KR20240051761A - CCTV camera remote monitoring control function - Google Patents

Abstract

The present invention is a CCTV camera control method, in particular, it is possible to remotely monitor and control CCTV through a control program installed on a server and a personal computer, and in addition, automatically tracks, monitors and records a specific target using multiple CCTVs. It relates to a CCTV camera control method, characterized in that it is possible to control a plurality of CCTV cameras that capture images and control the CCTV cameras, transmit at least one image among the images of the CCTV cameras, and the CPU and the control program A communication control unit exchanges data with the installed central server, receives CPU operation commands and camera control data from the central server, and transmits the execution results to the central server, and camera video signals transmitted from multiple cameras through coaxial cables, etc. a video signal input unit that accepts a video signal, and a video input signal switching unit that selects the input camera video signal under control of a CPU; and a matrix switcher including a composite signal output unit that converts the video input signal into an analog composite signal for transmission to the central server and outputs the composite signal to the video input terminal of the computer, and the matrix switcher, the video signal transmission line, and the data transmission line. A central server that is connected to each other, receives video from the matrix switcher through the video signal transmission line, provides a signal for CCTV camera control to the matrix switcher through the data transmission line, and digitizes the provided video signal, and the central server.
It is connected to a network, receives digitized images from a central server, is electrically connected to at least one local computer that provides control signals for controlling CCTV cameras, and the central server, and receives digitized images from the central server. , an image of a specific object to be searched is input from a computer of a national or private institution, and the image received from the central server is matched with the image received from a national or private institution to check whether a specific object exists. It is characterized by including a specific object management server that confirms the object that exists and confirms the object, notifies the relevant organization after confirming the object, and simultaneously induces continuous tracking and management of the specified object.

Description

CCTV camera remote monitoring control function {CCTV camera remote monitoring control function}

The present invention relates to a CCTV camera control method. In particular, it is possible to remotely monitor and control CCTV through a control program installed on a server and a personal computer, and also automatically tracks, monitors and monitors a specific target using multiple CCTVs. It relates to a method of controlling a CCTV camera, characterized in that recording is possible.

In a CCTV (closed-circuit television) system that remotely monitors multiple cameras, a video matrix switcher is used to receive video signals from each camera and output the video to a general analog CCTV monitor.

In this conventional system, a separately connected matrix control panel (keyboard) is connected to the video matrix switcher to control the camera, and video signals from the camera are transmitted through a separate video line and monitored on a monitor.

Figure 1 shows a schematic diagram of a CCTV system using a conventional video matrix switcher. Video signals are input from multiple cameras (CA-1, ..., CA-n) to the centrally located matrix switcher, and the matrix switcher is connected to the monitor of the main management office and the monitors and control keyboards at each remote location. It can be seen that it is done. In Figure 1, the solid signal line means a video signal line and the dot-and-dashed signal line means a data line for camera control. As shown in Figure 1, the ID of many cameras installed at each site has been used in the past. must be remembered separately, and the desired camera was selected using a separately installed keyboard to display the screen and control the camera. As a result, the control function of the camera and the entire system was complicated and the device was complicated. Additionally, since it was difficult to process and store screen data for each camera, there was a disadvantage that later search was difficult.

The present invention was created to solve the above problems. By installing a control program that controls camera control and video display on a server connected to CCTV, video surveillance and control of each camera can be easily performed by using the control program in the server. Local users can control CCTV by accessing the server through their own terminals (i.e. personal computers). In this case, there is no need for separate line laying, freedom from distance restrictions, and multiple It provides a CCTV system and a control program that allows local users to control CCTV at the same time. At the same time, when a specific target is limited, an automatic tracking program is run to take long-distance, mid-distance, and short-distance shots, and successively captures other CCTVs. The purpose is to provide a device to continuously monitor the target through and notify the police station or other requested national or private organizations.

