KR20210013238A - System and method to be connected video data of CCTV camera system with 3D control system of subway station - Google Patents

Abstract

Disclosed are a system and a method for linking images between a 3D control system and cameras of a subway station. The system comprises: a 3D server for 3D control of a subway station; a plurality of cameras and a video storage server of a CCTV camera system; and a control PC which is connected to the 3D server and the video storage server, and in which a 3D client for outputting specific camera video stream data to 3D map screens of the subway station and CCTV camera video areas of a predetermined size is installed. In order to display the specific camera video stream data in the CCTV camera video areas of a predetermined size on a full screen, the 3D client transmits video channel information (IP addresses and port numbers, or device IDs of the cameras) from the 3D client to a video management client when a ″moving″ event occurs in the CCTV camera video areas on the 3D map screens of the subway station, or a full-screen menu button is pressed in the menu. The video management client outputs, to the 3D client, full-screen camera video stream data of the camera in which the ″moving″ event connected to a display stream pipeline of the camera has occurred.

Description

System and method to be connected video data of CCTV camera system with 3D control system of subway station}

The present invention relates to a 3D control system and a camera image linkage system and method, and more particularly, to a 3D server of a subway station and an image storage server (NVR server) of a CCTV camera system and a 3D client for smart station management, When displaying specific camera video stream data with a 3D map screen of an area of interest in a subway station and a CCTV camera image area of a predetermined size, the 3D client reduces the bandwidth of the camera image data. resolution) Reproducing video stream data, and reproducing high resolution video stream data on a specific camera video screen as a full screen, a 3D control system and a camera video linkage system and method of a subway station.

CCTV systems include multiple cameras that shoot video, a DVR (Digital Video Recorder) or NVR (Network Video Recorder) server, and a hard disk that compresses the image data of each camera and stores it in a hard disk by connecting multiple cameras with UTP cables. It is composed of disk storage and is transmitted to the CCTV control center monitoring server that receives the video and audio data of each camera channel through the communication network, and video data of multiple cameras on the multiviewer screen on the monitor of the control PC connected to the control center monitoring server. Are monitored.

As CCTV cameras, fixed cameras, dome cameras, pan tilt zoom (PTZ) cameras, and dome infrared cameras having infrared LEDs photographed at night are used.

The camera includes a lens, a camera, and a power supply, and includes a dome or top-covered camera housing covering the lens, and is classified into a fixed camera and a rotary camera.

PTZ cameras are equipped with PTZ (Pan, Tilt, Zoom) control functions, Pan fixes the camera position and moves the camera left and right, Tilt (tilt up, tilt down) is a function that moves the camera up and down, and Zoom In/out provides a function to reduce/enlarge the image screen by focusing the focal length of the camera to a near or far distance.

DVR (Digital Video Recorder) is a digital video recorder that encodes images taken by multiple cameras connected by cables within a 1.7km distance and stores them on the hard disk, and distributes and displays images for each camera channel. It is a device, and includes a screen change switch, a screen splitter, a VCR (video player) sensor, and an alarm controller.

Network Video Recorder (NVR) server is a dedicated PC server that records video data of multiple cameras installed on the network, monitors, manages events, and plays video data from multiple cameras. Digital video data is received and compressed through the device. Since it is an IP-only storage device, there is no need for a device that converts an analog camera video signal into a digital camera video signal, and is a device that replaces the existing digital video recorder (DVR).

1 is a block diagram of a conventional DVR system including a CCTV camera and sensor.

A DVR system including a conventional CCTV camera and a sensor includes at least one camera 710 for photographing CCTV images of a surveillance area; A sensor 712 that detects heat when a fire occurs; A hard disk that is connected to the at least one camera 710 and the sensor 712, is assigned a device ID, is connected to at least one camera that photographs an image of a surveillance area, and stores image data recorded from the cameras. DVR 720 with a built-in disk; A computer and HD monitor 723 connected to the DVR 720 and outputting through a screen splitter (2x2, 3x3, 4x4, 5x5) of each CCTV camera in a surveillance area; A control center server that is connected to the DVR 720, monitors images of cameras in the surveillance area, generates an alarm from the control PC when intrusion is detected, and transmits an intrusion alarm to the mobile communication terminal 780 of the set mobile phone number. (740); And a control PC 790 equipped with a DVR card installed with a screen splitter client for CMS monitoring of CCTV images recorded from at least one or more cameras in the surveillance area.

