JP4775931B2 - Image processing apparatus, image processing system, image processing method, and program - Google Patents

Description

  The present invention relates to an image processing apparatus, an image processing system, an image processing method, and a program for causing a computer to execute the image processing method, and particularly records an image taken by a monitoring camera and analyzes the recorded image. The present invention relates to an image processing apparatus, an image processing system, an image processing method, and a program.

  Conventionally, surveillance cameras for crime prevention purposes have been installed in places where outsiders such as office buildings, factories, and warehouses have trouble entering, or places that handle direct money such as financial institutions. A monitoring system that records an image taken by the monitoring camera as evidence is known.

  In this conventional monitoring system, a video signal captured by a monitoring camera is repeatedly overwritten on a recording medium within the range of its storage capacity, constantly written, and recording is performed when an abnormality (event) is detected by an abnormality detection sensor. There is a type in which the apparatus is set to a recording mode, and video signals for a predetermined time including before the occurrence of an event are sent from the recording medium to the recording apparatus in the oldest order for recording (Patent Document 1).

  As another form of the conventional monitoring system, state change information is stored in time series, desired state change information and alarm-return history information are displayed in response to a display request from the operator, and the operator displays the state change information. There is one that monitors the contents (Patent Document 2).

  As another form of the conventional monitoring system, for example, an image of about 1 to 2 frames per second is continuously recorded on a video tape or the like, and the video tape is replaced in about one or two days. The ones that record the surveillance images are also widely used mainly in convenience stores. When this monitoring image is recorded, the recording time for each image frame is added to the monitoring image and recorded on the video deck that performs recording. In addition, when an event does not occur, a product is also provided that stores an image on a recording medium while sequentially switching each camera at a predetermined interval, and stores an image of the event occurrence location when the event occurs.

JP 2000-350163 A Japanese Patent Laid-Open No. 7-210244

  However, in the above-described conventional monitoring system, for example, when a plurality of monitoring cameras are arranged in a monitoring area and images are continuously captured and recorded by each monitoring camera, an event is detected by a certain monitoring camera. At that time, it was not possible to easily confirm the captured image of the other monitoring camera when the event occurred. In addition, when confirming a captured image of another monitoring camera at the time of the event occurrence, it is extracted from images continuously captured by the other monitoring camera based on event information from the monitoring camera that detected the event. It was necessary to perform complicated processing such as recording. As a result, there is a problem that it is difficult to easily grasp the cause and the situation of the event. In addition, when an event has not occurred, there is a problem that it is difficult to prove the event occurrence time when each camera is sequentially switched at a predetermined interval.

  The present invention has been made to solve the above-described problems, and it is possible to easily grasp the cause and the state of occurrence of an event without performing complicated processing, and to easily prove when the event occurs. Abstract: An image processing apparatus, an image processing method, and a program are provided.

An image processing system of the present invention is an image processing system including a client terminal and an image processing device that can communicate with a plurality of imaging devices including an event detection unit, and the image processing device captures images with the plurality of imaging devices. An image receiving means for receiving the received image, an image recording control means for controlling the image received by the image receiving means to be stored in a storage area, and an event detection unit for each of the photographing devices that has received a setting at the client terminal And at least one of the plurality of photographing devices at the date and time when the event is detected based on the control schedule of the event detecting unit for each of the photographing devices stored in the schedule storage unit . event information receiving that receives event information detected by the event detecting unit of the first imaging device And means, the event information received by said event information receiving means, and an image received by the image receiving means, and associated information storage means for storing in association with the captured the image first image capturing apparatus, Image acquisition means for acquiring an image of the event selected to be played back on the client terminal, and the client terminal has a control schedule for detecting the event information of an event detection unit included in the plurality of imaging devices. A schedule setting accepting unit for accepting settings, an event information stored in the associated information storage unit, and a reproduction image selection acceptance for accepting selection of an image of an event to be reproduced among images received by the image receiving unit And an image playback method for playing back the image of the event whose selection has been received by the playback image selection receiving unit. Provided with a door.

An image processing apparatus according to the present invention is an image processing apparatus capable of communicating with a plurality of imaging devices including an event detection unit, and includes an image receiving unit that receives images captured by the plurality of imaging devices, and the image receiving unit. An image recording control unit that controls to store the image received in the storage area, a schedule storage unit that stores a control schedule of the event detection unit for each of the imaging devices whose settings are received by the client terminal, and the schedule storage unit Based on the stored control schedule of the event detection unit for each imaging device, event information detected by the event detection unit of at least one first imaging device among the plurality of imaging devices at the date and time when the event is detected. Event information receiving means for receiving, the event information received by the event information receiving means, and the image An association information storage means for associating and storing the image received by the communication means and the first photographing device that photographed the image, and an image for acquiring the image of the event selected to be reproduced by the client terminal Acquisition means .