As a means to achieve the above object, the present invention includes a plurality of CCTV cameras that capture images; Controls the CCTV camera, transmits at least one video from the CCTV camera, exchanges data with the CPU and a central server on which a control program is installed, and receives operation commands of the CPU and camera control data from the central server, A communication control unit that transmits the performance results to the central server, a video signal input unit that accepts camera video signals transmitted from multiple cameras through coaxial cables, etc., and a video input signal switching unit that selects the input camera video signals under CPU control. wealth; and a matrix switcher including a composite signal output unit that converts the video input signal into an analog composite signal for transmission to the central server and outputs the composite signal to the video input terminal of the computer, and the matrix switcher, the video signal transmission line, and the data transmission line. A central server that is connected to each other, receives video from the matrix switcher through the video signal transmission line, provides a signal for CCTV camera control to the matrix switcher through the data transmission line, and digitizes the provided video signal, and the central server It is connected to a network, receives digitized images from a central server, is electrically connected to at least one local computer that provides control signals for controlling CCTV cameras, and the central server, and provides digitized images from the central server. Receives an image of a specific object to be found from a computer of a national or private institution, matches the image received from the central server with the image received from a national or private institution, and confirms whether a specific object exists to find the specific object. It is configured to include a specific object management server that confirms the object that exists, confirms the object, notifies the relevant organization after confirming the object, and at the same time induces continuous tracking and management of the specified object, and the matrix switcher and the central server are NTSC. Connected by a line transmitting a complex signal, the central server and the local computer are connected to a network, and the network uses a network or wireless communication network consisting of at least one of a LAN cable, UTP, STP, FTP cable, and CAT cable, and the The central server includes an image input signal switching unit that selects an image signal provided from the matrix switcher, and the specific object management server 500 is configured to detect the target object and the movement of the target object from the captured image image. An image decoder unit 510 that converts the image into digital information, an image information processing unit 520 that extracts the movement of the detected target object, and an image matching unit that matches the detected data with images requested from national or private organizations. It includes an object confirmation unit 540 that confirms the object when it is determined to be the same object by matching more than the standard 530 and an object tracking unit 550 to continuously track the confirmed object image, and is tracked by a government agency or a private agency. When a request for cooperation from a target person is received, an image input step (S10) that registers the request, an image information acquisition step (S20) that digitizes the video image acquired from a CCTV camera, and a motion area is detected and extracted from the acquired image information. The image obtained in the motion detection and motion area extraction step (S30), the object detection step (S40) that separates and extracts the face image from the motion region, and the image of a specific person provided by a private institution or government agency and the object detection step. A specific target confirmation step (S50) that determines whether the image matches by comparative analysis and confirms the specific target if the images match; an emergency situation notification step (S60) that notifies the relevant organization of the existence of an object matching the image and induces dispatch; After the emergency situation notification step, the motion estimation and tracking step (S70) is performed to continuously track the movement of a specific object to lead to the emergency arrest of a suspect or to find a lost infant or elderly person with dementia, and includes a motion detection and motion area. The extraction step (S30) consists of background screen registration, motion detection, and movement area separation processes. Background screen registration learns the background screen, registers the average value of the background screen and the standard deviation of the degree of change, and the registered background screen is A moving average model is used to adapt to changes in lighting as the weather changes throughout the day. Motion detection is performed on the pixels of each frame, and the difference between the pixel value of the current screen and the registered background screen is registered. The characteristic is that if the value is more than a certain multiple of the standard deviation value, it is determined that there is movement in the corresponding pixel.

As described above, the present invention installs a control program that controls camera control and video display on a server connected to CCTV, so that video surveillance and control of each camera can be easily performed by using the control program in the server, and local users can easily monitor and control the video of each camera. You can control CCTV by accessing the server through your own terminal (i.e. personal computer). In this case, there is no need for separate line laying, you can be free from distance restrictions, and multiple local users can control CCTV at the same time. It provides a CCTV system and a control program for it, and at the same time, when a specific target is limited, an automatic tracking program is run to take long-distance, mid-distance, and short-distance shots, and continuous surveillance is conducted through other CCTVs. It has the effect of providing a mechanism to notify police stations or other requested national and private organizations.

Figure 1 is a configuration diagram of a conventional CCTV camera control device.
Figure 2 is a block diagram of the CCTV camera control device of the present invention.
Figure 3 is a detailed configuration diagram of the present invention.
Figure 4 is a flow chart showing the operation control of the present invention.

Hereinafter, the operating principle of a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings and description. The drawings shown below and the description given below are for preferred implementation methods among various methods for effectively explaining the features of the present invention, and the present invention is not limited to the drawings and descriptions below. In addition, the present invention is described below. In explaining, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. The terms described below are defined in consideration of the functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, the definition should be made based on the overall content of the present invention.

