WO2016125974A1

WO2016125974A1 - Integrated image control system, and image transmitting and sharing method using same

Info

Publication number: WO2016125974A1
Application number: PCT/KR2015/009904
Authority: WO
Inventors: 김승광; 조범석; 이현태
Original assignee: 주식회사 씨앤에스아이; 목원대학교 산학협력단
Priority date: 2015-02-05
Filing date: 2015-09-22
Publication date: 2016-08-11
Also published as: KR101538064B1

Abstract

The present invention relates to an integrated image control system for encrypting, using an encryption device, an image captured by a closed circuit television camera or a smart device, for transmitting the encrypted image to a main control unit automatically accessed through a mobile communication network, for encrypting an image signal transmitted from the main control unit, and for transmitting the encrypted image signal to an image receiving and display unit through a wired/wireless internet network.

Description

Video integrated control system and video transmission and sharing method

The present invention relates to an integrated video control system, and more particularly, to encrypt a video photographed by a closed circuit camera or a smart device, and then to transmit the image signal transmitted from the main control unit to the main control unit which is automatically connected through the mobile communication network. The present invention relates to a system for encrypting and transmitting the encrypted image to the image receiving display unit through a wired or wireless internet network.

In general, a video security system using a camera commonly referred to as a closed-circuit television (CCTV) has been adopted and used as a surveillance and security method in many fields. Recently, the trend is gradually moving from analog surveillance cameras to high performance digital network cameras with image compression technology.

In addition, so-called intelligent cameras, including image recognition and event detection technologies, are emerging as next generation technologies, and related technology development is a major issue in related fields.

Using the video surveillance system, the police department monitors road conditions or vehicle crackdowns through wired or wireless communication or wired or wireless Internet.

Surveillance video captured through wireless communication or wireless Internet is received and controlled by the control server. In this process, each video signal cannot be encrypted, but it is encrypted when the video signal passes through the encryption server of the control server. Since a large amount of data is encrypted by one encoder, it takes a long time to encrypt and a large load on the encryptor. In addition, there is a problem that the security of the surveillance video is not made, there is a problem that the security of the video is not made when sending the video from the control server to the device of the lower authority.

In addition, side effects due to the universalization of the video surveillance system is appearing as a social problem, one of which is the problem of personal information exposure. Recently, various portal sites provide users with CCTV images of a specific area. By displaying the people exposed to the images without any filtering, information on where and what an individual was doing at a particular time, that is, personal privacy Infringement is a controversial issue.

To prevent this, it is necessary to introduce an encryption function to the video surveillance system that encrypts and transmits the surveillance video acquired in real time, and allows only a person who has the authority to view the video to view the received video with the decryption key. need. As the method of applying the encryption function to the video surveillance system, the following two methods may be possible.

One is the entire image encryption method that does not visually recognize the image itself unless the entire area of the image is encrypted and decrypted. The other is an area that may invade the privacy of the individual represented by the face of the image. It is a region of interest encryption method called so-called privacy masking that extracts the image into a video recognition function capable of face recognition and encrypts only that region.

In the former case, some problems occur when the entire image encryption is performed. In other words, considering the case of the monitoring personnel who perform monitoring in the control center, it is common to separate the authority having the authority to view normal images from the personnel who perform the general monitoring. Since it is impossible to identify itself at all, it makes no sense to perform general monitoring. In addition, even if the user wants to provide life information such as geographic information and traffic information to the general users through the camera image, if the entire encryption is performed in preparation for any infringement of personal information, it becomes impossible to provide information itself.

In addition, from the system point of view, continuous continuous encryption in real time causes a problem of wasting system resources to encrypt even non-critical information.

Due to the peculiarities of such video information, only the necessary area is extracted and transmitted using the latter of the two encryption methods described above, and then encrypted and transmitted.On the receiving side, a specific event occurs that requires the identification of an individual. It is common to perform image encryption using a method that allows a person to decrypt and check the image. This means that only necessary information is encrypted according to the video content.

However, from the point of view of encryption based on the video contents, the important method is overlooked in the current methodology. In other words, it is for the person who is exposed to the image to prevent the portion of the image content infringes the personal information.

