JP5001401B2 - VIDEO COLLECTION METHOD, VIDEO COLLECTION SYSTEM, VIDEO COLLECTION PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM CONTAINING THE PROGRAM - Google Patents

Description

  The present invention relates to a video collection method for collecting videos taken by a plurality of cameras installed at a base, a video collection system for executing the video collection method, and a video collection program used for realizing the video collection method, The present invention also relates to a computer-readable recording medium on which the video collection program is recorded.

  In recent years, cameras for surveillance have been installed in various public places such as banks and shops, and are used for criminal clearance and security.

  At this time, if the storage location of the captured video is the same as the capture location, there is a risk that the captured video may be lost due to destruction or failure of the apparatus.

  Against this background, with the spread of broadband networks in recent years, attention has been focused on a method for collecting video in one place and storing it safely (for example, see Non-Patent Document 1).

  In realizing this network-type video surveillance system, if the video from all cameras is collected directly by the central video aggregation device, the location where the camera is installed and the location where the central video aggregation device is installed Therefore, it is necessary to ensure a certain band in all the time periods during which shooting is performed.

  From this, the network cost becomes very high. Therefore, an inexpensive network that does not secure a bandwidth is used.

  However, in an inexpensive network, there is a possibility that a temporary increase in traffic or a momentary disconnection of the network may occur, which may temporarily reduce the transfer rate.

  Therefore, even if the transfer speed temporarily decreases, a base-side video aggregation device is installed in the same base as the camera to ensure that the captured video is transferred to the central video aggregation device. Then, temporarily store the video, transfer the video stored in the video aggregation device on the site side to the central video storage device as appropriate, and temporarily transfer the video due to network disconnection etc. In such a case, a method is used in which retransmission is performed after a certain time.

  In order to reduce network traffic, a method of collecting a plurality of videos as one file and further compressing the file size is also used.

｜ Recorder for network cameras ｜ NSR-100 product overview (searched on January 29, 2007), Internet <URL: http://www.ecat.sony.co.jp/professional/security/products/index.cfm? PD = 23856 & KM = NSR-100 ＞

  In a video monitoring system such as a network type video monitoring system, it is necessary to shoot and store video without interruption for 24 hours.

  However, in the conventional network type video monitoring system composed of the central video aggregation device and the site video aggregation device, it is not assumed that a failure occurs in the site video aggregation device.

  From now on, in the conventional network-type video surveillance system composed of the central video aggregation device and the site side video aggregation device, if a failure occurs in the site side video aggregation device, install it at the site where the failure occurred. There is a problem that video from a certain camera is not saved.

  The present invention has been made in view of such circumstances, and a base-side video aggregating apparatus that collects and aggregates videos taken by a plurality of cameras installed at a base, and a video aggregated by the base-side video aggregating apparatus. When collecting video shot by multiple cameras installed at a site using the central video aggregation device that collects, the video can be collected even if a failure occurs at the site-side video aggregation device The purpose is to provide new video collection technology.

  Prior to the description of the present invention, the related art of the present invention will be described as a first configuration.

[1] First configuration (related technology of the present invention)
A video collection system, which is a related technology of the present invention, is provided in association with a base, and a base-side video aggregating apparatus that collects and aggregates videos taken by a plurality of cameras installed at the base, and a base-side video aggregating apparatus The following configuration is adopted when the central video collecting device that collects the collected video and the operation management device that manages the operation of the base video collecting device.

  Here, each processing means constituting these devices can also be realized by a computer program, and this computer program is provided by being recorded on a suitable computer-readable recording medium or provided via a network. The present invention is realized by installing and operating on a control means such as a CPU when implementing the related technology.

[1-1] Configuration of Operation Management Device The operation management device includes a detection unit that detects whether or not a failure has occurred in the base-side video aggregation device, and a central-side video aggregation when the detection unit detects the occurrence of the failure. Notification means for notifying which base-side video aggregation device a failure has occurred to the device.

[1-2] Configuration of Central-side Video Aggregation Device When the central-side video aggregation device receives information about a faulty site-side video aggregation device from the operation management device, The identification means for identifying which camera is to be selected, and the collection of the images taken by the camera identified by the identification means are started, and the images captured by the camera identified by the identification means are collected and aggregated Collecting means.

[1-3] Operation of First Configuration In the video collection system of the related technology according to the first configuration configured as described above, when the operation management apparatus detects that a failure has occurred in the base-side video aggregation apparatus, The central video aggregation device is notified of which base side video aggregation device has failed.

  Upon receiving this notification, when the central video aggregation device receives information on the failed site video aggregation device from the operation management device, which of the cameras is targeted for video collection by the site video aggregation device. And collecting the video shot by the specified camera, and collecting and collecting the video shot by the specified camera.

  In this way, in the video collection system of the related technology according to the first configuration, when a failure occurs in the site-side video aggregation device, the central-side video aggregation device has the authority to manage the site-side video aggregation device. It takes over and processes to collect and aggregate the video of the cameras managed by the base-side video aggregation device.

[2] Second configuration (the present invention)
In order to achieve the above object, the video collection system according to the present invention is provided in association with a base when the second configuration is followed. A base-side video aggregating device that collects and aggregates video captured by a plurality of cameras installed at the base, and a central-side video aggregator that collects video aggregated by the base-side video aggregator When configured with an operation management device that manages the operation of the base-side video aggregation device, the following configuration is adopted.

  Here, each processing means constituting these devices can also be realized by a computer program, and this computer program is provided by being recorded on a suitable computer-readable recording medium or provided via a network. When the present invention is implemented, the present invention is realized by being installed and operating on a control means such as a CPU.

[2-1] Configuration of base-side video aggregating apparatus for main operation The base-side video aggregating apparatus for main operation collects and aggregates videos taken by a plurality of cameras installed at the base, and centralizes the aggregated videos. Execution means for executing a main operation of transmitting to the side video aggregation device is provided.

[2-2] Configuration of sub-operation site-side video aggregator The sub-operation site-side video aggregator collects and aggregates videos taken by multiple cameras installed at the site, and centralizes the aggregated video. A first execution means for executing a sub-operation of storing only for a predetermined time without transmitting to the side video aggregating apparatus, and a notification from the operation management apparatus that a failure has occurred in the base side video aggregating apparatus Until the central video aggregator enters the video collection and aggregation process, the sub-operation is interrupted and the main operation is entered to collect and aggregate the video shot by multiple cameras installed at the base. And a second execution means for executing a main operation of transmitting the aggregated video to the central video aggregation device.

