JP2008219452A - Camera surveillance device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camera surveillance device capable of maintaining automatic tracking even if another invader invades when the surveillance camera is performing the automatic tracking after detecting the invader. <P>SOLUTION: An identifying means of sensor detection information 2 identifies a position of the invader based on invader detection information from a position detection sensor 1 for detecting the position of the invader who invades within a monitoring area, then an image processing means 4 extracts an image of the invader based on image data from the surveillance camera 3 and determines operation information of the invader. Besides, a camera controlling means 5 controls an operation of the surveillance camera 3 based on invader position information by the sensor detection information identifying means 2 and invader operation information by the image processing means 4, and determines whether or not making an adjacent camera take over the automatic tracking when the other invader enters while the surveillance camera 3 is performing the automatic tracking. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a camera monitoring device that detects an intruder as a tracking target from video data from a sensor and a monitoring camera that detects the intruder, and automatically tracks the tracking target, and particularly, cooperation between a plurality of cameras. The present invention relates to a camera monitoring device that enables work.

  Conventionally, the control unit controls the status of camera monitoring, shooting direction, zoom-up, etc. based on the sensor signal, sends the surveillance camera video signal to the monitor, and also digitizes the sensor signal. And the video signal are multiplexed and sent to a recording device, and the recording device stores the multiplexed video signal and sensor detection history (see Patent Document 1).

  In recent years, an automatic tracking device has been put into practical use in which a video is constantly captured using a surveillance camera, and when an intruder is detected in the captured image, the detected intruder is tracked and photographed. .

  For example, an intruding object tracking image processing system that automatically detects an intruding object from an image signal captured and output by a television camera, tracks the intruding object and enlarges it on a video monitor screen, and makes it easy to monitor the intruding object. (See Patent Document 2).

JP 2000-69459 A Japanese Patent Laid-Open No. 11-69342

  Currently, it is necessary to monitor a wide range of monitoring areas with a single revolving camera, reduce the number of cameras, perform monitoring efficiently, and reduce costs. In addition, after detecting an intruder with a sensor or the like over a wide monitoring area, it is necessary to automatically track the intruder moving in the monitoring area continuously with a plurality of cameras.

  In the conventional technology, after an intruder is detected by a sensor or the like, the intruder is photographed by a surveillance camera near the sensor, and when the intruder is detected by performing image processing to perform automatic tracking, the surveillance camera enters There is a problem that it is impossible to deal with when another intruder enters the monitoring area after the tracking of the person starts.

  For example, after an intruder is detected by a sensor or the like, the intruder is photographed by a monitoring camera in the vicinity of the sensor, and the intruder is detected and automatically tracked by performing image processing. When an intruder is detected, the camera cannot control whether priority is given to the automatic tracking of the person who invades first, or priority is given to the shooting of the person who invades later.

  In addition, when there is another surveillance camera near the sensor, one of the adjacent cameras automatically tracks the person who invades first, and the other one adjoins the person who invaded later. It was not possible to cooperate between the cameras and share them with each other for automatic tracking.

  The present invention has been made to solve the above-described problems. When an intruder is detected by a sensor or the like and then an intruder is detected by image processing of a monitoring camera image to perform automatic tracking, the surveillance camera It is an object of the present invention to provide a camera monitoring device that can cope with a case where another intruder enters the surveillance area after tracking of the intruder starts.

  In addition, by making it possible to pass monitoring near the view angle boundary between each monitoring camera, it is possible to monitor widely with a single turning camera, reduce the number of cameras and perform monitoring efficiently, It is an object of the present invention to provide a camera monitoring device capable of automatically tracking an intruder moving in a monitoring area in a monitoring area without losing sight of the intruder continuously with a plurality of monitoring cameras.

  The camera monitoring device according to the present invention is installed on the outer periphery of the monitoring area and detects the position of the intruder who has entered the monitoring area, and the position of the intruder based on the intruder detection information from the position detection sensor. A sensor detection information identifying means for identifying the intruder, an image processing means for extracting an intruder image as a moving object based on video data from the surveillance camera, and discriminating movement information of the intruder, and a sensor detection information identifying means Control the operation of the surveillance camera from the intruder location information and the intruder operation information by the image processing means, and if another intruder enters while the surveillance camera is automatically tracking, allow the adjacent surveillance camera to take over the automatic tracking And a camera control means for enabling this.