An image processing method of an image processing system of the present invention is an image processing method of an image processing system including a client terminal and an image processing device that can communicate with a plurality of imaging devices including an event detection unit. The image receiving unit of the image processing device receives an image captured by the plurality of imaging devices, and the image recording control unit of the image processing device stores the image received in the image receiving step. An image recording control step for controlling to store in an area, and a schedule storage step for storing a control schedule of an event detection unit for each of the photographing devices for which the schedule storage unit of the image processing device has received a setting at the client terminal; Before the event information receiving means of the image processing apparatus stores it in the schedule storing step An event for receiving event information detected by the event detection unit of at least one first imaging device among the plurality of imaging devices at the date and time when the event is detected based on the control schedule of the event detection unit for each imaging device An information receiving step; and the associated information storage unit of the image processing apparatus receives the event information received in the event information receiving step, an image received in the image receiving step, and the first imaged imaged image. An association information storing step for associating and storing a device; and an image acquiring step in which the image acquisition means of the image processing device acquires an image of the event selected to be played back on the client terminal. In the terminal, the schedule setting accepting unit of the client terminal includes the plurality of imaging devices. An event detection unit that receives a setting of a control schedule for detecting the event information, and a reproduction image selection reception unit of the client terminal that stores the event information stored in the association information storage step. The reproduction image selection reception step for receiving selection of an image of an event to be reproduced among the images received in the image reception step, and the image reproduction means of the client terminal has received the selection in the reproduction image selection reception step And an image reproduction step for reproducing an image of the event.
An image processing device control method according to the present invention is a method for controlling an image processing device capable of communicating with a plurality of imaging devices including an event detection unit, wherein the image receiving means of the image processing device is the plurality of imaging devices. An image receiving step for receiving an image to be shot, an image recording control step for controlling the image recording control means of the image processing device to store the image received in the image receiving step in a storage area, and the image processing device The schedule storage unit stores the control schedule of the event detection unit for each of the imaging devices whose settings are received at the client terminal, and the event information reception unit of the image processing device stores the schedule in the schedule storage step. Based on the control schedule of the event detection unit for each photographing device, An event information receiving step for receiving event information detected by an event detection unit of at least one first imaging device among the plurality of imaging devices, and an association information storage unit of the image processing device includes the event information An association information storage step for storing the event information received in the reception step, the image received in the image reception step, and the first imaging device that captured the image in association with each other; and an image of the image processing device The acquisition means includes an image acquisition step of acquiring an image of the event selected to be played back on the client terminal.

A program according to the present invention is a program for causing a computer to execute an image processing method of an image processing system including a client terminal capable of communicating with a plurality of imaging devices including an event detection unit and an image processing device. In the apparatus, an image receiving step for receiving images photographed by the plurality of photographing devices, an image recording control step for controlling to store an image received in the image receiving step in a storage area, and a setting in the client terminal Based on the schedule storage step of storing the control schedule of the event detection unit for each imaging device received and the control schedule of the event detection unit for each of the imaging devices stored in the schedule storage step, First imaging of at least one of the plurality of imaging devices Event information receiving step for receiving event information detected by the event detecting unit, the event information received in the event information receiving step, the image received in the image receiving step, and the first image obtained by capturing the image An association information storing step of storing the image capturing device in association with one another, and an image acquisition step of acquiring an image of the event selected to be played back on the client terminal. A schedule setting receiving step for receiving a setting of a control schedule for detecting the event information, an event information stored in the associated information storing step, and an image receiving step of an event detecting unit included in a plurality of imaging devices; Of the received images, the image of the event to be played A reproduction image selection accepting step of accepting a selection, to execute an image reproduction step of reproducing an image of the event selection of which is accepted by the reproduction image selection accepting step to the computer.
The program of the present invention is a program for causing a computer to execute a control method of an image processing apparatus capable of communicating with a plurality of imaging apparatuses including an event detection unit, wherein the computer of the image processing apparatus An image receiving step for receiving an image captured by the image capturing device, an image recording control step for controlling the image received in the image receiving step to be stored in a storage area, and a setting for each of the image capturing devices for which a setting has been received by a client terminal Based on the schedule storage step of storing the control schedule of the event detection unit and the control schedule of the event detection unit for each of the imaging devices stored in the schedule storage step, the date and time of detecting the event, among the plurality of imaging devices Detected by the event detector of at least one first imaging device. An event information receiving step for receiving event information, the event information received in the event information receiving step, an image received in the image receiving step, and the first imaging device that captured the image are associated and stored. And an associated information storing step and an image obtaining step for obtaining an image of the event selected to be reproduced by the client terminal.