In addition, the preferred embodiments of the present invention to be implemented below are those that are already provided in each system function configuration or are commonly provided in the technical field to which the present invention belongs in order to efficiently explain the technical components that make up the present invention. The configuration will be omitted whenever possible, and the description will focus on the functional configuration that must be additionally provided for the present invention. If a person has ordinary knowledge in the technical field to which the present invention pertains, he or she will be able to easily understand the functions of components that have already been used in the past among the functional configurations not shown and omitted below, and also the configurations omitted as above. The relationship between the elements and the components added for the present invention will also be clearly understood. In addition, the following examples will be based on common knowledge in the technical field to which the present invention pertains in order to efficiently explain the core technical features of the present invention. Terms will be appropriately modified and used so that those who have the skill can clearly understand them, but this does not limit the present invention. As a result, the technical idea of the present invention is determined by the claims, and the following examples are based on the progressive invention of the present invention. It is only a means for efficiently explaining the technical idea of the present invention to those skilled in the art.

all.

Figure 2 is a block diagram of the CCTV camera control device of the present invention.

Figure 3 is a detailed configuration diagram of the present invention.

Figure 4 is a flow chart showing the operation control of the present invention,

As shown in Figures 2 and 3, the CCTV system of the computer remote monitoring control method according to this embodiment includes a plurality of CCTV cameras.

(10-1 to 10-n), a computer video matrix switcher 100, a central server 200, a local computer 300, and a specific target management server 500 are provided.

Here, video images captured from a plurality of CCTV cameras 10-1 to 10-n, that is, video signals, are input to the matrix switcher 100 through a video line. Of course, the control signal (i.e., camera control data) provided from the central server 200 to the matrix switcher 100 is provided to the CCTV cameras 10-1 to 10-n through the data line. In FIG. 2, among the lines between the CCTV cameras 10-1 to 10-n, the matrix switcher 100, and the central server 200, the solid line represents a video line, and the dashed line represents a data line for camera control.

Here, the computer video matrix switcher 100 connects video input and video output by receiving a video switching command, which is one of the control signals, through the RS485 data line. The RS485 data line refers to a line that can communicate in accordance with the RS485 standard, a serial communication protocol standard. In addition, the matrix switcher receives camera control data (i.e., control signal) from the central server 200 through the RS485 data line and transmits the camera control data to the CCD cameras (10-1 to 10-n) through the RS485 data line. And, the matrix switcher 100 is connected to the central server 200 through the video line and data line.

Through this, video signals from CCTV cameras 10-1 to 10-n are provided to the server, and control signals from the central server 200 are received. The central server 200 is connected to at least one local computer 300 through a communication network.

The central server 200 and the local computer 300 are installed with a control program 400 that controls the matrix switcher 100 and allows the user to perform a monitoring function.

Of course, the user using the central server 200 and the local computer 300 can view the video captured from the camera through the GUI screen on the monitor of the PC on which this control program 400 is installed and operate the menu button on the screen for each CCTV. You can select a camera, monitor it, and perform various camera control functions. Recently, because GUI-type programs have become common, it is possible to easily perform surveillance and camera control functions using a mouse, etc. on a screen displayed on a monitor.

The central server 200 converts the analog video signal into digital video data and transmits it to the local computer 300 connected through a network. Of course, the camera image switching command and camera control data received from the local computer 300 are transmitted to the matrix switcher 100. The local computer 300 draws a camera icon on the monitor through the aforementioned GUI method. By displaying it on a map (i.e., a map), the user can easily select the image switching of the computer video matrix switcher. Additionally, image data is displayed on the monitor. Hereinafter, the matrix switcher 100 of this embodiment will be described in more detail with reference to FIG. 3. The matrix switcher 100 of this embodiment is connected to the central server 200 through the CPU 160 and a data line, and receives CPU 160 operation commands and camera control data through data exchange with the central server 200. , a communication control unit 170 that transmits performance results to the central server 200, an internal signal circuit control unit 150 that controls the signal circuit inside the matrix switcher 100 by commands from the CPU 160, and a plurality of cameras. A video signal input unit 110 that receives a camera video signal transmitted from (10-1 to 10-n) through a video signal line such as a coaxial cable, and a video signal input unit 110 that receives the input camera video signal from the internal signal circuit control unit 150.