  According to the camera monitoring apparatus of the present invention, the intruder is installed on the outer periphery of the monitoring area and detects the position of the intruder who has entered the monitoring area, and the intruder detection information from the position detection sensor. Sensor detection information identifying means for identifying the position of the camera, image processing means for extracting the intruder image as a moving object based on video data from the surveillance camera, and determining the intruder's motion information, and sensor detection information identification Control the operation of the surveillance camera from the intruder location information by the means and the intruder operation information by the image processing means, and when another intruder enters while the surveillance camera is automatically tracking, the adjacent surveillance camera is automatically tracked. Since the camera control means that enables the camera to take over is provided, another intruder enters the surveillance area after the surveillance camera starts automatic tracking of the intruder. Even if it is detected by the position detection sensor it becomes possible to respond appropriately.

  In addition, it is also possible to exchange images near the view angle boundary between surveillance cameras, so that one surveillance camera can monitor widely, and the number of cameras can be reduced for efficient surveillance and a wide surveillance area. On the other hand, an intruder moving in the monitoring area can be automatically tracked by a plurality of monitoring cameras without losing sight of the intruder continuously.

Embodiment 1 FIG.
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the inside of a camera monitoring apparatus according to Embodiment 1 of the present invention. The camera monitoring apparatus according to the present invention is a sensor detection information identifying unit 2 that identifies the position of an intruder based on intruder detection information from the position detection sensor 1 and an intrusion that is a moving object based on video data from the monitoring camera 3. From the image processing means 4 for extracting the intruder's image and determining the intruder's movement information, the intruder's position information by the sensor detection information identification means 2 and the intruder's movement information by the image processing means 4. Camera control means 5 for controlling the operation and video display means 6 for displaying video data from the monitoring camera 3 are provided.

  The output of the position detection sensor 1 that is installed on the outer periphery of the monitoring area and detects the position of the intruder entering the monitoring area is input, and the camera control means 5 controls the monitoring camera 3 that can control pan, tilt, and zoom. Automatic tracking of intruders.

  One or a plurality of position detection sensors 1 are installed on the outer periphery of the monitoring area so that the position of the intruder can be detected. One or a plurality of monitoring cameras 3 are installed near the position detection sensor 1 or in the monitoring area.

  The position detection sensor 1 only needs to be capable of detecting an intruder (human) and have an accuracy within a range where the detection position is within the angle of view of the monitoring camera 3. For example, an infrared sensor can detect an intruder by blocking an infrared beam transmitted from a projector to a light receiver, and the distance between the light projector and the light receiver is at most about 100 m. It fits within the angle of view of the camera 3.

  In addition, the position of an intruder may be accurately detected in a wide range of monitoring areas using a trouble detection device that uses a leaky transmission line such as a leaky coaxial cable or a leaky waveguide. Furthermore, by using a trouble detection device that uses such a leaky transmission line, it is possible to detect only objects that are larger than a certain size, so that it is not necessary to detect objects smaller than humans, and efficient monitoring is possible. It can be performed.

  The surveillance camera 3 is mounted on a pan head or the like that can be electrically controlled, has pan and tilt drive functions, and has zoom and focus control functions for the camera lens. Since one surveillance camera 3 can shoot a wide range, it is sufficient to prepare the minimum number of surveillance cameras 3 for photographing the entire surveillance area, the number of cameras can be reduced, and monitoring can be performed efficiently. Will be able to do.

  The sensor detection information identification unit 2 identifies the position of the intruder from the ID number for each position detection sensor and the ID number for each detection position transmitted when the position detection sensor 1 detects the intruder.

  When the video data from the monitoring camera 3 is input, the image processing means 4 compares the current image with the previous image and extracts a change in the image. Extraction of an image change is possible, for example, by taking a difference between a background image and an input image and extracting a region where the difference exceeds a certain threshold.

  The camera control unit 5 controls panning, tilting, and zooming of the surveillance camera 3 based on the intruder position information by the sensor detection information identification unit 2 and the intruder operation information by the image processing unit 4.

  When the position detection sensor 1 detects an intruder, the intruder detection information is transmitted to the sensor detection information identification unit 2. The sensor detection information identification unit 2 identifies the position of the intruder from the intruder detection information. The sensor detection information identification unit 2 notifies the camera control unit 5 of the position of the identified intruder.

  The camera control means 5 controls panning, tilting and zooming of the surveillance camera 3 in accordance with the notified position of the intruder. The monitoring camera 3 can be controlled, for example, by defining the pan angle, tilt angle, and zoom magnification in the control definition table 7 for each detection location of the position detection sensor 1.