According to the present invention, without performing annoyance miscellaneous processing, it is possible to easily grasp the cause or occurrence of only events viewing the obtained image. In particular, when the photographing apparatus is used as a security camera, it is possible to quickly grasp the cause and situation of occurrence of an emergency situation that has been impossible in the past, and further prove the time of occurrence of the emergency situation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing a configuration of an image processing system (monitoring system) according to an embodiment of the present invention.
This image processing system corresponds to the network 100 that constitutes the image processing system, a plurality of camera servers 400 that capture images in the arranged surveillance area, and the image processing apparatus according to the embodiment of the present invention. A recording server 200 that records an image from the camera server 400, and a client 300 that performs various settings of the recording server 200 based on an instruction from the user, a playback display of an image captured by the camera server 400, and the like are provided. In addition, the recording server 200, the client 300, and the camera server 400 are configured to be able to communicate with each other via a communication line of the network 100.

  In addition, the camera server 400 is provided with an event detection unit 400a that detects an abnormality (hereinafter referred to as an event) in the imaging region. Here, as an event detected by the event detection unit 400a of the camera server 400, for example, a sensor event in which a change in the environment at a position where the camera server 400 is disposed is detected by a sensor, and a shooting to be taken by the camera server 400 is taken. In the region, there is a motion detection event for detecting that the motion of the captured image in the capturing region has reached a predetermined level. Examples of sensor events include sound detection, temperature change detection, atmospheric pressure change detection, vibration detection, light detection, infrared ray blocking detection, gravity abnormality detection, magnetic change detection, and door opening / closing detection. Etc.

  FIG. 2 is a diagram showing a hardware configuration of a computer system in the recording server (image processing apparatus) 200 according to the embodiment of the present invention.

  In FIG. 2, the CPU 201 comprehensively controls each device connected to the system bus 204. In addition, the ROM 203 or the external memory 211 is used to realize at least a part of a basic input / output system (BIOS) and an operating system (OS), which are control programs of the CPU 201, and various functions described later of each server or each client. The program is stored.

  The RAM 202 functions as a main memory, work area, temporary save area, and the like for the CPU 201. The CPU 201 implements various processes by loading a program necessary for executing the process into the RAM 203 and executing the program.

  The input controller 205 controls input from the keyboard (KB) 209. In this embodiment, KB is applied as an input device, but it is also possible to apply a pointing device such as a mouse, a patch panel, or the like.

  The video controller 206 controls display on a CRT display (CRT) 210. In this embodiment, the CRT is applied as the display device, but a display device such as a liquid crystal can also be applied. Note that the CPU 201 enables display on the CRT 210 by executing outline font rasterization processing on a display information area in the RAM 203, for example. In addition, the CRT 210 allows a user instruction with a mouse cursor (not shown) on the CRT 210.

  The memory controller 207 includes a network video recorder program storage unit 212 for storing a boot program, a definition file storage unit 213 for storing definition files for realizing various functions, and various tables for storing tables for realizing various functions. Controls access to the external memory 211 including a storage unit 214, a recording data storage unit 215 that stores recording data of each image continuously captured by each camera server 400, and the like. In addition, the camera server 400 that has detected the occurrence of an event controls access to the external memory 216 that stores an image when the event occurs. Examples of the external memories 211 and 216 include a hard disk (HD) and a flexible disk (FD).

  The communication I / F controller 208 executes communication control processing with an external device via the communication line of the network 100. For example, the communication I / F controller 208 can perform Internet communication using TCP / IP.

  FIG. 3 is a diagram showing various masters, various recording media, and various data for processing an image from each camera server 400 in the recording server 200 according to the embodiment of the present invention. Here, FIG. 3A shows a network camera management master 231 listing various management items for managing each camera server 400, and FIG. 3B shows various types for controlling each camera server 400. A network camera control master 232 listing control items is shown. FIG. 3C shows an event analysis processing master 233 listing various analysis processing items when an event occurs in the camera server 400, and FIG. Shows an external memory 211 that is a recording medium for normal recording for recording each image continuously taken by each camera server 400, and FIG. 3E shows the occurrence of an event of the camera server 400 that detected the occurrence of the event. FIG. 3F shows a camera server 400 that detects the occurrence of a sensor event. FIG. A sensor event management master 234 listing various management items for management is shown, and FIG. 3G shows a motion detection event listing various management items for managing the camera server 400 that has detected the occurrence of a motion detection event. FIG. 3G shows analysis display data displayed on the client 300, and FIG. 3H shows thumbnail data displayed on the client 300. FIG.

  The network camera management master 231 in FIG. 3A has various management items such as “camera server ID”, “camera server name”, “camera name”, “location name”, and “zone name”. The network camera management master 231 is stored in the definition file storage unit 213 or the various table storage unit 214 of the external memory 211, for example. As the camera server ID that is information for specifying the camera server, for example, an ID number of the camera server, an IP address of the camera server, a MAC address, or the like can be used.