However, there is something that must be considered for anyone who sees such images. For example, in the case of violent or disgusting video such as assault, special theft, sex crimes or self-defense or death of a vehicle, accidents such as life vehicle accidents, the viewer may unintentionally accept harmful information, which may cause a tremendous shock. I can receive it. For example, assault incidents have recently been broadcast without filtration through the news, causing a great social controversy.

Of course, in the case of broadcasting contents or VoD-based web services, these may be prevented by blocking them in advance, but in the case of a video surveillance system that transmits and receives images in real time, there is always a possibility that images containing such contents may occur at any time. There is a problem. Considering this problem in terms of video encryption, if the encryption method is used to protect personal information only, the personal information of the subject who is doing something is protected in the video, but the action itself is exposed. If it is, it is necessary to additionally consider a method of preventing it from being recognized at the receiving end.

Related prior arts include Korean Patent Publication No. 10-2013-0067530, Korean Patent Publication No. 10-2007-0010554, and Korean Patent Publication No. 10-1012281.

The present invention encrypts the image taken by a closed circuit camera or a smart device, and transmits one-way to the main control unit which is automatically connected through the mobile communication network, and encrypts the image signal transmitted from the main control unit via a wired or wireless Internet network. An integrated control system for transmitting images to an image receiving display unit is provided.

In accordance with one aspect of the present invention, there is provided a video integrated control system, comprising: a closed circuit camera for photographing an object in a fixed place or a mounted vehicle; A smart device that photographs an object while moving and transmits an encrypted video signal through a built-in program to a main controller through a mobile communication network in one direction; An encoder for encrypting an image photographed by the closed circuit photographing apparatus; A wireless transceiver which transmits the encrypted image one-way wirelessly and receives a command from the main controller; Decryption server for receiving and decrypting the encrypted video signal transmitted from the wireless transceiver through the mobile communication network, and displays the decrypted image on the large display of the shared control server, and transmits the selected video to the mobile terminal or shared server of the lower authority Including a main controller, when the smart device and the closed circuit camera is powered on, the shared control server or the main controller is automatically logged in, and a program version of the program provided by the main controller is provided. The smart device and the closed circuit camera are automatically logged in to the shared control server or the main controller to occupy one line, and the image is transmitted only in one direction and the external connection is blocked. Teeth of lower organs as video receiving display And transmitting the image to the terminal or a shared server, and a two-way communication with the text or audio,

When the main control unit inputs information in text, the main controller converts the voice into a lower organ and transmits the voice.

The main control unit is characterized in that the PTZ control for the closed circuit camera.

The encryptor is characterized by using one or a combination of SSL, AES, DES and RSA encryption methods.

The encryptor is characterized by using a region of interest encryption technique.

In another embodiment of the present invention, a method for transmitting a video signal using the integrated video control system, the method comprising: checking the program version of the closed circuit camera and the smart device compared to the version of the program provided by the main controller; The closure requesting the login to the main control unit through the login information stored in the closed circuit camera and the smart device through which the program version is checked through comparing and checking the program version, and the login requesting login from the main control unit. Verifying and logging in to login information which is user information of the circuit camera and the smart device; The resolution, bitrate, and environment control table (ECT) information is transmitted from the closed circuit camera and the smart device logged into the main controller to the main controller to check and confirm the information. Adjusting the setting by the main controller according to the resolution, bitrate, and environment setting information, and encrypting the image signal photographed by the closed circuit camera and the smart device after the setting is completed, and transmitting the image signal to the main controller, And stopping transmission of the encrypted video signal or logging out from the main controller, the closed circuit camera, or the smart device.

The integrated video control system according to the present invention has a monopoly and security because the closed-loop camera or a smart device occupies one line and transmits only in one direction so that an external device can not be connected and controlled.

That is, after encrypting the image taken by a closed circuit camera or a smart device with an encrypter, the image is transmitted to the main controller through the mobile communication network, the image signal transmitted from the main controller is encrypted, and then the mobile communication network or the wired / wireless internet network is encrypted. The video signal is transmitted to the video receiving display unit, so that the security of the video signal is enhanced, and the video signal transmitted from the closed circuit camera and the smart device is transmitted to the main control unit to which the video signal is automatically connected. There is an advantage to be avoided.

