KR20010100434A - Image Monitoring Security System And Image Transmission Function Thereof - Google Patents

Abstract

The present invention relates to a security system, and detects the image of the moving object in the monitoring area to notify the owner or police station of the intrusion of the external intruder, capture and store the image of the intrusion site of the external intruder and at the same time to transmit to the owner or police station The present invention relates to a video surveillance security system and a method for securing the evidence.

The present invention detects the presence of an intruder from a video input means for capturing and transmitting an image of the surveillance area and the difference image by comparing the current image of the image input means with a previous background image, and if the intruder is detected, The control means for capturing the image and then notifying the user, the overall algorithm for the operation of the video surveillance security system, the means for storing the background image and the captured intruder's image, and the user set according to the signal applied from the control means. Communication processing means for connecting a communication network, and transmission means for notifying intruder information of the surveillance area through the connected communication network.

In addition, the present invention, if there is no motion in the image of the surveillance area to store it as a background image, and as time passes by comparing the frame-by-frame image input from the surveillance region with the stored background image to determine whether the motion is detected Process and, if motion is detected in the compared image, captures and stores the moving object, sends the captured image to e-mail to the address set by the user, and simultaneously detects an intruder by voice, alarm, and other messages. And a process of notifying.

Therefore, if an intruder is detected in the surveillance area, i.e., at the point of time, the user sets a notice of the intruder's presence by a telephone set by the user, and at the same time, the intruder's image is e-mailed at a set time interval. It provides stability and reliability for unattended video surveillance by ensuring that the transmission provides evidence of intruders' faces and offenses.

Description

Image Monitoring Security System And Image Transmission Function Thereof}

The present invention relates to a security system, and more particularly, detects an image of a moving object in a surveillance area, notifies the owner or police station of the intruder's intrusion, and captures and stores the intrusion site image of the external intruder. The present invention relates to a video surveillance security system and a method for transmitting the same to a police station and securing the evidence.

In general, video surveillance and security systems are widely used for banks or automated corners of banks, outside surveillance of public facilities, inside and outside monitoring of buildings, underground parking garages of buildings, theft prevention of offices and business stores, and theft prevention in homes. It adopts a closed circuit, and at least one video surveillance device, which is installed in the surveillance area, is input to the camera by using various video compression techniques. The way to save it is applied.

Such a surveillance and security system is a management system that can be used only as an after evidence to judge the culprit from the images stored in the storage medium after a long time has passed since the intrusion event was terminated. When an invasion occurs, a security jurisdiction such as the owner or police station that has installed the corresponding video surveillance and security system can not recognize the intrusion of the external intruder, and there is a problem that can not respond quickly.

In addition, a security system such as Home Care, which is provided by a private security company as a paid service, has a pre-alarm function that notifies the private security company or the police station about the intrusion of an external intruder. However, since there is no function to obtain evidence such as the picture of the intruder, the intruder must be arrested before the crime is over. However, the security officer or the police officer may be in danger due to the fact that the security officer or the police station of the private security company is located remotely. It takes time to move to the location, so there is a problem that the intruder cannot be arrested.

As described above, the existing video surveillance and security system does not have a function of transmitting the intruder's video to the security company, the police station and the owner in real time, but is used as a material after the intruder's crime. In addition, when notifying the fact of the intruder to the security company or the police station and the owner, this only has a problem that does not transmit the image of the intruder only to notify whether the intruder.

The present invention takes into account the general problems of the existing video surveillance and security system as described above, and its object is to move objects using difference images when there is an intruder in a home, office or unattended surveillance area where there is no owner. The presence of the intruder is monitored by determining the presence of the intruder, and if the presence of the intruder is recognized, the owner is notified by the landline or mobile phone at that point so that the owner can take appropriate measures. By storing the video of the crime scene as a file and transmitting the image of the crime scene to the e-mail address set by the owner, it was secured as evidence of the crime.

1 is a schematic configuration diagram of a video surveillance security system according to the present invention.

2 is an exemplary diagram of a background image photographed in a space where a video surveillance security system according to the present invention is installed.

Figure 3 is an exemplary view capturing the image of the intruder in a space in which the video surveillance security system according to the present invention is installed.