  The network camera control master 232 in FIG. 3B includes “camera server ID”, “normal recording pan value”, “normal recording tilt value”, “normal recording zoom value”, “normal recording frame rate value”, “ “Sensor Event Recording Pan Value”, “Sensor Event Recording Tilt Value”, “Sensor Event Recording Zoom Value”, “Sensor Event Recording Frame Rate Value”, “Sensor Event Recording Setting Time Value”, “Motion Detection Event Recording Frame Rate Value” There are various control items such as “motion detection event recording setting time value”. The network camera control master 232 is stored in, for example, the definition file storage unit 213 or the various table storage unit 214 of the external memory 211. As the camera server ID that is information for specifying the camera server, for example, an ID number of the camera server, an IP address of the camera server, a MAC address, or the like can be used.

  The event analysis processing master 233 in FIG. 3C includes “camera server name display”, “camera name display”, “zone name display”, “location name display”, “event start time display”, “event end time”. There are various analysis processing items such as “display”, “setting of a regular backup trigger of recorded data when an event occurs”, “original data automatic deletion after backup”. The event analysis processing master 233 is stored, for example, in the definition file storage unit 213 or the various table storage unit 214 of the external memory 211. Here, the event analysis processing master 233 may be stored in the recording medium 216 for event occurrence.

  The recording medium for normal recording in FIG. 3D corresponds to the external memory 211 in FIG. The event occurrence recording medium in FIG. 3 (e) corresponds to the external memory 216 in FIG.

  The sensor event management master 234 in FIG. 3F includes “sensor event ID”, “camera server ID”, “time information when the sensor event is ON”, “time information when the sensor event is OFF”, and “sensor event recording”. Pan value, Sensor event recording tilt value, Sensor event recording zoom value, Sensor event recording frame rate value, Sensor event recording setting time value, Sensor event recording data storage location, Sensor There are various management items such as “file name of event recording data”. As the camera server ID that is information for specifying the camera server, for example, an ID number of the camera server, an IP address of the camera server, a MAC address, or the like can be used.

  The motion detection event management master 235 in FIG. 3G includes “motion detection event ID”, “camera server ID”, “time information when the motion detection event is ON”, “time information when the motion detection event is OFF”, “Motion Detection Event Recording Pan Value”, “Motion Detection Event Recording Tilt Value”, “Motion Detection Event Recording Zoom Value”, “Motion Detection Event Recording Frame Rate Value”, “Motion Detection Event Recording Setting Time Value”, “Motion Detection There are various management items such as “storage location of event recording data” and “file name of motion detection event recording data”. As the camera server ID that is information for specifying the camera server, for example, an ID number of the camera server, an IP address of the camera server, a MAC address, or the like can be used.

  The analysis display data shown in FIG. 3G is a work file used when performing analysis display. The thumbnail data in FIG. 3H is a work file used when displaying a thumbnail image.

  FIG. 4 is a flowchart of the basic operation setting process of the camera server 400 of the recording server 200 according to the embodiment of the present invention. The flowchart of this process is performed by communication between the recording server 200 and the client 300. Here, the right side of FIG. 4 shows a user operation on the client 300 or a display screen displayed on the client 300.

  First, when an instruction to call a camera basic setting screen is issued from the client 300 by a user operation, in step S1001, the CPU 201 generates a camera basic setting screen based on the network management master 231 and displays the camera basic setting screen on the client. To 300. The client 300 displays the received camera basic setting screen.

  FIG. 12 is a diagram illustrating an example of a camera basic setting screen displayed on the client 300. The location / zone display area 1210 displays that the location is “Shinagawa head office” and the zone is “presentation room 1”. When the location or zone addition processing is performed, “location addition” or “zone addition” provided above the location / zone display area 1210 is selected to perform the additional processing. In the camera server display area 1220, the currently set camera server is displayed. When searching for a camera server according to the selected location / zone, “camera server search” provided above the camera server display area 1220 is selected to perform search processing. When adding, editing, or deleting a camera server, select “add camera server”, “edit camera server”, or “delete camera server” provided above the camera server display area 1220, respectively. Perform the process.

  Subsequently, when an instruction to call the camera control setting screen is issued from the client 300 by the user's operation, the CPU 201 generates a camera server control setting screen based on the network management master 231 and the network camera control master 232 in step S1002. . The communication I / F controller 208 transmits the camera server control setting screen to the client 300. The client 300 displays the received camera server control setting screen.

13 to 17 are diagrams illustrating an example of the camera server control setting screen displayed on the client 300. FIG.
First, the camera server control setting screen of FIG. 13 is displayed, and basic items such as the settings of the IP address of the camera server 400, the analog camera connected to the camera server 400, and the storage location of the recording data are set by the user's operation. The The set information is recorded in the network management master 231 in the process of step S1003.

