KR102333760B1 - Intelligent video control method and server apparatus thereof - Google Patents

Abstract

An image control method and a server are provided. This method is an image control method processed in a control server operated by at least one processor, the steps of detecting the occurrence of an event, transmitting a preset setting request to at least one camera, and driving the camera to at least one preset camera Transmitting a signal, and receiving an image from at least one camera rotated according to the camera driving signal and outputting the image to a control screen, wherein the camera driving signal is a shooting direction of the rotated at least one camera It includes the camera rotation direction and camera rotation angle to face the control area containing the event occurrence location.

Description

Intelligent video control method and its server

The present invention relates to an intelligent video control method and a server thereof.

An image control system that monitors images captured using a camera is being applied to various fields for the purpose of facility management, disaster response, crime prevention, traffic management, and the like.

In the past, fixed cameras were mainly used, but now, mobile cameras using PTZ (Pan Tilt Zoom) are mainly used. A PTZ camera is a camera that allows the user to freely adjust the camera lens direction after the camera is installed. The administrator can adjust the camera lens direction to shoot in a desired direction while monitoring the video shot by the PTZ camera from a remote location.

The number of cameras installed mainly in public institutions is about 65,000 as of 2013, and the number is continuously increasing. As the number of cameras increases, the number of images that managers need to monitor in a limited space is increasing. In general, the number of cameras suitable for one manager to monitor is about 20 to 50. In the case of an administrator, the monitoring ability decreases by about 45% after 12 minutes, and by about 95% after 22 minutes. Therefore, it is necessary to introduce an intelligent video control system for efficient operation of the video control system.

The intelligent technology of the conventional video control system focuses on analyzing a captured image through video surveillance, object recognition, object tracking, and distance calculation with an object. In order to automatically orient the camera in a specific direction, existing image analysis techniques can be used. However, in this case, since there are many changing factors such as the surrounding environment changes every minute depending on the weather or regional development, complex and expensive processing is inevitably required for accurate direction detection.

In addition, the camera itself may provide information to the control center to know the current shooting direction, such as the camera lens direction and rotation amount. However, already installed cameras do not have this function. Implementing this function requires a lot of time and money to apply it to all hundreds of thousands of cameras.

On the other hand, there is a network monitoring service among the services of the disaster safety platform. When an event occurs, the cast network monitoring service selects 4 cameras installed close to the event and outputs the images captured by each camera on the simultaneous control screen. In this case, the four cameras may be cameras near the event, or cameras that are not.

When the video captured by 4 cameras is shown on the control screen, the manager monitors the captured video and adjusts the shooting direction of each camera to get closer to the event location. However, as described above, although it is possible to adjust the shooting direction of the camera remotely, the situation is dependent on the manual operation of a person. In particular, it is difficult to determine exactly how much each camera has moved from its initial position when the manager takes turns and changes to another person. Therefore, when an event occurs, the manager must adjust each camera to face the event occurrence position while monitoring the captured image again daily.

SUMMARY OF THE INVENTION An object of the present invention is to provide an intelligent video control method and a server for controlling from a remote location so that the shooting direction of a camera is automatically changed toward a point where an event occurs.

According to one aspect of the present invention, an image control method is an image control method processed by a control server operated by at least one processor, the method comprising the steps of detecting an event occurrence, transmitting a preset setting request to at least one camera , transmitting a camera driving signal to at least one preset camera, and receiving an image from at least one camera rotated according to the camera driving signal and outputting it on a control screen, wherein the camera driving signal is, It includes a camera rotation direction and a camera rotation angle in which the photographing direction of the at least one rotated camera faces a control area including an event occurrence location.

Between the step of transmitting the preset setting request and the step of transmitting the camera driving signal, the camera rotation direction and the camera rotation angle are calculated based on the camera installation position coordinates, the event occurrence position coordinates, and the preset reference point coordinates of the camera It may further include the step of

In the calculating step, after rotating the virtual screen until a connecting line connecting the tracker displayed on the coordinates of the event occurrence location on the virtual screen and the coordinates of the camera installation location displayed on the virtual screen is included in the object analysis area, the calculating a direction opposite to the rotation direction of the virtual screen as the camera rotation direction, and calculating the rotation angle of the virtual screen as the camera rotation angle,

The object analysis area may be set within a predetermined angle left and right with respect to a reference line connecting the coordinates of the camera installation location and the coordinates of the reference point respectively displayed on the virtual screen.