  Here, the base-side video aggregating apparatus that performs the sub-operation may execute the sub-operation for a part of the cameras that are targeted for collection by the base-side video aggregating apparatus that performs the main operation.

[2-3] Configuration of Operation Management Device The operation management device includes a detection unit that detects whether or not a failure has occurred in the base-side video aggregating device that operates in the main, and a central unit when the detection unit detects the occurrence of a failure. Notification means for notifying the side video aggregating apparatus and the sub-operation base side video aggregating apparatus.

[2-4] Configuration of Central-Side Video Aggregation Device When the central-side video aggregation device receives a notification from the operation management device that a failure has occurred in the main-side video aggregation device, the base-side video aggregation device The identification means for identifying which camera is the target of video collection, and the collection of video captured by the camera identified by the identification means is started, and the video captured by the camera identified by the identification means And collecting means for collecting and consolidating.

[2-5] Operation of Second Configuration In the video collection system according to the second configuration configured as described above, the base-side video aggregation device that performs the main operation captures video captured by a plurality of cameras installed at the base. The main operation of collecting and aggregating and sending the aggregated video to the central video aggregator is performed, and the sub-operational video aggregator collects video captured by multiple cameras installed at the site. Then, a sub-operation is performed in which the aggregated video is stored for a predetermined time without being transmitted to the central video aggregation device.

  At this time, when the operation management device detects that a failure has occurred in the base-side video aggregation device that operates in the main operation, it notifies the central-side video aggregation device and the sub-operation site-side video aggregation device of the fact. .

  Upon receiving this notification, when the central video aggregation device receives a notification from the operation management device that a failure has occurred in the main video aggregation device that operates in the main operation, the central video aggregation device becomes a video collection target. It identifies which camera it is, starts collecting the images taken by the identified camera, collects and aggregates the images taken by the identified camera.

  On the other hand, upon receiving this notification, the sub-operation site-side video aggregation device receives a notification from the operation management device that a failure has occurred in the main-operation site-side video aggregation device. Until the collection and aggregation process is started, the sub-operation is interrupted, the main operation is started, and the aggregated video is transmitted to the central video aggregation device.

  In this way, in the video collection system according to the second configuration, two base-side video aggregating apparatuses, that is, a base-side video aggregating apparatus that operates in a main operation and a sub-operating base-side video aggregating apparatus are installed in one base. In the event that a failure occurs in the main operation-side video aggregation device by collecting the same camera video by the two site-side video aggregation devices, the central-side video aggregation device will The video collection and collection process is started by the central video aggregation device, while taking over the management authority of the video aggregation device on the side and collecting and aggregating the video of the cameras managed by the base side video aggregation device that operates in the main Until that time, processing is performed so as to guarantee the video collection and aggregation processing by the sub-operation site side video aggregation device.

[3] Third configuration (the present invention)
In order to achieve the above object, the video collection system according to the present invention is provided in association with a base when the third configuration is followed, and the base-side video aggregating apparatus that is sub-operated with the base-side video aggregating apparatus that operates as a main A base-side video aggregating device that collects and aggregates video captured by a plurality of cameras installed at the base, and a central-side video aggregator that collects video aggregated by the base-side video aggregator When configured with an operation management device that manages the operation of the base-side video aggregation device, the following configuration is adopted.

  Here, each processing means constituting these devices can also be realized by a computer program, and this computer program is provided by being recorded on a suitable computer-readable recording medium or provided via a network. When the present invention is implemented, the present invention is realized by being installed and operating on a control means such as a CPU.

[3-1] Configuration of the base-side video aggregating apparatus for main operation The base-side video aggregating apparatus for main operation collects and aggregates videos taken by a plurality of cameras installed at the base, and centralizes the aggregated videos. Execution means for executing a main operation of transmitting to the side video aggregation device is provided.

[3-2] Configuration of sub-operation site-side video aggregation device The sub-operation site-side video aggregation device collects and aggregates the images taken by a plurality of cameras installed at the site, and centralizes the aggregated images. A first execution means for executing a sub-operation of storing only for a predetermined time without transmitting to the side video aggregating apparatus, and a notification from the operation management apparatus that a failure has occurred in the base side video aggregating apparatus Until the site-side video aggregator returns to the normal state, the sub-operation is interrupted and the main operation is entered to collect and aggregate video shot by multiple cameras installed at the site. And a second execution means for executing a main operation of transmitting the aggregated video to the central video aggregation device.

  Here, the base-side video aggregating apparatus that performs the sub-operation may execute the sub-operation for a part of the cameras that are targeted for collection by the base-side video aggregating apparatus that performs the main operation.

[3-3] Configuration of Operation Management Device The operation management device detects whether or not a failure has occurred in the base-side video aggregation device that performs the main operation, and detects whether or not the failure has returned to the normal state. When the detection unit detects the occurrence of a failure, the sub-operation site side video aggregation device is notified of this, and when the detection unit detects the return to the normal state, the sub-operation site side Notification means for notifying the video aggregating apparatus of the fact.

[3-4] Operation of Third Configuration In the video collection system according to the third configuration configured as described above, the base-side video aggregation device that performs the main operation captures video captured by a plurality of cameras installed at the base. The main operation of collecting and aggregating and sending the aggregated video to the central video aggregator is performed, and the sub-operational video aggregator collects video captured by multiple cameras installed at the site. Then, a sub-operation is performed in which the aggregated video is stored for a predetermined time without being transmitted to the central video aggregation device.

  At this time, when the operation management device detects that a failure has occurred in the base-side video aggregating device operating in the main operation, the operation management device notifies the sub-operational base-side video aggregating device of the failure, and further, When it is detected that the side video aggregating apparatus has returned to the normal state from the failure, this is notified to the sub-operation base side video aggregating apparatus.

  Upon receiving this notification, the sub-operation site side video aggregation device receives a notification from the operation management device that a failure has occurred in the main operation site side video aggregation device. Until returning to the state, the sub-operation is interrupted to enter the main operation, and the aggregated video is transmitted to the central video aggregation device.

  In this way, in the video collection system according to the third configuration, two base-side video aggregating apparatuses, that is, the base-side video aggregating apparatus that performs the main operation and the sub-operating base-side video aggregating apparatus are installed in one base. If the same video from the same camera is collected by the two base-side video aggregators, and the main-side video aggregator fails, the sub-operating base-side video aggregator temporarily Until the main operation shifts to the main operation and the base-side video aggregation device that performs the main operation returns to the normal state, the aggregated video is processed to be transmitted to the central-side video aggregation device.

