KR101314721B1 - A monitoring system using image analysis - Google Patents

Abstract

The receiver receives the captured images transmitted from the plurality of surveillance cameras installed in the surveillance area, the display unit divides and displays the captured images received from the receiver unit, and analyzes the images outputted separately from the display unit to determine whether the subject is focused. And a control unit for controlling whether the image is determined to be differentiated and output so that the administrator can check and observe the image determined as the intensive observation target according to the result analyzed by the image analysis unit. A security system characterized by the above is disclosed.

Description

Security system {A MONITORING SYSTEM USING IMAGE ANALYSIS}

The present invention relates to a security system, and more particularly, to a security system capable of observing and monitoring a person exposed to danger while photographing a hot spot such as an alley, a park, a road.

Recently, the installation of surveillance cameras (CCTV) for crime prevention is increasing. In other words, by installing a surveillance camera centering on areas with high possibility of coverage such as alleys, parks, residential areas, etc., it is used as evidence for crime prevention as well as crime prevention.

However, in the related art, images captured by a large number of surveillance cameras as described above are separately outputted so that they can be simultaneously identified on a display unit installed in a jurisdiction (police, fire department, etc.) in charge of a corresponding area, and transmitted from numerous surveillance cameras. There is a problem that it is not easy for a few managers to observe the image continuously. That is, since similar images are output at the same time, it is difficult to immediately identify images exposed to dangerous environments or emergencies, and in some cases, it is possible to check the facts only after a crime situation occurs, and actively prevent crime. There was a problem that can not respond quickly to crime occurrence.

The present invention was conceived in view of the above, and provides a system for intensively monitoring and managing an image of a person who has been greatly exposed to a risk by analyzing an image photographed through a surveillance camera. The purpose is.

It is also an object of the present invention to provide a method system for receiving a signal output from a radio transmitter carried by people so that a person who is alone from a crowd can be identified and monitored.

Security system using the image analysis of the present invention for achieving the above object, the receiving unit for receiving the captured image transmitted from a plurality of surveillance cameras installed in the surveillance area; A display unit for dividing and displaying the captured images received by the receiver; An image analyzing unit for analyzing whether the image is divided and outputted on the display unit and determining whether the image is a concentrated observation target; And a controller configured to differentiate and output an image determined to be an intensive observation target according to a result analyzed by the image analyzer so that a manager can distinguish and observe the image from other images.

The image analyzer may include: a person recognizing unit recognizing a person in the images output from the display unit; A counting unit that counts the number of recognized people; And an image selector which selects an image in which a number of people or less is set as the concentrated observation target image.

The controller may control the pop-up image to be displayed so as to be distinguished from other images.

In addition, the control unit may be controlled to repeatedly reduce and enlarge the image determined as the focused observation target a plurality of times.

In addition, the controller assigns an identification code to each screen image which is divided and output to the display unit and displays the identification code, and the administrator recognizes the identification code information corresponding to the screen on which the image determined as the focused observation target is displayed as an audio signal. It is preferable to further include a voice output unit for outputting.

A wireless communication unit recognizing a signal generated from a portable terminal entered within a shooting range of the plurality of surveillance cameras; And a camera controller which controls to start shooting of a surveillance camera of a corresponding area when receiving the signal transmitted from the portable terminal in the wireless communication device.

In addition, the security system of the present invention for achieving the above object is installed at a plurality of points in the monitoring area, and receives the signal output including the identification number from the wireless transmitters carried by the observers in the monitoring area. A plurality of wireless receivers; A position calculator for analyzing the signals received from a plurality of radio receivers and calculating positions of the radio transmitters; A judging unit which determines the presence or absence of the focused observer based on the positions of the wireless transmitters calculated by the position calculating unit; At least one camera device installed to photograph the surveillance area; A display unit for dividing and displaying images photographed by the plurality of camera apparatuses; And a main control unit for controlling the output to differentiate and output the image photographed at the corresponding location so that the administrator can check and observe the image photographed at the location.