In the virtual screen, a point where latitude and longitude intersect may be set as location coordinates.

The coordinates of the reference point may be set as coordinates of a center of a control area to which a shooting direction of the preset camera is directed.

The reference point coordinates may be set as coordinates of a location of a building included in a control area to which the preset camera shooting direction is directed.

In the transmitting of the preset setting request, the preset setting request may be transmitted to a plurality of cameras having an installation position close to an event occurrence position.

According to another aspect of the present invention, the image control method is an image control method processed by a control server operated by at least one processor. Transmitting, displaying the camera installation point on the camera installation position coordinates of the virtual screen consisting of position coordinates, displaying the reference point on the preset camera reference point coordinates of the virtual screen, and displaying the tracker on the event occurrence position coordinates of the virtual screen setting an area formed within a predetermined angle left and right as an object analysis area based on a connection line connecting the camera installation point and the reference point, rotating the virtual screen until the tracker is included in the object area, the calculating a direction opposite to the rotation direction of the virtual screen as a camera rotation direction, calculating the rotation angle of the virtual screen as a camera rotation angle, and generating a camera driving signal including the camera rotation direction and the camera rotation angle transmitting to a camera, and receiving an image photographed by a camera moving in the camera rotation direction and the camera rotation angle in a preset setting state and outputting the image to a control screen.

The preset reference coordinates may be position coordinates composed of latitude and longitude included in a control area toward which the camera in a preset state is directed.

The camera rotation angle may be a rotation angle in a panning direction of a PTZ (Pan Tilt Zoom) camera.

The preset setting request is transmitted to at least two or more cameras installed close to the location where the event occurred, and the displaying, the setting, the calculating, and transmitting to the camera includes the at least two or more cameras. Repeatedly for each camera, the step of outputting may simultaneously output each image captured by the at least two or more cameras moving toward a control area including the location where the event occurred on the control screen.

The preset setting request requests to set a preset uniquely set for each of the at least two or more cameras, and the preset includes a rotation angle in a panning direction and a rotation angle in a tilting direction of a PTZ (Pan Tilt Zoom) camera. can

According to another feature of the present invention, the server includes a communication device for transmitting and receiving data with at least one camera through a network, a memory for storing a program for controlling driving of the at least one camera, and at least one for executing the program of a processor, wherein the program, upon detecting the occurrence of an event, transmits a preset setting request to the at least one camera, and transmits each camera rotation direction and each camera rotation angle to at least one preset camera, , receiving an image captured by the at least one camera from the at least one camera rotated in the respective camera rotation direction and the respective camera rotation angle and outputting the received image to a control screen.

The program sets the object analysis area within a certain angle left and right around the connection line connecting the camera installation point and the reference point on the virtual screen where the point where the latitude and longitude intersect is set as the location coordinate, and the event occurs on the virtual screen After rotating the virtual screen until the connecting line connecting the tracker displayed in the position coordinates and the camera installation location point is included in the object analysis area, a direction opposite to the rotation direction of the virtual screen is calculated as the camera rotation direction, It may include commands for calculating the rotation angle of the virtual screen as the camera rotation angle.

According to an embodiment of the present invention, with uncomplicated processing and low cost, it is possible to control the camera from a remote location so that the shooting direction of the camera is automatically directed to the point where a specific event occurs. Therefore, it is possible to immediately photograph a specific event occurrence point, providing accurate and rapid control.

