JPH06217316A - Automatic tracking monitoring device - Google Patents

Abstract

PURPOSE:To easily confirm the supervision of the entire parts and the discrimination of even a small object by providing a monitoring camera for monitoring the entire parts and a monitoring camera for tracking a mobile object. CONSTITUTION:A video signal picked up by a 1st monitoring camera 20 and a 2nd monitoring camera 30 is inputted to a video discrimination circuit 11 of a VTR 10, in which the signal is discriminated so that the video signal from the camera 30 enters a SW 2 and the video signal from the camera 20 is fed to a motion detection circuit 12. Then the circuit 12 detects a mobile object to discriminate at which part of the mobile object is moving. Then the area of a pattern of the part representing the locus of the mobile object discriminated by the circuit 12 is discriminated by a pattern area discrimination circuit 13. Thus, an importance discrimination circuit 14 discriminates for which position the camera 30 is moved based on the information decided by the importance having priority sequentially. Thus, the video of the camera 30 is photographed on a sequential pattern, that is, the position information of the camera 30 is calculated so as to be tracked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surveillance device system using a time-lapse magnetic recording / reproducing device (hereinafter referred to as "time-lapse VTR") and a surveillance camera, and more particularly to tracking or expanding a moving object using a plurality of surveillance cameras. The present invention relates to an automatic tracking monitoring device that records and reproduces data.

[0002]

2. Description of the Related Art Generally, a surveillance system takes a picture of a surveillance place by using, for example, a fixed surveillance camera, and observes the photographed image on a monitor, or a long-time VTR for a surveillance system (long-time VTR). The VTR used for recording / playback indicates a time-lapse VTR). That is, the image can be taken unattended and viewed and recorded at another place. Therefore, such a monitoring device system is mainly used, for example, for crime prevention, but is also used for various purposes such as patient monitoring in the medical field and machine control monitoring in the industrial field.

In such a variety of uses, for example, when a surveillance device system is used for crime prevention, the entire surveillance place is displayed and the image is displayed in a clear and distinguishable state. It is desirable that the moving object (human face or action being performed) is tracked or close-up and recorded so that the moving object can be distinguished and confirmed. By the way, the conventional monitoring device system is composed of a monitoring camera fixed as described above, a monitor capable of viewing an image projected by this monitoring camera, and a time-lapse VTR for recording / reproducing this image. For example, when monitoring and recording the surveillance place using these surveillance systems, the whole surveillance place is monitored and recorded by a fixed surveillance camera, or a plurality of surveillance cameras are provided and these cameras are switched to switch the whole surveillance place. It was monitored by dividing and displaying.

However, when the whole surveillance place is recorded on the monitor by using one fixed surveillance camera, the whole surveillance place is actually photographed so that the subject is photographed in a small size. Is more difficult to distinguish and check because it is moving, and when multiple surveillance cameras are used, the entire surveillance location is divided and these surveillance cameras are switched, so images of unnecessary locations are recorded. However, there was a defect that an important part could not be recorded.

[0005]

As described above, the conventional monitoring device has a drawback in that it is difficult to discriminate small areas when the whole is monitored and important portions cannot be recorded when the monitoring location is limited.

Therefore, the present invention has been made in view of the above problems, and an object thereof is to provide an automatic tracking monitoring device capable of easily monitoring and checking a small area of a moving object as a whole.

[0007]

SUMMARY OF THE INVENTION An automatic tracking monitoring device according to the present invention is capable of freely imaging a first monitoring camera for imaging a monitoring area in a predetermined range and a part of the range imaged by the first monitoring camera. At least one possible second surveillance camera, motion detection means for detecting a moving body from the first surveillance camera image, and information obtained by this motion detection means is imaged by the first surveillance camera. Determination means for determining the area of the position of the moving body in the range, and control means for controlling the second monitoring camera so that the second monitoring camera identifies and images the moving body based on the determination result of this determination means. And a recording means for recording the video signal captured by the first surveillance camera and the video signal captured by the second surveillance camera on a recording medium.

[0008]

In the present invention, by using a surveillance camera for monitoring the whole and a surveillance camera for tracking a moving object,
It is possible to easily monitor the whole body and easily perform actions and discrimination of moving objects.