The sensor 712 may be any one of a door magnet detector, a human body detection sensor (PIR sensor), a sound wave detection sensor, a wireless door sensor, and a fire detection sensor.

As a related prior art 1, in Patent Registration No. 10-1400168, "3D virtual security control system and method using a three-dimensional camera" is registered.

The 3D virtual security control system and method using a stereoscopic camera is to convert a 2D one-way image captured through a one-way camera such as a CCTV into a 3D virtual reality image, and convert the omni-directional image captured through a stereoscopic camera, which is an omni-directional camera, into 3D virtual reality. It converts into an image and displays a 3D virtual reality image that has been sequentially converted according to the positions of the cameras in the patrol path, providing a 3D virtual security patrol function, such as a patrol patrolling an actual security area.

2 is a configuration diagram of a 3D virtual security control system using a conventional stereoscopic camera.

3D virtual security control system using a stereoscopic camera

A one-way camera 80 installed on a patrol route among arbitrary security areas and photographing a partial area of the patrol route at an arbitrary position of the patrol route and outputting a one-way image;

A stereoscopic camera (90) installed on a patrol route among arbitrary security areas, and outputting an omnidirectional image by photographing all directions of a partial area of the patrol route at an arbitrary position of the patrol route; And

Acquires and has 3D spatial graphic data for at least an area photographed by the unidirectional camera 80 among the spaces of the patrol path of the security area, and when a patrol request event occurs, the cameras at sequential patrol locations along the patrol route are unidirectional. In the case of the camera 80, a 3D virtual reality image is generated by projecting a unidirectional image texture of unidirectional images captured by the unidirectional camera 80 onto an object of the 3D spatial graphic data, and the camera at the patrol location is a stereoscopic camera ( 90) Including a 3D virtual security control unit 100 that converts the back side omnidirectional image to generate and display a 3D virtual reality image,

The 3D virtual security control unit 100,

A digital image recorder server (NVR server) which receives unidirectional and omnidirectional images captured from the unidirectional camera 80 and the stereoscopic camera 90 and stores them in an image DB for management; And

By acquiring route information including camera identification information and camera location information for each of the at least one patrol route of the security area, and 3D spatial graphic data for a space photographed by the one-way camera among the spaces of the patrol route Unidirectional video and omnidirectional video captured through the unidirectional camera and stereoscopic camera through a digital video record server, and when a patrol request event occurs, if the camera at the patrol location of the patrol route is a unidirectional camera It generates a 3D virtual reality image of the field, and if the camera at the patrol location is a stereoscopic camera, it includes a security control server that converts the acquired omnidirectional image to generate a 3D virtual reality image and displays it.

However, the existing CCTV camera system was used separately for camera image monitoring and security system, but it does not provide a smart station management system that manages the facilities of the station in a 3D virtual space by interlocking with the 3D control system and the CCTV camera system in the subway station. Did.

Patent Registration No. 10-1400168 (Registration Date May 21, 2014), "3D Virtual Security Control System Using 3D Camera", Goldstar Security Co., Ltd.

An object of the present invention to solve the above problem is to interlock with a 3D server of a subway station, an image storage server (NVR server) of a CCTV camera system, and a 3D client for smart station management, and the 3D client is a 3D client of an area of interest in the subway station. A specific camera video stream data is output to the map screen and a CCTV camera video area of a predetermined size, and when displaying specific camera video stream data on the 3D control screen of the current subway station, horizontalx is used to reduce the bandwidth of the camera video data. A 3D control system and camera video linkage system of subway stations that play back high resolution video stream data with a specific camera video screen as a full screen. Provides.

