JP2007221693A - Video monitor system and video concentrator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video monitor system and video concentrator which display a video of an important monitoring area where there is high possibility of a suspicious person or a person making an illegal behavior being photographed. <P>SOLUTION: The video concentrator 3 has a priority update part 17 and a video transmission control part 18. The priority update part 17 performs priority update processing of specifying divided areas where store clerks M1 and M2 make a tour of inspection presently, and giving higher priority to monitor cameras 1 which photograph divided areas where the store clerks M1 and M2 do not make the tour of inspection presently than priority to monitor cameras 1 which photograph the divided areas where the store clerks M1 and M2 make the tour of inspection presently. The video transmission control part 18 selects a video of an object to be transferred from among the videos of the divided areas photographed by the two or more monitor cameras 1 with the priority of the two or more monitor cameras 1 as reference, and transfers the selected video image. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a video monitoring system and a video concentrator that capture images of a plurality of monitoring areas and transmit and display videos of the plurality of monitoring areas to a display terminal.

In conventional video surveillance systems, the number of surveillance cameras and sensors installed is increasing due to the need to monitor a wide area.
As a result, images taken by a large number of surveillance cameras are displayed. However, since the surveillance personnel need to monitor a large number of images, the monitoring work load on the surveillance personnel increases and important images are displayed. It can lead to overlooked situations. In addition, since the amount of video data transmitted to the monitoring center increases, the network cost also increases.

In view of this, a video monitoring system has been developed that assigns priority to videos taken by a plurality of surveillance cameras and transmits only videos with high priority (see, for example, Patent Document 1).
In addition, a video monitoring system that controls a split display screen of a display terminal according to video priority has been developed (see, for example, Patent Documents 2 and 3).
As a determination method for determining the priority of videos taken by a plurality of surveillance cameras, for example, a motion detection process is performed on videos taken by surveillance cameras to detect the presence or absence of motion, and the priority is determined based on the presence or absence of motion. Techniques for determining are disclosed in Patent Documents 2 and 4 below.

Japanese Patent Laid-Open No. 11-164289 (paragraph numbers [0033] to [0034], FIG. 1) JP-A-10-108168 (paragraph numbers [0006] to [0009], FIG. 1) JP-A-10-191307 (paragraph numbers [0018] to [0021], FIG. 1) JP 2000-333159 A (paragraph numbers [0015] to [0018], FIG. 2)

Since the conventional video surveillance system is configured as described above, when the priority of a video in which a subject that is moving violently is increased, the video in which the subject that is moving violently is shot. Although it is transmitted preferentially (Patent Documents 2 and 4), the video image of such a subject is not always an important video image to be monitored, and the video image of a really important video image to be monitored is displayed. There was a problem that sometimes disappeared.
For example, when a surveillance camera is shooting an area where a security guard or a store clerk is traveling, a high priority is given to the video shot by the surveillance camera by detecting the movement of the security guard or the store clerk. However, in surveillance cameras, it is more necessary to monitor areas where there are no guards or clerk than areas where guards or clerk exist (in areas where guards or clerk exist) It is possible to detect a suspicious person or a fraudulent person without monitoring a video taken by a surveillance camera.) A suspicious person or a fraudulent act in an area where no security guard or a clerk exists. May be overlooked.
In addition, when monitoring an area where people and objects frequently move, the priority of the video taken by most surveillance cameras becomes high. In this case, it becomes difficult to select a video to be monitored, and eventually, it is necessary for the monitor to monitor many videos.

  The present invention has been made to solve the above-described problems, and a video surveillance system and video capable of displaying a video of an important surveillance area in which a suspicious person or a fraudulent person is likely to be photographed. The purpose is to obtain a concentrator.

  The video surveillance system according to the present invention specifies a monitoring area that the supervisor is currently patroling, and determines a monitoring area that the supervisor is not currently patrol based on the priority of the surveillance camera that images the surveillance area. Priority update means for performing priority update processing for increasing the priority of the surveillance camera being photographed, and the video of the surveillance area captured by the surveillance cameras based on the priority of the surveillance cameras A video concentrator having video transfer means for selecting a video to be transferred from the video and transferring the video is provided.