  Subsequently, on the camera server control setting screen of FIG. 14, items such as a recording schedule and a recording setting are set by a user operation. Specifically, in the recording schedule display area 1410, the start and end times of recording and the day of the week for recording can be set. In the recording setting display area 1420, recording mode setting, preset setting, and video size setting can be performed by the user's operation. Here, the recording mode is set by “always recording” 1421, “motion detection recording” in which an image taken by the camera server is recorded in the event occurrence recording medium 216 when a motion detection event occurs in the camera server. 1422, “sensor recording” 1423 modes for recording an image taken by the camera server in the event occurrence recording medium 216 when a sensor event occurs in the camera server are provided. It is also possible to select a plurality of and perform each recording process. When “always recording” 1421 is selected, the frame rate (fps) can be set by a user operation. When “motion detection recording” 1422 and “sensor recording” 1423 are selected, the user can select a “setting” button provided for each mode, and a screen for performing detailed settings shown below is displayed. Is displayed.

  FIG. 15 is a diagram showing an example of a sensor setting screen displayed when the setting button for sensor recording in FIG. 14 is selected. The sensor setting screen shown in FIG. 15A includes a setting area 1510 for “recording with this sensor” for recording when the sensor of the event detection unit 400a provided in the camera server is turned on (or off). A sensor event priority setting area 1520, a camera angle setting area 1530 when a sensor event occurs, and a recording setting area 1540 when a sensor event occurs are provided.

Here, there are two types of setting methods for setting the camera angle by a user operation.
First, as a first setting method, the camera angle screen at the home position shown on the preview screen 1532 is selected to display the display screen shown in FIG. 15B, and the eight directions displayed on the display screen are displayed. By selecting the arrow screen, setting for changing the camera angle in the selected direction is performed. At this time, if the screen shown by the magnifying glass (loupe) located at the center of the display screen shown in FIG. 15B is selected, the zoom of the camera can be changed and set. Specifically, when the magnifying glass screen indicated by “+” positioned at the upper part in the central portion is selected, zooming is performed. On the other hand, when the magnifying glass screen indicated by “−” positioned at the lower central portion is selected, the screen is reduced. Zoom.

  Subsequently, as a second setting method, there is a setting method using a preset setting area 1531. In this preset setting area 1531, camera angles other than the preset home position are registered, and setting is performed by selecting a camera angle registered in the preset setting area 1531. In this embodiment, eight camera angles “Preset01 to Preset08” shown in FIG. 15B are registered.

  In the recording setting area 1540, the maximum frame rate for recording when a sensor event is generated by a user operation and the recording time before and after the sensor event occurs can be set. Here, when the recording time before the event is set, for example, in the recording server 200, 16 MB of physical memory per camera server is allocated as physical memory on the recording server and shot. The image is once written in this memory and is waiting to be written to the HDD for the recording time before the sensor event. If no event occurs, it is recorded in the recorded data storage unit 215 of the external memory 211 as it is. When an event occurs, an image taken from the time before the event can be recorded on the event occurrence recording medium 216. By performing such processing, the image before the event is recorded on the event occurrence recording medium 216.

  Next, FIG. 16 is a diagram showing an example of a sensor setting screen displayed when the setting button for motion detection recording in FIG. 14 is selected. The motion detection setting screen shown in FIG. 16 includes a motion detection setting region 1610, a motion detection event priority setting region 1620, a recording setting region 1630 when a motion detection event occurs, and a motion detection region display screen. 1640 is provided. In addition, the motion detection area in the present embodiment is an area indicated by 1641 on the motion detection area display screen 1640.

  In the motion detection setting area 1610, the setting of motion detection means, the setting of the frame rate in motion detection, the setting of sensitivity switching, the setting of the sensitivity level, the setting of the area ratio in motion detection, the duration of the motion detection are performed in the motion detection setting area 1610. Settings can be made. Here, it is determined that the motion is detected in the video in the motion detection area 1641 with the set sensitivity, the amount of motion change in the video is 5.0% or more in area ratio, and the time is 1.0. This is a case of continuing for more than a second.

  In the recording setting area 1630, the maximum frame rate for recording when a motion detection event occurs by the user's operation and the recording time before and after the motion detection event occurs can be set.

  When the camera server control setting in FIG. 14, the sensor recording setting in FIG. 15 and the motion detection recording setting in FIG. 16 are completed in each camera server 400, the recording schedule screen in each camera server 400 shown in FIG. Created.

  FIG. 17 is a diagram showing an example of a weekly schedule screen of each camera server 400 managed by the recording server 200. This schedule screen includes four camera servers located in Shimomaruko, Tokyo, one camera server located in Shinjuku, Tokyo, and one camera server located in the Sydney Opera House. The weekly schedule at is shown. For example, in the camera server of “VCS1 by windouws” arranged in Shimomaruko, Tokyo, “always recording”, “motion detection recording” and “sensor recording” are set throughout the month, Tuesday,. . In addition, for example, in the camera server of “VCS1 by windouws2” installed in Shimomaruko, Tokyo, “motion detection recording” from 0:00 to 8:00 on Monday, Tuesday,. “Always recording” is set for the interval, and “Sensor recording” is set for the period from 17:00 to 0:00. As described above, the recording mode in each camera server 400 can be set by performing various settings in FIGS. 14 to 16.