4 is an exemplary diagram of a difference image between an intruder captured image and a background image processed in the video surveillance security system according to the present invention.

5 is a flowchart illustrating an intruder image processing procedure in a video surveillance security system according to the present invention.

6 is a flowchart of a procedure for performing an intruder occurrence notification in a video surveillance security system according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: video input unit 20: processor

30 memory unit 40 communication processing unit

40: message transmitter 50: video transmitter

The present invention for achieving the above object in the security system, the image input means for taking and transmitting the image of the surveillance area, and the difference image through comparison between the current image of the image input means and the previous background image Control means for detecting the presence of an intruder from the user, and capturing the relevant image when the intruder is detected, and notifying the user, an overall algorithm for operating the video surveillance security system, and a means for storing the background image and the captured intruder image. And communication processing means for connecting a communication network set by the user according to a signal applied from the control means, and transmission means for notifying intruder information of the surveillance area through the connected communication network.

In addition, the present invention, if there is no motion in the image of the surveillance area to store it as a background image, and as time passes by comparing the frame-by-frame image input from the surveillance region with the stored background image to determine whether the motion is detected Process and, if motion is detected in the compared image, captures and stores the moving object, sends the captured image to e-mail to the address set by the user, and simultaneously detects an intruder by voice, alarm, and other messages. And a process of notifying.

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

As can be seen in FIG. 1, the video surveillance security system according to the present invention includes an image input unit 10, a processor 20, a memory unit 30, a communication processing unit 40, a message transmission unit 50, and an image transmission unit. It consists of a unit 60, the image input unit 10 is a camera installed at least one or more at a predetermined angle at a predetermined position of the surveillance area is responsible for processing and transmitting the image of the surveillance region in a predetermined state. .

The processor 20 processes the image of the surveillance region input from the image input unit 10, which is a camera, stores the image in the memory unit 30, and analyzes the difference image between the image stored in the memory unit 30 and the currently input image. Determine whether there is a motion image, and if it is determined that there is a motion image, capture and store the video in the memory unit 30 and simultaneously transmit an e-mail to the owner of the surveillance area, the police station, and a security company. It is responsible for sending a message to the owner of the surveillance area, the police station, and the security company by voice, alarm, or other means.

The memory unit 30 is in charge of the overall algorithm for the operation of the video surveillance security system and the function of storing the image input from the image input unit 10 and the captured intruder image.

The communication processor 40 detects a movement in the surveillance area and, if an intruder is present, transmits an image of the intruder and transmits an intruder notification or alarm message to the owner or the police station and the security company according to a control signal authorized by the processor 20. Control network access.

The message transmitter 50 is responsible for transmitting a voice and other types of messages through a wired or wireless connection when notifying the owner, the police station and the security company in accordance with the detection of the intruder in the surveillance area.

The image transmitter 60 is responsible for transmitting the captured image of the intruder to the owner or the police station and the security company by e-mail according to the detection of the intruder in the surveillance area.

Referring to the operation of performing the video surveillance and email transmission in the present invention having the function as described above are as follows.

When the power is supplied to the video surveillance security system according to the present invention and the monitoring operation is performed, the image is composed of at least one camera which is installed to maintain a predetermined angle at a predetermined position of the detection area or rotate at a predetermined angle or 360 °. The input unit 10 inputs an image of the corresponding surveillance area, processes the image in a predetermined state, and applies the image to the processor 20 (S101).

The processor 20 captures an input image for each frame and stores the processed image result in a designated area of the memory unit 30 (S102) (S103).

At this time, the processor 20 stores the current image as a background image in the memory unit 30 only in a state where motion is not detected as shown in FIG. If it is determined that the motion is not detected in the surveillance region, the background image is updated to the current image at a predetermined time, preferably 30 seconds, and stored in the designated area of the memory unit 30.

In the state in which the background image with no motion is stored in the surveillance area as described above, the processor 20 performs a difference image between the current image captured by the image input unit 10 for each frame and the background image stored in the memory unit 30. If it is determined that there is no change in the image, it is determined that no motion is detected in the surveillance area, and if it is determined that there is a change in the image in the difference image between the current image and the background image, it is determined that there is an intruder in the surveillance area. .