[4] Features of the present invention When a cluster system is used to improve reliability in a general computer system, an active system that actually performs processing, and a standby system that performs processing instead of the active system when a failure occurs And exist. In this case, the same processing cannot be continued unless the status of the active system (data on the memory, data stored in the HDD, etc.) before the failure occurs is taken over to the standby system.

  On the other hand, data handled by the network-type video surveillance system is a set of images in which images at a certain time point are continuous. Each image obtained by photographing a state at a certain time can be associated with a photographed camera and a photographing time. Therefore, each image is stored in a separate aggregation server in a time-sharing manner, and even if the same image is stored in a plurality at the same time, it can be easily managed intensively as a single stored data. is there.

  The first configuration, which is a related technology of the present invention, employs a method of sharing only the information of the cameras aggregated by the site side video aggregating apparatus and storing them in the central side video aggregating apparatus. By doing so, the cost of always backing up the video collected by the base side video aggregation device as in a general cluster device is reduced.

  Further, in the second configuration and the third configuration according to the present invention, a system for temporarily storing video is employed in order to prevent loss of video during the time from failure to recovery of the standby system. However, complete video backup is not performed, and video loss can be prevented with minimal backup.

  As described above, according to the present invention, the base-side video aggregating apparatus that collects and aggregates video captured by a plurality of cameras installed at the base, and the central that collects the video aggregated by the base-side video aggregating apparatus When collecting video shot by multiple cameras installed at the site using the video aggregation device on the side, video can be collected even if a failure occurs at the site-side video aggregation device. Normal operation can be continued.

It is a figure which shows an example of the system configuration | structure of the network type | mold video surveillance system which is a related technique of this invention. It is a flowchart which a base side image | video aggregation apparatus performs. It is a flowchart which a base side image | video aggregation apparatus performs. It is a flowchart which an operation management apparatus performs. It is a flowchart which an operation management apparatus performs. It is a flowchart which a center side image | video aggregation apparatus performs. It is explanatory drawing of the process which an operation management apparatus performs. It is explanatory drawing of the process which a network type video surveillance system performs. It is explanatory drawing of the process which a network type video surveillance system performs. It is a figure which shows an example of the system configuration | structure of the network type video surveillance system which comprises this invention. It is a flowchart which an operation management apparatus performs. It is a flowchart which an operation management apparatus performs. It is a flowchart which a center side image | video aggregation apparatus performs. It is a flowchart which a base side image | video aggregation apparatus performs. It is explanatory drawing of the process which a network type video surveillance system performs. It is explanatory drawing of the process which a network type video surveillance system performs. It is explanatory drawing of the process which a network type video surveillance system performs. It is a figure which shows another example of the system configuration | structure of the network type video surveillance system which comprises this invention. It is a flowchart which an operation management apparatus performs. It is a flowchart which an operation management apparatus performs. It is a flowchart which a base side image | video aggregation apparatus performs. It is explanatory drawing of the process which a network type video surveillance system performs. It is explanatory drawing of the process which a network type video surveillance system performs.

  Prior to detailed description of the present invention according to an embodiment, a network type video surveillance system employing a first configuration that is a related technique of the present invention will be described below.

  FIG. 1 illustrates an example of a system configuration of a network type video surveillance system which is a related technique of the present invention.

  As shown in this figure, the network type video surveillance system of the first configuration has a central video aggregation device 10, an operation management device 20, and a base side when there are two bases where cameras are installed. A video aggregation device 30, a site-side video aggregation device 40, and a camera 50 are provided.

  A camera 50 that can be directly connected to the network is used. The camera 50 takes a picture according to a command from the central video aggregating apparatus 10 or the site side video aggregating apparatus 30, 40, and the captured video is used as a command issuing apparatus. Perform the transfer process.

  The site-side video aggregation device 30 is provided at the site A and includes a video collection unit 31, a video storage unit 32, and a video transmission unit 33, and a plurality of cameras (this is connected to the network of the base A set in advance) In the example shown in the figure, the video captured by the cameras a to c) is collected and compressed, and the video for a certain period of time is packed as one file and transmitted to the central video aggregation device 10.

  The site-side video aggregation device 40 is provided at the site B and includes a video collection unit 41, a video storage unit 42, and a video transmission unit 43, and a plurality of cameras (this is connected to the network of the base B set in advance) In the example shown in the figure, the video taken by the cameras df) is collected and compressed, and the video for a certain period of time is packed as one file and transmitted to the central video aggregation device 10.

  The central video aggregation device 10 includes a video collection unit 11 and a video storage unit 12, and performs processing for collecting videos stored from the site side video aggregation devices 30 and 40 and storing them in the video storage unit 12. .

  The central video aggregation device 10 further includes a camera setting information storage unit 13 that stores setting information related to the camera 50 managed by each of the site side video aggregation devices 30 and 40, and the site side video aggregation device 30 and 40 has a failure. When the error occurs, the function for controlling the camera 50 managed by the base-side video aggregation devices 30 and 40 where the failure has occurred is taken over based on the setting information stored in the camera setting information storage unit 13. The video which the camera 50 of this image | photographs is collected and integrated. Then, when the base-side video aggregation devices 30 and 40 in which the failure has occurred return to the normal state, a process of transferring the authority to manage the camera 50 to the base-side video aggregation devices 30 and 40 that have returned to the normal state. Do.

  The operation management apparatus 20 includes a state detection unit 21 and a state recording memory 22 to determine whether a failure has occurred in the site-side video aggregation devices 30 and 40 and the site-side video aggregation device 30 in which the failure has occurred. , 40 is detected to return to the normal state, and a process of notifying the central video aggregation device 10 of the detection result is performed.

  FIG. 2 illustrates a flowchart executed by the video collection units 31 and 41 included in the site-side video aggregation devices 30 and 40. FIG. 3 illustrates execution of the video transmission units 33 and 43 included in the site-side video aggregation devices 30 and 40. 4 and 5 illustrate a flowchart executed by the state detection unit 21 included in the operation management apparatus 20, and FIG. 6 illustrates an execution of the video collection unit 11 included in the central video aggregation apparatus 10. A flowchart is illustrated.

  Next, processing executed by the network type video surveillance system according to the first configuration will be described according to these flowcharts.

  When activated, the video collection units 31 and 41 of the site side video aggregation devices 30 and 40 collect the video of the camera 50 under management as shown in the flowchart of FIG. , 42 is repeatedly executed.