1 shows the configuration of an intelligent video control system according to an embodiment of the present invention.
2A and 2B are exemplary views of a control area according to an embodiment of the present invention.
3 shows a driving direction of a camera according to an embodiment of the present invention.
4 is a block diagram schematically illustrating a camera configuration according to an embodiment of the present invention.
5 is a flowchart illustrating an image control method according to an embodiment of the present invention.
6 is an exemplary view to which an image control method according to an embodiment of the present invention is applied.
7 is a flowchart illustrating step S109 of FIG. 5 in detail.
8 is an exemplary diagram of a virtual screen according to an embodiment of the present invention.
9 is an exemplary diagram of setting a reference point according to an embodiment of the present invention.
10 is a diagram illustrating a reference point setting according to another embodiment of the present invention.
11 to 13 illustrate an operation of rotating a virtual screen according to an embodiment of the present invention.
14 is a hardware block diagram of a server according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated. In addition, terms such as “…unit”, “…group”, and “…module” described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. can

In the present specification, a terminal is a user equipment, a device, a user equipment (UE), a mobile equipment (ME), a mobile station (MS), a mobile terminal (MT), a subscriber station, SS), Portable Subscriber Station (PSS), User Equipment (UE), Access Terminal (AT), etc. It may include all or part of the functionality of a user device or the like.

The terminal of the present specification is a base station (BS), an access point (Access Point, AP), a radio access station (Radio Access Station, RAS), a Node B (Node B), an advanced Node B (evolved NodeB, eNodeB), It can be connected to a remote server by accessing a network device such as a base transceiver station (BTS) or a mobile multihop relay (MMR)-BS.

As used herein, "transmission or provision" may include not only direct transmission or provision, but also transmission or provision indirectly through another device or using a detour path.

1 shows the configuration of an intelligent video control system according to an embodiment of the present invention, FIGS. 2A and 2B are exemplary views of a control area according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention Shows the driving direction of the camera.

Referring to FIG. 1 , the intelligent video control system includes at least one camera 100 , a network 200 , and a control server 300 .

At least one camera 100 is installed in a specific place, and transmits an image signal obtained by photographing the control area to the control server 300 through the network 200 . Here, the control area varies according to the photographing direction of the camera, for example, the camera lens direction. Therefore, there are several control areas according to the shooting direction of the camera.

Referring to FIG. 2A , the camera 100 installed at a specific location captures the control area R1 in the shooting direction A. Referring to FIG. 2B , the camera 100 photographs the control area R2 in the photographing direction B.

In this case, the at least one camera 100 is a network camera and includes a Pan Tilt Zoom (PTZ) camera. A PTZ camera is a camera that allows the user to freely adjust the shooting direction of the camera after the camera is installed. Here, PTZ means Pan (moving left and right), Tilt (moving up and down), and Zoom (image enlargement and reduction).

As shown in FIG. 3 , the camera 100 moves in an up-down (tilting) direction and in a left-right (panning) direction with respect to the fixed axis of the camera.

The camera 100 installed in a specific place may photograph each control area according to an up/down (tilting) angle and/or a left/right (panning) angle.

Referring again to FIG. 1 , the network 200 includes various currently known communication networks including wired/wireless Internet, Wi-Fi, and the like. The network 200 connects a communication line between at least one camera 100 and the control server 300 so that data communication is made between them.

The control server 300 outputs the video signal received from the at least one camera 100 on the control screen. The control server 300 may receive an image signal captured by at least one camera 100 in a remote location to monitor the control area.

Of course, the control server 300 can store the video signal transmitted from the at least one camera 100 in an internal memory, or store it in a storage device (DB) installed in a separate physical device or virtual resource that performs a storage function. have.

The control server 300 may change the control area photographed by the camera 100 according to the administrator's selection, and receive an image of the changed control area.

When an event is detected, the control server 300 adjusts the shooting direction of the camera in order to check an event occurrence location and acquire an image of the event occurrence location.

The control server 300 may receive an event generation message set in the control area from the event generating device 400 .

According to an embodiment, the event occurrence message may be generated according to a result detected by a sensor installed in the control area or a reader. Sensors for detecting various events may be disposed in the control area.

According to another embodiment, in conjunction with an external system (not shown), that is, a system (not shown) that collects and manages information related to event occurrence, event occurrence information may be received from the system (not shown).

However, it is not limited to this embodiment, and there are various methods for acquiring the event occurrence message or event occurrence information. In the present invention, without specifying a configuration for acquiring event occurrence information, it is assumed that event occurrence information required for control can be acquired at a specific location.

