KR20070038656A - Method for controlling cooperation monitoring in digital video recorder - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooperative surveillance control method in a digital video recorder. For example, a digital video recorder (DVR) connected to a plurality of surveillance cameras and sensors provided with a pan / tilt / zoom (PTZ) function is connected. When the cooperative monitoring mode is set, whether or not an event occurs in a plurality of different monitoring areas is determined, and when the event occurrence monitoring area and the non-occurring monitoring area exist at the same time, the capturing of the monitoring areas is performed. By controlling pan / tilt / zoom operations for a plurality of surveillance cameras, cooperatively monitoring the event occurrence monitoring region, and subsequently performing the cooperative monitoring operation, when a new event is generated in the event non-occurring monitoring region. By controlling the pan / tilt / zoom operations for the plurality of surveillance cameras, the respective surveillance zones are photographed in an initial setting state, and thus the event is not triggered. It is a very useful invention that it is possible to monitor and capture an event generation surveillance region more efficiently by using a surveillance camera of a live region further.

Digital Video Recorders, Surveillance Cameras, Pan / Til / Zoom, Events, Motion Detection, Sensors, Cooperative Surveillance

Description

{Method for controlling cooperation monitoring in digital video recorder}

1 illustrates a state in which a pan / tilt equipped with a general surveillance camera and a digital video recorder are connected and connected.

2 and 3 illustrate an embodiment in which a plurality of general surveillance cameras photograph different surveillance regions, respectively.

4 is a flowchart illustrating an operation of a cooperative monitoring control method in a digital video recorder according to the present invention;

FIG. 5 illustrates an embodiment in which a plurality of surveillance cameras are photographed by splitting the same surveillance region according to the present invention.

6 illustrates an embodiment in which a plurality of surveillance cameras respectively photograph different surveillance regions according to the present invention.

※ Explanation of code for main part of drawing

100: PTZ camera 200: Pan / Tilt

300: digital video recorder

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooperative surveillance control method in a digital video recorder. For example, a digital video recorder (DVR) connected to a plurality of surveillance cameras and sensors provided with a pan / tilt / zoom (PTZ) function is connected. When the cooperative monitoring mode is set, the present invention relates to a cooperative monitoring control method in a digital video recorder for more efficient cooperative monitoring of an event generation monitoring area by using a camera for monitoring a non-event occurrence area.

Generally, a PTZ surveillance camera equipped with a pan / tilt / zoom function is mounted on a pan & tilter fixedly installed on a ceiling of a specific place, for example, as shown in FIG. 1. The PTZ surveillance camera 100 is monitored by a panning operation rotated 360 degrees in the horizontal direction by the pan / tilt 200 and a tilting operation rotated 180 degrees in the vertical direction. You can change the area in the other direction.

In addition, in the PTZ surveillance camera, the zoom lens may be variably adjusted in a tele or wide direction to enlarge or photograph a subject, and to capture the captured video image. As shown in FIG. 1, the digital video recorder 300 is located at a remote place.

Meanwhile, the digital video recorder 300 outputs and displays the video image photographed by the PTZ surveillance camera through a monitor screen and records and stores the recording on a hard disk (HDD) included in the device. For example, as shown in FIG. 2, the first camera Cam1 is installed on the ceiling of the first monitoring area Area1, and the door Door1 is configured to detect entry and exit of a third party. The first sensor Sensor1 may be installed.

In addition, a second camera Cam2 may be installed on the ceiling of the second monitoring area Area2, and a second sensor Sensor2 for detecting a third party's entrance and exit may be installed in the door Door2. The first camera Cam1 captures a first surveillance region and outputs a surveillance image. The second camera Cam2 captures a second surveillance region and outputs a surveillance image. The video recorder 300 receives the first video frame and the second video frame, respectively, and performs recording operation for each channel corresponding to each camera.