Here, the camera device includes a plurality of surveillance cameras installed to photograph the surveillance region; A pan tilting driving unit configured to pan tilt each of the plurality of surveillance cameras; Preferably, the camera control unit controls the pan tilting driving unit and the surveillance camera so as to track and photograph the intermittent camera in charge of the location of the focused observer among the plurality of surveillance cameras.

In addition, the position calculating unit, measuring the received strength of the signals transmitted from the radio transmitters from the three or more radio receivers, and based on the measured reception intensity and the unique position values of the radio receivers, the radio transmitter It is good to calculate their location.

The signal output from each of the radio transmitters may include location information, and the location calculator may calculate the locations of all radio transmitters by analyzing the location information included in the signals transmitted from the radio transmitters. .

The determination unit may determine whether the positions of the wireless transmitters calculated by the position calculation unit are gathered within the set separation distance, and determine the presence of the focused observer by checking the existence of the wireless transmitters that are separated by the set separation distance or more. Good to do.

The controller may control the pop-up image to be displayed so as to be distinguished from other images.

According to the crime prevention system of the present invention, if the number of images captured by the plurality of surveillance cameras are outputted in one screen, but the number of people in the captured image is confirmed to be less than the reference value, it is determined to be the observing target and popped up on the screen of the display unit And then output it so that the administrator can observe it more carefully.

Therefore, it is possible to promptly observe the surveillance of areas where crimes are likely to occur, so that the response to crimes can be dealt with promptly, and in some cases, there is an advantage that follow-up measures can be taken to prevent crimes. .

In addition, according to the present invention, by receiving a signal output from a radio transmitter carried by the subjects to identify the subjects (children, etc.) that are not alone in the crowd to form a crowd, so that the subject can be intensively photographed and observed. Can be.

1 is a block diagram showing a security system according to an embodiment of the present invention.
FIG. 2 is a diagram for describing a state in which images captured by a surveillance camera are output to a screen divided into a display unit.
FIG. 3 is a diagram for describing a state in which a concentrated observation target image is popped up and output in the state of FIG. 2.
4 and 5 are schematic diagrams for explaining a method system according to another embodiment of the present invention.

Hereinafter, a security system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, the security system 100 according to an embodiment of the present invention receives a captured image transmitted from a plurality of surveillance cameras 10a, 10b, 10c ... 10n installed in a surveillance area. The receiver 20 includes a display unit 30 for displaying the received photographed images, an image analyzer 40, an audio output unit 50, and a controller 60.

The surveillance cameras 10a, 10b, 10c... 10n are installed to monitor and photograph rare places such as a crime area or an outlying area, for example, an alley, a park, a playground, and the like. Images captured by the plurality of surveillance cameras 10a, 10b, 10c ... 10n are transmitted in real time.

The receiver 20 receives images captured by the plurality of cameras 10a, 10b, 10c... 10n through wired or wireless communication in real time.

The display unit 30 displays the captured images received by the receiver 20 by dividing the screen. That is, as shown in FIG. 2, the screen of the display unit 30 is controlled to simultaneously display a plurality of images through screens divided into a number corresponding to the number of received images. In this case, it is preferable that identification codes a11 to a34 are assigned to each of the screen images so as to distinguish the screens from each of the screens divided by the display unit 30. The identification codes a11 to a34 assigned to each screen may be displayed on the screen together with the image so that the administrator can confirm the identification codes a11 to a34. Here, the identification codes a11 to a34 may be various examples such as numbers, letters, and a mixed state thereof.

The image analyzing unit 40 analyzes the images that are divided into the display unit 30 and outputs each image to determine whether there is an image to be focused. To this end, the image analyzer 40 specifically includes a person recognition unit 41, a counting unit 42, and an image selecting unit 43.

The person recognition unit 41 recognizes a person within the images output from the display unit 30. That is, the person recognition unit 41 classifies the outer frame of the object or the object appearing in the image by frame and by motion, and compares the divided frame with a reference frame corresponding to a preset person (30 to 40). %) In case of similarity, one reference frame can be recognized as one person. The frames of each subject appearing in the image may be classified by shade or may be classified by movement of the subject.