  On the other hand, when the video transmission units 33 and 43 of the base side video aggregation devices 30 and 40 are activated, first, as shown in the flowchart of FIG. 3, in step S200, the video transmission units 33 and 43 wait for the transmission cycle to be reached. When the transmission cycle is reached, the process proceeds to step S201, and unprocessed videos are read from the video storage units 32 and 42.

  Subsequently, in step S202, the read video is compressed and packed into one file. Subsequently, in step S203, the packed file is transmitted to the central video aggregation device 10.

  Subsequently, in step S204, it is determined whether the file transmission to the central video aggregation device 10 is successful. When it is determined that the file transmission is successful, the process proceeds to step S205 to delete the transmitted file. Then, the process returns to step S200.

  On the other hand, when it is determined that the file transmission to the central video aggregation device 10 has failed, the process proceeds to step S206, the file that has failed to be transmitted is set as the file to be transmitted next time, and the process returns to step S200. .

  In this way, the base-side video aggregating apparatuses 30 and 40 collect and compress video captured by a plurality of cameras 50 connected to the network of the local base by executing the flowcharts of FIGS. 2 and 3. Then, processing is performed so that the video for a certain period of time is packed as one file and transmitted to the central video aggregation device 10.

  Here, in the flowchart of FIG. 3, it is determined whether or not the video transmission period has been reached on the site-side video aggregation device 30 or 40 side, but the video on the central-side video aggregation device 10 side. It is also possible to adopt a configuration in which it is determined whether or not the transmission cycle has been reached, and the base-side video aggregation devices 30 and 40 are instructed to transmit video.

  Next, processing executed by the operation management apparatus 20 will be described.

  When the state detection unit 21 provided in the operation management apparatus 20 is activated by receiving the processing of the base-side video aggregation apparatuses 30 and 40, first, as shown in the flowcharts of FIGS. When the detection period is reached after waiting for the detection period to be reached, the process proceeds to step S301, where it is determined whether or not all the base-side video aggregation devices 30 and 40 have been selected, and all the base-side videos When it is determined that the aggregation devices 30 and 40 are not selected, the process proceeds to step S302, and one unselected base-side video aggregation device 30 and 40 is selected.

  Subsequently, in step S303, the selected base-side video aggregating apparatus 30, 40 is inquired as to whether it is operating normally. In subsequent step S304, in response to this inquiry, the selected base-side video aggregating apparatus is selected. It is determined whether or not a response is returned from 30 or 40.

  According to this determination process, when it is determined that a response has not been returned from the selected site-side video aggregation device 30, 40, it is determined that the selected site-side video aggregation device 30, 40 is in a failure state. Proceeding to step S305, based on the previous state recorded in the state recording memory 22, it is determined whether a new failure has occurred or whether the failure has continued, and the determination result is not shown in a working memory. In addition, the fact that the selected base-side video aggregation devices 30 and 40 are in a fault state is recorded in the state recording memory 22, and then the process returns to step S301.

  Here, the working memory is cleared when entering the process of step S301.

  On the other hand, when it is determined according to the determination process in step S304 that a response has been returned from the selected base-side video aggregation device 30, 40, the process proceeds to step S306, where the response is a response indicating that the response is normal. Judge whether there is.

  When it is determined that the response is not a normal operation according to this determination process, it is determined that the selected base-side video aggregation devices 30 and 40 are in a failure state, and the process proceeds to step S307 to record the status. Based on the previous state recorded in the memory 22, it is determined whether a new failure has occurred or whether the failure continues, and the determination result is recorded in a working memory (not shown) and the selected base After the fact that the side video aggregation devices 30 and 40 are in a fault state is recorded in the state recording memory 22, the process returns to step S301.

  On the other hand, when it is determined that the response from the selected base-side video aggregating apparatus 30, 40 is a normal operation according to the determination processing in step S306, the process proceeds to step S308, and the status recording memory 22 stores the response. Based on the previous state recorded, it is judged whether it has newly returned to the normal state or the normal state is continuing, and the result of the determination is recorded in a working memory not shown, and the selected base side After recording in the state recording memory 22 that the video aggregation devices 30 and 40 are in a normal state, the process returns to step S301.

  When it is determined in step S301 that all the base-side video aggregating apparatuses 30 and 40 have been selected by repeating the processes in steps S301 to S308, the process proceeds to step S309 to record the work memory. When it is determined according to the data whether or not there is a newly failed base-side video aggregation device 30, 40, and when it is determined that there is a new faulty base-side video aggregation device 30, 40, step Proceeding to step S310, the central video aggregation device 10 is notified of the identification information of the site-side video aggregation devices 30 and 40 where the failure has occurred, and then the process returns to step S300.

  On the other hand, when it is determined according to the determination processing in step S309 that there is no newly failed base-side video aggregation device 30, 40, the process proceeds to step S311 and a new normal state is set according to the recording data in the work memory. When it is determined whether or not there is a restored base-side video aggregation device 30, 40, and it is determined that there is no new base-side video aggregation device 30, 40, the process immediately returns to step S300. When it is determined that there is a base-side video aggregation device 30, 40 that has newly returned to the normal state, the process proceeds to step S312 and the central-side video aggregation device 10 is returned to the normal-side video aggregation device 30 that has returned to the normal state. , 40 is notified, and the process returns to step S300.

  In this way, as shown in FIG. 7, the operation management device 20 sends a command for confirming the normality of the operation to each base-side video aggregation device 30, 40 at regular intervals, and responds thereto. Based on the above, it is detected whether a failure has occurred in the site-side video aggregation devices 30 and 40 and whether the site-side video aggregation devices 30 and 40 in which the failure has occurred have returned to the normal state. The detection result is processed so as to be notified to the central video aggregation device 10.

  Here, when the base-side video aggregation devices 30 and 40 have a function of notifying the fact when the base-side video aggregation devices 30 and 40 are faulty, the base-side video aggregation devices 30 and 40 are based on the notification. Processing may be performed to detect whether or not a failure has occurred and whether or not the base-side video aggregation devices 30 and 40 in which the failure has occurred have returned to a normal state.

  Next, processing executed by the central video aggregation device 10 will be described.

  When the video collection unit 11 included in the central video aggregation device 10 is activated, as shown in the flowchart of FIG. 6, first, in step S400, from the operation management device 20 or the site video aggregation devices 30 and 40. When it is detected that the data has been transmitted after waiting for the data to be transmitted, the process proceeds to step S401, where it is determined whether the data has been transmitted from the site side video aggregation devices 30, 40. To do.