  According to the present invention, the monitoring area currently being visited by the monitoring person is identified, and the monitoring area that is not currently being visited by the monitoring person is photographed based on the priority of the monitoring camera that is shooting the monitoring area. Priority update means for performing priority update processing for increasing the priority of existing surveillance cameras, and transfer targets from videos of surveillance areas captured by multiple surveillance cameras based on the priorities of multiple surveillance cameras Since the video concentrator is provided with the video transfer means for selecting the video and transferring the video, the video of the important surveillance area where the suspicious person or the fraudulent person is likely to be photographed. There is an effect that can be displayed.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a video surveillance system according to Embodiment 1 of the present invention. In the figure, surveillance cameras 1-1 to 1-N are installed in a surveillance area A and take pictures of the surveillance area A.
In the example of FIG. 2, the monitoring area A is divided into a mesh shape, and the monitoring cameras 1-1 to 1-16 include 16 divided areas A-2 to A-5, A-8 to A-11, A. It is installed at -14 to A-17 and A-20 to A-23, and images of individual divided areas are taken.
B1 and B2 are walls between the divided areas.

  The video concentrator 3 is connected to the monitoring cameras 1-1 to 1-N via the network 2. For example, a divided area (monitoring area) in which a monitoring person M such as a security guard or a salesclerk currently circulates is used. Specifically, priority update processing is performed to increase the priority of the monitoring camera 1 that is shooting a divided area that is not currently patroled by the monitoring person from the priority of the monitoring camera 1 that is shooting the divided area. At the same time, on the basis of the priority of the monitoring cameras 1-1 to 1-N, the transfer target image is selected from the divided area images captured by the monitoring cameras 1-1 to 1-N, Perform the transfer process.

The priority analysis device 5 is connected to the video concentrating device 3 via the network 4 and receives a priority setting for the video captured by the monitoring cameras 1-1 to 1-N from the monitoring person M, and the priority is set. A process for generating update information to be used when updating the priority of the monitoring cameras 1-1 to 1-N is executed from the setting contents of the degrees and the traveling situation of each divided area by the monitoring person M.
Although details will be described later, when the video concentrator 3 updates the priority of the monitoring cameras 1-1 to 1-N, the monitoring cameras 1-1 to 1-1 are updated according to the update information generated by the priority analysis device 5. Update the priority of 1-N.

The monitoring center 6 displays current or past images taken by the monitoring cameras 1-1 to 1-N, information on divided areas circulated by the supervisor M (information indicating the circulation status of individual divided areas by the supervisor M). ) And when the monitoring person M uses the priority analysis device 5 to set the priority for the images taken by the monitoring cameras 1-1 to 1-N, An important divided area (for example, a divided area where a suspicious person has been discovered in the past) that is judged to be highly necessary to be monitored is determined.
The display terminal 7 is connected to the video concentrator 3 via the network 4. When the video transferred by the video concentrator 3 is received, processing for displaying the video is performed.

The video receiver 11 of the video concentrator 3 performs a process of receiving videos of individual divided areas photographed by the monitoring cameras 1-1 to 1-N. Note that the video receiver 11 constitutes a video receiver.
The area information DB 12 of the video concentrator 3 stores area information related to each divided area (for example, coordinates of an area occupied by the divided area and identification information of sensors installed in the divided area). Memory.
The area information management unit 13 of the video concentrator 3 manages the area information stored in the area information DB 12 and outputs the area information stored in the area information DB 12 to the traveling area specifying unit 14.

The circulating area specifying unit 14 of the video concentrator 3 is a sensor installed in each divided area (for example, a human sensor that detects the presence of a supervisor, the presence of a supervisor by image processing the video of the surveillance camera 1). From the sensor information of the image processing sensor that detects the image and the tag reader that receives the radio wave transmitted from the wireless tag held by the monitoring person and the area information output from the area information management unit 13, the monitoring person M currently circulates. The divided area is identified, and cyclic information indicating the divided area is output to the priority update unit 17.
The update information receiving unit 15 of the video concentrator 3 receives the update information transmitted from the priority analysis device 5 and stores the update information in the update information DB 16 for management.
The update information DB 16 of the video concentrator 3 is a memory for storing update information.