Another object of the present invention is to provide a 3D control system of a subway station and a camera image linkage method.

To achieve the object of the present invention, a 3D control system of a subway station and a camera image linkage system provide a 3D renderer that renders backgrounds and objects of a region of interest (POI) according to a 3D map and events for 3D control of subway stations. A 3D server provided; A plurality of cameras installed in each area of the subway station; CCTV camera system having an image storage server for storing and distributing image data taken from the plurality of cameras; And a control PC connected to the 3D server and the image storage server and installed with a 3D client for outputting specific camera video stream data to a 3D map screen of a subway station and a CCTV camera image area of a predetermined size,

The image storage server uses an NVR server that stores and distributes image data of a plurality of CCTV cameras installed on each floor of a subway station,

The 3D client generates a'moving' event on the CCTV camera image area on the 3D Map screen of the subway station in order to view the specific camera image stream data in a full screen in the CCTV camera image area of the predetermined size, or When the [full screen] menu button is pressed, the video channel information of the camera is transmitted from the 3D client to the video management client, and the video channel information of the camera uses the IP address and port number or device ID of the camera, When the video management client connects the'moving' event connected to the display stream pipeline of the corresponding camera or the full screen camera video stream data of the camera in which the [full screen] menu button event occurred in the menu and transmits the data to the 3D client, the Outputs camera video stream data of full screen.

In order to achieve another object of the present invention, a 3D control system of a subway station and a camera image linkage method receive and store image data of each camera from a plurality of cameras installed in each area of a subway station to an image storage server, and one Alternatively, a plurality of camera image stream data is transmitted to a 3D client, and the image storage server and a 3D client connected to the 3D server render a 3D map screen by rendering the background image and objects of the POI of the 3D modeled subway station. Marking on; Simultaneously popping up and outputting specific camera image data to a CCTV camera image area of a predetermined size on the 3D Map screen; In order to view the specific camera video stream data on a full screen in the CCTV camera video area of the predetermined size, the 3D client generates a'moving' event to the CCTV camera video screen area on the 3D Map screen, or [full screen] in the menu. transmitting video channel information of a corresponding camera from the 3D client to an image management client when a menu button is pressed; And the video management client connects the full screen camera video stream data of the camera in which the'moving' event connected to the display stream pipeline of the camera or the [full screen] menu button event occurred in the menu, and transmits the full screen camera video stream data to the 3D client. Including the step of displaying the camera video stream data on the screen,

The image storage server uses an NVR server that stores and distributes image data of a plurality of CCTV cameras installed on each floor of a subway station,

The camera's video channel information uses the camera's IP address, port number, or device ID.

The 3D control system and camera image linkage system and method of a subway station of the present invention are linked with a 3D server of a subway station, an image storage server (NVR server) of a CCTV camera system, and a 3D client for smart station management, and the 3D client is a subway station. Specific camera video stream data is output to the 3D Map screen of the station's interest area and the CCTV camera image area of a predetermined size, and the bandwidth of the camera video data when displaying specific camera video stream data on the 3D control screen of the current subway station In order to reduce ), low resolution image stream data of a predetermined size horizontally x vertically is reproduced, and there is an effect of playing high resolution image stream data on a specific camera image screen as a full screen.

1 is a block diagram of a conventional DVR system including a CCTV camera and a sensor.
2 is a configuration diagram of a 3D virtual security control system using a conventional stereoscopic camera.
3 is a block diagram of a 3D control system and a camera image linkage system of a subway station according to the present invention.
4 is a system configuration diagram of a 3D client interlocking with a 3D server and an image storage server according to an embodiment of the present invention linking a 3D control screen of a subway station and a camera image of a predetermined size to a full screen camera image.
5 is a video stream data of low resolution to reduce the bandwidth of CCTV camera video stream data on a 3D control screen of a 3D client, and high resolution video stream data is played on a specific camera video screen as a full screen. It is one screen.
6 is a flow chart showing a method for linking a 3D control system and a camera image of a subway station according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram of a 3D control system and a camera image linkage system of a subway station according to the present invention.

