JPH1066055A - Video monitor system - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a means for easily detecting a suspect suspected of causing a problem and specifying the recurrence thereof. SOLUTION: A signal of a camera 1 is recorded on a VTR 3.
The moving object such as a person is detected by the moving object detection unit 12 by reproducing by the VTR 11. The suspicious object detection unit 13 tracks the moving object, and sets a moving object having a problematic movement as the suspicious object. The position data of the suspect is superimposed on the video signal of the VTR 11 with a marker and displayed on the monitor 16 to warn the monitor. The observer further examines the reproduced video signal in detail to confirm the suspect. Input unit 1
8 and the control unit 17 determine the outline of the suspect screen, and the suspect data unit 19 extracts the characteristics of the suspect and outputs the extracted data as suspect data. This is input from the suspect data input unit 4 and compared with the moving object detected from the video signal of the television camera 1 by the suspect specifying unit 5 to identify the suspect and to display the video monitor 7
To be displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed in a convenience store to monitor theft semi-automatically.
It relates to a video surveillance system.

[0002]

2. Description of the Related Art In a conventional video surveillance system in a convenience store or the like, a plurality of television cameras are usually installed in a store and the video is transmitted to a VTR such as a time-lapse video.
After recording for about 24 hours, the observer will play back the recorded data at a later date and check if there was a problem such as theft, and if there is a problem, show the related image to the clerk and remember the characteristics In addition, when the related person comes back, it is monitored carefully to take measures such as to prevent the problem from recurring. However, such a monitoring system has the following problems. That is, the VTR recorded by the observer for about 24 hours every day
The task of regenerating and monitoring is a severe task that requires a considerable amount of time and effort even if it is replayed quickly. It is also extremely difficult to identify a problem location, store its characteristics, and determine whether a related person has returned.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a means for easily detecting a suspected suspect having caused a problem and specifying the recurrence thereof. I do.

[0004]

SUMMARY OF THE INVENTION A suspected motion is automatically detected from a reproduced video signal of a VTR or the like and displayed on a reproduced video monitor to notify a monitor of the detection of the suspected object. By doing so, it is unnecessary for the observer to constantly monitor the reproduced image of the VTR. Also, by specifying the suspect area of the image of the reproduced video signal by input from the observer who reconfirmed the suspect, extract the features of the suspect in the area, and output as the feature data of the suspect, After identifying the suspect by comparing the video signal of the TV camera and the characteristic data, the suspect is marked and displayed on the video monitor of the TV camera so that the recurrence of the suspect can be easily detected. I do.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A video signal of a television camera is converted to a VTR.
In a video surveillance system for monitoring the inside of a store, etc., a moving body detecting means for detecting a moving body from a reproduced video signal of the same VTR, etc. The system includes a suspect detecting means for detecting and a warning means for notifying a monitoring person of the detection of the suspect, and warns the monitoring person of the detection of the suspect when detecting a suspected movement.

[0006] As the warning means, a superimposing means for superimposing a marker on a reproduced video monitor for displaying a reproduced video signal is provided. The suspected motion is displayed on the reproduced video monitor to detect the suspected motion. To the observer.

As the warning means, an alarm sounding means is provided, and when the suspect is detected, the alarm is sounded.

[0008] The moving body detecting means specifies and detects a feature of a contour of a person as the moving body.

The moving body detecting means specifies and detects the color of the moving body.

[0010] The suspect detecting means sets a moving body that has exited without passing through the cash register after entering as a suspect.

[0011] An area designating means for designating a suspected area of an image of a reproduced video signal based on an input from a monitor who has reconfirmed the suspected object, and a feature extracting means for extracting features of the suspected object in the area. The feature of the suspect in the area designated by the monitor is extracted and output as feature data of the suspect.

A video monitor for displaying a video signal of the television camera; a feature data storage means for inputting and storing feature data of the suspect; and a video of the suspect by comparing the video signal with the feature data. A suspicious body specifying means for specifying the portion and a superimposing means for superimposing the video portion on the video signal and displaying the same on the video monitor are provided, and the suspicious subject is marked and displayed on the video monitor.

Area designating means for designating a suspected area of an image of a reproduced video signal in response to an input from the monitor, output means for suspected image data for storing and outputting image data of the suspect in the same area; A video monitor for displaying a video signal of a television camera, wherein the suspect image data is input, and the suspect image is divided into a part of the image of the video monitor to display the suspect image.

An area designating means for designating a suspected area of an image of a reproduced video signal in response to an input from the monitor, and an image printer for printing out an image of the suspected area in the same area;
The printout of the image of the suspect identified by the monitor is enabled.