The priority update unit 17 of the video concentrator 3 captures a divided area that is not currently visited by the supervisor, based on the priority of the surveillance camera 1 that is photographing the divided area currently being visited by the monitor. The priority of the monitoring cameras 1-1 to 1-N is updated according to the tour information output from the tour area specifying unit 14 and the update information stored in the update information DB 16 so that the priority of the monitor camera 1 is increased. Perform priority update processing.
The area information DB 12, the area information management unit 13, the traveling area specifying unit 14, the update information receiving unit 15, the update information DB 16, and the priority update unit 17 constitute a priority update unit.
The video transmission control unit 18 of the video concentrator 3 receives the individual divided areas received by the video reception unit 11 based on the priority of the monitoring cameras 1-1 to 1-N updated by the priority update unit 17. A video to be transferred is selected from the videos and the video is transferred to the display terminal 7. Note that the video transmission control unit 18 constitutes a video transfer means.

The priority learning unit 21 of the priority analysis apparatus 5 accepts the priority setting for the video captured by the monitoring cameras 1-1 to 1-N from the monitoring person M, and the setting contents of the priority and the individual by the monitoring person M A process for generating update information to be used when updating the priority of the monitoring cameras 1-1 to 1-N is performed based on the traveling status of the divided areas.
The update information transmission unit 22 of the priority analysis device 5 performs a process of transmitting the update information generated by the priority learning unit 21 to the video concentrating device 3.

When the video playback unit 31 of the display terminal 7 receives the video transferred by the video concentrator 3, the video playback unit 31 performs processing for displaying the video.
The video playback unit 31 has a function of dividing a display area of the screen to display a plurality of videos at the same time and setting a video display position according to priority.
The request unit 32 of the display terminal 7 performs a process for transmitting a request for designating a monitoring target divided area.
FIG. 3 is a flowchart showing the priority update processing of the video concentrator of the video surveillance system according to Embodiment 1 of the present invention, and FIG. 4 shows the priority analyzer of the video surveillance system according to Embodiment 1 of the present invention. It is a flowchart which shows the processing content.
FIG. 5 is a flowchart showing video transfer processing of the video concentrator of the video monitoring system according to Embodiment 1 of the present invention.

Next, the operation will be described.
In the first embodiment, a video monitoring system for a parlor will be described as an example.
In parlors, the shopkeepers try to find a thief who steals coins / balls and valuables from customers who are enthusiastic about the game, and a Goto who takes a huge amount of coins and balls at once by improperly modifying the game console. We perform patrol monitoring and video surveillance with surveillance cameras.
In recent parlors, the number of large-sized stores has increased and the number of installed surveillance cameras has increased, so the number of camera images that must be monitored has increased, and the burden on the surveillance staff has increased.

Also, various sensors and the like are installed on the game table in order to prevent illegal acts by Goto. However, the current situation is that Goto is fraudulently working with these sensors.
As the number of game consoles and sensors increases, sensor alarms are frequently reported, and along with this, the number of sensor alarm misreports (which are not fraudulent and do not need to be monitored in particular) Increasingly, the burden on observers is increasing.
In the first embodiment, it is possible to efficiently find a Goto or a thief without causing an increase in the burden on the supervisor.

In the example of FIG. 2, the parlor hole is the monitoring area A, and the monitoring area A is divided into a mesh shape.
Of the 24 divided areas A-1 to A-24, divided areas A-2 to A-5, A-8 to A-11, A-14 to A-17, A-20 to A-23. Are provided with surveillance cameras 1-5 to 1-16.
In the example of FIG. 2, two store clerks M1 and M2 circulate in the hall as monitoring personnel. In this example, there are two clerk, but the number of clerks is not limited.

In order to be able to detect where the two salesclerks M1 and M2 are currently traveling around, for example, by attaching a wireless tag to the uniform of each salesclerk M1 and M2 A tag reader that receives radio waves transmitted from the wireless tag is installed in each of the divided areas A-1 to A-24.
In this case, if the tag reader that has received the radio wave transmitted from the wireless tag is specified, it is possible to detect the divided area in which the clerk M1 and M2 are traveling.

The traveling area specifying unit 14 of the video concentrator 3 acquires area information regarding each of the divided areas A-1 to A-24 from the area information management unit 13 in advance.
When any tag reader installed in each divided area A-1 to A-24 receives the radio wave of the wireless tag, the traveling area specifying unit 14, for example, area information regarding the divided areas A-1 to A-24. Referring to the identification information of the tag reader (sensor) included in the tag, it is identified where the tag reader installed in the divided area has received the radio wave of the wireless tag.
In the example of FIG. 2, the clerk M1 exists in the divided area A-7, and the clerk M2 exists in the divided area A-15. Therefore, the tag readers installed in the divided area A-7 and the divided area A-15 are wireless. Receive radio waves from the tag.