Further, more preferably, the human recognition unit 41 may recognize a person by analyzing the extracted still images by extracting the displayed image into a still image on a predetermined time basis. For example, if the average time taken to enter and exit the shooting range of the camera is 3 seconds, the still image is extracted every 3 seconds to recognize the presence of a human, thereby reducing the data processing speed, It is possible to increase the reliability of human recognition results.

The counting unit 42 counts the number of people recognized by the person recognition unit 41 for each screen image to be displayed. At this time, the number of people counted by the counting unit 42 counts only the number of people recognized on the basis of the image extracted by the human recognition unit 41, and the image extracted next by the human recognition unit 41. If we analyze, the counted value is reinitialized and recounted.

The counted information is matched with the identification code of the screen and transmitted to the image selector 43. The image selector 43 analyzes the received counting information and the identification code of the corresponding screen, and determines the screen as the focused observation object when the received counting value is less than the reference value. For example, when the reference value is set to two, when the number of people counted in the image is confirmed as one, the image selector 43 selects that the image is the focused observation image, and the selected image is The generation information of the concentrated observation target image together with the unique identification information of the output screen is transmitted to the controller 60.

The control unit 60 controls the image to be differentiated and output so that the administrator can carefully check and observe the image determined as the intensive observation target according to the result analyzed by the image analysis unit 40 from other images. Specifically, as shown in FIG. 3, when only one person whose reference value is less than one is found, the controller 60 pops up the image screens a23 and a31 to be enlarged and output compared to other screens. Control to display. Therefore, the administrator can observe the image screens a23 and a31 that pop up in the entire screen of the display unit 30, thereby more closely and carefully observing a person who is exposed to danger.

In addition, the controller 60 may maintain the video screens a23 and a31 in a popped up state, or may control the screen to be repeatedly outputted. This can give managers more awareness and encourage them to focus attention so that intensive observations can be made.

In this case, the remaining screens except for the corresponding video screens a23 and a31 may be controlled to be output in a normal screen size or may be converted to a smaller screen size and output.

When the concentrated observation target image is found, the controller 60 outputs a voice message indicating that the concentrated observation target image is found through the audio output unit 50, including identification codes of the corresponding image screens a23 and a31. You can do that. Therefore, the manager who is staring at another place can recognize the fact that the concentrated observation target image is generated immediately through the voice signal, and induce attention to observe the corresponding image screens a23 and a31.

In addition, the storage unit 70 may further include a storage unit 70 for storing the captured images received through the receiver 20. The storage unit 70 may store images captured by the surveillance cameras 10a, 10b, 10c. Therefore, the image information stored in the storage unit 70 can be used later as evidence material.

In addition, according to the present invention, the wireless communication unit 80 for recognizing a signal transmitted from the terminals 101, 102 and 103 within the shooting range of the monitoring camera (10a, 10b, 10c ... 10n), and the terminal (in the wireless communication unit 80) When receiving a signal transmitted from the 101,102,103 may further include a camera control unit 90 for controlling to start shooting for the surveillance camera of the area. In this case, the wireless communication unit 80 confirms the signal position transmitted from the surrounding terminals through the communication base station or satellite communication, and transmits the confirmed information to the camera control unit 90. The camera controller 90 starts capturing the surveillance camera so that the surveillance camera having the location where the terminal is found as the shooting range based on the received terminal location information starts to shoot the surveillance camera and photographs around the identified terminal. Control to acquire the captured image. The image captured by the surveillance camera may be transmitted to the receiver 20 for processing.

On the other hand, the terminal includes all portable terminals, for example, may include all kinds of portable terminals, such as mobile phones, smart phones, portable computers.

As described above, according to the security system using the image analysis according to an embodiment of the present invention, while receiving the images captured by the plurality of surveillance cameras (10a, 10b, 10c ... 10n) to display the divided screen In addition, by analyzing the respective images to determine whether or not to be an intensive observation target, in the case of the image determined to be an intensive observation target to control the pop-up displayed on the screen of the display unit 30, induces the administrator to focus on observation You can do it. As described above, the criterion for determining whether the subject is focused is determined based on the number of people identified in the captured image. For example, when only one person is captured by the shooting projection, If you are alone, you may be exposed to crime, etc. If you find such a case, it is possible to immediately observe the occurrence of crime by intensive observation. In other words, if there is a crowd, the probability of crime is relatively low, so the number of people identified in the video is more likely to be exposed to the crime. .

