JPH0854667A - Automatic monitoring equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record images only in the case of a person after identifying whether or not a moving body is a person by using a video processing technique. SOLUTION: This device is provided with a camera part 16 for outputting video signals while monitoring the person, a panning/tilting part 18 provided in the camera part 16 for driving the camera part 16, a 4-screen divider 13 for receiving the video signals from the camera part 16, dividing them into four screens and outputting the video signals, an automatic monitoring controller 10 for receiving the video signals of the 4-screen divider 13, judging whether or not the moving body is a person and outputting appropriate control signals from that and an image recorder 11 for receiving the control signals of the automatic monitoring controller 10 and recording the screen of a monitor 12.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an automatic monitoring device. More specifically, the human face identification function using the video signal processing technology, the tracking function, the four-screen division function, the recorder control function, the zoom lens control function, and the pan / tilt function.
The present invention relates to an automatic monitoring device having a (Pan / Tilt) control function and a power supply control function.

[0002]

2. Description of the Related Art Conventionally, surveillance cameras have been used to monitor humans, and if only the background is recorded when there are no humans, not only is the recording medium (tape, etc.) wasted, but also the search time for the monitored video is lost. It is not preferable because it becomes longer.

In order to prevent such useless recording,
There is known a technique in which an infrared sensor or the like is provided in a surveillance camera and recording is started when an object is detected by the sensor. Further, as a monitoring device for tracking and monitoring the sensed object, there are a tracking device using a sensor and the like and a tracking device using a video signal.

However, in the conventional surveillance camera as described above, since the moving object sensed by the infrared sensor is simply photographed, animals other than human beings and fallen leaves are also sensed as moving objects. The disadvantage is that the shooting operation is repeated.

Further, since the tracking device does not perform real-time tracking and does not have a zoom-up function for humans and their faces, the size of humans and their faces displayed on the screen is small, and the discriminating power is sufficient for practical use in criminal investigation. Is rarely obtained. Furthermore, since the amount of recording of the meaningless background screen is large, the search time becomes long. Moreover, there is a disadvantage that a large amount of monitoring power is required because the monitoring person must constantly monitor during the search.

[0006]

SUMMARY OF THE INVENTION Therefore, in order to solve the above-mentioned conventional problems, the object of the present invention is to use an image processing technique and not record when there is no moving body, and when there is a moving body. After only recognizing the moving body and identifying whether the moving body is a human, if it is a person, it is recorded, the face part is identified to identify the person's impression, the face is closed up, An object of the present invention is to provide an automatic monitoring device capable of capturing impressions at various angles by calculating a moving direction and a velocity and continuously tracking the movement.

[0007]

As means for achieving the above object, the present invention provides a camera unit for monitoring a person and outputting a video signal, and a camera unit attached to the camera unit. In response to a pan / tilt unit for driving, a 4-screen divider for receiving a video signal from the camera unit and dividing the screen into four screens and outputting the video signal, and a video signal for the 4-screen divider. A monitor to display on the screen,
An automatic monitoring controller for receiving a video signal from the four-screen divider to determine whether or not the moving body is a person, and receiving a control signal from the automatic monitoring controller for outputting an appropriate control signal accordingly. A recorder for recording the screen of the monitor, a power supply controller for receiving a control signal of the automatic monitoring controller and outputting a zoom drive signal, and a pan / pan for receiving a control signal of the automatic monitoring controller. It consists of a tilt controller.

The automatic supervisory controller separates a sync signal from a video signal input from a camera, removes a color signal and performs analog / digital conversion, calculates a difference between pixels, and applies a threshold value to perform pixel processing. Between a video acquisition unit for converting into a possible digital binary signal and removing noise, a frame buffer memory for storing the noise-free digital video signal, and a video signal output from the frame buffer memory Binary difference image enhancing section for enhancing the binary difference image, a moving body identifying section for setting a target position for enlarging the face portion, a vector value for driving the zoom lens, and moving body movement. Pan / depending on direction and speed
It is composed of a drive vector calculation unit for calculating a vector value for driving the tilt, and a drive circuit for driving the zoom lens and the pan / tilt with the output value of the drive vector calculation unit.

The image acquisition unit can remove noise by adding a noise removal mask to the peak noise included in the image signal.

The automatic monitoring controller discriminates whether the moving body is a human by video signal processing, and if the moving body is judged to be a human, the movement of the person being monitored while the face is closed up. It has a function of calculating the vector for the moving speed and the direction.

In the automatic monitoring device, when the automatic monitoring controller is connected to each camera and then connected to the four-screen divider,
Each camera can track independently.

[0012] When only one camera is installed, the above-mentioned automatic monitoring device can be simply constructed by only the camera and the automatic monitoring controller.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention having the above-mentioned structure will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, in the automatic monitoring apparatus according to the first embodiment of the present invention, the output of the camera unit 16 is supplied to a pan / tilt unit 18 for driving the camera unit 16, and the camera The video signal S21 of the section 16 is supplied to the 4-screen divider 13 which receives the video signal S21 from the camera section 16 and divides it into four screens, and the video signal S23 of the 4-screen divider 13 is supplied to the monitor 12.

