JP2004007374A - Method for monitoring and recording picture by using motion detection and remote supervisory system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems that a small object cannot be specified when a wide angle camera is used, it is necessary to increase the number of cameras to be set when preference is placed on specification of the object and communication costs are increased to constantly monitor images because the states of a remote place cannot be grasped only by reports in the case of remote supervisory. <P>SOLUTION: A remote supervisory system is constituted of a wide angle camera capable of photographing an area to be monitored, a camera B having panning/tilting/zooming functions and allowed to be driven by an external signal, a motion detection unit 5 for controlling the camera B by detecting a moving object from pictures of the wide angle camera A or a sense signal from a sensor 3 and outputting a signal in detection, a picture recording unit 7 for recording pictures from the camera B and starting/stopping the recording of pictures by the signal in detecting which is outputted from the motion detection unit 5, and a communication unit 8 for controlling the picture recording unit 7 and sending the information of pictures or the like to a supervisory source 9. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an image monitoring / image recording using a monitoring camera constituting a security system, and a remote monitoring system.
[0002]
[Prior art]
In image monitoring using a conventional monitoring camera, a wide-angle camera and a pan-tilt camera are used. (See, for example, Unpublished Patent Application 1)
[0003]
[Unpublished patent application 1]
Japanese Patent Application No. 2002-167309 (Pages 5 to 7, Fig. 1)
[0004]
[Problems to be solved by the invention]
A wide-angle camera is installed to cover the area to be monitored, but has the following disadvantages.
{Circle around (1)} It is not possible to identify small objects (distant objects, etc.).
{Circle around (2)} When giving priority to specifying an object, it is necessary to divide the area and increase the number of cameras installed.
In addition, as for image recording, images are always recorded even when there is no monitoring target (people coming and going, etc.),
(3) Running cost is required.
{Circle around (4)} It takes time and effort to search for recorded images.
Furthermore, when monitoring remotely,
(5) The status of the monitoring destination cannot be understood from the report alone.
{Circle around (6)} To constantly monitor images, communication costs increase.
Further, the invention in Patent Document 1 is configured to link a wide-angle camera and a pan-tilt camera to automatically track a moving image. However, not only is the circuit configuration complicated, but also an object that is moved by the two cameras. In order to continuously capture images in the field of view and perform automatic tracking photographing, control means are also complicated.
[0005]
[Means for Solving the Problems]
The present invention has been made to solve the above-described disadvantages of the related art, and has a wide-angle camera A capable of capturing a wide area to be monitored.
A camera B having a pan / tilt / zoom function and capable of controlling each of the functions by an external signal;
A sensor composed of a door sensor, a passive sensor, and the like;
A monitor for displaying an image from the camera B or a reproduced image of the image recording unit;
A monitor capable of displaying a cursor for a visitor to make the visitor aware that the camera B is being tracked and monitored;
When a moving object in the image of the camera A is detected, a control signal of pan / tilt / zoom is transmitted to the camera B in order to photograph the detected object with the camera B,
Outputs a signal during detection from the detection of a moving object until the object moves out of the screen,
Further, the camera B is controlled to a predetermined place by the sense signal from the sensor, and the detection signal is turned on when the sense signal is input, and the detection signal is output after a certain period when the sense signal input is lost. A motion detection unit for turning off the
An alarm consisting of a buzzer, display lamp, etc., which outputs a warning by inputting a signal during detection;
An image recording unit which records an image of the camera B and which can record a recording start date and time for starting and stopping recording of the image in response to a signal during detection from the motion detection unit. An image monitoring and image recording method using motion detection for monitoring and image recording.
[0006]
A communication unit that provides the motion detection unit and the image recording unit, controls the image recording unit, can monitor the operation, and sends out information such as an image including the recorded detection start date and time via a communication line. Thus, a remote monitoring system using motion detection was configured.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of an image monitoring / image recording and remote monitoring system using motion detection according to the present invention.