4 to 5, the security system 200 according to another embodiment of the present invention includes a plurality of wireless receivers 211, 212, 213, and 214, a position calculator 220, a determiner 230, and a camera. The device 240, a display unit 250, an audio output unit 260, a storage unit 270, and a controller 280 are provided.

The wireless receivers 211, 212, 213, and 214 are installed at a plurality of points in the surveillance area, and receive signals output from the radio transmitters 201 to 204 carried by the observers 311 to 317 in the surveillance area, respectively. Here, the wireless transmitters 201 to 204 may include a terminal manufactured to output a transmission signal or a portable terminal generally used. Each of these radio transmitters 201 to 204 has unique identification information, and the output signal includes each identification information. In addition, when the radio transmitters 201 to 204 are portable terminals such as cellular phones, identification information and location information (GPS information) are included in the output signal and transmitted together.

The position calculator 220 calculates positions of the radio transmitters 201 to 204 by analyzing signals received from the plurality of radio receivers 211, 212, 213, and 214. In detail, the position calculator 220 measures the reception strengths received by the plurality of wireless receivers 211, 212, 213, and 214 and transmits the signals transmitted from each of the wireless transmitters 201 to 204, and the measured reception strengths and the wireless receivers 211, 212, 213, 214. The position of the wireless transmitters 201 to 204 can be calculated based on the intrinsic position value of. That is, for example, each of the three or more wireless receivers 211, 212, 213, and 214 receives signals of the wireless transmitters 201 to 204, respectively. As shown in FIG. 5, the strengths of receiving the signals of the radio transmitters 201, 202, and 203 in the three radio receivers 211, 212, 213 are similarly measured within a tolerance range, and thus, using the position values of the three radio receivers 211, 212, 213. It is possible to calculate the positions of the radio transmitters 201, 202, 203 using triangulation. On the other hand, in another wireless receiver 214, the reception strength of the radio transmitters 201, 202, 203 is weakly measured compared to the other radio receivers 211, 212, 213, and the reception strength of the signals of the remaining radio transmitters 204 may be measured relatively strongly. . Of course, even in the neighboring radio receivers 212 and 214 based on the radio transmitter 204, a reception strength greater than that of the remote receiver 211 may be measured. Therefore, the position calculator 20 may calculate the positions of the wireless transmitters 201 to 204.

In addition, when the location information is included in the signal output from the radio transmitters 201 to 204, the location calculator 20 analyzes identification information and location information for each radio transmitter received from the radio receivers 211 to 214. The overall position of the radio transmitters 201 to 204 can be calculated.

The determination unit 30 determines the presence or absence of the focused observer based on the positions of the wireless transmitters 201 to 204 calculated by the position calculation unit 20. That is, as shown in FIG. 5, when analyzing the position values of the wireless transmitters 201 to 204 calculated by the position calculator 20, the plurality of wireless transmitters 201, 202, and 203 are clustered adjacent to each other. The other radio transmitter 204 can be seen that far away. Therefore, the determination unit 30 may determine that the subject 117 (children, the elderly, etc.) who owns the wireless transmitter 204 that does not form a cluster alone and is separated from the intensive observer. When the presence of the observing subject is confirmed, the information is transmitted to the controller 280.

The camera device 240 is installed to photograph the surveillance area, and includes a plurality of surveillance cameras 241 to 244, a plurality of pan tilting driving units 245a to 245d, and a camera controller 246. Surveillance cameras 241 to 244 are installed at a plurality of different points, respectively, and are installed to take pictures of different surveillance areas. The captured image captured by the surveillance cameras 241 to 244 is transmitted to the controller 280 through wired or wireless communication. Each of the surveillance cameras 241 to 244 may be installed to be panned and tilted by the pan tilting driving units 245a to 245d, respectively. Therefore, driving control may be performed to track and photograph a subject according to a control signal of the camera controller 246. On the basis of the control signal from the control unit 280, the camera control unit 246 independently drives the pan tilting driving units 245a to 245d as well as photographing driving of the surveillance cameras 241 to 244 to track the focused observer. You can shoot.