The video input signal switching unit 120 selects the video input signal, the amplification unit 130 amplifies the switched video input signal, and converts the video input signal into an NTSC composite signal and converts the video signal to a central server 200. ) and an NTSC composite signal output unit 140 that outputs to the video input terminal. At this time, the video output of the composite signal output unit 140 is input to the video input terminal of the central server 200 through a coaxial cable. And, the communication control unit 170 and the central server 200 communicate through serial communication (eg, RS232, RS485, etc.).

Here, the camera control data is data for functions such as camera rotation, zoom, and camera switching, and can be set and selected by the user in the control program 400. Additionally, the internal signal circuit control unit 150 may be functionally integrated into the CPU 160.

In this way, the matrix switcher 100 processes the camera image signal and provides the processed image signal to the video input terminal of the central server 200.

And, the matrix switcher 100 performs functions (tasks) by the control program 400 built into the central server 200 and the local computer 100 and drives the CCTV cameras 10-1 to 10-n. Data for control and control (camera control data) is also generated by the control program 400 built into the central server 200 and the local computer 300.

Furthermore, as shown in FIG. 3, the central server 200 of this embodiment has a built-in control program 400. Through this, it is possible to generate data for camera control and directly control the camera. The specific target management server is a server that comprehensively manages missing children, missing elderly people with dementia, or urgently wanted people, and allows relevant organizations to identify specific people through montages or photos. If tracking is requested, it can be registered and executed in the specific object management server. That is, the target object and the movement of the target object are detected in the video image captured by the CCTV camera, and the target object detection unit ( 500) is an image decoder unit 510 that converts the captured image image into digital information in order to detect the target object and the movement of the target object from the captured image image, and an image information processing unit that extracts the movement of the detected target object, etc. Includes (520). In more detail, the image information processing unit 520 extracts motion detection and a motion area from the information obtained from the image decoder unit 510, and uses the Adaboost method in the area to determine interest.

A target object is detected, and vision information of the object is extracted using a Kalman filter for the detected object. Then, an image matching unit 530 and a standard match the detected data with images requested from national or private organizations. When the above matching is made and it is determined that the object is the same, it further includes an object determination unit 540 that confirms this and an object tracking unit 550 for continuously tracking the confirmed object image.

Hereinafter, a method for detecting a target object and its movement in the target object detection unit will be described with reference to FIG. 4.

The flow chart of FIG. 4 includes an image input step (S10), an image image information acquisition step (S20), a motion detection and motion area extraction step (S30), an object detection step (S40), a specific object confirmation step (S50), It consists of an emergency notification step (S60) and a motion estimation and tracking step (S70). The image input step (S10) registers a request for cooperation from a person to be tracked from a state agency or private agency.

The image information acquisition step (S20) digitizes the video image acquired from the CCTV camera. The motion detection and motion region extraction step (S30) consists of background screen registration, motion detection, and motion region separation processes. Wallpaper registration learns the background screen and registers the average value of the background screen and the standard deviation of the degree of change. The registered background screen uses a moving average model to adapt to changes in lighting depending on daily weather changes. Motion detection is performed on the pixels of each frame, and the pixel value of the current screen and the pixel of the registered background screen are used. If the difference in value is more than a certain multiple of the registered standard deviation value, it is determined that there is movement in the corresponding pixel. For example, if the standard deviation value is a certain multiple, it can be determined that an object is moving in the space (e.g., room) where the camera device according to the present invention is located. According to a preferred embodiment, after detecting motion in each pixel, a morphology filter can be applied to reduce the influence of noise. When motion is detected, a histogram is drawn indicating the number of moving pixels in the horizontal and vertical directions of the image, and a Gaussian mixture model is applied to the histogram to separate independent moving objects.

The object detection step (S40) applied the “Haar-based object detection method,” known as one of the best methods among existing object detection methods. This method is a very effective method of detecting a target by learning the detection target using the Adaboost method, but since it requires a lot of calculations to detect the target in real time in a video, the amount of computation is reduced by detecting the target only in the motion area extracted in the previous step (S30). It was drastically reduced.