Therefore, in the example of FIG. 2, the traveling area specifying unit 14 recognizes that the clerk M1 circulates the divided area A-7 and the clerk M2 circulates the divided area A-15.
In this case, since there are one store clerk in each of the divided area A-7 and the divided area A-15, the traveling area specifying unit 14 sets the traveling information related to the divided area A-7 and the divided area A-15 to “1”. And the traveling information related to other divided areas where no store clerk exists is set to “0”.
When two salesclerks M1 and M2 exist in the divided area A-7, the traveling information related to the divided area A-7 is set to “2”.
When the traveling area specifying unit 14 sets the traveling information related to the divided areas A-1 to A-24 as described above, the traveling area specifying unit 14 sends the traveling information related to the divided areas A-1 to A-24 to the priority update unit 17. Output (step ST1 in FIG. 3).

Here, the travel information is set according to the number of salesclerks present in the divided areas. However, the traveling direction and traveling speed of the clerks M1 and M2 are specified, and the traveling direction and traveling speed of the clerks M1 and M2 are determined. Considering this, the traveling information related to the divided areas A-1 to A-24 may be set.
Specifically, the traveling direction of the clerk M1, M2 is determined from the divided area where the clerk M1, M2 currently exists and the previously existing divided area, and the clerk M1, M2 existed last time. The arrival time from the divided area to the currently existing divided area is measured, and the traveling speed of the clerk M1, M2 is calculated.

In the first embodiment, for convenience of explanation, if the traveling speed of the clerk M is slower than the reference speed in advance, the division area located in the traveling direction of the clerk is set to “0.2” (“1” or less). , Which may be a value other than “0.2”), and if the traveling speed of the clerk M is faster than the reference speed, a value of “0.4” (“1” or less) is displayed in the divided area located in the traveling direction of the clerk. If this is the case, a value other than “0.4” may be added, and “0.2” (or “0.2” if the value is “1” or less) is added to the previous divided area of the divided area. It is assumed that an agreement is made to add a value other than.
In the example of FIG. 2, since the clerk M1 is moving in the direction from the divided area A-7 to the divided area A-13, if the calculation result that the traveling speed of the clerk M1 is slower than the reference speed is obtained, “0.2” is added to the cyclic information “0” related to the area A-13.
Similarly, since the clerk M2 is traveling in the direction from the divided area A-15 to the divided area A-14, if a calculation result is obtained that the traveling speed of the clerk M2 is faster than the reference speed, the divided area A- “0.4” is added to the cyclic information “0” related to 14, and “0.2” is added to the cyclic information “0.2” related to the divided area A-13.

Thereby, the traveling information related to the divided areas A-1 to A-24 is set as follows.
・ Division area A-7 → 1
・ Division area A-13 → 0.2 + 0.2 = 0.4
・ Division area A-14 → 0.4
・ Division area A-15 → 1
・ Other division areas → 0

On the other hand, the priority analysis device 5 is connected to the video concentrating device 3 via the network 4 and may be a monitor (the monitor may be a store clerk who goes around the hall, or specially monitors the video of the monitoring camera. The priority setting for the video captured by the monitoring cameras 1-1 to 1-N is received from the monitoring camera 1-1 to 1-N, and the setting contents of the priority and the individual divided areas A-1 to A by the clerk M1 and M2 are received. Based on the circulation status of -24, the video concentrator 3 performs a process of generating update information used when updating the priority of the monitoring cameras 1-1 to 1-N.
Specifically, it is as follows.

The priority learning unit 21 of the priority analysis device 5 acquires video data Vi (k) (current or past video captured by the monitoring cameras 1-1 to 1-N) stored in the monitoring center 6. At the same time, information on the divided areas circulated by the clerk M1, M2 (circulation information Xj relating to the divided areas A-1 to A-24 in the present or the past as information indicating the circulatory situation of each divided area by the clerk M1, M2) (K)) is acquired (step ST21 in FIG. 4).
Then, the priority learning unit 21 reproduces the current or past video, displays the traveling status of the individual divided areas A-1 to A-24 by the store clerk M1, M2, and displays the monitoring cameras 1-1 to 1. A message or the like that prompts the supervisor to set the priority for the video shot by -N is displayed (steps ST22 to ST23).