[0009]

EXAMPLES Examples will be described with reference to the drawings. FIG. 1 shows an embodiment of an automatic tracking monitoring device according to the present invention,
It is a block diagram which shows schematic structure. In FIG. 1, the automatic tracking monitoring device 1 includes, for example, a fixed first monitoring camera 20 that captures an image of the entire monitoring area or a monitoring area in a predetermined range, and a part of the range captured by the first monitoring camera 20. Second monitoring camera 30 provided with at least one that is capable of capturing an image, and automatically controlling these monitoring cameras 20 and 30, and recording and reproducing the video imaged by the monitoring camera for a long time. Time-lapse VTR
10 and a monitor 40 for displaying an image from the surveillance camera when monitoring and for displaying an image recorded by the time-lapse VTR 10.

The automatic tracking monitoring device 1 configured as described above
Is configured to capture an image of the whole or a predetermined range of surveillance location by the first surveillance camera 20 which is fixedly mounted, and supplies the captured video signal to the time-lapse VTR 10 connected thereto. .

Further, at least one or more second monitoring cameras 30 are mounted so as to interlock with the first monitoring camera 20 and have a rotation drive unit (not shown) which is movable in the vertical and horizontal directions. ing. That is, in order to track the moving body imaged within the image range imaged by the first surveillance camera 20, the second surveillance camera 30 can be freely photographed by the rotation driving unit. Further, the second surveillance camera 30 is provided with a drive lens (not shown) for performing lens adjustment by a power supply motor or the like in order to enlarge the subject to be imaged. Therefore, the second monitoring camera 30 having such a configuration supplies the captured video signal to the time-lapse VTR 10 via the first monitoring camera connected thereto.

On the other hand, as the time-lapse VTR 10,
At the time of recording / reproducing in the time-lapse mode, a video signal is sampled and extracted, and the extracted video signal is driven by a magnetic tape that is driven to repeat running and stopping in synchronization with the sampling timing. We are recording. Further, in the present embodiment, the video signal input thereto is discriminated, and for example, when a moving object is present in this image, the first camera control signal is sent so as to track or magnify the moving object. To the second monitoring camera 20 and the second monitoring camera 30. In addition, the video signal obtained by these functions is recorded as described above, and at the time of reproduction, the reproduction signal of this video is output to the monitor 40, and the recorded video can be viewed by displaying on the monitor 40. .

The schematic configuration of the automatic tracking monitoring device 1 has been described above, and will be described in more detail with reference to FIG.
FIG. 2 shows an embodiment of the automatic tracking monitoring device 1 according to the present invention, and is a block diagram showing a main part of the automatic tracking monitoring device 1. In FIG. 2, the time-lapse VTR 10 which is a requirement for the configuration of the automatic tracking monitoring device 1 of the present invention is, for example, the first
The video signals picked up by the surveillance camera 20 and the second surveillance camera 30 are input. This video signal is switched between the first camera video and the second camera video by the switch SW1 included in the first surveillance camera 20, and either one of the video signals is input.

The time-lapse VTR 10 discriminates the input video signal into a first camera video and a second camera video, and supplies it to the switch SW2 when it discriminates the second camera video. When it is determined that the image is the first camera image, the image determination circuit 11 to be supplied to the motion detection circuit 13 and the first camera image signal from the image determination circuit 11 are input. When a moving body is present, this moving body is detected, the first camera image is divided into n as shown in FIG. 3, and the moving detection circuit 12 for discriminating at which part the moving body is moving; A screen area determination circuit 13 for determining the area of the screen with respect to the portion indicating the locus of the moving body which is input from the motion detection circuit 11 and is determined by the motion detection circuit 11, and this screen For example, when the rear determination circuit 13 detects a moving body in an area where the moving body has two or more loci, at least one second monitoring camera 30 is provided based on information which is ranked in advance according to importance. According to the importance judging circuit 14 for judging whether or not it should be moved to the position and the information obtained by the importance judging circuit 14, the second surveillance camera 30 is moved to the position of the area of the first camera image, Alternatively, the control microcomputer circuit 15 outputs a camera control signal for enlarging the movement amount of the moving body. Further, although not shown, a terminal m for outputting a reproduction signal to a monitor 50 displaying a video image captured during reproduction or monitoring.
Is provided. On the other hand, the first surveillance camera 20 and the second surveillance camera 30 to which the camera control signal output from the control microcomputer circuit 15 is input are automatically controlled by this camera control signal. . This camera control signal is supplied to the switch SW1 included in the first surveillance camera 20, and further the second
It is also supplied to the rotation drive unit 32 or the drive lens 31 provided in the surveillance camera 30. Further, in the present embodiment, the third, fourth ... N monitoring cameras 4
0, and even in this case, these surveillance cameras 40 are constructed similarly to the above-mentioned second surveillance camera 30, and the camera control signal is also supplied.

