JP3838881B2 - Surveillance camera device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a monitoring camera device in a monitoring system that performs image processing on an image obtained by an imaging device such as a television camera, detects an intruding object, and tracks the object.
[0002]
[Prior art]
An example of a conventional monitoring system is shown in FIG. A plurality of image input cameras are installed in order to secure a wide monitoring area and to prevent a blind spot for monitoring in the monitoring area.
[0003]
In FIG. 4, reference numerals 11 to 13 denote image input cameras, and reference numerals 21 to 23 denote monitoring images obtained by the image input cameras 11 to 13 to perform image processing to detect an intruding object and to detect intruding object information (intruding object information). Image processing apparatus for generating size, position, brightness, etc.), 30 is a camera control apparatus for generating camera control information based on intruding object information from the image processing apparatuses 21 to 23, 4 is a monitoring camera, 4A Is a zoom lens of the monitoring camera 4, 90 is a turning unit for turning the monitoring camera 4, and 5 is a monitor. Reference numerals 11a to 13a denote imaging ranges of the image input cameras 11 to 13, and 4a denotes an imaging range of the monitoring camera 4.
[0004]
The conventional monitoring system captures the monitoring area with a plurality of image input cameras 11 to 13 to obtain monitoring images, and the image processing device 21 corresponding to the image input cameras 11 to 13 based on these monitoring images. Image processing for detecting an intruding object is performed at ˜23. If an intruding object is detected in this image processing, intruding object information such as the position and size of the intruding object in the monitoring area is output to the camera control device 30. Based on the intruding object information, the camera control device 30 directs the imaging range of the monitoring camera 4 in the direction in which the intruding object exists by the turning unit 90, and zooms in and out the zoom lens 4A according to the size of the intruding object. By controlling, camera control information for optimally capturing the intruding object is generated.
[0005]
In order to secure a wide monitoring area and to prevent a monitoring blind spot in the monitoring area, it is necessary to install a plurality of image input cameras. In addition, an image processing apparatus must be installed for each of the image input cameras 21 to 23.
[0006]
If a plurality of image input cameras and image processing apparatuses are installed, system introduction costs and maintenance costs increase, and it takes time to adjust and set the equipment.
[0007]
Next, FIG. 5 shows a block diagram of a second conventional monitoring system. Reference numeral 1 denotes an image input camera, 2 denotes an image processing device, 3 denotes a camera control device, 1A denotes a wide-angle lens of the image input camera 1, and 1a denotes an imaging range of the image input camera 1. By combining the wide-angle lens 1A with the image input camera 1 and taking an image from the upper part of the monitoring area, the entire range of the monitoring area is captured without blind spots. The monitoring image in the monitoring area captured by the image input camera 1 is input to the image processing device 2 and image processing is performed to obtain an image for detecting an intruding object in the monitoring area. When an intruding object is detected, intruding object information such as the position and size of the intruding object in the monitoring area is output from the image processing device 2 to the camera control device 3. The camera control device 3 generates camera control information for optimally capturing the intruding object by controlling the turning unit 90 of the monitoring camera 4 and the zoom lens 4A of the monitoring camera 4 based on the intruding object information.
[0008]
[Problems to be solved by the invention]
The present invention image-processes a monitoring image obtained by imaging with an imaging device such as a camera, and in a monitoring system that detects and tracks an intruding object, by reducing the number of installed image input cameras and image processing devices, An object of the present invention is to provide a surveillance camera system that shortens the time required for camera adjustment and installation of an image processing apparatus, and that accommodates an image input camera and a surveillance camera in the same camera case and does not take up an installation location.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention includes an image input camera that includes a wide-angle lens capable of securing a wide imaging range and captures an intrusion detection image for intrusion detection of an intruding object, and an optical axis of the wide-angle lens. Rotate around the extension line to secure a horizontal imaging range and rotate vertically to secure an imaging range in the vertical direction to capture the tracking image of the intruding object set to an arbitrary imaging range Image processing is performed based on images from the monitoring camera, a swivel unit that is responsible for setting an arbitrary imaging range from the vertical direction by horizontal and vertical rotation of the monitoring camera, and the image input camera. An image processing unit that detects an intruding object, generates and outputs intruding object information such as the position, size, or luminance of the intruding object; receives the intruding object information; Positioning control information to the swivel unit directed to the imaging range of the incoming object, and further a camera control unit for generating and outputting camera control information for controlling the monitoring camera, a monitoring camera device, The intruding object is monitored by displaying a tracking image of the intruding object output from the monitoring camera device on the monitor.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention is shown in FIG.
[0011]
The tracking image signal 15 of the monitoring camera device 100 of the present invention is displayed on the monitor 5. The configuration of the monitoring camera device 100 is as follows. 6 is an image input camera that obtains a monitoring image, 6A is a wide-angle lens of the image input camera 6 that forms an image with the monitoring range as an imaging range 6a, 10 is a monitoring camera that captures a tracking image of an intruding object, and 10A is a tracking range. The zoom lens of the monitoring camera 10 that forms an image as the imaging range 10a, 9 is a horizontal imaging range by turning the monitoring camera 10 and an up-and-down imaging range by rotating in the vertical direction to set an arbitrary imaging range. The swivel unit 7 that performs the image processing based on the monitoring image obtained by the image input camera 6 detects the intruding object 20, and generates and outputs intruding object information such as the position and size of the intruding object. The image processing unit 8 receives the intruding object information, and controls the position control information 8a to the turning unit 9 that directs the monitoring camera 10 to the imaging range of the intruding object, and further camera control information for controlling the monitoring camera 10. The camera control unit for generating and outputting a b, a. The zoom lens 10A, the monitoring camera 10 and the turning unit 9 simultaneously move to positions indicated by dotted lines after rotating 180 degrees around the optical axis of the wide-angle lens 6A. Reference numeral 14 denotes a dome-shaped case for housing the above components.