As a method of detecting a motion from the difference image between the current image and the background image, first, a background image having no motion is stored in advance, and then the contrast value of the current frame-by-frame image and the background image input from the image input unit 10 are first stored. The contrast value is compared to count the number of pixels whose difference in contrast value is greater than the set threshold value, and when the number is greater than or equal to a certain ratio of the entire image, it is determined that there is a moving object or a person in the corresponding area to be monitored (S104).

If the algorithm for this is expressed as an equation, it is expressed as Equation 1 below.

Where 1 ≦ i ≦ 640 or 1 ≦ i ≦ 480.

Count = : Sum of pixels when the contrast value of the difference image is larger than the threshold value (T).

If Count> R, it is determined that there is motion, otherwise it is determined that there is no motion.

In Equation 1 above Is the difference image, Is the background image, Is the current image, X is the maximum coordinate value on the horizontal axis of the image, Y is the maximum coordinate value on the vertical axis of the image, T is the threshold value for the difference image, and R is a certain ratio that is a standard for determining the motion among all images. do.

If a motion in the surveillance region is not detected by the algorithm through Equation 1, the processor 20 returns to S101 to repeatedly update the image input and the background image of the surveillance region, and attach it in the corresponding surveillance region. When the motion is detected as shown in FIG. 3, the processor 20 captures an image of the motion as shown in FIG. 4 (S105) and stores the captured video in the memory unit 30, while simultaneously moving the motion to the surveillance area, that is, the intruder. It is determined that the presence of the owner or security company or police station to control the communication processing unit 40 to notify the fact of the intruder (S106).

At this time, the communication processing unit 40 notifies the owner or the security company or the police station by using a wired or wireless communication network that the intruder in the surveillance area through the message transmission unit 50 through voice, alarm and other messages, and the video The transmission unit 60 processes the image of the intruder in a predetermined state and transmits the image to the owner or the security company or the police station through electronic mail (S107).

In the above method of transmitting an intruder's message to the owner, the security company, or the police station, the message forwarding processor recognizes the widow handle of the message transmission process and sends a specific signal to the corresponding handle using the SendMessage () function. To be done automatically.

Message transfer between processes signals the message transmission process at set time intervals, preferably once every 3 minutes, as the video continues, resulting in continued video and intrusion of the intruder's actions at the owner, security company or police station. To monitor.

The rough processing procedure is performed through the following algorithm.

// communication processing unit

Target window handle = NULL

if (detection == TURE)

{

// Captain window handle with caption "AutoMsg"

Target window handle = FindWindow ("AutoMsg")

// if we find the window handle

if (target window handle! = NULL)

{

// Pass window handle and specific character with SendMessage

// if you send more than 128 value of ASCII code

// Specific character value becomes negative value.

SendMessage (target window handle, WM_CHAR, 200,0);

}

}

// message receiver

if (message! = "")

{

// If negative value is passed to specific character

if (KEY value <0)

{

Attempt to contact the message transfer process

// if the connection is successful

if (connection status == TURE)

{

Start Login procedure

}

}

A motion detected in the surveillance region through the same algorithm, that is, an image of an intruder and an operation of notifying the same, will be described below with reference to FIG. 6.

When a control signal for requesting message transmission from the processor 20 is detected by the communication processing unit 40, the communication processing unit 40 is in a connected state, that is, a type of communication medium previously set by the user, that is, a wired / wireless telephone network, a dedicated line, or a user. It is determined whether the communication medium for intruder notification is a dedicated line factor telephone line / wireless network by reading a file in which the mobile phone number and the information provider's IP address set up are stored (S201).

If it is determined that the communication medium is a dedicated wire network, it attempts to log in and then logs in (S202) (203). When logged in, it performs a macro and processes the captured image by e-mail to the address designated by the user according to the environment of the dedicated wire and transmits it. (S204) (S205).

In addition, if the communication medium is set to a telephone line or a wireless network in the above state, it performs a macro by automatically dialing and then notifies a telephone line or a modem that there is an intruder in the surveillance area (S301-S303).