Next, the operation of the automatic tracking monitoring apparatus 1 of FIG. 2 in this embodiment will be described with reference to FIGS. 3 and 4. 3 and 4 show an automatic tracking monitoring device 1 according to the present invention.
3A and 3B are explanatory diagrams illustrating a trajectory of a moving body of the first camera image (A) and explaining a motion detection method, and FIG. 4 is an explanatory diagram illustrating a tracking method. 2 to 4, first, the time-lapse VTR 10 and the automatic tracking monitoring device 1 such as the first monitoring camera 20 and the second monitoring camera 30 are turned on. At the same time, the first surveillance camera 20 and the second surveillance camera 30 start imaging the surveillance location. These surveillance cameras 20, 30
The video signal captured by the
The video signal is input to the video discriminating circuit 11 provided in R10, and the video signal is discriminated from the first camera video and the second camera video. In this case, this video signal is supplied to the switch SW2 when it is determined that it is the second camera image, and is supplied to the motion detection circuit 13 when it is determined that it is the first camera image. In other words, the first surveillance camera 20 images the entire surveillance location, and therefore the presence of a moving object is determined in this image. Next, if a moving object is present in the first camera image (A), for example, the motion detecting circuit 12 detects the moving object, and as shown in FIG. 3, the first camera image (A) is detected. Is divided into n and at which part the moving body is moving is determined. That is, the portion showing the locus of the moving body is recognized as shown by the dashed arrow in FIG. Then, the screen area determination circuit 13 determines the area of the screen for the portion indicating the locus of the moving body determined by the motion detection circuit 11. Therefore, the area in this case is (N → J → K → L → H → I →
It becomes E), and seven areas can be detected.
In other words, since the screen area determination circuit 13 detects the trajectory of the moving body in two or more areas, the importance determination circuit 14 sets at least one second monitoring camera 30 in order of importance in advance. The position to move to is determined based on the determined information. Therefore, in the present embodiment, the second camera image is displayed in the area (N → J → K → L → H) of this sequential screen.
The position information of the second surveillance camera 30 is calculated so that imaging can be performed by (→ I → E), that is, tracking can be performed. Further, the control microcomputer circuit 15 generates a camera control signal based on the information obtained by the importance determination circuit 14, and outputs the camera control signal to the first monitoring camera 20 and the second monitoring camera 30. Therefore, the second surveillance camera 30 is placed at the position of the area of the first camera image, that is, the area of the screen showing the trajectory of the moving body.
It is moved up and down, left and right by the rotation drive unit 32 so that the image can be captured, and is adjusted by the drive lens 31 so that it can be enlarged corresponding to the amount of movement of the moving body. In short, as shown in FIG. 4, the second camera image captures the image of the first camera image area (N → J → K → L → H → I → E). Of course, when the number of moving objects is small, the second surveillance camera 30 can be enlarged to catch an object more clearly, and when the amount of movement is large, the enlargement can be stopped so that the whole can be seen. . In addition, the control signal from the control microcomputer circuit 15 is the image discrimination circuit 11
Also, it is supplied to the switch SW2, and further, by this camera control signal, when there is no moving object in the surveillance place, for example, the image discriminating circuit 11 feeds back so as to discriminate. On the other hand, when recording, the switch SW2 is used so that the finally tracked or enlarged second camera image can be sequentially recorded with the first camera image.
Are in control.