4 is a system configuration diagram in which a 3D client interlocking with a 3D server and an image storage server (NVR server) according to an embodiment of the present invention links a 3D control screen of a subway station and a camera image of a predetermined size to a full screen camera image. .

5 is a low resolution video stream data to reduce the bandwidth of CCTV camera video stream data on a 3D control screen of a 3D client, and a high resolution video stream with a specific camera video screen as a full screen. This is the screen that played the data.

This technology is the world's first smart subway station management system using computer graphics (CG) and CCTV camera technology, and a 3D server 100 for 3D control of subway stations and a number of cameras installed in the subway station of the CCTV camera system An image storage server (NVR server) 170 for storing and distributing images of is used.

3D client 101 is CCTV, lighting, shutter, PSD (Platform Screen Door), access control, firefighting, air quality sensor, emergency for 3D control of subway stations, video monitoring of multiple cameras, emergency calls, access management and facility management. It provides call device (SOS emergency phone), toilet evaluation, facility, intrusion detection menu.

Subway stations include entrances, shutters, lighting, station offices, waiting rooms, toilets, transportation card issuing machines, deposit refund machines, ticket gates, escalators, elevators, CCTV cameras, SOS emergency telephones, firefighting equipment, HVAC (main line fans, station fans, air conditioners, coolers). Cooling tower), lighting, shutters, PSD, lifting equipment, electric equipment, drainage equipment, and tunnels.

The Smart Station management system is equipped with a 3D control system and CCTV camera system for subway stations, and in subway stations, station offices, waiting rooms, toilets, entrances, ticket gates and transportation card issuing machines, deposit refund machines, escalators, elevators, PSD, firefighting equipment, HVAC, emergency call device, subway safety equipment equipped with flashlights and portable emergency lights and masks, 3D modeled data and information of major subway facilities objects are stored in databases of 3D servers and DB servers, and subway history The history of facilities in the facility is managed.

The 3D client 101 is connected to a 3D server 100 that renders backgrounds and objects for 3D control in each floor structure of a subway station and an image storage server (NVR server) 170 of a CCTV camera system in which a plurality of cameras are installed. The 3D client 101 is a 3D map that composes a 3D virtual space of a subway station, a 3D control screen in which a background screen of a point of interest (POI) and objects are 3D modeled/rendered, and a CCTV of a predetermined size. Camera video stream data installed in a specific area are simultaneously output to the camera video area.

The 3D control system of the subway station and the camera image linkage system of the present invention include a 3D server 100 of a subway station and an image storage server (NVR server) 170 and a 3D client 101 of a CCTV camera system for smart station management. It is linked, and the 3D client 101 outputs specific camera video stream data to the CCTV camera image area of a predetermined size on the 3D Map screen of the subway station and a partial area of the 3D Map screen,

When the 3D client 101 of the current control PC outputs specific camera video stream data to the 3D Map screen of each floor structure of the subway station and the CCTV camera video area, the bandwidth of the specific camera video stream data of the corresponding area is determined. In order to reduce it, low resolution camera video stream data is played in a CCTV camera video area of a predetermined size horizontally x vertically within the 3D control screen.

The 3D client 101 of the control PC reproduces high resolution video stream data on a full screen of a CCTV camera video screen of a predetermined size output simultaneously with the 3D Map screen of the subway station.