The surveillance staff judges the video of important divided areas (for example, divided areas where suspicious persons have been discovered in the past) that are highly necessary to be monitored based on the current or past video and the circulation status of each divided area. By operating the priority analysis device 5 (using a man-machine interface such as a keyboard or a mouse (not shown)), a high priority is set for an image of an important divided area, and an image of an unimportant divided area is set. A low priority is set (steps ST24 to ST26).
When setting the priority, the priority is set by selecting only the video of the important divided area that is highly necessary to be monitored. By default, the video of the divided area that is not selected is set to low priority. You may make it set a degree.

The priority learning unit 21 of the priority analysis device 5 sets the priority Yi (k) for the video captured by the monitoring cameras 1-1 to 1-N, and receives the priority Yi (k). Multiple regression analysis is performed using explanatory variables and cyclic information Xj (k) related to divided areas A-1 to A-24 as explanatory variables, and regression coefficients Bi (j) of surveillance cameras 1-1 to 1-N are obtained. Calculate (steps ST27 to ST29).
That is, the priority learning unit 21 calculates the regression coefficient Bi (j) of the monitoring cameras 1-1 to 1-N by solving the following S simultaneous polynomials.
Yi (k) = Bi (0) + Bi (1) × X1 (k) + Bi (2) × X2 (k)
+ ... + Bi (M) × XM (k) (1)
However, k = 1 to S.

When the priority learning unit 21 calculates the regression coefficient Bi (j) of the monitoring cameras 1-1 to 1-N, the update information transmission unit 22 of the priority analysis device 5 uses the regression coefficient Bi (j) as update information. It transmits to the video concentrator 3 (step ST30).
The update information receiving unit 15 of the video concentrator 3 receives the update information transmitted from the priority analysis device 5 and stores the update information in the update information DB 16 for management.

The priority update unit 17 of the video concentrator 3 divides the divided areas where the clerks M1 and M2 are not currently traveling based on the priority of the surveillance camera 1 that is photographing the divided areas currently being visited by the clerks M1 and M2. Of the surveillance cameras 1-1 to 1-N in accordance with the tour information output from the tour area specifying unit 14 and the update information stored in the update information DB 16 Update priority.
Specifically, it is as follows.

6 is an explanatory diagram showing a session table managed by the priority update unit 17 of the video concentrator 3. FIG. 7 shows a transmission table managed by the priority update unit 17 of the video concentrator 3. It is explanatory drawing shown.
The session table in FIG. 6 is a table that manages the transfer state and priority of the video captured by the monitoring cameras 1-1 to 1-N, and the transmission table in FIG. 7 corresponds to the priority of the video. It is a table for managing video transmission destinations.

In FIG. 6, when there are N surveillance cameras, numbers 1 to N are assigned to each surveillance camera, and these numbers are handled as surveillance camera numbers.
Further, in FIG. 6, a state of “transferring” is assigned as a transfer state to a monitoring camera that is shooting a video that needs to be transferred to the display terminal 7 as a video to be monitored, and is transferred to the display terminal 7. A state of “transfer interrupted” is assigned as a transfer state to a monitoring camera that is shooting an unnecessary video.
Moreover, the priority of FIG. 6 is the priority of the monitoring cameras 1-1 to 1-N updated based on the update information transmitted from the priority analysis device 5 by the priority update unit 17 of the video concentrator 3. It is.
The transmission destination in the transmission table of FIG. 7 indicates the IP address and port number of the display terminal 7 as the transmission destination of the video imaged by the monitoring cameras with priority levels 1 to V.
Since the number of video transmission destinations is the same as the number of screens that the display terminal 7 can display at the same time, in FIG. 7, the top V priorities are managed.