4 is a block diagram schematically illustrating a camera configuration according to an embodiment of the present invention.

Referring to FIG. 4 , the camera 100 includes a photographing unit 101 , a driving unit 103 , a communication unit 105 , and a control unit 107 .

The photographing unit 101 collectively refers to components necessary for image photographing, including a camera lens. The photographing unit 101 acquires an image signal by photographing the control area. The photographing unit 101 may process the acquired image signal to enable digital transmission.

The driving unit 103 rotates the camera 100 so that the center of the camera lens is directed toward the control area. The driving unit 103 may include a mechanical component such as a motor included in the camera housing (not shown).

The driving unit 103 rotates the camera 100 in an up-down (tilting) direction and/or in a left-right (panning) direction about the camera fixed axis. At this time, the driving unit 103 changes the shooting direction of the camera 100 according to the camera driving signal received from the control server 300 . Here, the photographing direction is composed of a tilting angle and a panning angle. The tilting angle is set within a range of 180 degrees in the vertical direction. The panning angle is set within a range of 360 degrees in the left and right directions.

The communication unit 105 transmits the image signal output from the photographing unit 101 to the control server 300 through the network 200 . The communication unit 105 receives the camera driving signal from the control server 300 through the network 200 and outputs it to the driving unit 103 .

The control unit 107 processes signals transmitted between each component of the camera 100 , that is, the photographing unit 101 , the driving unit 103 , and the communication unit 105 .

5 is a flowchart illustrating an image control method according to an embodiment of the present invention, and FIG. 6 is an exemplary diagram to which the image control method according to an embodiment of the present invention is applied.

Referring to FIG. 5 , the camera 100 and the control server 300 are connected through the network 200 ( S101 ).

When the event is detected (S103), the control server 300 transmits a preset setting request to the camera 100 (S105). According to one embodiment, the camera 100 already stores preset information. In this case, the preset information may be input by the installer when the camera 100 is installed. Alternatively, it may be information built into the camera 100 by the manufacturer. According to another embodiment, the preset information may be included in the preset setting request of step S105 by the control server 300 and provided to the camera 100 .

The camera 100 rotates so that the tilting angle of the camera 100 becomes the tilting angle included in the preset information, and rotates so that the panning angle of the camera 100 becomes the panning angle included in the preset information (S107).

The control server 300 calculates a camera rotation direction and a camera rotation angle for the event occurrence location to be included in the control area of the camera 100 ( S109 ). Here, the camera rotation angle is the panning angle. It is assumed that the tilting angle of the camera 100 is adjusted according to the needs of the manager while monitoring the image.

The control server 300 generates a camera driving signal including the rotation direction and rotation angle calculated in step S109 and transmits it to the camera 100 ( S111 ).

The camera 100 sets the shooting direction according to the camera driving signal (S113). The camera 100 rotates in the current position, that is, in the rotation direction received in step S111 in the preset setting state. For example, if the rotation direction is right, the camera 100 rotates to the right at the current position. And, after the camera 100 rotates by the rotation angle, the rotation is stopped.

The camera 100 takes an image of the control area at the position where the rotation is stopped (S115). The camera 100 transmits the captured image (S115) to the control server 300 (S117). The control server 300 outputs the received image (S117) on the control screen (S119).

At this time, although one camera 100 has been described as an example, the control server 300 may change the shooting direction of the plurality of cameras 100 . The control server 300 has installation location information of the camera 100 . Accordingly, preset settings may be requested for a plurality of cameras 100 installed near an event occurrence location, and the rotation direction and rotation angle of each camera 100 may be calculated and provided to each camera 100 . That is, steps S105 to S119 may all be performed for the plurality of cameras 100 . At this time, the images captured by each of the plurality of cameras 100 toward the event occurrence location are simultaneously output on the control screen of the control server 300 .

Referring to FIG. 6 , when a specific event, for example, an event such as SOS occurs, four cameras (#1, #2, #3, #4) installed in a location close to the location where the event occurred are preset By rotating in the direction of the arrow in the state, the control area including the location of the event is photographed. In this case, although the control area is shown as one, the detailed image of the control area seen in the shooting direction that each camera is facing may be different. Accordingly, the control server 300 may simultaneously acquire images of the control area including the event occurrence location in various shooting directions.