[0008]
The camera A1 is a wide-angle camera, and sends a motion detection image of a captured object to the motion detection unit 5.
The camera B2 has a pan / tilt / zoom function, performs a pan / tilt / zoom operation in accordance with a control signal from the motion detection unit 5 in accordance with the motion of an object, and monitors a clear image that cannot be obtained with the wide-angle camera A1. 4 sends ₁ and _{4 2.}
Sensor 3 ₁ to 3 _n consisting of the door sensor and the passive sensor or the like is sent to the motion detection unit 5 a sense signal by detecting movement.
Monitor 4 ₁ is intended to display a reproduced image of the image of the camera B2 or image recording unit 7, and also the monitor 4 ₂ to visitor image or reproduced image of the image recording unit 7 of the camera B2 as a tracking image It is a monitor for foreign visitors who displays and makes the foreign visitors aware that the camera is being tracked and monitored.
When the tracking is emphasized, a cursor is displayed on the entire image.
[0009]
The circuit configuration of the main control unit 51 of the motion detection unit 5 is as shown in FIG.
Motion detecting unit 21 for outputting a detection signal and the detected position information to detect moving objects in the camera A1, position information are stored the position information set in advance in response to the input of the sensor 3 ₁ ~3 _n 30 ₁ to 30 _n, the sensor ₃ 1 to 3 input from the _n keep a certain time ON state even lost timer ₃₁ 1 to 31 _n, the input position from the detected position information or the sensor ₃ 1 to 3 _n from the motion detection unit 21 A camera control unit 28 for generating a control signal to the camera B2 from the information; a delay timer 29 for delaying a select signal (switching from the camera A1 to the camera B2) from the signal being detected; and selectors 22 to 24, priority encoders 25 and 26 , OR circuit 27.
Operation characteristics of the timer 31 ₁ to 31 _n is as shown in FIG. 3, so even if there is no input from the sensor 3 ₁ to 3 _n maintain a predetermined time ON state, the one-shot pulse (sense time short pulse signal (A sensor that outputs only the sensor signal), and the state after the sensor signal disappears can also be monitored.
FIG. 4 shows a situation where the select signal is delayed by the delay timer 29 from the signal being detected and the image output is switched from the camera A1 to the camera B2.
[0010]
The motion detection unit 5 receives the image from the camera A1, sends a pan / tilt / zoom control signal to the camera B2 in order to detect a moving object in the image and shoot the image with the camera B2, Then, the control of the camera B2 is continued to send a signal indicating that the moving object is detected to the alarm 6, the image recording unit 7, and the communication unit 8 from the detection of the moving object to the frame out of the screen.
Further, by inputting the sensing signal from the sensor 3 ₁ to 3 _n, and controls the pan-tilt-zoom camera B2 toward the pre-designated location.
Incidentally, the motion detection unit 5, the sensor 3 ₁ to the sensing signal inputs from to 3 _n, and ON the detection in the signal, the alarm 6 detection in the signal to turn OFF the detection in the signal after a period of time between detection in the signal is eliminated, Output to the image recording unit 7 and the communication unit 8.
[0011]
The alarm 6 includes a buzzer 11, a display lamp 12, and the like. The detection signal from the motion detection unit 5 is input to activate the buzzer and the display lamp, and the detection signal is sent to the image recording unit 7. You.
Therefore, when the alarm 6 is activated, the state of the monitor 4 may be monitored, and it is not necessary to constantly monitor the monitor 4.
The image recording unit 7 records an image of the camera B2, and inputs a signal during detection from the motion detection unit 5 via the alarm 6, and starts / stops image recording.
At the same time as the operation of the image recording unit 7 starts, the date and time of the recording start is recorded.
[0012]
The communication unit 8 can control and monitor the operation of the image recording unit, and can record the previous image (the image immediately before receiving the signal during detection), the current image (the image at the time when the signal during detection is received, in this case, the camera A1). ), And the subsequent image (several frames immediately after receiving the signal during detection, in this case, the image of the camera B2) can be sent to the monitoring source 9 via the communication line 10, and the detection start date and time and the image Report information.
