circuit 45 of the image recording device 46 separates the delay trigger D1 from the video signal, and outputs the separated delay trigger D1 and the video signal from which the delay trigger D1 has been separated. In the image recording device 46, until the delay trigger D1 is separated from the trigger separation circuit 45, the camera device 2
Although the image data of the video signal output from is recorded endlessly in the overwrite recording unit 37, when the delay trigger D1 is output from the trigger separation circuit 45, the recording is stopped at that point. On the other hand, the image files recorded in the overwriting recording unit 37 for the time period T3 from the time when the recording was stopped by the time T3 specified by the transfer range setting unit 38 are shown in FIGS. ) Is transferred to the record storage unit 39.

The above operation is performed in the same manner in the second photographing device 52, and the recording and storage section 39 of the image recording device 46 in the first photographing device 51 and the second photographing device 52.
The image file transferred to the
The data is collected through the memory 47 and stored in the memory 49 and managed.

In the above description, the trigger generator 43 has been described as superimposing the high-level delay trigger D1 on the vertical synchronizing signal of the video signal output from the camera device 2. A configuration may be adopted in which a high-level delay trigger D1 is superimposed on the horizontal synchronization signal of the video signal being output.

As described above, according to the second embodiment, the server 48 transmits the image file photographed by the first photographing device 51 or the second photographing device 52 to the LAN 47 at the highway management office or the like. The image data can be collected and stored in a memory 49 such as a hard disk, so that the image file can be easily stored and managed.
Since only a broadband cable such as a coaxial cable needs to be laid between the image recording device 46 and the image recording device 46, there is an effect that a photographing monitoring system capable of reducing construction material costs and construction costs can be obtained.

[0046]

As described above, according to the present invention, after detecting a moving object in the image data continuously and endlessly written in the storage area,
Since the image data of the image taken from when the first time elapses to when the second time goes back is acquired as an image of the moving object, the image data before and after the time when the moving object is detected are acquired. It is possible to record continuous image data of the moving object, and even if the depth of focus of the camera device is shallow, a clear image of the moving object is surely included in the continuous image data, and There is an effect that a color image of the moving object can be reliably obtained.

According to the present invention, the camera device always continuously writes the image data in the imaging range continuously imaged in the storage area in the endless form by the overwriting recording section, and the image data of the image data is written by the overwriting recording section. The writing is stopped by the writing stop means after a first time has elapsed since the detection of the moving object, and the overwriting recording unit is provided for a second time period after the writing of the image data is stopped. Is configured to record the image data written in the recording area by the recording storage unit, so that it is possible to record continuous image data of the moving object before and after the detection of the moving object, and the depth of focus of the camera device. Even if the depth is shallow, a clear image of the moving object is surely included in the continuous image data, so that a clear color image of the moving object can be reliably obtained. There is.

According to the present invention, since the light emitting section for irradiating a white light in a pulsed manner to the photographing range where the camera device picks up an image based on the detection of the moving body is provided, the image pickup can be performed using the white light as a medium. Since the camera device can be used, the price of the camera device can be reduced, the price of the entire system can be reduced, and the moving body can be captured as a color image.

According to the present invention, the white light is radiated in a pulsed manner to the photographing range of the camera device in synchronization with the synchronizing signal of the video signal output from the camera device. The use of a camera device that performs imaging through the media allows the cost of the camera device to be reduced, the cost of the entire system to be reduced, and the illumination by white light in synchronization with the video signal, so that There is an effect that a clear bright color image can be captured.

According to the present invention, since the white light is radiated to the photographing range in a pulsed manner in synchronization with the vertical synchronizing signal of the video signal output from the camera device, the imaging is performed using the white light as a medium. Because the camera device can be used, the price of the camera device can be suppressed, the price of the entire system can be reduced, and the illumination with white light can be performed in synchronization with the field or frame of the video signal. There is an effect that a bright color image can be captured.

According to the present invention, there is provided a configuration in which white light is radiated to the photographing range in a pulsed manner in synchronization with a synchronization signal of a video signal from when the moving object is detected until the third time elapses. As a result, since the camera device that performs imaging using white light as a medium can be used, the price of the camera device can be reduced, the price of the entire system can be reduced, and the detected moving object can be converted into a video signal. Since illumination with white light can be performed in synchronization, a clear and bright color image of the moving object can be captured.

According to the present invention, a configuration is provided in which white light is radiated in a pulsed manner at a low illuminance even in the nighttime or in the daytime to the shooting range where the camera device picks up an image. However, since the detected moving object can be illuminated with white light in synchronization with the video signal, a clear and bright color image of the moving object can be captured.