The priority update unit 17 of the video concentrator 3 acquires the cyclic information Xj related to the divided areas A-1 to A-24 from the cyclic area specifying unit 14, and the priority analysis unit 5 generates the cyclic information Xj from the update information receiving unit 15. When the updated information Bi (j) is acquired (steps ST2 to ST3 in FIG. 3), the priority Yi of the monitoring camera i is obtained by solving the following equation (2) (step ST4).
Yi = Bi (0) + Bi (1) × X1 + Bi (2) × X2
+ ... + Bi (M) × XM (2)

When the priority updating unit 17 of the video concentrator 3 obtains the priority Yi of all the monitoring cameras 1-1 to 1-N (steps ST5 to ST6), the monitoring camera 1-1 is in descending order of the priority Yi. 1 to N are sorted (step ST7), and the order e is added to the priority YYe of the surveillance cameras after sorting (step ST8). However, e = 1 to N.
Then, the priority update unit 17 sets the priority Pi of the monitoring camera number i corresponding to the monitoring camera of the priority YYe in the session table of FIG. Pi is updated (step ST9).

When the priority update unit 17 of the video concentrator 3 updates the priority Pi of the session table in FIG. 6, the priority eYe of the surveillance cameras has the order e of the display screen number V (the display terminal 7 If the number of screens that can be displayed at the same time is exceeded (step ST10), the transfer state Ti of the monitoring camera number i corresponding to the monitoring camera of the priority YYe is set to “transfer interruption” (step ST11).
On the other hand, if the order e of the priority YYe of the monitoring camera does not exceed the display screen number V of the display terminal 7 (step ST10), the transfer state Ti of the monitoring camera number i corresponding to the monitoring camera of the priority YYe is set to “ “Transferring” is set (step ST12).
In this example, the priority update unit 17 sets the transfer state Ti to “in transfer” by the number of display screens V of the display terminal 7. However, the priority Yi of the monitoring cameras 1-1 to 1-N is set. Compared with a predetermined threshold value, the transfer status Ti of the monitoring camera whose priority Yi exceeds the threshold value may be set to “during transfer”.

  When the priority update unit 17 of the video concentrator 3 sets the priority and transfer state in the session table for all the monitoring cameras 1-1 to 1-N, the series of priority update processing ends ( Steps ST13 to ST15).

The surveillance cameras 1-1 to 1-16 are installed in 16 divided areas A-2 to A-5, A-8 to A-11, A-14 to A-17, A-20 to A-23. When the video of each divided area is captured, the video (video data) of each divided area is distributed to the video concentrator 3 via the network 2.
The video receiver 11 of the video concentrator 3 receives the video (video data) of each divided area taken by the monitoring cameras 1-1 to 1-N (step ST31 in FIG. 5).

The video transmission control unit 18 of the video concentrator 3 receives the priority area update unit 17 when the video reception unit 11 receives the video (video data) of each divided area captured by the monitoring cameras 1-1 to 1-N. Based on the priority of the surveillance cameras 1-1 to 1-N updated by the above, the video to be transferred is selected from the videos of the individual divided areas received by the video receiver 11, and the video is displayed. Transfer to terminal 7.
Specifically, it is as follows.

The video transmission controller 18 of the video concentrator 3 acquires the transfer state Ti of the monitoring camera i that is capturing the video received by the video receiver 11 from the session table of FIG. 6 (step ST32).
If the transfer state Ti of the monitoring camera i is “transfer interrupted”, the video transmission control unit 18 of the video concentrator 3 does not perform the transfer process of the video of the monitoring camera i, but transfers the monitoring camera i. If the status Ti is “transferring” (step ST33), the priority Pi of the monitoring camera i is acquired from the session table of FIG. 6 (step ST34).

If the priority Pi of the monitoring camera i exceeds the display screen number V of the display terminal 7, the video transmission control unit 18 of the video concentrator 3 does not perform the video transfer process of the monitoring camera i. If the priority Pi of the monitoring camera i does not exceed the display screen number V of the display terminal 7 (step ST35), the transmission destination Di corresponding to the priority Pi is acquired from the transmission table of FIG. 7 (step ST36).
When the video transmission control unit 18 of the video concentrator 3 acquires the transmission destination Di corresponding to the priority Pi, it transfers the video of the monitoring camera i to the display terminal 7 related to the transmission destination Di (steps ST37 to ST38). .

When the video playback unit 31 of the display terminal 7 receives the video transferred from the video concentrator 3, the video playback unit 31 displays the video on the screen corresponding to the transmission destination Di.
Here, it is assumed that the video playback unit 31 divides the display area of the screen and displays a plurality of videos at the same time. However, the display terminal 7 is prepared for the number of display screens V, and the transmission destination Di is set. The corresponding display terminal 7 may display the video.