In addition, since the closed circuit camera and the smart device are not directly connected to the image receiving display unit, the wireless communication connection line is reduced so that the closed circuit camera and the smart device do not become overloaded so that high quality images can be secured. There is an advantage that the connection cost of the mobile communication connection line is reduced.

1 is a view showing the configuration of an integrated video control system according to an embodiment of the present invention.

2 is a block diagram showing an image transmission method using an image integrated control system according to the present invention.

3 is a block diagram showing a video sharing method using a video integrated control system according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. Like elements in the figures are denoted by the same reference numerals wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a view showing a video integrated control system according to an embodiment of the present invention, which encrypts the image taken by the camera 11 to transmit to the main control unit 30 that is automatically connected through the mobile communication network (20) The closed circuit photographing apparatus 10 receives the encrypted video signal through wireless communication, and transmits the video signal transmitted from the mobile communication network 20 and the mobile communication network 20 to the main control unit 30 through a wired / wireless internet network. Decoded and displayed, and selects any sub-institution to encrypt the video signal and then transmit the image through the wired / wireless Internet network main control unit 30, the main control unit 30 and the image connected to the wired and wireless Internet The smart device 40 to transmit the encrypted to the main control unit 30 that is automatically connected to the transmission, the receiving target of the encrypted video signal arbitrarily selected and transmitted by the main control unit 30, and receives the video signal Over a program that comprises a video receiving display section 50 for displaying the decoded video signal.

The closed circuit photographing apparatus 10 may include a camera 11 for capturing an image, an encoder 12 for encrypting an image signal photographed by the camera 11, and a video signal encrypted by the encoder 12. It consists of a wireless transceiver 13 for wireless communication transmitting through.

The singular camera 11 has a CCTV camera installed in a fixed place, a network camera connected to a network for remote control, a vehicle camera mounted on a vehicle to take an external image, and a wireless transmission function for taking a video while being carried by a user. Smart camera or smartphone.

The camera 11 may transmit an image or a picture or a sound to be photographed to the encryptor 12 to encrypt the photographed image. The camera 11 may encrypt the photographed image through the encoder 12 in real time. Through the mobile communication network 20 or WiFi to transmit to the wireless Internet network.

The camera 11, the encryptor 12, and the wireless transceiver 13 may be modularly configured as a detachable or integrated type.

The image capturing unit including the closed circuit photographing apparatus and the smart device of the present invention functions as an automatic connection function when the power is turned on. The automatic connection function automatically blocks the registered devices from occupying one communication line and blocks the connection of other devices.

When the encrypted video signal is transmitted to the mobile communication network 20, the image captured by the closed circuit photographing device 10 automatically connected to the main control unit 30 is encrypted through the encryptor and then transferred to the main control unit 30. Since one-way real-time transmission, it is possible to prevent the leakage of the video by not allowing access to the video reception display unit 50 or an external server that is not allowed access, by using only one line of the mobile communication network 20 By transmitting, the image quality and transmission rate of the real-time shot image are not degraded, and the line use cost of the wireless communication is reduced.

The camera 11 automatically connects to the main control unit 30 through the mobile communication network 20 when the power is turned on, and encrypts and transmits a video signal photographed in real time. By blocking the connection, it is possible to prevent the leakage of the video signal.

The encryptor 12 or encryption server 34 according to the present invention uses a region of interest encryption technique rather than a full video encryption scheme. For privacy and bloody brutal scenes, the aversive part is extracted by face recognition or color recognition and masks only the area. In the case where a specific event occurs and an individual identification is required, the image receiving side preferably performs image encryption by using a method that enables an authorized person to decrypt and check the image.

The mobile communication network 20 transmits a video signal photographed and transmitted by the closed circuit photographing apparatus 10 to the main controller 30, and performs 3G, LTE, broadband LTE, LTE-A, broadband LTE-A, or band LTE. The technology can be used to transmit at 75 Mbps to 300 Mbps. The mobile communication network 20 is not limited to the above technologies, and additional technologies may be used in the future. The smart device 40 may also be directly connected to the main control unit 30 through a mobile communication network or using a wired / wireless internet network such as WiFi.