  With the above operation, when the position detection sensor 1 detects an intruder, the surveillance camera 3 can be controlled so that the intruder detection location can be photographed, and the surveillance camera 3 can photograph the intruder. Since the video data photographed by the surveillance camera 3 is input to the image processing means 4, when the photographed intruder moves, operation information (speed, direction, etc.) of the intruder is extracted. Specifically, the speed is calculated by taking the difference in 1/30 seconds, and the direction is determined by the angle of the monitoring camera 3.

  The image processing unit 4 calculates the pan angle, the tilt angle, and the zoom magnification so that the intruder is positioned at the center of the angle of view of the surveillance camera from the extracted intruder operation information, and notifies the camera control unit 5 of it. The camera control means 5 can automatically track the intruder by controlling the monitoring camera 3 based on the notified information.

  The video display means 6 displays the video data from the monitoring camera 3 on a display device such as a CRT. Here, after the intruder is detected by the position detection sensor 1, the intruder is photographed by the monitoring camera 3 near the position detection sensor 1, and the movement of the intruder is extracted from the video data from the monitoring camera 3 by the image processing means 4. The operation when the position detection sensor 1 detects another intruder while the surveillance camera 3 is controlled and the intruder is automatically tracked will be described.

  It is the same as the above until the position detection sensor 1 detects an intruder and notifies the sensor detection information identification unit 2 and the sensor detection information identification unit 2 notifies the camera control unit 5. The camera control means 5 first checks whether the monitoring camera 3 is in automatic tracking.

  If the monitoring camera 3 is not in automatic tracking, the monitoring camera 3 is controlled so that the angle of the camera is immediately directed to the detection location of the position detection sensor 1. When the monitoring camera 3 is in automatic tracking, the control definition table 7 is checked and the automatic tracking of the person who has invaded first is continued, or the automatic tracking is interrupted and the monitoring camera is placed at the intrusion location of the person who has invaded later. It is determined whether or not to control 3 to be directed.

  The control definition table 7 defines whether to give priority to automatic tracking for each monitoring camera 3 or to give priority to new intruder detection information. Depending on the importance of each monitoring camera 3 installation location (for example, whether important equipment for protection is installed, etc.), priority is given to automatic tracking, or new intruder detection information from the position detection sensor 1 is obtained. It is defined whether to give priority, and the monitoring area can be monitored efficiently.

  Further, in the control definition table 7, an adjacent monitoring camera 3 is defined for each monitoring camera 3. When the monitoring camera 3 is automatically tracking, the camera control means 5 checks the control definition table 7. If there is an adjacent camera 3, the adjacent camera 3 is directed to the direction of the person who has entered the track and is adjacent. It is possible to take over the automatic tracking of the person who has entered the camera first. Then, the original surveillance camera 3 can be controlled so as to be directed to the detection place of the person who has invaded later.

  By defining adjacent cameras in this way, it becomes possible to take over automatic tracking in the vicinity of the angle-of-view boundary between the monitoring cameras 3, and a plurality of intruders moving in the monitoring area can be monitored in a wide range of monitoring areas. Automatic tracking can be performed without losing sight of the intruder continuously with the camera 3. Even if another intruder intrudes during automatic tracking, it is possible to take a picture of each intruder by taking over and sharing the monitoring with the adjacent monitoring camera 3.

  As described above, according to the present invention, after the intruder is detected by the position detection sensor 1, the operation information of the intruder is extracted by the image processing unit 4 based on the video data of the monitoring camera 3, and the monitoring camera 3 is When controlling and automatically tracking an intruder, even if another intruder enters the monitoring area and is detected by the position detection sensor 1 after the surveillance camera 3 starts automatic tracking of the intruder, the position detection sensor 1 responds appropriately. Will be able to.

  In addition, it is possible to transfer images near the boundary of the angle of view between the monitoring cameras, and it is possible to monitor widely with a single monitoring camera 3, to efficiently monitor by reducing the number of cameras, and to monitor a wide range. With respect to the area, the intruder moving in the monitoring area can be automatically tracked by the plurality of monitoring cameras 3 without losing sight of the intruder.

Embodiment 2. FIG.
FIG. 2 is a block diagram showing the inside of a camera monitoring apparatus according to Embodiment 2 of the present invention. When the position detection sensor 1 detects an intruder, the operation similar to the operation described in the first embodiment is performed, and the camera control unit 5 notifies the video storage unit 8 to store the video data from the monitoring camera 3. To do.

  The video storage unit 8 stores video data from the surveillance camera 3. Further, even when the camera control means 5 controls the surveillance camera 3 and starts the automatic tracking of the intruder, the camera control means 5 notifies the video accumulation means 8 to accumulate the video data from the surveillance camera 3, The video storage means 8 stores video data in the storage device 9.