The 3D control system and camera image linkage system of the subway station of the present invention

For 3D control of the structure of each floor of the subway station, 3D maps, background screens, and 3D modeled data of facility objects are stored, and the background and objects of POI (Point Of Interest) are included according to events. A 3D server 100 having a 3D renderer for rendering 3D modeled data;

In the subway station, a number of cameras installed in each area; CCTV camera system including an image storage server (NVR server) 170 for storing and distributing image data taken from the plurality of cameras; And

A 3D client that is connected to the 3D server 100 and the image storage server (NVR server) 170 and outputs specific camera video stream data to a 3D map screen of an area of interest of a subway station and a CCTV camera image area of a predetermined size. Includes a control PC with 101 installed,

The image storage server uses an NVR server that stores and distributes image data of a plurality of CCTV cameras installed on each floor of a subway station,

The 3D client generates a'moving' event on the CCTV camera image area on the 3D Map screen of the subway station in order to view the specific camera image stream data in a full screen in the CCTV camera image area of the predetermined size, or When the [full screen] menu button is pressed, the video channel information of the camera is transmitted from the 3D client to the video management client, and the video channel information of the camera uses the IP address and port number or device ID of the camera, When the video management client connects the'moving' event connected to the display stream pipeline of the corresponding camera or the full screen camera video stream data of the camera in which the [full screen] menu button event occurred in the menu and transmits the data to the 3D client, the Outputs camera video stream data of full screen.

The system includes: an event collection server 121 for collecting events including a fire detection event from a fire detection sensor, an SOS emergency call event of an SOS emergency phone and a subway station office phone, and an intrusion detection event; A DB server 110 that stores each event collected from the event collection server 121 and stores and manages access management and facility information of subway stations; An event distribution server 120 connected to the DB server 110 and connected to the 3D server 100 and storage are further included.

The image storage server 170 uses an NVR server that stores and distributes image data of a plurality of CCTV cameras installed in subway stations.

The image storage server 170 is connected to an image management client 171 that analyzes the image data of each camera installed in various regions on each floor of the subway station and manages it.

The 3D client 101 is connected to the 3D server 100 and the camera and image storage server (NVR server) 170, and displays specific camera image stream data in the 3D Map screen of the current subway station and the CCTV camera image area. At this time, in order to reduce the bandwidth of specific camera video stream data, low resolution video data of a predetermined size horizontally x vertically is played,

In order to view a specific camera video stream data in a full screen in a CCTV camera image area of a predetermined size, the 3D client 101 generates a'moving' event to move the CCTV camera video screen area on the 3D Map screen, or the [full screen] ] If you press the menu button, the video channel information (the camera's IP address and port number, or the camera's video channel information from the 3D client 101 to the video management client 171 linked with the camera and video storage server (NVR server) 170) Device ID, etc.), and the video management client 171 transmits the full screen camera video stream data of the camera in which the'moving' event connected to the display stream pipeline of the camera or the [full screen] menu button event occurred in the menu. It is connected and transmitted to the 3D client 101 of the control PC so that it is played back on a full screen.

The camera's video channel information uses the camera's IP address and port number or device ID.

When video channel information (camera IP address and port number, or device ID, etc.) of a specific camera is received from the 3D client 101 of the control PC to the video management client 171, the full screen size of the specific camera (control PC A specific camera video stream data (full size of the monitor) is received by the 3D client 101, and the specific camera video stream data is popped up and displayed on a full screen.

When the control PC uses two LCD monitors, a 3D Map screen of the control screen is output on the left LCD monitor, and a specific camera with a specific camera's full screen size (total size of the control PC monitor) is displayed on the entire LCD monitor on the right. Output video stream data.

The 3D client 101 is connected to the 3D server 100 and the image storage server 170, and the background screen and objects are 3D modeled/rendered on the 3D Map screen constituting the 3D virtual space for each floor of the subway station. It is displayed and simultaneously outputs specific camera video stream data to a CCTV camera video area of a predetermined size.

For example, while displaying 320 x 240 camera image data in a CCTV camera image area of a predetermined size in the 3D Map screen of the 3D client 101, a high-resolution specific camera with the full screen size (1,920 x 1,080) of the LCD monitor of the control PC Receives video stream data and displays it on the full screen.

When the 3D client 101 closes the full screen of the corresponding camera video screen displayed on the CCTV control screen, it returns to the'original display mode' and displays the 3D Map screen of the area of interest of the subway station and the predetermined size on the 3D control screen. Outputs specific camera video stream data to the CCTV camera video area.