For example, in the message transmission method, the user transmits data using Cheonian, which is a PC communication service provider, and finds the strings "User ID" and "Password" after the initial connection. If the password is entered automatically, the login is successful, and if the login is successful, the step of sending a short message to the mobile phone is processed according to the order previously stored in the macro buffer.

In addition, the algorithm for the message transmission method using a dedicated line is set as follows.

Current Status = SEND_User ID // Set the current status to user ID.

{

// if the current status is the same as the user ID

if (current state == SEND_user id)

{

Result = find string (transferstring, "user_id:")

if (result == TURE)

{

Send (user ID)

Current Status = SEND_Password

}

}

if (current state = SEND_password)

{

Result = find string (transferstring, "password:")

if (Find == TURE)

{

SEND (password)

Login Success == TURE

}

}

} while (repeat until login is successful)

Macro transfer

do

{

// find the matching string in the incoming string

Result = find string (receive string, corresponding string)

// if a string is found

if (result == TURE)

{

Send corresponding string

Perform the next string in the macro buffer

}

} while (until you run through the strings in the macro buffer)

In addition, in case of transmitting the image captured from the surveillance region through the image transmitter 60, the processor 20 checks the current time and the state of the server, and then sets the electronic value set by the user when the state of the server is operating normally. The message is sent at the same time as the image file captured by the mail address. The algorithm is as follows.

Server status = FALSE

do

{

Elapsed time = current time ()

Server Status = Server Status Check ()

}

while (waiting time> elapsed time ∥server status == FALSE)

if (server status == TURE)

{

if (Snap image check () == TURE)

{

EmailAddress = read setting ()

Document = Create Email Document (html Format)

Email transmission (EmailAddress, document)

}

}

As described above, the present invention can take appropriate measures against the intruder by notifying the presence of the intruder by the telephone set by the user at the time when the movement, that is, the intruder is detected in the surveillance area, and at the same time by the e-mail By transmitting video at set time intervals, it provides stability and reliability for unattended video surveillance by securing evidence of intruders' faces and offenses.

Claims (8)

In a security system, Image input means for photographing and transmitting an image of the surveillance region; Control means for detecting the presence of an intruder from a difference image by comparing the current image of the image input means with a previous background image, and capturing the corresponding image when the intruder is detected and notifying the user; Means for storing an overall algorithm and background image of the operation of the video surveillance security system and the captured intruder image; Communication processing means for connecting a communication network set by the user according to a signal applied from the control means; And a transmission means for notifying intruder information of the surveillance area through the connected communication network. The method according to claim 1, And the control means detects an intruder by analyzing the movement in the surveillance region. The method according to claim 1, The transmitting means includes message transmitting means for notifying the surveillance area of the occurrence of the intruder by voice, alarm, or other means; And a video transmission means for notifying an intruder's video by e-mail. If there is no motion in the surveillance area image, storing it as a background image; Determining whether motion is detected by comparing the frame-by-frame image input from the surveillance region with the stored background image over time; When motion is detected in the compared image, the process of capturing and storing the moving object, transmitting the captured image to an e-mail address set by the user, and notifying the intruder by voice, alarm, and other messages. Video surveillance security method comprising a. The method according to claim 4, And a background image is updated with the current image when a motion is not detected within a predetermined time set in the frame-by-frame image. The method according to claim 4, Motion detection in the surveillance area is characterized in that it is determined that there is an intruder when the contrast value of the difference image compared with the current frame-by-frame image and the background image is detected as a pixel of a predetermined ratio or more. The method according to claim 4, Video surveillance security method, characterized in that the detection of the motion of the surveillance region through the following equation (2). Where 1 ≦ i ≦ 640 or 1 ≦ i ≦ 480. Count = : Sum of pixels when the contrast value of the difference image is larger than the threshold value (T). here, Is the difference image, Is the background image, Is the current image, X is the maximum coordinate value on the horizontal axis of the image, Y is the maximum coordinate value on the vertical axis of the image, T is the threshold value for the difference image, and R is a certain ratio that is a standard for determining the motion among all images. do. The method according to claim 4, The detection notification of the intruder is a video surveillance security method, characterized in that using a private network, a public network or a wireless communication network.