JP2001126157A - Crime prevention system using moving picture retrieval - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crime prevention system capable of easily detects an image at a time when a dubious person intrudes from image data fetched by a crime prevention camera, etc. SOLUTION: A video file conversion device 2 converts video photographed by a monitoring camera 1 into a video file by a compression format such as an MPEG format. MPEG data are stored in a file recorder 3 such as a hard disk and also and simultaneously are subjected to animation retrieval by an animation retrieving device 4. When there is some change in the monitored image, the photographed image is divided into meaningful frames, their representative frame is outputted, and frame information and a representative frame image are recorded as index data in the recorder 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security system, and more particularly, to a security system capable of easily detecting a video when a suspicious person enters from image data captured by a security camera or the like.

[0002]

2. Description of the Related Art A conventional security system using a surveillance camera or the like is realized by a method of transmitting an image of a surveillance camera to a surveillance center at all times or at regular intervals, or a method of recording an image of a surveillance camera on a video tape or the like. It had been. Japanese Patent Application Laid-Open No. 5-64198 describes a security system in which data captured from a camera is compared with reference data to determine the size of a moving object by a perspective method. Further, Japanese Patent Application Laid-Open No. 9-198577 describes a multimedia security system that starts operation of a surveillance camera based on a detection result of a door sensor.

[0003]

However, when transmitting images from a surveillance camera to the center all the time, a high-speed dedicated line is required, and the monitoring center must constantly monitor the monitor. In addition, when examining a video tape or the like, there is a problem that it takes time to search for a suspicious person approach scene.

The present invention has been made in view of the above situation, and converts and records video of a surveillance camera into image data in a compressed format, searches for video data of the video data, and creates a video index file. It is another object of the present invention to provide a security system that can notify a monitoring center without requiring a dedicated line for transmission when a large difference is detected in a moving image frame.

[0005]

According to a first aspect of the present invention, there is provided a video input means for photographing a monitoring target place, a video conversion means for converting video data captured by the video input means into a video file, and a video conversion means. And a video file recording means for recording the video file generated by the means, and a moving image search means for searching the video file for a moving image.

According to a second aspect of the present invention, in the first aspect of the present invention, when a moving image is searched for by the moving image search means, the moving image is divided into frames, and the divided moving image data is recorded. It is what it was.

According to a third aspect of the present invention, in the second aspect of the present invention, the most characteristic frame among the divided frames is automatically transmitted to an e-mail address registered in advance. It is characterized by having means.

According to a fourth aspect of the present invention, in the second aspect of the present invention, a video of a most characteristic frame among the divided frames is output to a printer at a monitoring place.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A moving image search for detecting a change in environment from image data in a security system using a moving image search according to the present invention will be described. In the moving image search, first, changes in the histogram, texture, contour extraction, and the like of the previous and subsequent frames of the moving image are monitored, and the moving image is divided into meaningful units based on the changes. Next, a detected representative frame in a moving image unit is detected. The information of the divided frames and the representative frames are recorded as index data separately from the moving image data.

Next, the operation of the present invention will be described.
FIG. 1 is a diagram for explaining an outline of a security system using a moving image search according to a first embodiment of the present invention. In the figure, 1 is a surveillance camera, 2 is a video file conversion device, and 3 is a file recording device. Reference numeral 4 denotes a moving image search device. The video captured by the surveillance camera 1 is converted by the video file
It is converted into a video file in a compression format such as the G format. MP
The EG data is stored in a file recording device 3 such as a hard disk, and at the same time, is searched for a moving image by a moving image search device 4. If there is any change in the monitoring image, the captured image is divided into meaningful frames. The frame is output, and the frame information and the representative frame image are recorded in the file recording device 3 as index data. The crime prevention system of the present invention is mainly intended for night offices and the like. Surveillance footage usually has little change,
If there is a change in the monitoring image, there is a great possibility that a suspicious person may enter. When there is no change in the video, frame division is not performed in the moving image search, and frame division is performed only when there is a change in the video. Relatively slow video changes such as dawn are not recognized as meaningful changes, and no frame division is performed here. Thereafter, for example, after the end of the monitoring time, by referring to the generated index data, it is possible to confirm the presence or absence of an abnormality,
Furthermore, it is also possible to immediately reproduce and check the moving image data at the time when there is an abnormality.

A security system using a moving image search according to the second embodiment of the present invention records frame-divided moving image data in a file on a hard disk or the like only when frame division is performed by the moving image search in the first embodiment. The information is recorded in the device 3. This method requires less disk usage.

In a security system using a moving picture search according to a third embodiment of the present invention, in the second embodiment, when a frame is divided by a moving picture search, an e-mail in which a representative frame is registered in advance is used. It is automatically sent to the address. For example, if the registration destination is a monitoring center, if the center automatically expands the attached file (representative frame) when receiving an e-mail from the security system, you can immediately notice an abnormality. Can be.

The security system using a moving image search according to the fourth embodiment of the present invention is different from the second embodiment in that a network printer is installed in a monitoring place in advance and a frame is divided by the moving image search. The video of the representative frame is output to a network printer.

[0014]

According to the security system using the moving image search according to the present invention, the index data of the recorded image is generated by the moving image search. Can be reproduced.

According to the first aspect of the present invention, a moving image search is used in the security system, and abnormalities such as the presence of an intruder can be easily detected.

Advantageous Effects Corresponding to the Invention of Claim 2: Claim 1
In addition to the effect corresponding to the invention of the first aspect, since only the abnormal scene is recorded, the recording medium such as a disc can be saved.

Advantageous effect corresponding to the invention of claim 3: claim 2
In addition to the effect corresponding to the invention, the image of the representative scene at the time of abnormality can be immediately notified through a general Internet line without installing an expensive dedicated line.

Advantageous effect corresponding to the invention of claim 4: claim 2
In addition to the effect corresponding to the invention, the representative scene at the time of abnormality is automatically output to the printer at the monitoring place, so that it is not necessary to constantly monitor the monitor.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an outline of a security system using a moving image search according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Surveillance camera, 2 ... Video file conversion device, 3 ... File recording device, 4 ... Video search device.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 7/18 G06F 15/62 380 H04N 5/91 K F Term (Reference) 5B057 AA19 BA02 DA06 DA15 DC32 5B075 KK35 ND12 NK31 NR03 NR16 NS01 PQ02 PR01 QS03 5C053 FA23 GA11 GB06 GB37 HA29 LA02 LA14 5C054 AA05 CC03 CE14 CH01 DA09 EG00 FC11 GA01 GA05 GD05 HA18 5C084 AA02 AA07 BB11 CC25 DD11 FF07 GG17 GG51GG12GG

Claims (4)

[Claims] 1. An image input means for photographing a place to be monitored, an image conversion means for converting image data captured by the image input means into an image file, and an image for recording an image file generated by the image conversion means A crime prevention system using a moving image search, comprising: a file recording unit; and a moving image search unit that searches a moving image for the video file. 2. The security system according to claim 1, wherein when a moving image is searched for by the moving image search means, the moving image is divided into frames, and the divided moving image data is recorded. Security system using video search. 3. The security system using moving image search according to claim 2, wherein the most characteristic frame among the divided frames is automatically sent to an e-mail address registered in advance. A crime prevention system using a moving image search, which has means for transmitting an e-mail. 4. The security system according to claim 2, wherein a video of a most characteristic frame among the divided frames is output to a printer at a monitoring place. Security system using search.