[0012]
This operation will be described with reference to FIG.
In FIG. 3, in order to make the description easy to understand, a signal line for transmitting information between each part is omitted. Further, FIG. 4A shows that the monitoring camera 10, the turning unit 9, and the zoom lens 10A have moved to positions behind the image input camera.
[0013]
First, it is assumed that the intruding object 20 first enters the imaging range 6a at time T0. However, at this time, it has not yet entered the imaging range 10a of the monitoring camera 10.
[0014]
However, the intruding object 20 is picked up by the image input camera 6, and the intrusion detection of the intruding object 20 is performed by the image processing unit 7 based on the monitoring image. Then, intruding object information such as the detected position, size or brightness of the intruding object 20 is generated and output to the camera control unit 8.
[0015]
The camera control unit 8 uses the position control information 8a for setting the imaging range 10a of the monitoring camera 10 in the direction of the intruding object 20 based on the intruding object information and the size and brightness for optimally imaging the intruding object 20. Based on such information, camera control information 8b of the monitoring camera 10 is generated. The position control information 8a is supplied to the turning unit 9, and the camera control information 8b is supplied to the monitoring camera 10. Then, at time T1, the turning unit 9 moves to FIG. 3B by the horizontal rotation 51 together with the monitoring camera 10 according to the position control information 8a, and the imaging range 10a is set in the direction of the intruding object 20. As a result, a tracking image of the intruding object 20 is displayed on the monitor 5.
[0016]
Further, as shown in FIG. 3C, even when the intruding object 20 moves to the left in the drawing at time T2 and is in the vicinity immediately below the image input camera 6, the wide-angle lens 6a of the image input camera 6 is used. Thus, a monitoring image of the intruding object 20 is obtained. Based on this monitoring image, the detection of the intruding object 20 is continued in the image processing unit 6 as described above, and intruding object information is generated, and the position control information 8a and the camera control information 8b from the camera control unit 8 as needed. Are output to the swivel unit 9 and the monitoring camera 10, respectively. Accordingly, as shown in FIG. 3C, the direction of the imaging range 10a of the monitoring camera 10 is changed only in the vertical imaging range by the vertical rotation 52, and moves from time T1 to time T2. It is set so as to track the intruding object 20 that is being operated. As a result, the monitor 5 can display a tracking image of the intruding object 20 in the vicinity immediately below the image input camera 6.
[0017]
At time T3 in FIG. 3D, the horizontal rotation 51 is performed together with the monitoring camera 10, the turning unit 9, and the zoom lens 10a based on the intruding object information generated based on the monitoring image of the image input camera 6. Even when the intruding object 20 is turned around the optical axis of the image input camera 6 and the intruding object 20 is located on the left side of the drawing, the imaging range 10a of the monitoring camera 10 is set in that direction. The image continues to be displayed on the monitor 5.
[0018]
FIG. 2 shows a monitoring camera device 101 of the second embodiment in which the image processing unit 7 and the camera control unit 8 are installed outside the monitoring camera device 100. With such a configuration, the apparatus can be reduced in size. Since the operation is the same as described above, a description thereof will be omitted.
[0019]
【The invention's effect】
According to the present invention, the number of installed image input cameras and image processing apparatuses can be reduced, the time required for camera adjustment and installation of the image processing apparatus can be shortened, and system introduction costs and maintenance costs can be reduced. In addition, it is possible to provide a monitoring camera device that does not take an installation place by storing the image input camera and the monitoring camera in the same camera case.
[Brief description of the drawings]
FIG. 1 is a block diagram of a surveillance camera device in a first embodiment of the present invention. FIG. 2 is a block diagram of a surveillance camera device in a second embodiment of the present invention. FIG. 4 is a diagram for explaining the operation of the surveillance camera device in the embodiment of the present invention. FIG. 4 is a diagram showing a first example of the configuration of the conventional surveillance camera device. FIG. Diagram showing an example
DESCRIPTION OF SYMBOLS 1, 11-13: Camera for image input, 1A: Wide angle lens, 2, 21-23: Image processing apparatus, 3: Camera control apparatus, 4: Camera for monitoring, 4A: Zoom lens, 5: Monitor, 6a, 10a 11a, 11b, 1c: imaging range, 6: image input camera unit, 7: image processing unit, 8: camera control unit, 8a position control information, 8b: camera control information, 9: swivel unit, 9, 90: Swivel unit, 10: surveillance camera, 10A: zoom lens, 15: tracking image signal, 20: intruding object, 51: horizontal rotation, 52: vertical rotation, 100, 101: surveillance camera device

Claims (3)

Imaging a monitoring area of the object to obtain a monitoring image, a monitoring camera apparatus for obtaining the image by tracking the object based on object information obtained by detecting the object from the monitoring image,
An image input camera that has a wide-angle lens and captures the monitoring area to obtain a monitoring image, and rotates or vertically rotates based on the object information about the optical axis extension line of the wide-angle lens, a monitoring camera to be tracked, the a turning unit for controlling the movement of the pivoting or vertical rotation of the monitor camera, monitoring camera apparatus, characterized in that it comprises a In the invention of claim 1,
A surveillance camera device, wherein the image input camera, the surveillance camera, and the swivel unit are housed in the same housing. In the invention of claim 2,
An image processing unit that generates the object information from the monitoring image, a camera control unit that controls the monitoring camera based on the object information, and a camera control unit that generates position control information for controlling the turning unit. A surveillance camera device comprising:

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