Like the display unit 30 described above with reference to FIGS. 1 to 3, the display unit 250 divides and displays the captured images captured by the plurality of surveillance cameras 241 to 244 into a plurality of regions. In addition, when intensive observation subjects are separated from each other and do not form a cluster, the surveillance camera 242 which tracks and photographs a corresponding region is controlled to output differently from the other images, preferably in the above embodiment. As described above, it is preferable to display a pop-up window so that an administrator (monitor) can immediately recognize and focus on the observation.

The voice output unit 260 may also output information on the focused subject photographed image that is displayed as a warning broadcast and a pop-up window when the focused observer confirms the voice so that the administrator can immediately react to the observation. have.

The storage unit 270 stores the images taken by the surveillance cameras 241 to 244 to be used as evidence later.

The controller 280 controls the monitoring camera 242 to track and photograph the location of the focused observer when the determination unit 230 confirms the presence of the focused observer. In addition, the controller 280 distinguishes the image photographed by the surveillance camera 242 from the image photographed by the other surveillance cameras 241, 243, and 244, and controls the display to be differentiated so that an administrator can check and observe carefully. That is, as described above with reference to FIGS. 2 and 3, the controller 280 pops up the image captured by the intensive observer on the display 250 and shows the enlarged image. The voice output unit 260 controls the voice. As a result, a warning broadcast is output for the fact that the focused observer is found, and the manager can be intensively observed the video.

As described above, in the method system 200 according to another embodiment of the present invention, when the observer is children, the mobile terminal is provided as the wireless transmitters 201 to 204 to the children 311 to 317. Alternatively, a separate wireless transmitter may be provided. The surveillance cameras 241 to 244 and the wireless receivers 211 to 214 are installed in a surveillance area, that is, an alley, a park, a station, a stop, a playground, or the like, and are easily exposed to crime or have a high crime occurrence rate.

Children (311 to 316) that make up the crowd in the surveillance area as described above is difficult to be exposed to risk, but children (317) who are alone from the crowd is likely to be a crime subject, When the child 317 is found to be alone, as described above, the child 317 can be tracked and photographed, and the displayed video can be monitored for intensive management. Or take immediate action in the event of a crime.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Those skilled in the art will readily appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims.

20. Receiver 30,250 Display unit
40..Image analysis unit 50,260..Audio output unit
60,280. Control part 70,270 Storage part
80 .. Communication part 90,246. Camera control part
Security system 101,102,103 ..
201,202,203,204..Wireless Transmitter 211,212,213,214..Wireless
220. Position calculation unit 230. Judgment unit
240. Shooting device

Claims (12)

A receiver configured to receive captured images transmitted from a plurality of surveillance cameras installed in the surveillance region;
A display unit for dividing and displaying the captured images received by the receiver;
An image analyzing unit for analyzing whether the image is divided and outputted on the display unit and determining whether the image is a concentrated observation target; And
And a controller configured to differentiate and output an image determined to be an intensive observation target according to a result analyzed by the image analyzer so that an administrator can distinguish and observe the image from other images.
Wherein the image analyzing unit comprises:
A person recognizing unit recognizing a person in the images separated and output by the display unit;
A counting unit that counts the number of recognized people; And
And an image selector configured to select an image of which a number of persons, which is set up or less, is found as an intensive observation target image. delete The method of claim 1,
And the controller controls the pop-up image to be displayed to be distinguished from other images. The method of claim 1,
The control unit is characterized in that for controlling the output to be reduced and enlarged by repeatedly repeating a plurality of times the image determined as the focused observation target. The method according to any one of claims 1, 3, and 4,
The control unit allocates and displays an identification code for each screen image which is divided and output to the display unit.
And an audio output unit for outputting identification code information corresponding to a screen on which the image determined to be the focused observation target is displayed as an audio signal. The method according to any one of claims 1, 3, and 4,
A wireless communication unit recognizing a signal generated from a portable terminal entered within a shooting range of the plurality of surveillance cameras; And
And a camera controller for controlling to start shooting of a surveillance camera of a corresponding area when receiving the signal transmitted from the portable terminal in the wireless communication device.
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