On the other hand, in the digital video recorder 300, as shown in Figure 3, when the event by the motion detection (Motion Detect) or sensor detection (Sensor Detect) does not occur in the first surveillance region, from the first camera If an event by motion detection or sensor detection occurs in the second surveillance region without recording the received surveillance image, only the surveillance image received from the second camera is selectively recorded.

However, since a general digital video recorder performs only a simple operation of selectively recording a surveillance video according to whether or not an event occurs as described above, for example, as illustrated in FIG. 3, the first camera does not generate an event. Since the first surveillance region, which is an area, continues to be photographed insignificantly, the second camera captures a second surveillance region, which is an event occurrence region, at a wide angle initially set, thereby intensively monitoring the second surveillance region. There is a problem that can not be achieved.

Therefore, the present invention was created to solve the above problems, for example, to a digital video recorder (DVR) connected to a plurality of surveillance cameras and sensors provided with a pan / tilt / zoom (PTZ) function. When the cooperative monitoring mode is set, whether or not an event occurs in each monitoring area is determined, and when the result of the determination indicates that the event generating monitoring area and the non-occurring monitoring area exist simultaneously, To provide a cooperative surveillance control method in a digital video recorder for controlling the pan / tilt / zoom (PTZ) operation of a surveillance camera so that the surveillance event can be cooperatively monitored more efficiently. Is there.

In the digital video recorder control method according to the present invention for achieving the above object, when the cooperative monitoring mode is set in the digital video recorder connected to the plurality of monitoring cameras and sensors, a plurality of different Determining whether an event occurs in the surveillance area; And a step of controlling the plurality of surveillance cameras for capturing the surveillance regions and cooperatively monitoring the event occurrence surveillance region if the event occurrence surveillance region and the non-occurrence surveillance region exist at the same time. Characterized in that,

Further, during the cooperative monitoring operation, when a new event occurs in the event-free monitoring area, controlling the plurality of monitoring cameras to photograph each original monitoring area in an initial setting state. It is characterized by comprising.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the cooperative monitoring control method in the digital video recorder according to the present invention will be described in detail.

4 is a flowchart illustrating an operation of a cooperative monitoring control method in the digital video recorder according to the present invention. For example, as described above with reference to FIG. The first camera Cam1 and the first sensor Sensor1 are installed in the door Door1, and the second camera Cam2 and the second sensor are installed in the ceiling and the door Door2 of the second monitoring area Area2. In the case where the sensor 2) is installed and the cameras and the sensors are connected to the digital video recorder (DVR) and set to the cooperative monitoring mode according to the user's request (S10), The digital video recorder (DVR) checks whether or not an event has occurred for each surveillance region (S11).

For example, in the digital video recorder (DVR), when motion detection occurs on surveillance images captured by the cameras, or when a detection signal indicating a third party's entrance and reception is received by the sensors, the corresponding monitoring is performed. It is determined that an event has occurred in the area.

On the other hand, as a result of the determination, when no event occurs in the first surveillance region (S12) and at the same time an event occurs in the second surveillance region (S13), the digital video recorder (DVR), as shown in FIG. Likewise, the pan / tilt / zoom (PTZ) operation of the first camera Cam1 is controlled to allow the first camera Cam1 to divide and capture a portion of the second surveillance region where the event occurs.

Also, by controlling the pan / tilt / zoom (PTZ) operation of the second camera Cam2, the second camera Cam2 may divide the remaining part of the second surveillance region where the event occurs and take a concentrated shot. Thus, as illustrated in FIG. 5, the first camera and the second camera cooperate with each other to more intensively divide and record the second surveillance region where the event occurs (S14).

On the contrary, when the event is generated in the first surveillance region and the event does not occur in the second surveillance region at the same time (S15), the digital video recorder (DVR) can detect the second camera (Cam2). By controlling the pan / tilt / zoom (PTZ) operation, the second camera Cam2 divides a part of the second surveillance region in which the event occurs and concentrates on photographing.