  As is apparent from the above, according to the first embodiment, the salesclerk M1, M2 identifies the divided area that is currently circulating, and the salesclerk determines the priority of the surveillance camera 1 that is shooting the divided area. A priority update unit 17 that performs a priority update process for increasing the priority of the monitoring camera 1 that is shooting a divided area where M1 and M2 are not currently circulating, and the priority of the plurality of monitoring cameras 1 as a reference. Since the video concentrator 3 having the video transmission control unit 18 for selecting the video to be transferred from the video of the divided areas photographed by the plurality of surveillance cameras 1 and transferring the video is provided. It is possible to display an image of an important divided area in which there is a high possibility that Goto and the thief are filmed.

  According to the first embodiment, the priority setting for the video of the divided area photographed by the plurality of monitoring cameras 1 is received, and the setting contents of the priority and the traveling situation of the individual divided areas by the clerk M1 and M2 are received. The priority analysis device 5 for generating update information used when updating the priority of the plurality of monitoring cameras 1 is provided, and the priority update unit 17 of the video concentrator 3 is generated by the priority analysis device 5. Since the priorities of the plurality of monitoring cameras 1 are updated according to the update information, for example, there is an effect that it is possible to focus on the divided areas where a suspicious person has been discovered in the past and the divided areas of blind spots. .

  According to the first embodiment, in addition to the divided areas currently being visited by the clerk M1, M2, the traveling direction and traveling speed of the clerk M1, M2 are specified, and the traveling direction and traveling speed of the clerk M1, M2 are determined. In consideration of this, since the priority of the plurality of surveillance cameras 1 is configured to be updated, there is an effect that it is possible to increase the detection probability of the Goto and the thief.

  According to the first embodiment, a monitoring camera 1 whose priority is higher than a preset threshold value is selected from a plurality of monitoring cameras 1, and a video of a divided area captured by the monitoring camera 1 is displayed on the display terminal 7. Therefore, even when the number of display screens of the display terminal 7 is limited, it is possible to display an image of an important divided area in which there is a high possibility that the Goto and the thief are filmed. There is an effect.

  According to the first embodiment, the priority of the plurality of surveillance cameras 1 is compared, and the video of the surveillance area captured by the surveillance camera 1 having the higher priority is preferentially transferred. Even when the number of display screens of the terminal 7 is limited, it is possible to display an image of an important divided area in which there is a high possibility that Goto and the thief have been photographed.

Embodiment 2. FIG.
In the first embodiment, the priority update unit 17 of the video concentrator 3 updates the priority of the plurality of monitoring cameras 1 according to the update information generated by the priority analyzer 5. The terminal 7 may receive the setting of the divided area to be monitored, and the priority update unit 17 of the video concentrator 3 may update the priority of the monitoring camera 1 that is shooting the divided area to the maximum value. .
Specifically, it is as follows.

The request unit 32 of the display terminal 7 performs a process of accepting the designation of the divided area to be monitored from the monitoring person, and when the monitoring person designates the divided area to be monitored, a request for setting the divided area as the monitoring object. Is transmitted to the video concentrator 3.
When the update information receiving unit 15 receives a request from the display terminal 7, the priority update unit 17 of the video concentrator 3 updates the priority of the monitoring camera 1 that captures the divided area to the maximum value.
That is, the priority update unit 17 sets the priority YYe related to the monitoring camera 1 in the session table of FIG. 6 to “1”.
As a result, the video of the divided area designated by the monitor is displayed on the display terminal 7.

The request unit 32 of the display terminal 7 transmits a request to that effect to the video concentrator 3 when the monitor sets to cancel the designation of the divided area to be monitored.
When the update information receiving unit 15 receives a request from the display terminal 7, the priority update unit 17 of the video concentrator 3 captures the priority of the monitoring camera 1 that is capturing the divided area in other divided areas. The monitoring camera 1 is updated in the same manner as the priority of the monitoring camera 1 being used.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the image | video monitoring system by Embodiment 1 of this invention. It is explanatory drawing which shows the correspondence of the monitoring cameras 1-1 to 1-16 and division area A-1 to A-24. It is a flowchart which shows the priority update process of the video concentrator of the video surveillance system by Embodiment 1 of this invention. It is a flowchart which shows the processing content of the priority analysis apparatus of the video surveillance system by Embodiment 1 of this invention. It is a flowchart which shows the video transmission process of the video concentrating device of the video surveillance system by Embodiment 1 of this invention. It is explanatory drawing which shows the session table managed by the priority update part of a video concentrator. It is explanatory drawing which shows the transmission table managed by the priority update part of a video concentrator.