The main control unit 30 for receiving and controlling the video signal transmitted from the mobile communication network 20 includes a decryption server 31 for decoding the encrypted video signal, a shared control server 32 for displaying the decrypted video signal, The control server 33, the decryption server 31, or the control server 33, which selects an image reception display unit 50 sharing the decrypted video signal with the lower authority, encrypts the encrypted video signal through the encryption server 34, and then transmits the encrypted video signal. It consists of an encryption server 34 for encrypting the video signal to be transmitted to the video receiving display unit (50).

The decryption server 31 receives an encrypted video signal transmitted from a mobile communication network 20 through a mobile communication network or a wired / wireless internet network, and decodes the encrypted video signal to share the control server 32 and the control server 33. And the encryption server 34.

The shared control server 32 receiving the video signal decoded by the decoding server 31 can control the divided display area on the large display.

The control server 33 receiving the decoded video signal from the decryption server 31 selects the video receiving display unit 50 of the lower authority to transmit the video signal, so that the video signal is encrypted by the encryption server 34. To be transmitted.

In this case, the control server 33 selects the image receiving display unit 50 requesting the image signal or the image receiving display unit 50 determined to be shared with the lower authority to transmit the image signal.

The main controller 30 transmits an image to a shared server such as a mobile terminal or a PC of the lower engine which is the image receiving display unit 50 and simultaneously performs bidirectional communication by text or voice, thereby instructing the main controller from the lower controller. It can be transmitted in both directions, such as a request to the main control unit 30 from the matter or the lower body.

The main controller may control the PTZ of the closed circuit photographing apparatus 10. The PTZ control is to control the pan, tilt, and zoom to control the movement of the camera 11 in the closed circuit imager 10.

In addition, when the main controller 30 inputs information by text or voice, the main controller 30 may convert the voice or text to a lower organ and transmit the information.

The smart device 40 which transmits the video signal to the decryption server 31 of the main controller 30 is a mobile device such as a smart phone, a smart camera, and a smart pad. It consists of devices that can be encrypted and transmitted.

The smart device 40 automatically connects to the main control unit 30 through an automatic access program, encrypts the image taken by an encryption program, and then, via the mobile communication network or the wired / wireless internet network, the smart controller 40 of the main control unit 30. The decryption server 31 occupies and transmits one line.

Since the encrypted image transmitted from the smart device 40 is transmitted to the main controller only in one direction through the occupied line, the external connection is blocked so that the image captured by the smart device 40 does not leak to the outside.

The image receiving display unit 50 selected by the control server 33 of the main control unit 30 is composed of a smartphone, a smart tab or a mobile terminal or a sharing server, a client PC of a police station, a lower body, and a PC of a public office. .

The image receiving display unit 50 decodes an image signal transmitted to a built-in decoding program and displays it on the screen.

Protocols for encrypting video signals in the encryption circuit 12 of the closed circuit camera 10, the encryption program of the smart device 40 and the encryption server 34 of the main controller 30 are SSL, AES, DES and RSA. Any one can be selected and used, and two or more types can also be mixed and used.

The SSL (Secure Socket Layer) is designed to allow secure transactions of information security delivered over the Internet, and has encryption and authentication functions. Therefore, the SSL (Secure Socket Layer) can be used not only for the World Wide Web Browser (WWW) but also for various Internet services such as Telnet and FTP. Apply.

SSL has other TCP / IP Apple authentication encryption features, such as File Transfer Protocol (FTP), as well as Web products, and authentication is a feature that verifies the identity of each other between a web browser and a web server.

The application environment specification (AES) is a general term for an interface specification for an application program defined by an open system foundation (OSF), and includes a system call of OSF / 4F and a graphical user interface (GUI) of OSF / Motif. Applications made in compliance with the OS will also run on other OSF systems.

The Data Encryption Standard (DES) is a type of block cipher, and is a cipher set by the National Bureau of Standards (NIST) as a national standard. DES is a symmetric key cryptography and uses 56-bit keys.