6 is a flow chart showing a method for linking camera images with a 3D control system of a subway station according to the present invention.

The 3D control system and camera-linked video method of subway station

Receives and stores image data of each camera from multiple cameras installed in each area of the subway station to an image storage server (NVR server), and transmits one or more camera image stream data stored in the image storage server to a 3D client Step (S10);

Simultaneously, the image storage server (NVR server) and the 3D client connected to the 3D server render the background image and objects of the 3D modeled subway station's POI and display it on the 3D Map screen. Outputting specific camera image data to a CCTV camera image region having a predetermined width x height (S20); And

In order to view a specific camera video stream data in a full screen in a CCTV camera image area of a predetermined size, the 3D client 101 generates a'moving' event to move the CCTV camera video screen area on the 3D Map screen, or the [full screen] ] When the menu button is pressed (S30), the video channel information of the camera (camera IP address and port number, or device ID) from the 3D client 101 to the video management client linked to the video storage server (NVR server) 170 Etc.) (S40), and the video management client 171 directly transmits a'moving' event connected to the display stream pipeline of the camera or a full screen camera image of the camera in which the [full screen] menu button event occurred in the menu. Connecting the stream data to the 3D client 101 of the control PC and displaying the camera video stream data on a full screen (S50).

The image storage server uses an NVR server that stores and distributes image data of a plurality of CCTV cameras installed on each floor of a subway station,

The camera's video channel information uses the camera's IP address, port number, or device ID.

Thereafter, when the 3D client 101 closes the full screen of the corresponding camera video screen displayed on the CCTV control screen, it returns to the'original display mode' and the 3D map screen of the area of interest of the subway station and the predetermined Specific camera video stream data is output to the CCTV camera video area of the size (S60).

1) Press the [full screen] menu button on the CCTV video screen area on the 3D Map screen from the menu.

2) The camera information (camera IP address, port number, device ID, etc.) corresponding to the image currently displayed from the 3D client is transmitted to the image management client.

3) According to the received camera information, the video management client directly displays the video stream data of the camera in full screen on the monitor of the control PC as a 3D client directly with the corresponding camera video data of the full screen size of the CCTV control screen of the control PC. Make it possible.

4) When the 3D client closes the full screen of the camera displayed on the CCTV control screen, it returns to the original display mode, and outputs the camera video stream data of the CCTV camera image area of a predetermined size on the 3D Map screen.

The subway station's 3D control system consists of a 3D server and a 3D client, and uses computer graphics (CG) technology to create a 3D map and background screen for each floor of the subway station. And objects are displayed with a geometric surface and a polygon consisting of points, lines, and surfaces, and the 3D Map of each floor of the subway station and the background screen and composition objects of the area of interest are displayed by 3D modeling/3D rendering. Is displayed.

In the three-dimensional virtual space of the subway station, the background screens and the appearances of objects on each floor are based on the moving position of a person's first-person object in the three-dimensional coordinate system (x,y,z,t) according to the distance to surrounding objects. It is displayed in three dimensions by moving spatial coordinates. The movement of spatial coordinates according to time (t) according to the movement of the position of a camera or a person's first-person object in the 3D virtual space of the subway station is (x1,y1,z1,t1) -> (x2,y2,z2,t2) ), and the dimension is changed by the change in the height, width, and length of a polygon consisting of points, lines, and surfaces in a three-dimensional virtual space of a subway station and a curved surface, and 3D control The 3D map of each floor of the subway station of the system, the background screen and the three-dimensional form and shape of the constituent objects are changed, and the 3D map of the subway station, the background screen and constituent objects are displayed.

The 3D server 100 transforms the 3D modeled objects into spatial coordinates during 3D modeling and rendering, and the movement of the first person object of the person, rotation of the object by a specified angle around the reference axis of rotation, and size transformation. , Zoom in/out is applied according to the distance between a person's first-person object and surrounding objects.

In the 3D control system, the following technology is used for the first person object of a person who can move in a three-dimensional virtual space of a subway station.