Therefore, as described above, the automatic tracking monitoring apparatus 1 specifies the moving body based on the entire surveillance place imaged by the first surveillance camera 20 or the image of a predetermined range and tracks or magnifies the image. It is possible to automatically control and record / reproduce at least one second surveillance camera 30 provided.

Next, a recording method of the automatic tracking monitoring device 1 will be described with reference to FIGS.

FIG. 5 shows an automatic tracking monitoring device 1 according to the present invention.
FIG. 4 is an explanatory diagram illustrating an example of the present invention and illustrating a video recording method. 4 to 5, as a recording method, by using the switch SW2 as described above, for example, when a moving object exists at the monitoring place, the first control is performed by the camera control signal from the control microcomputer circuit 15. The camera image signal and the final tracked or enlarged second camera image signal are sequentially switched and recorded in a video recording unit (not shown). That is, as indicated by the solid line arrow in FIG. 4, the first camera image (A, a screen showing the entire surveillance place or a predetermined range) and the second camera image (N to E) determined based on this image. , The screen of the moving body that has been tracked or enlarged) will be recorded alternately. Therefore, in this embodiment, (A → N → A
→ J → A → K → A → L → A → H → A → I → A → E), and it is possible to record in this way. Further, the video track of the video tape 60 at the time of recording is as shown in FIG. 5, for example, since the video signals of the first camera and the second camera are alternately switched,
Although not shown, the rotary head records an image (A) of the first camera for one field, and then sequentially records an image of the second camera (N to E).

In this embodiment, the method of recording the images of the first and second cameras alternately by using one time-lapse VTR is described as the recording method, but the present invention is not limited to this. For example, two time-lapse V
A method of separately recording the first camera image and the second camera image by using TR at the same time may be used.

Further, in the present embodiment, although not particularly described as a surveillance camera, a camera having a durable system and having a high-speed automatic focal length function for immediately catching a moving body and a camera having an automatic exposure function are used. Also, a camera with good image quality of images taken with any light source,
Of course, the effect can be obtained even when an infrared camera using infrared rays is used.

[0021]

As described above, according to the present invention, it is possible to easily monitor the whole surveillance place and to confirm the action performed therein and the moving object, and obtain a video as a powerful clue or evidence of crime. be able to.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a schematic configuration of an embodiment of an automatic tracking monitoring device according to the present invention.

FIG. 2 is a block diagram showing an embodiment of an automatic tracking monitoring device according to the present invention and showing a main part of the automatic tracking monitoring device.

FIG. 3 is an explanatory diagram illustrating an embodiment of an automatic tracking monitoring device according to the present invention and explaining a motion detection method. FIG. 4 is an explanatory diagram for explaining the tracking method.

FIG. 4 is an explanatory diagram illustrating an example of an automatic tracking monitoring device according to the present invention and illustrating a tracking method.

FIG. 5 is an explanatory diagram illustrating an example of an automatic tracking monitoring device according to the present invention and illustrating a video recording method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Automatic tracking monitoring apparatus 10 ... Time lapse VTR 11 ... Image determination circuit 12 ... Motion detection circuit 13 ... Screen area determination circuit 14 ... Importance level determination circuit 15 ... Control microcomputer circuit 20 ... First monitoring camera 30 ... Second monitoring Camera 31 ... Drive lens 32 ... Rotation drive unit 40 ... Nth surveillance camera 50 ... Monitor 60 ... Video tape SW1, SW2 ... Switch

Claims (1)

[Claims] 1. A first surveillance camera for imaging a surveillance area in a predetermined range, and at least one second surveillance camera capable of freely imaging a part of the range imaged by the first surveillance camera. Motion detection means for detecting a moving body from the image of the first surveillance camera, and determination means for determining the area of the position of the moving body in the range imaged by the first surveillance camera from the information obtained by the movement detection means. A control means for controlling the second surveillance camera such that the second surveillance camera identifies and images the moving body based on the determination result of the determination means; and a video signal captured by the first surveillance camera. And the second
An automatic tracking monitoring device, comprising: a recording unit that records a video signal picked up by the monitoring camera of 1. in a recording medium.