  When it is determined that data has been transmitted from the site-side video aggregation devices 30 and 40 according to this determination process, that is, based on the flowchart of FIG. When it is determined that the video file packed in is transmitted, the process proceeds to step S402, where the transmitted video is stored in the video storage unit 12, and the process returns to step S400.

  On the other hand, when it is determined according to the determination processing in step S401 that data is not transmitted from the site-side video aggregation devices 30 and 40 but data is transmitted from the operations management device 20, That is, based on the flowcharts of FIGS. 4 and 5, when it is determined that the identification information of the base-side video aggregation devices 30 and 40 that have failed or returned to the normal state has been transmitted from the operation management device 20, step S403 is performed. Then, it is determined whether or not the notification from the operation management apparatus 20 is a failure occurrence notification.

  When it is determined that the notification from the operation management apparatus 20 is a failure occurrence notification according to this determination process, the process proceeds to step S404, and the operation management apparatus 20 is referred to by referring to the storage information in the camera setting information storage unit 13. The camera 50 under the management of the base-side video aggregation devices 30 and 40 pointed to by the identification information notified from is identified, and the identification is made by referring to the stored information in the camera setting information storage unit 13 in the subsequent step S405. Setting information necessary for controlling the camera 50 is acquired.

  Subsequently, in step S406, according to the acquired setting information of the camera 50, the video captured by the identified camera 50 is directly collected, and the collected video is compressed and packed and stored in the video storage unit 12. After entering the execution of the process, the process returns to the process of step S400.

  On the other hand, according to the determination processing in step S403, when it is determined that the notification from the operation management apparatus 20 is not a failure occurrence notification, that is, it is determined that the notification from the operation management apparatus 20 is a notification of return to the normal state. In some cases, the process proceeds to step S407 to stop collecting videos directly from the cameras 50 under the management of the site side video aggregation devices 30 and 40 pointed to by the identification information notified from the operation management device 20, and the site side After returning to the process of collecting the video transmitted from the video aggregation devices 30 and 40, the process returns to the process of step S400.

  In this way, the central video aggregation device 10 collects aggregated videos taken by the cameras 50 under the management of the site video aggregation devices 30 and 40 from the site video aggregation devices 30 and 40. When a failure occurs in the base-side video aggregation devices 30 and 40 during the operation, the video taken by the camera 50 under the management of the base-side video aggregation devices 30 and 40 in which the failure has occurred is directly collected. Is processed. Then, when the base side video aggregation devices 30 and 40 in which the failure has occurred return to the normal state, the direct collection is stopped.

  Next, the processing executed by the network type video surveillance system configured as shown in FIG. 1 will be specifically described with reference to FIGS.

  In the network-type video surveillance system configured as shown in FIG. 1, the base-side video aggregation device 30 provided at the base A has (1) the cameras a to c under the management of its own device as shown in FIG. Collect and temporarily store video to be shot, (2) compress the stored video at regular intervals and pack it into a single file, and (3) center-side video aggregator at regular intervals 10 and (4) deleting the transmitted file is repeatedly executed.

  At this time, the operation management apparatus 20 monitors whether a failure occurs in the site-side video aggregation device 30. As shown in FIG. 9, (1) the site-side video aggregation device 30 has a failure. (2) Notifying the central video aggregation device 10 that a failure has occurred in the base video aggregation device 30, and receiving this, the central video aggregation device 10 As shown in FIG. 9, (3) it is specified that the cameras 50 managed by the base-side video aggregation device 30 in which the failure has occurred are cameras a to c, and (4) for the specified cameras a to c By sending the command, processing is performed so that the own device collects the images taken by the cameras a to c.

  In this way, in the network type video surveillance system configured as shown in FIG. 1, video can be collected even when a failure occurs in the base side video aggregation devices 30 and 40, and thus normal operation can be performed. Will be able to continue.

  FIG. 10 illustrates an example of a system configuration of a network type video surveillance system including the present invention.

  The network-type video monitoring system shown in this figure includes a video backup processing unit 61 in addition to the base-side video aggregation device 30 shown in FIG. A base-side video aggregating apparatus that performs processing for collecting and storing video taken by a camera 50 under management of 30 (which may be a specific camera 50 or all of the cameras 50). 60.

  Furthermore, in the network-type video monitoring system shown in this figure, the operation management apparatus 20 uses the site-side video aggregation devices 30 and 40 as detection targets, and whether a failure has occurred in the site-side video aggregation devices 30 and 40; In addition to detecting whether or not the base-side video aggregation devices 30 and 40 in which the failure has occurred have returned to the normal state, the base-side video is notified to the central-side video aggregation device 10. When a failure occurs in the aggregation device 30, processing is performed to notify the base side video aggregation device 60 of the failure.

  11 and 12 illustrate a flowchart executed by the state detection unit 21 included in the operation management apparatus 20, and FIG. 13 illustrates a flowchart executed by the video collection unit 11 included in the central video aggregation apparatus 10. FIG. 14 illustrates a flowchart executed by the video backup processing unit 61 included in the site-side video aggregation device 60.

  Here, the same flowchart as the flowcharts of FIGS. 2 and 3 is executed for the base-side video aggregation devices 30 and 40.

  Next, processing executed by the network type video surveillance system shown in FIG. 10 will be described according to these flowcharts.

  In the flowcharts of FIGS. 11 and 12, the state detection unit 21 included in the operation management apparatus 20 is the same as that illustrated in FIG. 11 except that the process of steps S310-1 to S310-4 is executed following step S310. 4 and 5 are executed.

  Further, in the flowchart of FIG. 13, the video collection unit 11 included in the central-side video aggregation device 10 executes the processing of steps S406-1 to S406-2 following step S406, The same processing as that in the flowchart of FIG. 6 is executed.

  That is, when the state detection unit 21 included in the operation management apparatus 20 notifies the central video aggregation device 10 of the identification information of the faulty base video aggregation devices 30 and 40 in step S310, FIG. 4 and FIG. In the flowchart of FIG. 5, the process immediately returns to the process of step S300, whereas in the flowcharts of FIGS. 11 and 12, the process proceeds to step S310-1, and the base where the fault has occurred is the backup destination. When it is determined whether or not it is the side video aggregating apparatus 30 and it is determined that the faulty site side video aggregating apparatus is not the site side video aggregating apparatus 30, the process returns to step S300.