The RSA (Rivest Shamir Adleman) uses two large prime numbers (typically more than 140 digits), and through the multiplication and addition of these numbers, one forms a public key and the other forms a private key. This involves deriving two sets of numbers. The public and private keys can encrypt and decrypt information used on the Internet. The principle of operation is a very complex equation.

The RSA is applied to almost all fields as a pronoun of public key cryptography because it takes more than 10,000 years even as a supercomputer to decrypt the private key. However, a large amount of calculation is a disadvantage. Depending on the number of bits, a Pentium-class computer needs to wait for as little as 20 seconds or as long as a few minutes to create a public key and a private key. However, to solve this problem, an elliptic curve algorithm has recently emerged.

In the present invention, one or two or more of the above encryption protocols are used in combination.

The closed-circuit camera 10 and the smart device 40 are automatically connected to the main control unit 30 through the mobile communication network using the integrated control system according to the present invention. .

First, step S110 of comparing and checking a program version is performed.

When the closed circuit camera 10 and the smart device 40 are turned on, the closed circuit camera 10 requests a connection to the main controller 30 through the mobile communication network 20, and the smart device 40 connects to the wired / wireless device. The connection request to the main control unit 30 through the Internet network.

Then, the main controller 30 compares and checks whether the program version provided by the main controller 30 matches the version of the connected program embedded in the closed circuit photographing apparatus 10 and the smart device 40.

The program of the main control unit 30 and the connection program of the closed circuit camera 10 and the smart device 40 are the same programs as necessary when transmitting the images captured by the closed circuit camera 10 and the smart device 40. Only after acknowledgment is confirmed can an image be sent and received.

If the version of the program of the main controller 30 and the version of the connection program of the closed circuit camera 10 and the smart device 40 is the same, the next step is made, if the version of the program is different provided by the main controller 30 The version of the program is transmitted to the closed circuit camera 10 and the smart device 40 so that the access program is applied.

The second step is to check the login information which is the user information and log in (S120).

The closed-circuit camera 10 and the smart request to log in to the main controller 30 through the login information stored in the closed circuit camera 10 and the smart device 40, the smart controller 40 and smart The login information, which is the user information of the device 40, is checked and logged in.

When the closed-circuit camera 10 and the smart device 40 log in to the main control unit 30 through the logging in step S120, the step S130 of adjusting a setting is performed.

In the adjusting of the setting (S130), the resolution, bitrate, and environment control table (ECT) information is transmitted from the closed circuit camera 10 and the smart device 40 to the main controller 30. When confirmed by the main control unit 30, the main control unit 30 adjusts the settings according to the resolution, bitrate and environment setting information confirmed by the main control unit 30.

When the setting adjustment is completed through the step of adjusting the setting (S130), the main control unit 30 encrypts and transmits the image signals photographed by the closed circuit photographing apparatus 10 and the smart device 40, and then the main control unit. 30 to terminate the transmission of the video signal through the step (S140) of the transmission of the video signal to stop or log out of the transmission of the encrypted video signal in the closed circuit camera 10 or the smart device 40. do.

The method of sharing the image captured by the closed circuit photographing device 10 and the smart device 40 by transmitting the image to the main control unit 30 and the image receiving display unit 50 is as follows.

In the first step of transmitting in real time (S210), the video signal encrypted by the closed circuit photographing device 10 and the smart device 40 and encrypted by the encoder 12 to the main controller 30 through the mobile communication network. Send in real time.

When the closed circuit camera 10 and the smart device 40 transmit an image to the main controller 30 in real time, the closed circuit camera 10 and the smart are directly connected to another image receiving display unit 50 or an external server. Since only one connection line is used since the connection to the device 40 is not performed, the degradation of the image quality or the transmission speed does not occur, and the image signal is encrypted so that it does not leak out.

In operation S220, the video signal transmitted to the main controller 30 is displayed on the shared control server 32 to control the video signal transmitted through the decoding server 31. .