Another video signal S2 of the 4-screen divider 13
2 is supplied to the automatic monitoring controller 10, the control signal S26 of the automatic monitoring controller 10 is supplied to the recorder 11, and the other control signal S10 of the automatic monitoring controller 10 outputs the zoom lens drive signal S31. Is supplied to the power supply controller 15, and another control signal S27 of the automatic monitoring controller 10 is supplied.
Is configured to be supplied to the pan / tilt controller 14 which outputs the pan / tilt drive signal S30.

The automatic monitoring controller 10 includes a video acquisition unit 4
1, a frame buffer memory 42, a binary difference video enhancement unit 43, a moving body identification unit 44, and a drive vector calculation unit 45.
The input and output are sequentially arranged in the order of the drive circuit 46.

The operation of the automatic monitoring device according to the embodiment of the present invention having the above-mentioned structure is as follows.

When power is applied by the user of the automatic monitoring device, the operation of the automatic monitoring device according to the embodiment of the present invention is started.

As described above, when the operation is started, the video signal S21 output from the camera section 16 composed of four cameras is input to the 4-screen divider 13 to generate 4-screen video signals S23 and S24. It is output and input to the monitor 12, and four screens are displayed on the monitor 12.

At this time, the automatic monitoring controller 10 senses the input signal S22, and if it is not a person, the recorder 11
Then, the control signal S26 in the waiting state is output to the recording device 11, and the recorder 11 enters the waiting state without recording.

When the moving body appears in one of the four cameras, the automatic monitoring controller 10 recognizes the movement and confirms whether the moving body is a person.

When the moving body is not a person, the standby state is entered, and when the moving body is a person, a signal 22b for selecting the corresponding camera, that is, the camera which recognizes that the person is a person is sent to the 4-screen divider 13. When output, the 4-screen divider 13 outputs the screen signal S23 of the camera that recognizes that it is a person to the monitor 12 and the automatic monitoring controller 10, and at the same time, the automatic monitoring controller 10 causes the recorder to record. The control signal S26 is output to 11 to start recording.

The automatic monitoring controller 10 estimates the position of the face part in the human body, sends a zoom control signal S10 to the power controller 15 to enlarge the estimated part, and a zoom drive signal S31 camera. In addition to the zoom lens 17 of the unit 16, the person closes up, and the camera unit 16 outputs the close-up video signal S21.

In the above, the video signal S21 is the four-screen divider 1
It is displayed on the monitor 12 through 3, recorded by the recorder 11, and input to the automatic monitoring controller 10.

At the same time, the automatic monitoring controller 10
Calculates a vector with respect to the movement of the person to be monitored to obtain the moving speed and the direction value, and outputs this to the pan / tilt control signal S27, which is output to the pan / tilt controller 14.
The pan / tilt controller 14 receives the pan / tilt driving voltage S29 from the power supply controller 15, converts it into a pan / tilt driving signal S30, sends it to the pan / tilt 18, and drives the pan / tilt 18. .

According to the moving direction of the person, the bread /
By driving the tilt 18, the camera unit 16 attached to the pan / tilt 18 tracks the movement of a person,
The video of the tracked person is output.

If the person being tracked is out of the monitoring range, recording is stopped, the lens is set to the wide-angle mode, and the pan / tilt 18 is driven to return the camera to the initial position.

The detailed operation of the automatic monitoring controller 10 is as follows.

The video signal S22 input from the 4-screen divider 13 is an analog video signal, and the video signal S2
The peak noise included in the video signal from the video acquisition unit 41 that separates the sync signal from 2 and removes the color signal, performs analog / digital conversion, and applies a threshold value to convert into a digital binary signal capable of image processing. Noise is removed by adding a removal mask.

The noise-removed digital video signal S51 is sequentially input to and stored in the frame buffer memory 42.

The binary image signal S52 output from the frame buffer memory 42 is a binary difference image emphasizing unit 43.
After obtaining the image of the difference between the two frame image signals with,
The binary difference image enhancing unit 4 for detecting the movement of the monitoring target.
Use 3 to emphasize the binary difference image. In order to perform this function efficiently, the morphological calculation ruler is used to simplify the video data, preserve the fundamental morphological characteristics, and remove unnecessary components.

The emphasized binary difference video signal S53 is input to the moving body identifying section 44, and the moving body identifying section 44 extracts the characteristic of each part from the entire moving area by utilizing the property of the moving area. By comparing with the already recognized target form, the form of the moving body is grasped, and the point for enlarging the face part which is the specific part is set.

To close up a specific part of the moving body,
A vector value for driving the zoom lens 17 to calculate an area ratio of the binary difference video signal S52 to obtain an appropriate screen, and a vector for driving the pan / tilt 18 according to the moving direction and speed of the moving body. And the value are calculated by the drive vector calculation unit 45.

The driving vector value of the zoom lens 17 and the driving vector value of the pan / tilt 18 are converted into the driving time of the pan / tilt 18 by the driving circuit 46, and the zoom lens control signal S10 and the pan / tilt 18 are controlled.
The tilt control signal S27 is output.