  When it is determined in accordance with the determination processing in step S310-1 that the faulty site-side video aggregation device is the site-side video aggregation device 30 serving as a backup destination, the process proceeds to step S310-2 to perform backup. The base-side video aggregating apparatus 60, which is the base-side video aggregating apparatus, is notified that a failure has occurred in the base-side video aggregating apparatus 30 serving as a backup destination.

  Subsequently, in step S310-3, in accordance with the notification from the central video aggregation device 10, the central video aggregation device 10 waits for the central video aggregation device 10 to start direct video collection. Is started, the process proceeds to step S310-4 to notify the base-side video aggregating apparatus 60, which is a backup base-side video aggregating apparatus, that the central-side video aggregating apparatus 10 has started direct video collection. Then, the process returns to step S300.

  On the other hand, when the video collection unit 11 included in the central video aggregation device 10 starts direct video collection in step S406, the flow immediately returns to the process of step S400 in the flowchart of FIG. 6 whereas the flowchart of FIG. In step S406-1, it is determined whether or not a failure has occurred in the site-side video aggregation device 30 serving as the backup destination, and the failure has occurred in the site-side video aggregation device 30 serving as the backup destination. When it is determined that it has not occurred, the process returns to the process of step S400, and when it is determined that a failure has occurred in the base-side video aggregation device 30 that is the backup destination, the process proceeds to step S406-2. After notifying the management device 20 of the start of direct video collection, the process returns to step S400.

  In this way, in the network type video monitoring system shown in FIG. 10, when a failure occurs in the site side video aggregation device 30 that is the backup destination, the site side video aggregation device 60 that is the backup site side video aggregation device 60. In addition, the failure occurrence is notified, and when the central video aggregation device 10 starts the direct collection of the video, this is notified.

  Next, processing executed by the video backup processing unit 61 included in the site-side video aggregation device 60 that is a backup site-side video aggregation device will be described.

  When the video backup processing unit 61 included in the site-side video aggregation device 60 is activated, first, as shown in the flowchart of FIG. 14, first, in step S500, the video backup processing unit 61 is managed by the site-side video aggregation device 30. A process for collecting, compressing, and packing video captured by the camera 50 and storing the video for a certain period of time (a process for backup) is executed, and in step S501, the operation management apparatus 20 becomes a backup destination. When it is determined whether or not there is a notification that a failure has occurred in the site-side video aggregating apparatus 30, and when it is determined that there is no notification, the process of step S500 is repeated.

  In step S501, when it is determined from the operation management apparatus 20 that there is a notification that a failure has occurred in the base-side video aggregation apparatus 30 serving as a backup destination, the process proceeds to step S502, and only for a certain period of time. The stored video file is transmitted to the central video aggregation device 10.

  Subsequently, in step S503, the video captured by the camera 50 under the management of the base-side video aggregation device 30 serving as a backup destination is collected, compressed, and packed and transmitted to the central-side video aggregation device 10, and then in step S504. Then, it is determined whether or not there is a notification from the operation management device 20 that the central video aggregation device 10 has started direct video collection. If there is no notification, the processing in step S503 is repeated, and the notification is received. If there is, the process returns to step S500 (backup process).

  In this way, in the network type video monitoring system shown in FIG. 1, until the central video aggregation device 10 starts the direct video collection, the site-side video aggregation devices 30 and 40 where the failure occurs are collected. In contrast, there is a possibility that there is a video that cannot be performed. In the network type video monitoring system shown in FIG. 10, the base side video aggregation device 60 that performs the backup processing is prepared, so such inconvenience does not occur. Can be realized.

  Next, processing executed by the network type video surveillance system configured as shown in FIG. 10 will be specifically described with reference to FIGS.

  In the network type video surveillance system configured as shown in FIG. 10, the base-side video aggregation device 30 provided at the base A is, as shown in FIG. 15, (1) cameras a to c under the control of its own device. Collect and temporarily store video to be shot, (2) compress the stored video at regular intervals and pack it into a single file, and (3) center-side video aggregator at regular intervals 10 and (4) deleting the transmitted file is repeatedly executed. At this time, as shown in FIG. 15, the site-side video aggregation device 60 provided at the site A collects, compresses, and packs the video captured by the camera 50 under the management of the site-side video aggregation device 30 as the backup destination. Then, backup processing is performed to save for a certain time.

  At this time, the operation management apparatus 20 monitors whether or not a failure occurs in the site-side video aggregation device 30. As shown in FIG. 16, (1) the site-side video aggregation device 30 has a failure. (2) Notifying the center side video aggregation device 10 and the site side video aggregation device 60 that a failure has occurred in the site side video aggregation device 30, and receiving this, As shown in FIG. 16, the site-side video aggregating apparatus 60 transmits (3) the video file stored by the backup process to the central-side video aggregating apparatus 10, and then (4) the site-side video aggregating apparatus 30. Instead, the video captured by the camera 50 under the management of the site-side video aggregation device 30 is collected, compressed, and packed, and transmitted to the central-side video aggregation device 10.

  Then, as illustrated in FIG. 17, the operation management apparatus 20 (5) when the central video aggregation device 10 starts direct video collection, (6) the central video aggregation to the base video aggregation device 60. In response to the notification that the device 10 has started the direct collection of the video, the base-side video aggregation device 60 (7) resumes the original backup processing as shown in FIG.

  In this way, in the network type video surveillance system configured as shown in FIG. 10, video can be collected even when a failure occurs in the base-side video aggregation devices 30 and 40. Will be able to continue.

  FIG. 18 illustrates another example of the system configuration of the network type video surveillance system including the present invention.

  The network type video monitoring system shown in this figure is provided with the site side video aggregation device 60 for performing the backup processing shown in FIG. 10 at the site A, and the site side video aggregation device 40 shown in FIG. In addition to the provision of a video backup processing unit 71, a camera 50 (which may be a specific camera 50 or all of the cameras 50) under the management of the base-side video aggregation device 40 as a backup destination. A base-side video aggregating apparatus 70 that performs processing of collecting video to be captured and storing the video for a certain period of time is provided.

  Furthermore, in the network type video monitoring system shown in this figure, the central video aggregation device 10 does not directly collect video, but the central video aggregation device 30 and 40 performs backup processing when a failure occurs in the central video aggregation devices 30 and 40. Instead of the backup-side base-side video aggregation devices 30 and 40, the devices 60 and 70 process the video to be collected, compressed and packed, and transmitted to the central-side video aggregation device 10.