[0013]
The monitoring source 9 uses the image before the occurrence of the abnormality (previous image) and the image at the time of occurrence (the current image) to determine what has occurred in the monitoring area in the image of the camera A1 and the image after the occurrence of the abnormality (back image). , Detailed information (person confirmation, etc.) can be obtained.
In addition, by completing the movement of the camera B2 (pan / tilt / zoom operation for capturing a moving object) during the period from the detection signal to the select signal (switch to the camera B2), an unclear image (moving) is obtained. The pan / tilt / zoom image for photographing the object is not sent to the monitoring source 9.
[0014]
【The invention's effect】
As described above, in the image monitoring / image recording method and the remote monitoring system using the motion detection according to the present invention, since the moving object is tracked and photographed by the camera B using the motion detection by the camera A, a clear image is obtained. Since the image is recorded based on the obtained and detected signal, the running cost can be suppressed.
Further, at the time of reproducing the image recording, it is possible to smoothly search for the image to be viewed from the information of the recorded date and time, and in the case of remote monitoring, the communication cost can be reduced.
Further, a monitor for displaying the image or the reproduced image as a tracking image to a visitor is provided separately from the monitor for displaying the image from the camera B or the reproduced image from the image recording unit. • Helps to be aware that you are under system monitoring.
Further, the monitoring source can accurately grasp the status of the monitoring destination based on the transmitted image, and the number of monitoring personnel can be reduced by centralized monitoring.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an image monitoring / image recording and remote monitoring system using motion detection according to the present invention.
FIG. 2 is a block diagram showing a circuit configuration of a main control unit of the motion detection unit according to the present invention.
FIG. 3 is a waveform chart showing operation characteristics of a timer.
FIG. 4 is a situation diagram showing a relationship between cameras A and B based on a detection signal and a select signal output by the motion detection unit.
[Explanation of symbols]
1 Camera A
2 Camera B
3 _{1 to} 3 _n sensor 4 ₁ , 4 ₂ monitor 5 motion detection unit 6 alarm 7 image recording unit 8 communication unit 9 monitoring source 10 communication line 11 buzzer 12 display lamp 21 motion detection unit 22 to 24 selector 25, 26 priority encoder 27 OR circuit 28 Camera control unit 29 Delay timers 30 ₁ to 30 _n Position information 31 _{1 to} 31 _n timer

Claims (3)

When a motion of a moving object is detected by inputting an image captured by the wide-angle camera A, a camera B having a pan / tilt / zoom function is controlled and a detection signal is output to an image recording unit, an alarm and a communication unit. A motion detection unit,
An image recording unit that records an image from the camera B, starts / stops recording of an image according to a signal during detection from the motion detection unit, and records the recording start date and time;
A monitor for displaying an image from the camera B or a reproduced image from the image recording unit;
A monitor capable of displaying a cursor for a visitor to make the visitor aware that the camera B is being tracked and monitored;
An image monitoring and image recording method using motion detection, characterized in that a tracking image monitoring and image recording of an object whose motion is detected are performed. Based on the sense signal from the sensor input to the motion detection unit, the pan / tilt / zoom of the camera B is controlled toward a designated place in advance, and when the sense signal is input at this time, the detecting signal is turned on, and the sense signal is turned on. 2. The image monitoring / image recording method using motion detection according to claim 1, wherein the signal under detection is turned off after a predetermined period when there is no signal input. A motion detection unit including a wide-angle camera A, a camera B having a pan / tilt / zoom function, and a sensor;
An image recording unit with multiple alarms and monitors,
A communication unit that can control the image recording unit, monitor the operation, and sends information such as an image including a recorded detection start date and time to a monitoring source via a communication line;
A remote monitoring system using motion detection characterized by comprising:

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