1) Pan: A person's first-person object moves in a 3D virtual space while cameras distributed across various areas of the subway station are fixed, and the 3D map of the surrounding area of interest, the background screen, and the location of the surrounding objects change.

2) Track: The 3D map of the area of interest in the subway station and the background and objects are displayed by moving horizontally according to the camera's location and shooting angle.

3) Tumble or Orbit: 3D Map of the region of interest of the scene corresponding to the camera to which a specific IP address or device ID is assigned while the locations of the objects of the subway station are fixed in the 3D virtual space of the subway station, and the background and surrounding objects Are displayed.

4) Dolly: In the 3D virtual space of the subway station, a person's first-person object moves through the virtual space and moves the camera in the vertical direction of the z-axis toward the surrounding object to move closer to or away from the surrounding objects of the subway station.

5) Pitch: Rotate the camera around the X axis.

6) Yaw: Rotate the camera around the Y axis.

7) Roll: Rotate the camera around the Z axis.

8) Zoom in/out: Provides camera zoom in/out effect.

9) Depth of Field: The depth of the camera is controlled by the function of the focus of the camera and the distance to the object, and the nearest distance value and the farthest distance value are calculated on the three-dimensional coordinates (x,y,z,t) according to time (t). Adjust.

10) tilt: The fixed camera moves up and down.

In the 3D virtual space of the subway station, the canvas is the part where the background and objects are rendered on the 3D Map, and the object is the objects of the subway station organized in the background screen, and is displayed according to the camera's installation position and shooting angle, and the person Based on the first person object of, a 3D map of the area of interest of the subway station by location and the background and surrounding objects are displayed.

Spatial/visual perception in the 3D virtual space of the subway station based on the movement of the camera or the first person object as the view of the camera or the first person object of a person moves in the 3D virtual space of the subway station The 3D modeled background and the location coordinates of the objects are transformed using a 3D geometric surface to achieve this, and the 3D map of the area of interest of the subway station constituting the 3D space, the height, width, and length of the background screen and surrounding objects The dimension is adjusted and displayed by the change in, and the color and texture of the objects whose dimensions have been changed in the 3D virtual space are expressed, and the depth information (z-order) can be displayed using color, depth, and alpha blending. have.

In the subway station's three-dimensional coordinate system (x,y,z), the center of the lens of the camera and the height of the z-axis of the eye of a person's first-person object are adjusted, and the three-dimensional distance is adjusted when the camera or a person's first-person object moves. By providing a zoom in/out function through geometric rendering, a 3D map of the area of interest of the subway station and the background screen and objects are displayed as the first person object of a person moves through space.

The three-dimensional distance (d) between the center point (A) of the first person object of the camera or the person and the center point (B) of the object in the area of interest in the subway station can be calculated as follows.

식에 의해 계산된다. At time t, if A(a,b,c), B(d,e,f) in the XYZ coordinate system, the center point (A) of the first person object of the camera or person and the center point of the object in the subway station (B) The three-dimensional distance (d) is the three-dimensional distance (d)

It is calculated by the equation.

In the 3D virtual space of the subway station, a person's first-person object cranks in in the 3D virtual space of the subway station, just as the actual light is seen through the field of view (FOV). Provides a light (light source, lighting) effect in terms of the camera's shooting angle and lighting, and the lighting effect (weak lighting-darkening the color of pixels) according to the camera's position and shooting angle, and the angle of the camera's lighting. , Strong lighting-brighten the color of the pixels), and the color of the background screen and objects dark/bright or bright/dark, you can adjust the three-dimensional effect.

The embodiments according to the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable recording medium. The computer-readable recording medium may include program instructions, data files, and data structures alone or in combination. Computer-readable recording media include storage, magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -A hardware device specially configured to store and execute program commands in magneto-optical media, and storage media such as ROM, RAM, flash memory, and the like may be included. Examples of the program instructions may include those generated by a compiler, and high-level language codes executed by a computer using an interpreter as well as machine language codes. The hardware device may be configured to operate as one or more software modules to perform the operation of the present invention.