  In order to realize this, in the network type video monitoring system shown in this figure, the operation management device 20 has detected a failure in the site side video aggregation devices 30 and 40 with the site side video aggregation devices 30 and 40 as detection targets. That is, it is detected whether the base-side video aggregation devices 30 and 40 in which the failure has occurred have returned to the normal state, and the detection result is not the central-side video aggregation device 10 but the backup process. A process of notifying the base-side video aggregation devices 60 and 70 to be performed is performed.

  19 and 20 illustrate a flowchart executed by the state detection unit 21 included in the operation management apparatus 20, and FIG. 21 illustrates a flowchart executed by the video backup processing units 61 and 71 included in the site-side video aggregation apparatuses 60 and 70. Is illustrated.

  Here, the same flowchart as the flowcharts of FIGS. 2 and 3 is executed for the base-side video aggregation devices 30 and 40.

  Next, processing executed by the network type video surveillance system shown in FIG. 18 will be described according to these flowcharts.

  In the flowcharts of FIGS. 19 and 20, the state detection unit 21 included in the operation management apparatus 20 executes the process of step S310α instead of the process of step S310 in the flowcharts of FIGS. Instead of the process of step S312 in the flowchart of FIG. 5, the process of step S312α is executed.

  That is, when the state detection unit 21 included in the operation management apparatus 20 determines in step S309 that there is a newly failed base-side video aggregation device 30, 40, the process proceeds to step S310α, and the base in which the fault has occurred. The base-side video aggregation devices 60 and 70 that back up the side-video aggregation devices 30 and 40 are notified that a failure has occurred in the backup-side base-side video aggregation devices 30 and 40, and then the processing of step S300 is performed. Return.

  In step S309, when it is determined that there is no newly failed base-side video aggregation device 30, 40, the process proceeds to step S311 and the base-side video aggregation device 30, 40 newly restored to the normal state is displayed. When it is determined whether or not there is no base-side video aggregation device 30, 40 that has newly returned to the normal state, the processing immediately returns to the process of step S300, and the base-side video that has newly returned to the normal state. When determining that there is an aggregation device 30, 40, the process proceeds to step S 312 β, and the backup destination base for the base side video aggregation devices 60, 70 that back up the normal side restored base side video aggregation devices 30, 40. After notifying that the side video aggregation devices 30 and 40 have returned to the normal state, the process returns to step S300.

  Here, in the flowcharts of FIGS. 19 and 20, the state detection unit 21 included in the operation management device 20 does not notify the central video aggregation device 10 of the information on the occurrence of the failure / return to the normal state. When the central video aggregation device 10 determines whether or not the video transmission period has been reached, the central video aggregation device 30 or 40 is instructed to transmit video. Processing is performed so as to notify the side video aggregation device 10 of the information on the occurrence of the failure and the return to the normal state.

  When the video backup processing units 61 and 71 included in the base-side video aggregation devices 60 and 70 are activated in response to the processing of the operation management device 20, first, as shown in the flowchart of FIG. Then, the processing (backup processing) that collects, compresses, and packs the video captured by the camera 50 under the control of the base-side video aggregation devices 30 and 40 as backup destinations and stores it for a certain period of time is executed. In subsequent step S601, it is determined whether or not there is a notification from the operation management apparatus 20 that a failure has occurred in the base side video aggregation apparatuses 30 and 40 serving as backup destinations, and it is determined that there is no notification. When determining, the process of step S600 is repeated.

  In step S601, when it is determined from the operation management apparatus 20 that there is a notification that a failure has occurred in the base-side video aggregation apparatuses 30 and 40 that are the backup destinations, the process proceeds to step S602, and a fixed amount is obtained. The video file stored only for the time is transmitted to the central video aggregation device 10.

  Subsequently, in step S603, the video captured by the camera 50 under the management of the base-side video aggregation devices 30 and 40 serving as backup destinations is collected, compressed, and packed and transmitted to the central-side video aggregation device 10, and the following step In S604, it is determined whether or not there is a notification from the operation management apparatus 20 that the base-side video aggregation apparatuses 30 and 40 that are backup destinations have returned to the normal state. If there is no notification, the process of step S604 is performed. If there is a notification, the process returns to the process of step S600 (process for backup).

  In this way, when the site-side video aggregation devices 30 and 40 collect the images captured by the camera 50 and transmit them to the central-side video aggregation device 10, When a failure occurs in the side video aggregating devices 30 and 40, the video captured by the cameras 50 is collected and transmitted to the central side video aggregating device 10 on behalf of itself. When the base-side video aggregation devices 30 and 40 in which the failure has occurred return to the normal state, the proxy processing is stopped and processing is performed so as to return to the original backup processing.

  Next, the processing executed by the network type video surveillance system configured as shown in FIG. 18 will be specifically described with reference to FIGS.

  In the network-type video surveillance system configured as shown in FIG. 18, the base-side video aggregation device 30 provided at the base A, as shown in FIG. 22, (1) cameras a to c under the control of its own device. Collect and temporarily store video to be shot, (2) compress the stored video at regular intervals and pack it into a single file, and (3) center-side video aggregator at regular intervals 10 and (4) deleting the transmitted file is repeatedly executed. At this time, as shown in FIG. 22, the site-side video aggregation device 60 provided at the site A collects, compresses, and packs the video captured by the camera 50 under the management of the site-side video aggregation device 30 as the backup destination. Then, backup processing is performed to save for a certain time.

  At this time, the operation management apparatus 20 monitors whether a failure occurs in the site-side video aggregation device 30. As shown in FIG. 23, (1) the site-side video aggregation device 30 has a failure. (2) Notifying the site-side video aggregation device 60 that a failure has occurred in the site-side video aggregation device 30, and in response to this, the site-side video aggregation device 60 As shown in FIG. 23, (3) the video file stored by the backup process is transmitted to the central video aggregation device 10, and (4) the site video aggregation is performed in place of the site video aggregation device 30. A process of collecting, compressing, and packing video captured by the camera 50 under the control of the device 30 and transmitting the video to the central video aggregation device 10 is executed.

  In this way, in the network type video surveillance system configured as shown in FIG. 18, video can be collected even when a failure occurs in the base side video aggregation devices 30 and 40, and thus normal operation can be performed. Will be able to continue.

  The present invention can be applied to a system including a base-side video aggregating apparatus that collects and aggregates videos taken by a plurality of cameras installed at a base, and even when a failure occurs in the base-side video aggregator It will be possible to continue normal operation by collecting video.