  In FIG. 17, it is possible to set not only a normal weekly schedule but also a specific schedule. By selecting “specific schedule” provided above the weekly schedule display area of FIG. 17, the recording schedule of the recording server 200 on a specific day can be set. At this time, the recording schedule of the recording server 200 is scheduled with priority given to the recording schedule on a specific day.

  When the camera server control settings of FIGS. 13 to 17 are made by a user operation, the set information is sent from the client 300 to the recording server 200.

  Subsequently, returning to the flowchart of FIG. 4, in step S1003, the CPU 201 rewrites the network camera management master 231 based on the information set in FIG. 13 and controls the network camera based on the information set in FIGS. Rewrite master 232.

  Subsequently, when an instruction to call the event analysis process control input screen is issued from the client 300 by a user operation, in step S1004, the CPU 201 selects a display item at the time of the event analysis aggregation process based on the event analysis process master 233. . The communication I / F controller 208 transmits the display item to the client 300. The client 300 displays an event analysis process control input screen for performing various settings when an event occurs in consideration of the received display items at the time of event analysis aggregation processing.

  FIG. 18 is a diagram showing an example of an event analysis process control input screen displayed on the client 300. This event analysis process control input screen is provided with an event notification setting area 1810, an event analysis process (display) item setting area 1820, and an event recording data backup setting area 1830.

  In the event notification setting area 1810, settings for sending event information mail when an event occurs and settings for using POP before SMTP can be performed.

  An event analysis processing (display) item setting area 1820 includes camera server name display settings, camera name display settings, zone name display settings, location name display settings, event start time display settings, and event end time. Display settings can be configured.

  In the event recording data backup setting area 1830, it is possible to set the periodic backup, the frequency (period or for each data capacity) when the periodic backup is set, and the data deletion after the periodic backup. It has become. In addition, in the setting item 1831 for regular backup, when the selection not to perform regular backup is made, the above-described selection in the setting of regular backup frequency and the setting for deleting data after regular backup becomes unnecessary. Display the area grayed out. In addition, when the setting for each data capacity is selected at the frequency of setting the regular backup, the desired data capacity (MB, GB, etc.) is pulled down by pulling down “▼” in the data capacity selection display area 1832. ) Is selected.

  Then, the recording server 200 receives the information set on the event analysis processing control input screen of FIG. 18 by the user's operation. In step S1004, the event analysis processing master 233 is rewritten based on the information set in the event analysis processing (display) item setting area 1820 by the user's operation.

  In step S <b> 1005, the CPU 201 determines whether the information on the setting for periodic backup of the recorded data at the time of the event received from the client 300 is to be backed up. If it is determined that backup is not performed as a result of the determination, the process advances to step S1007. On the other hand, if it is determined in step S1005 that backup is to be performed, the process proceeds to step S1006.

  In step S <b> 1006, the CPU 201 rewrites the event analysis processing master 233 based on information set in the event recording data backup setting area 1830 received from the client 300 to set backup.

  Subsequently, in step S1007, the memory controller 207 starts processing to continuously record each image from each camera server 400 in the external memory 211 that is a normal recording medium.

  Through the processes in steps S1001 to S1007 described above, the basic operation setting process of each camera server 400 in the recording server 200 is performed.

  Next, processing when a sensor event is detected by a certain camera server 400 during normal recording in step S1007 will be described.

  FIG. 5 is a flowchart of processing when a sensor event is detected in the camera server 400 during normal recording in the recording server 200 according to the embodiment of the present invention. The right side of FIG. 5 shows processing of the camera server 400 that has detected the sensor event.

  First, in step S2001, the CPU 201 determines whether or not the sensor switch of the event detection unit 400a provided in the camera server 400 is turned on. As a result of this determination, if it is determined that the sensor switch is not on, the process waits in step S2001. On the other hand, if it is determined in step S2001 that the sensor switch has been turned on, the process proceeds to step S2002.

  Subsequently, in step S2002, the CPU 201 acquires a sensor event recording pan value, a sensor event recording tilt value, a sensor event recording zoom value, a sensor event recording frame rate value, and a sensor event recording setting time value from the network camera control master 232. To do.

  Subsequently, in step S2003, the communication I / F controller 208 detects the sensor event based on the information (pan value, tilt value, zoom value, frame rate value, and set time value) related to the sensor event recording acquired in step S2002. Send to server 400. The camera server 400 that has received the information related to the sensor event recording performs shooting under conditions based on the information, and transmits the captured image to the recording server 200.

  Subsequently, in step S2004, the memory controller 207 starts a process of recording the captured image transmitted from the camera server 400 on the event occurrence recording medium 216. The photographed image sent at this time is recorded on the event occurrence recording medium 216 and is recorded at the normal recording frame rate value in the external memory 211 which is a normal recording medium. Note that the external memory 211, which is a normal recording medium, may be recorded at the frame rate value at the time of event occurrence.

