JPH0410099A - Detector for person acting suspiciously - Google Patents

Abstract

PURPOSE:To always monitor all the persons approaching an institution and to automatically detect a staying or wandering person as a suspiciously acting person by detecting the time series changing component of picture information. CONSTITUTION:An industrical image pickup device 1, storage device 4, video memory 3 to detect and hold the time series changing component of the picture information, and central processing unit 2 are provided. The ITV camera 1 detects the picture information of an area including a monitoring object and the periphery, and a picture processor 6 extracts the human being from the inputted picture information, follows it up, judges whether or not the person stays within the monitoring area for more than fixed time, and outputs the staying person as the suspiciously acting person to a warning device. Thus, the suspiciously acting person can be automatically detected at all times.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a system for detecting suspicious behavior for managing facilities.

(Conventional technology) In conventional technology, the approach of a suspicious person to an important facility was determined either by constant human monitoring of images from an ITV camera, or by direct detection using a switch attached to the door or an infrared sensor. .

(Problems to be Solved by the Invention) In the human monitoring method, the behavior of multiple people on the video is constantly inspected, and those who are behaving suspiciously can be identified from among them. An oversight or error occurred. In addition, the method of direct detection with sensors is vulnerable to methods of destruction such as those who intend to destroy the facility conduct a preliminary investigation in front of the sensor and then throw explosives at the time of the crime.

An object of the present invention is to provide a device that can always automatically detect a person behaving suspiciously.

[Structure of the Invention] (Means for Solving the Problem) The present invention provides an industrial imaging device that is attached to the entrance of a building and photographs the situation as image information, and a device that registers the size and shape of the object in advance. a video memory that detects and holds time-series changes in image information captured by an industrial imaging device; and a video memory that detects and retains time-series changes in image information captured by an industrial imaging device, and images registered in the storage device and the time-series changes stored in this video memory. This is a suspicious-behavior detection device comprising: a central processing unit that compares the person with image information captured by an industrial imaging device, determines that the person is behaving suspiciously, and outputs the result to an alarm device.

(Function) In the suspicious behavior detection device of the present invention, the ITV camera detects image information of an area including the monitored target and its surroundings, and inputs the detected image information to the image processing device, and the image processing device detects image information of the area including the monitored target and its surroundings. In addition to extracting and tracking a person, it is determined whether the person stays in the monitoring area for a certain period of time or more, and the person who stays in the area is flagged as someone whose behavior is suspicious and is output to an alarm system.

(Example) Next, an example of the present invention will be described. Figure 1 shows an ITV camera attached to the entrance of a building that captures the situation as image information, a storage device 4 that registers and stores the size and shape of the object in advance, and a TI camera. A video memory 3 that detects and retains time-series changes in image information, and a video memory 3 that detects and holds time-series changes in image information, the time-series changes stored in the video memory 3, images registered in the storage device 4, and image information captured by the ITV camera 1. The figure shows a suspicious behavior detection device comprising a central processing unit 2 which compares the behavior and determines that the person is behaving suspiciously, and outputs the information to an alarm device.
This is a suspicious behavior detection device consisting of a TV camera 1 and an image processing device 6 that processes images taken by the ITV camera 1.

That is, an ITV camera 1 that is attached to a facility to be protected or its entrance and captures the situation as image information, an image processing device 6 that determines whether a person is behaving suspiciously from the images taken by the ITV camera 1, and a device that detects a person behaving suspiciously. This figure shows the configuration of a suspicious behavior detection device comprising an alarm device 5 that issues an alarm when a person is detected.

FIG. 2 shows a functional flowchart of the present invention, and 7 is a function that scans the time-series change in image information of the ITV camera 1, stores it in the video memory 3, and extracts the amount of change from the difference. , 8 is a function for identifying humans based on size and shape data from among the amount of change. The size and shape data mentioned above is determined by the installation position and magnification of the camera, and is registered in the storage device 4 in advance.

Reference numeral 9 denotes a function for tracking human behavior from the previous scan processing data stored in the video memory 3 and the data processed by the current scan.

1O is a function that integrates the residence time during tracking after human identification, and 11 compares whether the residence time of the detected human has reached a preset time and determines whether the set time has exceeded. This is a function that determines that a person is behaving suspiciously.

In FIG. 1, the ITV camera 1 is also capable of nighttime detection by using an infrared camera.

[Effects of the Invention] According to the present invention, people approaching the facility are constantly monitored, and people who remain in the image or wander around are identified as suspicious persons without issuing an alarm to people who are passing by quickly, such as passersby. Can be detected automatically.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a suspicious behavior detection device showing an embodiment of the present invention, and FIG. 2 is a functional flowchart explanatory diagram of the present invention. 1... ITV camera 2... Central processing unit 3
...Video memory 4...Storage device 6...
Image Processing Device Agent Patent Attorney Nian Oo

Claims (1)

[Claims] An industrial imaging device that is attached to the entrance of a building and photographs the situation as image information; a storage device that registers and stores the size and shape of a subject in advance; and an image taken by the industrial imaging device. A video memory that detects and stores time-series changes in information, and a comparison between the time-series changes stored in this video memory, the images registered in the storage device, and the image information captured by the industrial imaging device. A central processing unit that determines that a person is behaving suspiciously and outputs an output to an alarm device.