Now, the control server 300 calculates the rotation direction and the rotation angle of the at least one camera 100 so that the at least one camera 100 captures the control area including the event occurrence position in FIG. 7 . ~ It will be described in detail with reference to FIG. 17 as follows.

7 is a flowchart illustrating step S109 of FIG. 5 in detail, FIG. 8 is an exemplary diagram of a virtual screen according to an embodiment of the present invention, FIG. 9 is an exemplary diagram of setting a reference point according to an embodiment of the present invention, and FIG. is an exemplary diagram of setting a reference point according to another embodiment of the present invention, and FIGS. 11 to 13 show an operation of rotating a virtual screen according to an embodiment of the present invention.

First, referring to FIGS. 7 and 8 , the control server 300 pops up a virtual screen on the control screen (S201).

The virtual screen pops up on the control screen, and may be superimposed on the control screen. In the virtual screen, a point where latitude and longitude intersect with each other is set as a location coordinate. In the virtual screen, a plurality of straight lines on the x-axis and a plurality of straight lines on the y-axis that intersect each other are displayed. The x-axis is latitude and the y-axis is longitude. The point where the straight lines intersect each other is the position coordinate, and the position coordinate is composed of (latitude value, longitude value).

The control server 300 displays the camera installation point (Installation point, I) and the reference point (Reference Point, R) on the virtual screen (S203).

The control server 300 checks the installation position coordinates of the camera 100 among the position coordinates of the virtual screen, and displays the camera installation point (I) in the confirmed position coordinates (S203). For example, if the installation location of the camera 100 has a latitude a1 and a longitude b1, the camera installation point I is displayed at (a1, b1) of the virtual screen (S203).

The control server 300 displays the reference point R of the camera 100 on the virtual screen (S203). The reference point R is set based on the control area viewed by the camera 100 in the preset setting state, and there may be two examples of the setting method as shown in FIGS. 9 and 10 .

According to one embodiment, as shown in FIG. 9 , the latitude and longitude of the ground center point P3 of the control area P1 viewed by the camera 100 in the preset setting state may be set as the reference point R. Of course, since it may be difficult to calculate the exact latitude and longitude of the ground center point P3, an error within a certain range is allowed. The error range is set so that the measured latitude and longitude do not deviate from the control area P1.

According to another embodiment, when there is a building that can be an indicator in the control area P1 viewed by the camera 100 in the preset setting state as shown in FIG. 10 , the latitude and longitude of the building are set as the reference point R can be

If the latitude of the reference point R set in this way is a3 and the longitude is b3, the control server 300 displays the reference point R at the point (a3, b3) on the virtual screen (S203).

The control server 300 sets the area within the left and right specific angle (A) around the reference line connecting the camera installation point (I) and the reference point (R) as the object analysis area (S205). For example, an area within 15 degrees left and right of the reference line can be set as the object analysis area.

The control server 300 displays the tracker at the event occurrence point (S207). The event occurrence point is a coordinate consisting of the latitude and longitude of the location where the event occurred. The control server 300 displays the tracker at the event occurrence point.

The control server 300 displays a moving line connecting the camera installation point (I) and the event occurrence point (S209). The control server 300 checks the coordinates of the event occurrence location, and displays the tracker at the checked location coordinates. For example, if the event occurrence location is latitude a2 and longitude b2, the tracker is displayed at (a2, b2) of the virtual screen. And mark the moving line passing the tracker from the camera installation point (I).

At this time, the position coordinates of the camera installation point (I) and the position coordinates of the reference point (R) are stored in the DB in advance by the control server 300 . The event occurrence location is acquired by the control server 300 through the event generating device 400 or an external system.

The control server 300 rotates the virtual screen clockwise or counterclockwise (S211). In this case, the control server 300 may set the unit angle and rotate it by the unit angle when rotating once. The control server 300 rotates the virtual screen in the arrow direction, that is, counterclockwise or clockwise, until the tracker is included in the object analysis area.