At least one of the suspicious body detecting means and the suspicious body identifying means is constituted by a general-purpose multimedia personal computer.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows (A) a VTR recording / suspicious object identification unit and (B) a VTR reproduction / video of a video surveillance system according to the present invention.
It is a schematic block diagram of a suspected object detection part. A plurality of TV cameras 1, 1, installed in a convenience store
The video signal is periodically switched by the switching circuit 2 for a fixed time, and is recorded on the recording VTR 3 such as a time-lapse video, for example, one screen per second. The recorded video is played back by the playback VTR 11, and the moving body detector 12 detects a moving body such as a person. The detection of the moving object is performed, for example, as follows. A plurality of image memories capable of storing video signals for one screen are prepared, one set of which is used as a background image memory, and the other set is used as a monitoring image memory. In the background image memory, a background image without a moving object for each camera is stored as an initial state. The reproduced image from the VTR sequentially stored in the monitoring image memory is compared with the background image to detect an image part that is not in the background image, that is, an entrance object. One connection of the admission body is integrated, and an individual is specified for each integration. The individual is simply identified from the color components for each unit. Alternatively, the determination is made based on the features of the outline of the person as the moving object. Furthermore, an individual can be specified from montage data obtained by classifying and combining the shapes of the face, eyes, nose, mouth, and body. Then, a moving object is detected from the movement of each individual unit per unit time.

The suspected object detector 13 tracks the detected moving object, and detects a moving object having a problematic movement as the suspected object. The movement that may cause a problem is, for example, a movement of a moving body that has exited without entering the cash register once after entering. Whether or not the visitor has stopped at the cash register is determined based on the position of the cash register in the background image and the movement of the moving object, based on whether or not these distances have become equal to or less than a certain value.

When the suspect is detected, the position data of the suspect is transmitted to the superimposing circuit 15, and a marker indicating the position of the suspect is superimposed on the reproduced video signal from the reproduction VTR 11,
It is displayed on the reproduced video monitor 16 to warn the monitor of the monitor. Also, a signal indicating the detection of the suspect can be transmitted to the alarm 14 including a buzzer or the like, and the alarm 14 can be sounded to notify the detection of the suspect.

When the observer senses the detection of the suspect, VT
Playback video signal by rewinding R, etc.
Check in detail at 6 to see if a problem has occurred.
If a problem is confirmed, a screen on which the suspect is most clearly photographed is selected from the reproduced image, displayed on the reproduced image monitor 16, and furthermore, the control unit is operated by an instruction from the input unit 18 such as a pointing device. At 17, the outline is determined, the characteristics of the suspect are extracted by the suspect data section 19, and output as suspect data. The extraction of the characteristics of the suspect can be performed by extracting the above-described montage data or the like of the suspect. Alternatively, image data of a main part of the suspect, such as a face, can be used. Alternatively, the image data is printed out as a suspect image by the color image printer 20 or the like.

The suspect data from the suspect data section 19 is input to the suspect data input section 4 of the VTR recording / suspective identifying section.
To be transmitted online or by floppy. The suspicious object identification unit 5 stores the suspicious object data, detects a moving object from the video signal from the television camera 1 in the same manner as described above, and extracts data for identifying each moving object, for example, the above-described montage data. I do. The data specifying the moving object is compared with the suspect data. If the correlation is large, it is determined that there is a possibility that the suspect will return, and a marker signal for marking the moving object is transmitted to the superimposing circuit 6. Are superimposed on the video signal of the television camera 1 and displayed on the video monitor 7.

Alternatively, as a simpler system, the above image data is displayed as a so-called picture-in-picture by dividing a part of the screen of a video monitor. The clerk can monitor the video monitor 7 and compare the image of the image data with the screen monitored by the television camera to easily detect the return of the suspect. As a simpler system, the above-mentioned suspect image is pasted to the side of the video monitor 7 or the like, and the suspect image is easily compared with a television camera displayed on the video monitor in the same manner as described above. You can confirm the return of your body.

The above-mentioned moving body detecting section 12 and suspected body detecting section 1
3, the control unit 17, the subject specifying unit 5, and the like can be constructed using a general-purpose multimedia personal computer.

[0023]

The present invention is embodied in the form described above, and has the following effects.

A moving object detecting means for detecting a moving object from a reproduced video signal of a VTR or the like, a detecting means for tracing the moving object and detecting a suspected object whose movement is suspected, Warning means for notifying the monitoring person of a VTR which has recorded a video signal from the monitoring camera by warning the monitoring person of the detection of the suspected object when the suspected movement is detected. Monitoring only needs to be performed when a suspect is detected, and the time and effort for monitoring can be greatly reduced.

As the warning means, there is provided a superimposing means for superimposing a marker on a reproduced video monitor for displaying the reproduced video signal, and displaying a suspected motion on the reproduced video monitor to detect the suspected motion. Is notified to the monitoring person, the detection of the suspect can be visually detected.

As the warning means, an alarm sounding means is provided, and when the suspect is detected, the alarm is sounded so that even if the player is away from the site to be reproduced and monitored, the suspect can be sounded. Detection can be easily detected.

The detecting means for the moving body specifies and detects the characteristics of the outline of the person as the moving body, so that the suspect can be detected and specified relatively easily.

The moving body detecting means can easily detect the suspect by specifying and detecting the color of the moving body.