In addition, by controlling the pan / tilt / zoom (PTZ) operation of the first camera Cam1, the first camera Cam1 may divide the remaining part of the first surveillance region in which the event occurs and take a concentrated shot. As a result, the first camera and the second camera cooperate with each other to more intensively capture and record the first surveillance region in which the event occurs (S16).

When a new event occurs in the event-free event monitoring area while performing the series of cooperative monitoring operations as described above, for example, during the cooperative monitoring of the first monitoring area, the second monitoring area is provided. When the third sensor detects entry and exit by the second sensor, after determining that the event occurs in the second surveillance area (S17), the first camera and the second camera are controlled to their original initial setting state.

In addition, when entering and exiting a third person by the first sensor installed in the first monitoring area while cooperatively monitoring the second monitoring area, after determining that an event has occurred in the first monitoring area (S18), the first camera is detected. The second camera is controlled to the original initial setting state (S19).

Accordingly, as shown in FIG. 6, since the first camera captures the first surveillance region, and the second camera captures the second surveillance region in an initially set state, the event occurrence surveillance region is not generated. By additionally using the surveillance camera of the area, it is possible to intensively divide shooting.

As mentioned above, preferred embodiments of the present invention described above are disclosed for the purpose of illustration, and those skilled in the art can improve other various embodiments within the spirit and technical scope of the present invention disclosed in the appended claims below. Changes, substitutions or additions will be possible.

In the cooperative surveillance control method of the digital video recorder according to the present invention as described above, for example, a digital video recorder (DVR) in which a plurality of surveillance cameras and sensors provided with a pan / tilt / zoom (PTZ) function are connected and connected. ), If the cooperative monitoring mode is set, whether or not an event occurs in a plurality of different monitoring areas is determined, and if the event occurrence monitoring area and the non-occurring monitoring area exist at the same time, the monitoring areas are captured. To control the pan / tilt / zoom operation for a plurality of surveillance cameras to perform a cooperative monitoring of the event occurrence monitoring area, and then perform a cooperative monitoring operation, and then a new event is added to the non-event monitoring area. When generated, by controlling the pan / tilt / zoom operations for the plurality of surveillance cameras, by recording each original surveillance area to the initial setting state In addition, it is a very useful invention that it is possible to monitor and capture the event occurrence monitoring area more efficiently by further using the monitoring camera of the non-event occurrence area.

Claims (6)

Determining whether an event has occurred for a plurality of different surveillance regions when a cooperative surveillance mode is set in a digital video recorder connected to a plurality of surveillance cameras and sensors; And And as a result of the determination, if the event occurrence monitoring region and the non-occurrence monitoring region exist at the same time, controlling the plurality of surveillance cameras for capturing the surveillance regions, and cooperatively monitoring the event occurrence surveillance region. A cooperative surveillance control method for a digital video recorder. The method of claim 1, In the first step, when the motion detection occurs on the surveillance video captured by the surveillance camera or when the detection signal is received by the sensor, the detection of the event is performed. . The method of claim 1, In the second step, the pan / tilt / zoom operations for the plurality of surveillance cameras are controlled, so that the event generation surveillance region is dividedly photographed using the plurality of surveillance cameras. Cooperative supervisory control method The method of claim 1, During the cooperative monitoring operation, when a new event is generated in the event-free monitoring area, controlling the plurality of monitoring cameras to photograph each original monitoring area in an initial setting state. A cooperative monitoring control method in a digital video recorder, characterized in that the. The method of claim 4, wherein The occurrence of the new event is detected by a sensor installed in the surveillance area, and controls the pan / tilt / zoom operations for the plurality of surveillance cameras to be initially set, thereby photographing each original surveillance area. A cooperative surveillance control method for a digital video recorder. The method according to any one of claims 3 to 5, The control value for controlling the pan / tilt / zoom operation is a result of experiments performed in advance, and is pre-stored in a nonvolatile memory.

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