  Subsequently, in step S2005, the CPU 201 detects information related to the sensor event of the camera server 400 (sensor event ID, camera server ID of the sensor event occurrence, sensor event occurrence time (sensor event ON time), camera PTZF value, sensor event recording data. Are stored in the sensor event management master 234.

  Subsequently, in step S2006, the CPU 201 determines whether or not the sensor switch of the event detection unit 400a remains on. As a result of this determination, if it is determined that the sensor switch remains on, the process proceeds to step S2007, and when an event of a captured image of the camera server 400 that detected the sensor event by the memory controller 207 started in step S2004 occurs. The recording on the recording medium 216 is continued. Then, it returns to step S2006 and repeats the process of step S2007 until the sensor switch of the event detection part 400a turns off. On the other hand, as a result of the determination in step S2006, if it is determined that the sensor switch is OFF, the process proceeds to step S2008.

  Subsequently, in step S2008, the CPU 201 determines whether or not a preset sensor event recording time has elapsed. As a result of this determination, if it is determined that the sensor event recording time has not elapsed, the process proceeds to step S2007, and the camera server 400 that has detected the sensor event records the captured image on the event occurrence recording medium 216. continue. On the other hand, as a result of the determination in step S2008, if it is determined that the sensor event recording time has elapsed, the process proceeds to step S2009.

  Subsequently, in step S2009, the memory controller 207 ends the recording of the captured image on the event occurrence recording medium 216 in the camera server 400 that has detected the sensor event. Subsequently, in step S2010, the CPU 201 registers the sensor event end time (sensor event OFF time) in the sensor event management master 234.

  Subsequently, in step S2011, the CPU 201 acquires a normal recording pan value, a normal recording tilt value, a normal recording zoom value, a normal recording frame rate value, and a normal recording setting time value from the network camera control master 232. By acquiring each parameter of normal recording at this timing, even if the setting value of the camera server 400 of the network camera control master 232 is changed, the changed setting value can be reflected.

  Subsequently, in step S2012, the communication I / F controller 208 detects the sensor event based on the information related to normal recording (pan value, tilt value, zoom value, frame rate value, and set time value) acquired in step S2011. 400. The camera server 400 that has received the information related to the normal recording performs shooting under the condition based on the information and transmits the captured image to the recording server 200. Thereafter, the recording server 200 continuously records the captured image captured based on the information related to the normal recording in the external memory 211 which is a recording medium for normal recording. Note that, during the processing from step S2004 to step S2009, a captured image captured based on information related to sensor event recording is recorded in the external memory 211 that is the recording medium for normal recording.

  Through the processing in steps S2001 to S2012 described above, the processing of the recording server 200 when the sensor event is detected by the camera server 400 during normal recording is completed.

  FIG. 6 is a flowchart of processing when a motion detection event is detected by the camera server 400 during normal recording in the recording server 200 according to the embodiment of the present invention. The right side of FIG. 5 shows processing of the camera server 400 that has detected a motion detection event.

  First, in step S3001, the CPU 201 determines whether or not motion detection of the video signal has been detected in the motion detection area 1641 of the imaging area in the camera server 400 by the event detection unit 400a provided in the camera server 400 (motion detection on). Determine whether. As a result of this determination, if it is determined that motion detection is not on, the process waits in step S3001. On the other hand, as a result of the determination in step S3001, if it is determined that the motion detection is turned on, the process proceeds to step S3002.

  Subsequently, in step S3002, the communication I / F controller 208 receives and acquires the pan value, the tilt value, and the zoom value that are currently captured from the camera server 400 in which the motion is detected. Here, since the settings of each camera server 400 may be changed manually, the pan value, tilt value, and zoom value in the normal recording registered in the network camera control master 232 are not used. The respective values are obtained from the camera server 400. At this time, when the pan value, tilt value, and zoom value acquired from the camera server 400 are different from those registered in the network camera control master 232, each value registered in the network camera control master 232 is rewritten.

  Subsequently, in step S3003, the memory controller 207 starts a process of recording the captured image transmitted from the camera server 400 in the event occurrence recording medium 216. The photographed image sent at this time is recorded on the event occurrence recording medium 216 and at the same time on the external memory 211 which is a normal recording medium. The frame rate value is the same as that described in FIG.

  Subsequently, in step S3004, the CPU 201 determines information related to the motion detection event of the camera server 400 (motion detection event ID, camera server ID of motion detection event occurrence, motion detection event occurrence time (motion detection event ON time), camera PTZF value. , The storage location of motion detection event recording data, and the file name of motion detection event recording data) are registered in the sensor event management master 234.