According to the present invention, a configuration is provided in which the image data in the image pickup range picked up by the camera device is overwritten in order from the oldest image file in the finite-length storage area to write endlessly to the storage area. Therefore, continuous image data of the moving body before and after the time when the moving body is detected can be reliably recorded in the storage area, and even if the depth of focus of the camera device is shallow, the continuous image data may be included in the continuous image data. A clear image of the moving object is surely included, and there is an effect that a clear color image of the moving object can be reliably obtained.

According to the present invention, a configuration is provided in which the compressed image data of the image pickup range picked up by the camera device is endlessly overwritten on the storage area of a finite length, so that the storage area can be effectively used. The continuous image data of the moving object before and after the time when the moving object is detected can be reliably recorded in the storage area, and even if the depth of focus of the camera device is shallow, the moving image is not included in the continuous image data. A clear image of the body is surely included, and there is an effect that a clear color image of the moving body can be reliably obtained.

According to the present invention, a configuration is provided in which characters including the shooting date, time, and the like are written in the image captured by the camera device, so that the cost of the entire system can be reduced and the moving body can be reduced. It is possible to take an image as a color image in which characters including the shooting date and time are written, so that a clear color image of a moving object can be obtained reliably.

According to the present invention, the trigger generator for outputting the light emission command and the delay trigger is integrally formed with the camera device, so that the light emission command provided to the light emitting unit disposed near the camera device can be highly reliable. And a clear and bright color image of a moving object can be reliably obtained.

According to the present invention, the overwrite recording section, the write stop section, the recording storage section, and the trigger separation circuit are configured in the image recording apparatus, and the delay trigger is superimposed on the synchronization signal of the video signal output from the camera apparatus. Output to the image recording device and the trigger separation circuit is configured to separate the delay trigger from the video signal, so that the video signal is transmitted between the image recording device and the camera device. It is only necessary to connect with a single broadband cable, so that construction material costs and construction costs can be reduced, and the cost of the entire system can be reduced.

According to the present invention, a plurality of photographing devices each including a camera device, a light emitting unit, an overwriting recording unit, a writing stop unit, and a recording storage unit, and an image recorded in the recording storage unit of each of the photographing devices. It is configured to include a server that collects and stores and manages data, and a network that connects the photographing device and the server, so that the server can collect and manage the image data recorded in the recording and storage unit. It is possible to prevent the body from being overlooked, and it is possible to surely monitor the moving body.

According to the present invention, the trigger generator for outputting the light emission command and the delay trigger is integrated with the camera device, so that the light emission unit disposed near the camera device emits the light. The command can be supplied with high reliability, a clear and bright color image of the moving object can be obtained reliably, and the monitoring of the moving object can be prevented.

According to the present invention, in the image recording device separated from the camera device and the light emitting section, the delay trigger is separated from the video signal output from the camera device. The device and the camera device can be connected by a single broadband cable for transmitting the video signal, so that construction material costs and construction costs can be reduced, and the cost of the entire system can be reduced. effective.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a relationship between a camera device and a light emitting unit in a photographing apparatus to which a moving object photographing method according to a first embodiment of the present invention is applied, and a vehicle that is a moving body.

FIG. 2 is a block diagram illustrating a configuration of a photographing apparatus according to Embodiment 1 of the present invention.

FIG. 3 is a timing chart illustrating an operation of the imaging device according to the first embodiment of the present invention;

FIG. 4 is a timing chart illustrating an operation of the image capturing device according to the first embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of an imaging monitoring system according to Embodiment 2 of the present invention.

FIG. 6 is a waveform diagram showing a video signal on which a high-level delay trigger is superimposed in a shooting monitoring system according to a second embodiment of the present invention.

FIG. 7 is a block diagram illustrating a configuration of a mobile object recognition system disclosed in Japanese Patent Application Laid-Open No. 11-167625.

FIG. 8 is a block diagram showing a configuration of a reflective LED lighting device disclosed in Japanese Patent Application Laid-Open No. 11-167625.

[Explanation of symbols]

1 vehicle (moving body), 2 camera device, 3 light emitting unit, 3
4 Character generation section, 36 delay section (writing stop means), 37
Overwrite recording unit, 38 Transfer range setting unit, 39 record storage unit, 43 trigger generator, 45 trigger separation circuit, 46
Image recording device, 47 LAN (network), 48
Server, 51 first imaging device, 52 second imaging device.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 7/18 H04N 5/781 510L (72) Inventor Hiromi Nanba 2-Chome Otemachi 2-chome, Chiyoda-ku, Tokyo No. 2 Mitsubishi Electric Engineering Co., Ltd. (72) Inventor Hiroaki Kato 2-6-2 Otemachi, Chiyoda-ku, Tokyo F-term (reference) 5C022 AA01 AB15 AC69 5C053 FA11 FA23 FA27 GA20 GA12 GB12 GB21 JA16 JA28 KA04 KA09 KA30 5C054 AA01 CA04 CC02 CE15 CH01 EA01 EA07 FB03 FC13 GB01 GB05 GC03 GD01 GD04 GD06 GD09 HA01 HA18