  As described above, according to the present embodiment, by providing the video storage unit 8 as shown in FIG. 2, when the sensor detection information identification unit 2 identifies the intruder position, or the image processing unit 4 detects the intruder. When the detection and automatic tracking are started, the video data from the monitoring camera 3 can be automatically stored. As a result, the video capturing the intruder in the video taken by the surveillance camera 3 can be automatically recorded and accumulated, and the intruder is projected without recording and accumulating all the video taken for 24 hours. Since only video needs to be recorded and stored, efficient intruder monitoring can be performed.

Embodiment 3 FIG.
FIG. 3 is a block diagram showing the inside of a camera monitoring apparatus according to Embodiment 3 of the present invention. When the position detection sensor 1 detects an intruder, the operation similar to the operation described in the first embodiment is performed, and the camera control unit 5 notifies the video distribution unit 10 to distribute the video data from the monitoring camera 3. To do.

  The video distribution means 10 distributes the video data from the monitoring camera 3 to another video monitoring system. Further, even when the camera control means 5 controls the surveillance camera 3 to start the automatic tracking of the intruder, the camera control means 5 delivers the video data so as to distribute the video data from the surveillance camera 3 to another video surveillance system. The distribution means 10 is notified.

  As described above, according to the present embodiment, by providing the video distribution unit 10 as shown in FIG. 3, when the sensor detection information identification unit 2 identifies the intruder position, the image processing unit 4 identifies the intruder. When the detection and automatic tracking are started, the video data from the monitoring camera 3 can be automatically distributed to a video monitoring system at a remote location.

  As a result, the video capturing the intruder in the video taken by the surveillance camera 3 can be automatically distributed to a plurality of video surveillance systems, etc., and the video surveillance system monitors all the videos taken for 24 hours. Therefore, it is only necessary to monitor the video showing the intruder, so that efficient intruder monitoring can be performed even in a remote place.

Embodiment 4 FIG.
4 is a block diagram showing the inside of a camera monitoring apparatus according to Embodiment 4 of the present invention. When the position detection sensor 1 detects an intruder, the camera control unit 5 notifies the illumination unit 12 to turn on the illumination 11 in the monitoring area while operating in the same manner as the operation described in the first embodiment. Further, even when the camera control unit 5 controls the monitoring camera 3 and starts the automatic tracking of the intruder, the camera control unit 5 notifies the illumination unit 12 to turn on the illumination 11 in the monitoring area.

  As described above, according to the present embodiment, by providing the illumination unit 12 as shown in FIG. 4, when the sensor detection information identification unit 2 identifies the intruder position, or the image processing unit 4 detects the intruder. When the automatic tracking is started, the illumination 11 in the monitoring area can be automatically turned on. As a result, the intruder can be clearly photographed even at night, the intruder can be detected by the image processing means 4, and the automatic tracking by the surveillance camera 3 can be performed, so that efficient intruder monitoring can be performed.

It is a block block diagram which shows the inside of the camera monitoring apparatus by Embodiment 1 of this invention. It is a block block diagram which shows the inside of the camera monitoring apparatus by Embodiment 2 of this invention. It is a block block diagram which shows the inside of the camera monitoring apparatus by Embodiment 3 of this invention. It is a block block diagram which shows the inside of the camera monitoring apparatus by Embodiment 4 of this invention.

Explanation of symbols

1 position detection sensor, 2 sensor detection information identification means, 3 surveillance camera,
4 image processing means, 5 camera control means, 8 video storage means, 10 video distribution means,
11 Proof, 12 Proof means.

Claims (4)

A position detection sensor that is installed on the outer periphery of the monitoring area and detects the position of the intruder who has entered the monitoring area, and sensor detection information identifying means for identifying the position of the intruder based on the intruder detection information from the position detection sensor And image processing means for extracting an intruder image as a moving object based on video data from the surveillance camera, and determining intruder operation information, intruder position information by the sensor detection information identification means and the image Controls the operation of the monitoring camera from the intruder operation information by the processing means, and allows another monitoring camera to take over the automatic tracking when another intruder enters while the monitoring camera is automatically tracking. And a camera control unit. 2. A camera monitoring apparatus according to claim 1, further comprising video storage means for storing video data from said monitoring camera. 3. The camera monitoring apparatus according to claim 1, further comprising a video distribution means for distributing video data from the monitoring camera. The camera monitoring apparatus according to any one of claims 1 to 3, further comprising illumination means for turning on illumination of the monitoring area.

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