After the control server 300 rotates (S211), it is determined whether the tracker is included in the object analysis area (S213). At this time, if not included, steps S211 and S213 are repeated until included.

If it is determined to be included in step S213, the control server 300 checks the rotation direction and rotation angle of the virtual screen (S215).

The control server 300 calculates the direction opposite to the rotation direction confirmed (S215) as the rotation direction of the camera 100, and calculates the rotation angle confirmed (S215) as the rotation angle of the camera 100 (S217).

The control server 300 rotates the virtual screen, and the object analysis area and the reference point R are fixed even when the virtual screen is rotated. The control server 300 may rotate the virtual screen at once without stopping the rotation of the virtual screen until the tracker is included in the object analysis area. Alternatively, the control server 300 may perform a stepwise rotation by a unit rotation angle. In this case, referring to FIG. 11 , when the virtual screen is rotated counterclockwise by one step, the movement line moves counterclockwise by B1, that is, a unit rotation angle. In this case, the object area does not move, and the moving line of the virtual screen moves together with the virtual screen. Referring to FIG. 12 , the virtual screen rotates in two steps in the counterclockwise direction by B2 again from the position stopped in FIG. 11 . Referring to FIG. 13 , the virtual screen rotates in three steps counterclockwise by B3 again from the position stopped in FIG. 12 . In this case, the tracker is included in the object area. The control server 300 calculates the rotated angle from FIGS. 11 to 13 . If the unit rotation angle is 35 degrees, the rotation angle of the virtual screen is 105 degrees because it has been rotated a total of 3 times.

As such, the control server 300 calculates the clockwise direction opposite to the rotation direction of the virtual screen as the rotation direction of the camera 100 . Then, the rotation angle of the camera 100 is calculated as 105 degrees.

After the control server 300 moves the camera 100 from the remote to the reference point through the above method, the camera 100 is rotated by the rotation direction and rotation angle calculated through the rotation of the virtual screen. It can be directed to the point of occurrence of the event. Therefore, there is no need to change the camera position to the event occurrence location through a conventional complex image analysis algorithm, or to adjust the camera angle daily whether the administrator goes to the camera installation location remotely or directly. That is, while the camera 100 can be automatically moved without the intervention of an administrator, complicated processing is not required.

Meanwhile, FIG. 14 is a hardware block diagram of a server according to an embodiment of the present invention, and shows the hardware configuration of the control server 300 described with reference to FIGS. 1 to 13 .

Referring to FIG. 14 , the server 600 is composed of hardware including a communication device 601 , a memory 603 , a display 605 , an input device 607 , and at least one processor 609 , and a designated A program that is executed in combination with the hardware is stored in the place. The communication device 601 is connected to the processor 609 to transmit and/or receive data through the network 200 . The memory 603 is connected to the processor 609 and stores a program including instructions for executing the configuration and/or method according to the embodiments described with reference to FIGS. 1 to 13 . The program implements the present invention in combination with hardware such as a memory device 603 and a processor 609 . The display device 605 is connected to the processor 609 to output data according to the embodiments described with reference to FIGS. 1 to 13 on the screen. The input device 607 is connected to the processor 609 and is a means for a user input operation according to the embodiments described with reference to FIGS. 1 to 13 . In this case, the display 605 and the input device 607 may be implemented as one device.

The embodiment of the present invention described above is not implemented only through the apparatus and method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium in which the program is recorded.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improved forms of the present invention are also provided by those skilled in the art using the basic concept of the present invention as defined in the following claims. is within the scope of the right.