Claims (15)

[Claims] 1. An image processing apparatus according to claim 1, wherein image data of an imaging range which is continuously imaged is continuously and endlessly written to a storage area. A method of capturing a moving object, wherein the image data of the moving object is obtained as an image of the moving object, the image data being written endlessly in the recording area for an image taken up to a time when the time goes back. 2. A camera device which continuously and continuously captures an image of an image capturing range, and an overwrite recording unit which continuously and continuously writes image data of the image capturing range captured by the camera device to a limited storage area in an endless manner. Writing the image data by the overwriting recording unit,
Writing stop means for stopping after a first time has elapsed from the detection of the moving object; and a second time period from when the writing stop means has stopped writing of the image data by the overwriting recording unit. A recording storage unit for recording the image data written in the recording area by the overwriting recording unit. 3. The imaging apparatus according to claim 2, further comprising: a light emitting unit that irradiates a white light in a pulsed manner to a photographing range captured by the camera apparatus based on detection of the moving object. 4. The light emitting section emits white light in a pulsed manner to a photographing range to be imaged by the camera device, in synchronization with a synchronization signal of a video signal output from the camera device. The imaging device according to the above. 5. The photographing apparatus according to claim 4, wherein the light emitting section emits white light in pulses in synchronization with a vertical synchronization signal of a video signal output from the camera apparatus. 6. A light-emitting unit irradiates white light in a pulsed manner in synchronization with a synchronization signal of a video signal output from a camera device during a period from when a moving object is detected to when a third time elapses. The photographing apparatus according to claim 4, wherein the photographing is performed. 7. The light emitting unit according to claim 3, wherein the light emitting unit emits white light in a pulsed manner at a low illuminance even in the nighttime or in the daytime to a shooting range where the camera device captures an image.
The imaging device according to any one of claims 1 to 7. 8. An overwrite recording unit endlessly writes image data in an imaging range captured by a camera device in the storage area by overwriting the image data in order from the oldest image file in a storage area of a finite length. The imaging device according to any one of claims 2 to 7. 9. The photographing apparatus according to claim 8, wherein the overwriting recording unit endlessly overwrites the compressed image data of the image pickup range picked up by the camera device into a finite-length storage area. 10. A character generating unit for generating a character including a shooting date, time, and time to be written in an image picked up by a camera device and writing the character to the image. The imaging device according to any one of claims 1 to 7. 11. A light emitting command given to the light emitting unit for irradiating the light emitting unit in a pulsed manner with white light to the photographing area, and the overwriting recording unit after a first time has elapsed since the detection of the moving body. 11. The camera according to claim 2, further comprising a trigger generator integrated with the camera device for outputting a delay trigger for stopping the writing of the image data by the writing stop unit. The imaging device according to any one of claims 1 to 7. 12. An overwrite recording unit, a writing stop unit, a recording storage unit, and a trigger separation circuit for separating a delay trigger superimposed on a synchronization signal of a video signal output from a camera device from the video signal. 12. The image recording apparatus according to claim 11, further comprising an image recording device, wherein the trigger generator superimposes the delay trigger on a synchronization signal of the video signal output from the camera device and outputs the signal to the image recording device. Shooting equipment. 13. A camera device that continuously captures an image of an image capturing range, a light emitting unit that irradiates white light in a pulsed manner to the image capturing range captured by the camera device based on detection of a moving object, An overwrite recording unit that continuously writes image data of the imaging range captured by the camera device in a limited storage area in an endless form, and the writing of the image data by the overwrite recording unit detects the moving object. Writing stop means for stopping after a first time has elapsed from the first time, and the writing stop means stopping writing of the image data by the overwriting recording unit for a second time period, A plurality of photographing devices including a recording storage unit for recording the image data written to the recording area by the overwriting recording unit, and the image data recorded in the recording storage unit of each photographing device. Imaging monitoring system comprising a server for collecting save and manage, and a network that connects the said imaging device server. 14. A light-emitting command given to the light-emitting unit for irradiating the light-emitting unit with white light in a pulsed manner to the photographing range, and the overwriting recording unit after a first time has elapsed from the detection of the moving body. 14. The photographing monitoring system according to claim 13, wherein a trigger generator for outputting a delay trigger for stopping the writing of the image data by the writing stop means is integrated with the camera device. 15. An overwrite recording unit, a writing stop unit, a recording storage unit, and a trigger separation circuit for separating a delay trigger superimposed on a synchronization signal of a video signal output from a camera device from the video signal, An image recording device configured separately from the camera device and the light emitting unit, wherein a trigger generator superimposes the delay trigger on a synchronization signal of the video signal output from the camera device, and the image recording device 15. The photographing monitoring system according to claim 14, wherein the photographing monitoring system outputs the photographing result.