Explanation of symbols

  1-1 to 1-N surveillance camera, A surveillance area, A-1 to A-24 division area, B1, B2 wall, M1, M2 clerk (monitorer), 2 networks, 3 video concentrators, 4 networks, 5 priority analysis device, 6 monitoring center, 7 display terminal, 11 video receiving unit (video receiving unit), 12 area information DB (priority updating unit), 13 area information management unit (priority updating unit), 14 traveling area Specific part (priority update means), 15 update information reception part (priority update means), 16 update information DB (priority update means), 17 priority update part (priority update means), 18 video transmission control part ( Video transfer means), 21 priority learning section, 22 update information transmission section, 31 video playback section, 32 request section.

Claims (9)

  The surveillance camera is currently patroling according to the priority of the surveillance camera that is shooting the surveillance area by identifying multiple surveillance cameras that photograph each surveillance area and the surveillance area that the surveillance person is currently visiting. A priority updating unit that performs a priority update process for increasing the priority of a surveillance camera that is photographing a non-surveillance area, and is photographed by the plurality of surveillance cameras based on the priority of the plurality of surveillance cameras. A video concentrator having video transfer means for selecting the video to be transferred from the video in the monitored area and transferring the video; and a display terminal for displaying the video transferred by the video concentrator. Equipped video surveillance system.   A priority analysis device is provided for receiving priority settings for video in a monitoring area captured by a plurality of surveillance cameras, and the priority setting content received by the priority analysis unit of the video concentrator is received by the priority analysis device. The video surveillance system according to claim 1, wherein the priority of the plurality of surveillance cameras is updated in consideration of the above.   When receiving priority settings for video in the surveillance area captured by multiple surveillance cameras, and updating the priority of multiple surveillance cameras from the contents of the above priority settings and the monitoring status of each surveillance area by the supervisor A priority analysis device for generating update information to be used, and a priority update unit of the video concentrator updates the priority of the plurality of monitoring cameras according to the update information generated by the priority analysis device. The video surveillance system according to claim 1.   The priority update means of the video concentrator identifies the advancing direction and the advancing speed of the observer in addition to the monitoring area currently being visited by the observer, taking into account the advancing direction and advancing speed of the observer, The video surveillance system according to any one of claims 1 to 3, wherein the priority of a plurality of surveillance cameras is updated.   The video transfer means of the video concentrator selects a monitoring camera having a priority higher than a preset threshold from a plurality of monitoring cameras, and transfers the video of the monitoring area captured by the monitoring camera to the display terminal. The video surveillance system according to any one of claims 1 to 4, wherein the video surveillance system is characterized in that:   The video transfer means of the video concentrator compares the priorities of a plurality of monitoring cameras and preferentially transfers the video of the monitoring area taken by the monitoring camera having a high priority. The video surveillance system according to any one of claims 1 to 4.   7. The video monitoring system according to claim 6, wherein the video transfer means of the video concentrator transfers the video in the monitoring area by the number of videos that can be simultaneously displayed on the display terminal.   The display terminal accepts the setting of the monitoring area to be monitored, and the priority update means of the video concentrator updates the priority of the monitoring camera that is photographing the monitoring area to the maximum value. The video surveillance system according to claim 7.   Image receiving means for receiving images of individual monitoring areas taken by a plurality of monitoring cameras, and the priority of the monitoring cameras shooting the monitoring areas by identifying the monitoring areas currently being visited by the observer More, priority update means for performing priority update processing for increasing the priority of a monitoring camera that is photographing a monitoring area that is not currently being visited by a monitor, and a plurality of monitoring cameras updated by the priority update means A video concentrator comprising: video transfer means for selecting a video to be transferred from videos in individual monitoring areas received by the video receiving means on the basis of the priority of the video and transferring the video.

Images