JPH09172629A - Burglar monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a burglar monitor device capable of accurately fetching video indicating abnormality by providing two sensor memories and its accessary circuit. SOLUTION: The videos fetched from a monitor camera 1 are mutually written in frame memories 4 and 5 by frame unit. Inner data of data written in the frame memories 4 and 5 is written at any time in the inner sensor memories 8 and 9. A comparing part 12 compares pixels between the inner sensor memories 8 and 9 by following it, counts the number of different pixels and judges abnormality when the number of the pixels exceeds a certain setting value. When the information is sensed by an image recording part 19 and the required video V is not perfectly inputted to the frame memories 4 and 5, the monitor camera 1 is controlled. A camera control part 17 judges the movement direction of the monitor camera 1 by judging in which area of a memory the different pixels compared in the comparing part 12 is so that the required image V is permitted to be in the frame memories 4 and 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security monitoring device used in a security system or the like.

[0002]

2. Description of the Related Art As a sensor of a security device, image information continuously output from a surveillance camera is written in two frame memories, information written in each frame memory is sequentially read and compared, and the number of different images is set. There is a security monitoring device that sends out a detection output when the value is exceeded.

When all the images output from the surveillance camera are read in size and compared with each other in each frame size, the essential part is not captured and only a part of the detection output is sent out. Therefore, there is also a crime prevention monitoring apparatus that captures an image of the most important part by capturing the entire frame size when an abnormality is detected by comparing the internal regions of the entire frame size.

[0004]

However, even if an abnormality is detected in the internal area of the entire frame size and then the entire screen is captured, the desired image is at the edge of the display screen, which is an important part. However, there is a problem in that it may not be taken in.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a crime prevention monitor capable of accurately capturing an image showing an abnormality.

[0006]

A security monitoring apparatus of the present invention comprises a surveillance camera with a variable direction, two frame memories for reading images in frame units, and two internal sensor memories for reading images further inside the frame memory. And comparing the pixels between the internal sensor memories and judging that there is an abnormality when the number of different pixels exceeds the set value, and the position in the internal sensor memory where the image appears determines the direction in which the surveillance camera should be moved. The camera control unit and the image recording unit that records the monitoring video are provided.

[0007]

DETAILED DESCRIPTION OF THE INVENTION

(Embodiment 1) With the above configuration, a surveillance camera is installed at a target location, images are always compared in each frame by an internal sensor memory, and the entire screen is captured when the number of different pixels exceeds a certain set value. At the same time, depending on which address on the memory the position sensed by the internal sensor memory corresponds to, the camera control unit moves the surveillance camera up, down, left and right by a certain angle to display a desired image.

The first embodiment of the present invention will be described below.
This will be described with reference to FIGS.

In FIG. 1, 1 is a surveillance camera whose direction can be changed, 4 and 5 are frame memories which are read alternately in frame units, and 8 and 9 are internal sensors which read the internal sensor areas in the frame memories 4 and 5, respectively. A memory, 12 is a comparison unit that reads out a different pixel between the internal sensor memories 8 and 9, 17 is a camera control unit that determines the position of the different pixel and determines the direction to move the camera from that position, 19 is a frame after camera control, An image recording unit that sequentially reads and records images from the memories 4 and 5.

The operation of the security monitoring apparatus constructed as above will be described with reference to FIG. First, the images captured from the surveillance camera 1 are alternately written in the frame memories 4 and 5 frame by frame. Then, internal data of the data written in the frame memories 4 and 5 is written in the internal sensor memories 8 and 9 as needed. The comparison unit 12 compares the pixels between the internal sensor memories 8 and 9 accordingly, counts the number of different pixels, and determines that there is an abnormality when the number of pixels exceeds a certain set value.

After that, when the image recording unit 19 senses the information, the image recording unit 19 displays the desired image V as shown in FIG.
Starts to directly receive and record the image 20 of the frame memories 4 and 5 which has completely entered. However, as shown in FIG. 3, there may be a case where the desired image V cannot be completely entered, and in this case, control of the surveillance camera 1 is required.

Therefore, the camera control unit 17 determines the moving direction of the surveillance camera 1 depending on which area of the memory the different pixels compared by the comparison unit 12 are, and the desired image V is stored in the frame memories 4 and 5. To enter.