The suspicious object detection means can determine whether or not the moving object exits without passing through the cash register after entry as the suspicious object by simple means.

[0030] An area designating means for designating a suspected area of an image of a reproduced video signal based on an input from a monitor who has reconfirmed the suspected object, and a feature extracting means for extracting features of the suspected object in the same area, By extracting the characteristics of the suspect in the area designated by the monitor and outputting the extracted data as characteristic data of the suspect, the suspect can be easily confirmed.

An image monitor for displaying an image signal of the television camera, a characteristic data storage means for inputting and storing characteristic data of the suspect, and an image of the suspect by comparing the image signal with the characteristic data. A suspect identifying means for identifying the part and a superimposing means for superimposing the same video part on the same video signal and displaying the same on the video monitor are provided. The return can be automatically identified.

Area designating means for designating a suspected area of an image of a reproduced video signal in response to an input from the monitor, output means for suspected image data for storing and outputting image data of the suspect in the same area; A video monitor for displaying a video signal of a television camera, wherein the suspect image data is input, and the suspect image is divided into a part of the image of the video monitor to display the suspect image. Then, the return of the suspect can be confirmed.

An area designating means for designating a suspected area of an image of a reproduced video signal by an input from the monitor, and an image printer for printing out an image of the suspect in the same area, wherein the suspect identified by the monitor is specified. By printing out the image of (1), means for easily confirming the return of the suspect can be obtained.

By configuring at least one of the suspect detecting means and the suspect identifying means by a general-purpose multimedia personal computer, a system meeting the object of the present invention can be constructed at low cost.

[Brief description of the drawings]

FIG. 1 (A) VTR of a video surveillance system according to the present invention
FIG. 4 is a schematic block diagram of a recording / suspension identifying unit and (B) a VTR playback / suspection detecting unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Television camera 2 Switching circuit 3 Recording VTR 4 Suspect data input part 5 Suspect identifying part 6 Superposition circuit 7 Video monitor 11 Reproduction VTR 12 Moving body detection part 13 Suspect detection part 14 Alarm part 15 Superposition part 16 Reproduction video monitor 17 Control unit 18 Input unit 19 Suspect data unit 20 Image printer

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical indication location H04N 5/93 9185-5C H04N 11/04 B 11/04 5/93 E

Claims (11)

[Claims] 1. A video surveillance system for recording a video signal of a television camera on a VTR or the like and monitoring the inside of a store or the like, comprising: a mobile body detection means for detecting a mobile body from a reproduced video signal of the VTR or the like; And a warning means for notifying a monitoring person of the detection of the suspected object when the suspected motion is detected, and detecting the suspected object when the suspected motion is detected. A video surveillance system characterized by alerting a surveillant of the detection of an image. 2. The apparatus according to claim 1, further comprising: a superimposing unit configured to superimpose a marker on a reproduced video monitor for displaying the reproduced video signal, displaying the suspected motion on the reproduced video monitor. A video surveillance system characterized by notifying a surveillant of the detection of an image. 3. The video surveillance system according to claim 1, further comprising an alarm sounding means as the warning means, and sounding the alarm when the suspect is detected. 4. The video surveillance system according to claim 1, wherein said moving body detecting means specifies and detects a feature of a contour of a person as the moving body. 5. The video surveillance system according to claim 1, wherein said moving body detection means specifies and detects the color of the moving body. 6. The video surveillance system according to claim 1, wherein said suspected object detecting means sets a moving object that has exited without entering a cash register after entering as an suspected object. 7. An area designating means for designating a suspected area of an image of a reproduced video signal based on an input from a monitor who has reconfirmed the suspected area, and a feature extracting means for extracting characteristics of the suspected area in the same. 2. The video surveillance system according to claim 1, further comprising: extracting a feature of the suspect in an area designated by the monitor and outputting the extracted feature data as feature data of the suspect. 8. A video monitor for displaying a video signal of the television camera, feature data storage means for inputting and storing feature data of the suspect, and comparing the video signal with the feature data to match the suspect. A suspicious body identifying means for identifying the video part, and a superimposing means for superimposing the same video part on the same video signal and displaying the same on a video monitor, wherein the suspect is marked and displayed on the same video monitor. The video surveillance system according to claim 7. 9. An area designating means for designating a suspected area of an image of a reproduced video signal in response to an input from the monitor, and a means for outputting suspected image data for storing and outputting image data of the suspect in the same area. And a video monitor that displays a video signal of the television camera, and displays the suspect image by inputting the suspect image data and dividing the suspect image into a part of the image of the monitor. 2. The method according to claim 1, wherein
The video surveillance system as described. 10. An image processing apparatus comprising: an area designating unit that designates a suspected area of an image of a reproduced video signal based on an input from the monitor; and an image printer that prints out an image of the suspect in the same area. 2. The video surveillance system according to claim 1, wherein an image of the suspect is printed out. 11. The video surveillance system according to claim 1, wherein at least one of the suspect detection means and the suspect identification means is constituted by a general-purpose multimedia personal computer.