The video signal S21 output from the camera section 16 is again input to the automatic monitoring controller 10 to continue close-up and tracking at an appropriate zoom magnification.

In addition, as shown in FIG.
One of the two cameras can be selected and tracked by one camera. When the automatic monitoring controller is connected to each camera and then connected to the four-screen divider, each camera Independent tracking is possible.

In this case, the present invention uses four cameras 40.
0, 401, 402, 403, four automatic monitoring controllers 410, 411, 412, 413, and a four-screen divider 42
0, a recorder 430, and a monitor 440.

Further, as shown in FIG. 4, in the case where only one camera is installed, the present invention can be configured by only the camera and the automatic monitoring controller.

In this case, according to the present invention, the camera 100, the automatic monitoring controller 110, the recorder 120, and the monitor 13 are used.
It is composed of 0 and.

[0040]

As described above, according to the present invention having the above-described structure, the video processing technology is used to perform no recording when there is no moving body, and recognizes the moving body when there is a moving body. After identifying who is a person, record if it is a person.

Further, in order to more accurately understand the person's impression, the face part is closed up, the direction and speed of the person's movement are calculated, and the person is continuously tracked according to the movement. It captures impressions at various angles and provides a solid impression that is useful for investigation.

As a result, it is possible to achieve the effect of saving the recording amount and automating the monitoring, thereby saving the monitoring power.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of an automatic monitoring device according to a first embodiment of the present invention.

FIG. 2 is a detailed block diagram of an automatic monitoring controller of the automatic monitoring device according to the first embodiment of the present invention.

FIG. 3 is a block diagram of an automatic monitoring device according to a second embodiment of the present invention.

FIG. 4 is a configuration block diagram of an automatic monitoring device according to a third embodiment of the present invention.

[Explanation of symbols]

 10 ... Automatic monitoring controller 11 ... Recorder 12 ... Monitor 13 ... 4 screen divider 14 ... Pan / tilt controller 15 ... Power controller 16 ... Camera unit 17 ... Zoom up 18 ... Pan / tilt 41 ... Image acquisition unit 42 ... Frame buffer memory 43 ... Binary difference video enhancement unit 44 ... Moving body identification unit 45 ... Drive vector calculation unit 46 ... Drive circuit 100 ... Camera 110 ... Automatic monitoring controller 120 ... Recorder 130 ... Monitor 400, 401, 402, 403 ... Camera 410, 411, 412, 413 ... Automatic monitoring controller 420 ... 4-screen divider 430 ... Recorder 440 ... Monitor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kim Ei-tiger, 219-261, Jongbuk-gu, Seoul, South Korea, 1-dong, Jongbuk-gu 1-chome (72) Inventor, Lee Yiyuan, Toeisan-dong, Yeongjin-dong, West-gu, Ota-ku, Republic of Korea 1 -1304

Claims (6)

[Claims] 1. A camera unit for monitoring a person and outputting a video signal, and a camera for separating a sync signal from a video signal input from the camera unit, removing a color signal, and performing analog / analog /
Digital conversion, calculation of the difference between pixels and applying a critical value to convert it into a digital binary signal that can be processed with pixels, and an image acquisition unit to remove noise, and a digital image signal from which noise has been removed is stored. A frame buffer memory for performing, a binary image enhancing section for enhancing the binary difference image between the image signals output from the frame buffer memory, and a target position for enlarging the face portion to set a target position. An automatic monitoring device comprising: a moving body identifying section; and a recording section for receiving a signal from the moving body identifying section and recording a screen. 2. The automatic monitoring device according to claim 1, further comprising a monitor for receiving the video signal and displaying it on a screen. 3. The four-screen divider for receiving the video signals from the four cameras of the camera unit, dividing the screen into four screens, and outputting the video signals. Automatic monitoring device. 4. A camera unit for outputting a video signal while monitoring a human being, and a sync signal separated from a video signal input from the camera, color signal removal and analog / digital conversion, and calculation of a difference between pixels. And a video acquisition unit for converting a digital binary signal capable of image processing by applying a critical value and removing noise, a frame buffer memory for storing the digital video signal from which noise is removed, Binary video enhancement unit to enhance the binary difference image between the video signals output from the frame buffer memory, moving body identification unit to set the target point to enlarge the face portion, and drive the zoom lens A drive vector calculation unit for calculating a vector value for driving the pan / tilt according to the moving direction and speed of the moving body, A drive circuit for driving the zoom lens and the pan / tilt with an output value of the output unit of the cutout calculation unit; and a pan / tilt control unit for receiving a control signal of the drive circuit and outputting a pan / tilt drive signal. A power supply controller for receiving a control signal of the drive circuit and outputting a zoom signal, and a recording unit for recording a screen in response to a signal of the moving body identification unit. Automatic monitoring device. 5. A monitor for receiving a video signal and displaying it on a screen is further included.
The automatic monitoring device described. 6. The display device further comprises a 4-screen divider for receiving video signals from the four cameras of the camera unit and dividing the screen into four screens and outputting the video signals. The automatic monitoring device described.