In addition, the video signal decrypted by the decryption server 31 is selected by the control server 33 to transmit the video signal from the video receiving display unit 50 of the lower authority to encrypt the video signal encrypted through the encryption server 34 It is transmitted to the image receiving display unit 50 of the lower organization through the wireless Internet network.

In the decoding and displaying (S230), the encrypted video signal received in the video receiving display unit 50 is decrypted through a built-in decoding program, and the decoded video signal is displayed on the screen through the display of the video receiving display unit 50. Will be displayed.

The present invention encrypts an image taken by a closed circuit camera or a smart device with an encryptor and then transmits it to the main control unit through a mobile communication network, encrypts the video signal transmitted from the main control unit, and then a mobile communication network or a wired / wireless internet network. The video signal is transmitted to the video receiving display unit, so the security of the video signal is enhanced, and the video signal transmitted from the closed-circuit camera and the smart device is transmitted to the main control unit which is automatically connected to the one-way, so that the external connection is blocked and the video is leaked. This has the advantage of being prevented.

In addition, since the closed circuit camera and the smart device do not directly connect to the image receiving display unit, the wireless communication connection line is reduced, so that the closed circuit camera and the smart device do not become overloaded so that high quality images can be secured. There is an advantage that the connection cost of the mobile communication connection line is reduced.

The integrated image control system as described above is not limited to the configuration and operation of the embodiments described above. The above embodiments may be configured such that various modifications may be made by selectively combining all or part of the embodiments.

The present invention can be used in an environment in which the shooting by the camera installed in the road or alley, etc. to track the criminals or to track the target of protection.

It can also be used in environments where intruders or guards must be tracked inside and outside the building.

Claims

In the video integrated control system of the National Police Agency,

A closed circuit imager for photographing an object in a fixed place or a mounted vehicle;

A smart device that photographs an object while moving and transmits an encrypted video signal through a built-in program to a main controller through a mobile communication network in one direction;

An encoder for encrypting an image photographed by the closed circuit photographing apparatus;

A wireless transceiver which transmits the encrypted image one-way wirelessly and receives a command from the main controller;

Decryption server for receiving and decrypting the encrypted video signal transmitted from the wireless transceiver through the mobile communication network and

Including a main control unit for displaying the decoded image on the large display of the shared control server, and transmits the selected image to the mobile terminal or shared server of the lower authority,

When the smart device and the closed circuit camera are turned on, the shared control server or the main control unit is automatically logged in.

Check and compare the program version of the smart device and the closed circuit camera with the version of the program provided by the main control unit,

The smart device and the closed-circuit camera are automatically logged in to the shared control server or the main control unit to occupy one line so that the image is transmitted only in one direction and the external connection is blocked.

The main control unit is a two-way communication by text or voice while transmitting an image to a mobile terminal or a shared server of the lower engine which is an image receiving display unit,

The main control unit is a video integrated control system, characterized in that for converting the voice to the lower organ when the information is input to the text.
The method of claim 1,

The main control unit is a video integrated control system, characterized in that for controlling the PTZ to the closed circuit camera.
The method of claim 1,

And the encryptor uses one or a combination of SSL, AES, DES, and RSA encryption methods.
The method of claim 1,

And the encryptor uses a region of interest encryption technique.
The method of transmitting a video signal using the video integrated control system of any one of claims 1 to 4,

Comparing and checking a program version of the closed circuit camera and a smart device with a version of a program provided by the main controller;

The closure requesting the login to the main control unit through the login information stored in the closed circuit camera and the smart device through which the program version is checked through comparing and checking the program version, and the login requesting login from the main control unit. Verifying and logging in to login information which is user information of the circuit camera and the smart device;

The resolution, bitrate, and environment control table (ECT) information is transmitted from the closed circuit camera and the smart device logged into the main controller to the main controller to check and confirm the information. Adjusting the setting in the main controller according to the resolution, bitrate, and configuration information;

When the image signal captured by the closed circuit camera and the smart device that has been set is encrypted and transmitted to the main controller, the transmission of the encrypted video signal by the main controller or the closed circuit camera or the smart device is stopped or logged out. The video transmission method using the integrated video control system comprising the step of ending the transmission of the video signal.