DESCRIPTION OF SYMBOLS 10 Center side video aggregation apparatus 11 Video collection part 12 Video storage part 13 Camera setting information storage part 20 Operation management apparatus 21 State detection part 22 State recording memory 30 Base side video aggregation apparatus 31 Video collection part 32 Video storage part 33 Video transmission part 40 Site side video aggregation device 41 Video collection unit 42 Video storage unit 43 Video transmission unit 50 Camera

Claims (8)

A base that is provided in association with a base and is composed of a base-side video aggregating device that operates in the main and a base-side video aggregating device that operates as a sub, and collects and aggregates video captured by multiple cameras installed at the base It is executed by a video collection system that is composed of a side video aggregation device, a central video aggregation device that collects video aggregated by the site side video aggregation device, and an operation management device that manages the operation of the site side video aggregation device A video collection method,
The base operation video aggregation device that performs the main operation performs a main operation of transmitting the aggregated video to the central video aggregation device,
The sub-operation base-side video aggregation device performs a sub-operation of storing the aggregated video for a predetermined time without transmitting to the central-side video aggregation device,
When the operation management apparatus detects that a failure has occurred in the base-side video aggregating apparatus that operates in the main operation, the operation management apparatus is informed to the central-side video aggregating apparatus and the sub-operational base-side video aggregating apparatus. Notice
When the central video aggregation device receives notification from the operation management device that a failure has occurred in the main video aggregation device that operates in the main, the central video aggregation device has a camera that is the target of video collection. Identify which one is, start collecting video shot by the identified camera, collect and aggregate video shot by the identified camera,
When the sub-operation site side video aggregation device receives a notification from the operation management device that a failure has occurred in the main operation site side video aggregation device, the central side video aggregation device performs video collection and aggregation processing. Until it enters, the sub operation is interrupted and the main operation is entered, and the aggregated video is transmitted to the central video aggregation device,
A featured video collection method. A base that is provided in association with a base and is composed of a base-side video aggregating device that operates in the main and a base-side video aggregating device that operates as a sub, and collects and aggregates video captured by multiple cameras installed at the base It is executed by a video collection system that is composed of a side video aggregation device, a central video aggregation device that collects video aggregated by the site side video aggregation device, and an operation management device that manages the operation of the site side video aggregation device A video collection method,
The base operation video aggregation device that performs the main operation performs a main operation of transmitting the aggregated video to the central video aggregation device,
The sub-operation base-side video aggregation device performs a sub-operation of storing the aggregated video for a predetermined time without transmitting to the central-side video aggregation device,
When the operation management apparatus detects that a failure has occurred in the base-side video aggregating apparatus operating in the main operation, the operation management apparatus notifies the sub-operational base-side video aggregation apparatus, and further, When the operating site-side video aggregation device returns to the normal state from the failure, the sub-operation site-side video aggregation device is notified of this,
When the sub-operation site side video aggregation device receives a notification from the operation management device that a failure has occurred in the main operation site side video aggregation device, the site side video aggregation device returns to a normal state. Until the sub-operation is interrupted and the main operation is entered, and the aggregated video is transmitted to the central video aggregation device,
A featured video collection method. The video collection method according to claim 1 or 2,
The base-side video aggregating apparatus that performs the sub operation performs the sub-operation with a part of the cameras to be collected by the base-side video aggregating apparatus that performs the main operation as a processing target.
A featured video collection method. A base that is provided in association with a base and is composed of a base-side video aggregating device that operates in the main and a base-side video aggregating device that operates as a sub, and collects and aggregates video captured by multiple cameras installed at the base A video collection system composed of a side video aggregation device, a central side video aggregation device that collects videos aggregated by the site side video aggregation device, and an operation management device that manages the operation of the site side video aggregation device,
The base-side video aggregation device that performs the main operation includes means for performing a main operation of transmitting the aggregated video to the central-side video aggregation device,
The sub-operation base-side video aggregating apparatus performs a sub-operation of storing the aggregated video for a predetermined time without transmitting the aggregated video to the central-side video aggregating apparatus; and from the operation management apparatus to the main When receiving notification that a failure has occurred in the operating site side video aggregation device, until the central side video aggregation device enters the video collection and aggregation processing, the sub operation is interrupted and the main operation is entered, Means for transmitting the aggregated video to the central video aggregation device,
The operation management apparatus includes: means for detecting whether or not a failure has occurred in the base-side video aggregation device operating in the main operation; and the central-side video aggregation device and the sub-operation site when detecting the occurrence of the failure. A means for notifying the side video aggregating apparatus,
When the central video aggregation device receives notification from the operation management device that a failure has occurred in the main video aggregation device that operates in the main, the central video aggregation device has a camera that is the target of video collection. Means for identifying which is, and means for starting collection of video shot by the identified camera, and collecting and aggregating videos shot by the identified camera,
Characteristic video collection system. A base that is provided in association with a base and is composed of a base-side video aggregating device that operates in the main and a base-side video aggregating device that operates as a sub, and collects and aggregates video captured by multiple cameras installed at the base A video collection system composed of a side video aggregation device, a central side video aggregation device that collects videos aggregated by the site side video aggregation device, and an operation management device that manages the operation of the site side video aggregation device,
The base-side video aggregating apparatus that performs the main operation includes means for executing a main operation of transmitting the aggregated video to the central-side video aggregating apparatus;
The sub-operation base-side video aggregating apparatus performs a sub-operation of storing the aggregated video for a predetermined time without transmitting the aggregated video to the central-side video aggregating apparatus; and from the operation management apparatus to the main When receiving notification that a failure has occurred in the operating base-side video aggregation device, the sub-operation is interrupted until the base-side video aggregation device returns to the normal state, and the main operation is entered and consolidated. Means for transmitting video to the central video aggregation device,
The operation management device detects whether or not a failure has occurred in the base-side video aggregation device that performs the main operation, detects whether or not the failure has returned to a normal state, and detects the failure occurrence When the sub-operation site-side video aggregating device is notified, the sub-operation site-side video aggregating device is notified of the fact. Providing means for
Characteristic video collection system. The video collection system according to claim 4 or 5,
The base-side video aggregating apparatus that performs the sub operation performs the sub-operation with a part of the cameras to be collected by the base-side video aggregating apparatus that performs the main operation as a processing target.
Characteristic video collection system.   A video collection program for causing a computer to execute processing used to realize the video collection method according to claim 1.   A computer-readable recording medium having recorded thereon a video collection program for causing a computer to execute processing used to implement the video collection method according to claim 1.

Images