As described above, the method of the present invention is implemented as a program and can be read using software of a computer, and a recording medium (CD-ROM, RAM, ROM, memory card, hard disk, magneto-optical disk, storage device, etc.) ) Can be stored.

Although it has been described with reference to a preferred embodiment of the present invention, various modifications or variations of the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims by those of ordinary skill in the relevant technical field You will understand that it can be done.

100: 3D Server 101: 3D Client
110: DB server 120: event distribution server
121: event collection server 130: storage
170: image storage server 171: image management client

Claims (5)

A 3D server having a 3D renderer for rendering the background and objects of a POI according to a 3D map and an event for 3D control of a subway station;
A plurality of cameras installed in each area of the subway station; CCTV camera system having an image storage server for storing and distributing image data taken from the plurality of cameras; And
A control PC connected to the 3D server and the image storage server and installed with a 3D client that outputs specific camera video stream data to a 3D map screen of a subway station and a CCTV camera image area of a predetermined size,
The image storage server uses an NVR server that stores and distributes image data of a plurality of CCTV cameras installed on each floor of a subway station,
The 3D client generates a'moving' event on the CCTV camera image area on the 3D Map screen of the subway station in order to view the specific camera image stream data in a full screen in the CCTV camera image area of the predetermined size, or When the [full screen] menu button is pressed, the video channel information of the camera is transmitted from the 3D client to the video management client, and the video channel information of the camera uses the IP address and port number or device ID of the camera, When the video management client connects the'moving' event connected to the display stream pipeline of the corresponding camera or the full screen camera video stream data of the camera in which the [full screen] menu button event occurred in the menu and transmits the data to the 3D client, the The 3D control system and camera linkage system of subway stations that output full-screen camera video stream data. The method of claim 1,
When the 3D client closes the full screen of the corresponding camera video screen displayed on the CCTV control screen, it returns to the'original display mode' again, and the 3D map screen of the area of interest of the subway station and the predetermined size CCTV camera on the 3D control screen The 3D control system and camera linkage system of subway stations that output specific camera video stream data to the video area. The method of claim 1,
An event collection server that collects events including fire detection events, SOS emergency call events, and intrusion detection events;
A DB server that stores each event collected from the event collection server and stores access management and facility management information of subway stations;
A 3D control system and camera linkage system of a subway station further comprising an event distribution server and storage connected to the DB server and connected to the 3D server. Receives and stores video data of each camera from a plurality of cameras installed in each area of the subway station to an image storage server, transmits one or more camera image stream data to a 3D client, and connects to the image storage server and the 3D server The 3D client renders the background screen and objects of the 3D modeled area of interest (POI) of the subway station and displays them on the 3D Map screen;
Simultaneously popping up and outputting specific camera image data to a CCTV camera image area of a predetermined size on the 3D Map screen;
In order to view the specific camera video stream data on a full screen in the CCTV camera video area of the predetermined size, the 3D client generates a'moving' event to the CCTV camera video screen area on the 3D Map screen, or [full screen] in the menu. transmitting video channel information of a corresponding camera from the 3D client to an image management client when a menu button is pressed; And
The video management client connects the'moving' event connected to the display stream pipeline of the camera or the full screen camera video stream data of the camera in which the [full screen] menu button event occurred in the menu, and transmits the video stream data to the 3D client. Including the step of expressing the camera video stream data,
The image storage server uses an NVR server that stores and distributes image data of a plurality of CCTV cameras installed on each floor of a subway station,
The camera's video channel information uses the camera's IP address, port number, or device ID. The method of claim 4,
When the 3D client closes the full screen of the corresponding camera video screen displayed on the CCTV control screen, it returns to the'original display mode' again, and the 3D map screen of the area of interest of the subway station and the predetermined size CCTV camera on the 3D control screen A method of linking a camera with a 3D control system of a subway station, further comprising the step of outputting specific camera image stream data to the image area.

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