Claims (14)

As an image control method processed in a control server operated by at least one processor,
detecting the occurrence of an event;
transmitting a preset setting request to at least one camera installed in a location close to the event occurrence location;
transmitting a camera driving signal to at least one preset camera, and
Receiving an image from at least one camera rotated according to the camera driving signal and outputting it to a control screen,
The camera driving signal is
Including a camera rotation direction and a camera rotation angle such that the photographing direction of the at least one rotated camera faces a control area including an event occurrence location. In claim 1,
Between the step of transmitting the preset setting request and the step of transmitting the camera driving signal,
Calculating the camera rotation direction and the camera rotation angle based on the camera installation position coordinates, the event occurrence position coordinates, and the preset reference point coordinates of the camera
Further comprising, a video control method. In claim 2,
The calculating step is
After rotating the virtual screen until a connecting line connecting the tracker displayed on the coordinates of the event occurrence location on the virtual screen and the coordinates of the camera installation location displayed on the virtual screen is included in the object analysis area, the rotation direction of the virtual screen and The opposite direction is calculated as the camera rotation direction, and the rotation angle of the virtual screen is calculated as the camera rotation angle,
The object analysis area is
An image control method that is set within a predetermined angle left and right around a reference line connecting the coordinates of the camera installation location and the coordinates of the reference point respectively displayed on the virtual screen. In claim 3,
The virtual screen is
A video control method in which the point where latitude and longitude intersect is set as the location coordinate. In claim 3,
The reference point coordinates are,
The video control method, which is set as the coordinates of the center of the control area to which the preset camera's shooting direction is directed. In claim 3,
The reference point coordinates are,
The image control method, which is set as the coordinates of the location of the building included in the control area to which the preset camera's shooting direction is directed. delete As an image control method processed in a control server operated by at least one processor,
When an event occurs, transmitting a preset setting request to a camera installed close to the location where the event occurred,
Displaying the camera installation point on the camera installation position coordinates of the virtual screen consisting of the position coordinates, displaying the reference point on the preset camera reference point coordinates of the virtual screen, and displaying the tracker on the event occurrence position coordinates of the virtual screen,
setting an area formed within a predetermined angle left and right as an object analysis area based on a connection line connecting the camera installation point and the reference point;
Rotating the virtual screen until the tracker is included in the object analysis area, calculating a direction opposite to the rotation direction of the virtual screen as a camera rotation direction, and calculating the rotation angle of the virtual screen as a camera rotation angle step,
transmitting a camera driving signal including the camera rotation direction and the camera rotation angle to the camera; and
Receiving the image captured by the camera moving in the camera rotation direction and the camera rotation angle in the preset setting state and outputting it to the control screen
Including, video control method. In claim 8,
The preset reference coordinates are,
The video control method, which is a position coordinate consisting of latitude and longitude included in the control area to which the camera of the preset setting state faces. In claim 8,
The camera rotation angle is
PTZ (Pan Tilt Zoom) A video control method that is the rotation angle in the panning direction of the camera. In claim 8,
The preset setting request is
It is transmitted to at least two or more cameras installed close to the location where the event occurred,
The step of displaying, the step of setting, the step of calculating, the step of transmitting to the camera,
repeated for each of the at least two or more cameras,
The output step is
The video control method of simultaneously outputting the respective images captured by the at least two or more cameras moving toward the control area including the location where the event occurred on the control screen. In claim 11,
The preset setting request is
Request to set a preset uniquely set for each of the at least two or more cameras,
The preset is
PTZ (Pan Tilt Zoom) including the rotation angle of the panning direction and the rotation angle of the tilting direction of the camera, video control method. A communication device for transmitting and receiving data to and from at least one camera through a network;
a memory storing a program for controlling driving of the at least one camera; and
at least one processor executing the program;
The program is
When an event occurrence is detected, a preset setting request is transmitted to at least one camera installed in a position close to the event occurrence position, and each camera rotation direction and each camera rotation angle are transmitted to at least one preset camera, and each A server comprising: receiving an image photographed by the at least one camera from the at least one camera rotated by the camera rotation direction and the respective camera rotation angle and outputting the image to a control screen. In claim 13,
The program is
On the virtual screen where the point where the latitude and longitude intersect is set as the location coordinate, set the object analysis area within a certain angle left and right with the center of the connection line connecting the camera installation point and the reference point,
After rotating the virtual screen until the connecting line connecting the tracker displayed on the event occurrence location coordinates on the virtual screen and the camera installation location point is included in the object analysis area, the direction opposite to the rotation direction of the virtual screen is said Calculating the camera rotation direction, and including instructions for calculating the rotation angle of the virtual screen as the camera rotation angle, the server.

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