Camera control will be described with reference to FIG. First, the internal sensor memories 8 and 9 are divided into certain pixel units. FIG. 4 shows a case where the vertical is divided into 21 lines and the horizontal is divided into 11 lines. For example, if an image appears on 10 vertical lines, the surveillance camera 1 moves to the right by a predetermined angle, and if an image appears on 5 horizontal lines,
The surveillance camera 1 is made to move upward. Similarly, vertical-
When the image appears on the 10th line, it moves to the left, and when the image appears on the horizontal-5 line, it moves downward by a certain angle. By performing such control, more accurate monitoring can be performed.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS.

In FIG. 5, 20 is a zoomable surveillance camera, 4 and 5 are frame memories which are read alternately in frame units, 21 and 22 are internal memory memories 8 in the first embodiment inside the frame memories 4 and 5, respectively. , An external sensor memory that reads in a portion other than 9, and 12 a comparison unit that compares pixels between the external sensor memories 21 and 22 to detect an abnormality,
Reference numeral 17 denotes a camera control unit that controls the zoom of the monitoring camera 20 until the number of different pixels in the external sensor memories 21 and 22 becomes smaller than a certain set value, and 19 after camera control, sequentially reads and records images from the frame memories 4 and 5. The image recording unit.

The operation of the security monitoring apparatus according to the second embodiment configured as described above will be described with reference to FIGS. 6 to 7. First, in the external sensor memories 21 and 22, the data 24 other than the internal sensor area in the data written in the frame memories 4 and 5 is written at any time. The comparator 12 compares the pixels between the external sensor memories 21 and 22 accordingly, counts the number of different pixels, and determines that there is an abnormality when the number of pixels exceeds a certain set value. In that case, it may be possible that the desired image V is out of the display area as shown in FIG. 6. Therefore, in the camera controller 17, the difference pixel number is set so that the image V enters the display area as shown in FIG. The zoom is controlled until it falls below a set value. After that, when the desired image V is completely entered, the images in the frame memories 4 and 5 are recorded in the image recording unit 19.

[0017]

The security monitoring apparatus of the present invention includes a surveillance camera with a variable direction, two frame memories for reading an image in frame units, two internal sensor memories for reading an image further inside the frame memory, and an internal sensor. A comparison unit that compares pixels between memories and determines that there is an abnormality if the number of different pixels exceeds a set value, and a camera control unit that determines the direction in which the surveillance camera should be moved depending on where in the internal sensor memory the image appears. Since the image recording unit for recording the monitoring image is provided, a desired image can be captured in the screen, and the image showing the abnormality can be accurately recorded.

[Brief description of the drawings]

FIG. 1 is a block diagram of a crime prevention monitoring device according to a first embodiment of the present invention.

FIG. 2 is an operation explanatory diagram of the crime prevention monitoring device according to the first embodiment of the present invention.

FIG. 3 is an operation explanatory diagram of the crime prevention monitoring device according to the first embodiment of the present invention.

FIG. 4 is an operation explanatory diagram of the crime prevention monitoring device according to the first embodiment of the present invention.

FIG. 5 is a block diagram of a crime prevention monitoring device according to a second embodiment of the present invention.

FIG. 6 is an operation explanatory diagram of the crime prevention monitoring device according to the second embodiment of the present invention.

FIG. 7 is an operation explanatory diagram of the crime prevention monitoring device according to the second embodiment of the present invention.

[Explanation of symbols]

 1 Monitoring Camera 4 Frame Memory 5 Frame Memory 8 Internal Sensor Memory 9 Internal Sensor Memory 17 Camera Control Section 19 Image Recording Section

Claims (2)

[Claims] 1. A direction-variable surveillance camera, two frame memories for reading an image in frame units, two internal sensor memories for reading an image further inside the frame memory, and pixels between the internal sensor memories are compared. Then, when the number of different pixels exceeds the set value, it is determined to be abnormal, and a comparison unit,
A crime prevention monitoring device comprising: a camera control unit that determines a direction in which the surveillance camera is moved depending on a position in the internal sensor memory where an image appears, and an image recording unit that records a surveillance image. 2. A zoomable surveillance camera, two frame memories for reading images in frame units, an external sensor memory for reading data other than a certain area in the frame memory, and an external sensor memory. A comparison unit that compares pixels to detect an abnormality, a camera control unit that controls the zoom of the surveillance camera until the number of different pixels is less than a certain set value, and an image recording unit that records the surveillance video are provided. Crime prevention monitoring device.