The specific target confirmation step (S50) compares and analyzes the image of a specific person provided by a private institution or government agency with the image obtained in the target detection step to determine whether they match. And, if the images match, the specific target is confirmed.

Afterwards, in the emergency situation notification step (S60), the relevant organization is notified of the existence of an object with a matching image. Afterwards, the previously known "3D Kalman filter for image motion estimation" method was applied to motion estimation and tracking (S70). . In the present invention, motion estimation is not a purpose in itself, but the main purpose is to accurately estimate motion at each pixel to determine the next step. In other words, the movement of a specific object is continuously tracked, and in order to ensure ease of tracking, long-distance, mid-distance, and near-distance photography is taken, and the movement of a specific object is continuously filmed to continuously track changes in position.

10: CCTV camera
100: Computer video matrix switcher
200: central server
300: Local computer
400: Control program
500: Specific target management server

Claims (1)

Multiple CCTV cameras that capture video; Controls the CCTV camera, transmits at least one video from the CCTV camera, exchanges data with the CPU and a central server on which a control program is installed, and receives operation commands of the CPU and camera control data from the central server, A communication control unit that transmits the performance results to the central server, a video signal input unit that accepts camera video signals transmitted from multiple cameras through coaxial cables, etc., and a video input signal switching unit that selects the input camera video signals under CPU control. wealth; and a matrix switcher including a composite signal output unit that converts the video input signal into an analog composite signal for transmission to the central server and outputs the composite signal to the video input terminal of the computer, and the matrix switcher, the video signal transmission line, and the data transmission line. Central servers that are connected to each other, receive video from the matrix switcher through the video signal transmission line, provide a signal for CCTV camera control to the matrix switcher through the data transmission line, and digitize the provided video signal; At least one local computer is connected to the central server through a network, receives images digitized by the central server, and provides control signals for controlling CCTV cameras, and is electrically connected to the central server and digitized from the central server. An image is provided, an image of a specific object to be searched is input from a computer of a national or private institution, and the image received from the central server is matched with the image received from a national or private institution to check whether a specific object exists. Confirms the existence of a specific object and confirms the object, notifies the relevant organization after confirming the object, and at the same time includes a specific object management server that guides continuous tracking and management of the specified object, and the matrix switcher and the central Servers are connected by lines that transmit NTSC composite signals, and the central server and local computers are connected through a network.
The network uses a network or a wireless communication network consisting of at least one of a LAN cable, UTP, STP, FTP cable, and CAT cable, and the central server includes a video input signal switching unit that selects a video signal provided from the matrix switcher,
The specific object management server 500 detects the target object and the movement of the target object from the captured image image, and includes an image decoder unit 510 that converts the captured image image into digital information and the movement of the detected target object. An image information processing unit 520 that extracts the image, etc., an image matching unit 530 that matches the detected data with images requested from national or private organizations, and a target determination unit that confirms the target if it is judged to be the same target by matching more than the standard. (540) and an object tracking unit 550 for continuously tracking a confirmed target image, and an image video input unit that registers a request for cooperation of a person to be tracked from a government agency or private institution.
An image information acquisition step (S20) to digitize video images acquired from the system (S10) and a CCTV camera, a motion detection and motion region extraction step (S30) to detect and extract a motion region from the acquired image information, and a motion a target detection step (S40) of separating and extracting a face image from the area; A specific target confirmation step (S50) in which the image of a specific person provided by a private or national organization and the image acquired in the target detection step are compared and analyzed to determine whether they match, and if the images match, the specific target is confirmed (S50) an emergency situation notification step (S60) of inducing dispatch by notifying the existence of a matching object; After the emergency situation notification step, it continuously tracks the movement of a specific object, including a motion estimation and tracking step (S70) that leads to urgent arrest of a suspect or finding a lost infant or elderly person with dementia.
The motion detection and motion area extraction step (S30) consists of background screen registration, motion detection, and motion area separation processes. Background screen registration learns the background screen and registers the average value of the background screen and the standard deviation of the degree of change, The registered background screen uses a moving average model to adapt to changes in lighting depending on daily weather changes, and motion detection is performed on the pixels of each frame, including the pixel value of the current screen and the pixel of the registered background screen. A CCTV camera control method characterized in that it is determined that there is movement in the corresponding pixel when the difference in value is more than a certain multiple of the registered standard deviation value.