  Subsequently, in step S3005, the CPU 201 determines whether or not the motion detection by the event detection unit 400a remains on. As a result of the determination, if it is determined that the motion detection remains on, the process proceeds to step S3006, and an event of the captured image of the camera server 400 that detected the motion detection event by the memory controller 207 started in step S3003 occurs. Recording on the time recording medium 216 is continued. Thereafter, the process returns to step S3005, and the process of step S3006 is repeated until motion detection by the event detection unit 400a is turned off. On the other hand, as a result of the determination in step S3005, if it is determined that motion detection is off, the process proceeds to step S3007.

  In step S3007, the CPU 201 determines whether a preset motion detection event recording time has elapsed. As a result of this determination, if it is determined that the motion detection event recording time has not elapsed, the process proceeds to step S3006, where the camera server 400 that detected the motion detection event stores the captured image on the event occurrence recording medium 216. Continue recording. On the other hand, as a result of the determination in step S3007, if it is determined that the motion detection event recording time has elapsed, the process proceeds to step S3008.

  Subsequently, in step S3008, the memory controller 207 ends the recording of the captured image on the event occurrence recording medium 216 in the camera server 400 that has detected the sensor event. Subsequently, in step S3009, the CPU 201 registers the motion detection event end time (sensor event OFF time) in the motion detection event management master 235.

  Subsequently, in step S3010, the memory controller 207 records the captured image from the camera server 400 only in the external memory 211, which is a normal recording medium, and returns to the normal recording state.

  Through the processing in steps S3001 to S3010, the processing of the recording server 200 when the motion detection event is detected in the camera server 400 during normal recording ends.

  Next, an analysis process of event contents recorded for each event will be described.

  FIG. 7 is a flowchart of the event analysis process of the recording server 200 according to the embodiment of the present invention. The flowchart of this process is performed by communication between the recording server 200 and the client 300. Here, the display screen displayed on the client 300 is shown on the right side of FIG. Further, in the flowchart of FIG. 7, the case where the event analysis is performed is described by taking a case of one week as an example.

  First, in step S4001, the CPU 201 determines whether or not the event analysis / counting button 1910 is selected by a user operation on the event analysis / counting viewer screen of the client 300 shown in FIG. If it is determined that the event analysis / counting button 1910 is not selected as a result of this determination, the process waits at step S4001 until the event analysis / counting button 1910 is selected. On the other hand, as a result of the determination in step S4001, if it is determined that the event analysis / counting button 1910 has been selected, the process proceeds to step S4002.

  Here, in the event analysis / aggregation viewer screen of the client 300 shown in FIG. 19, each image of each camera server 400 in the same monitoring area is displayed in the main display area 1940, and the sub display area 1940 is displayed. Each image of each camera server 400 in each monitoring area is displayed as a thumbnail image. A time chart provided below the event analysis / aggregation button 1910 shows a flag indicating the occurrence of each event. For example, a flag indicated by 1920 is a motion detection event occurrence flag, and a flag indicated by 1930 is a sensor event occurrence flag. By referring to this time chart, the occurrence frequency of each event can be understood at a glance.

  Subsequently, in step S4002, the CPU 201 performs a totaling process for all the events going back from today for seven days. Then, with reference to the event analysis processing master 233, analysis display data is generated. At this time, among the generated analysis display data, 1 indicating a display flag is added to display data for screen display.

  Subsequently, in step S4003, the memory controller 207 records the generated analysis display data in the external memory 211 or the like. Here, the generated analysis display data may be recorded in another memory such as the event occurrence recording medium 216.

  In step S4004, the CPU 201 generates a weekly event analysis table based on the analysis display data to which 1 indicating a display flag is added. Then, the communication I / F controller 208 transmits the weekly event analysis table to the client 300. The client 300 displays the received weekly event analysis table.

  FIG. 20 is a diagram showing an example of a weekly event analysis table displayed on the client 300. In the weekly event analysis table of FIG. 20, a calendar 2010, a monthly button 2020, and a day button 2030 are displayed, and the aggregation unit can be changed by selecting each button with a pointing device such as a mouse. In addition, the weekly event analysis table of FIG. 20 is also provided with a 1-week feed button 2060 and a 1-day feed button 2070 for performing date feeding. When the thumbnail display button 2040 is selected, one representative thumbnail image 2050 when each event occurs is displayed. In addition, the weekly event analysis table displays the number of weekly event occurrences 2091 obtained by tabulating the number of occurrences of each week's events (sensor events, motion detection events). Further, a daily event occurrence number 2092 in which the occurrence number of each day event (sensor event, motion detection event) is totaled is also displayed.

  Subsequently, in step S4005, the CPU 201 determines whether or not a date is specified from the calendar 2010 of the weekly event analysis table shown in FIG. If it is determined that there is a date designation as a result of this determination, the process advances to step S4006. In step S4006, the CPU 201 performs again the totaling process of all events in a total of one week for three days before and after the designated date. Then, with reference to the event analysis processing master 233, analysis display data is generated. At this time, among the generated analysis display data, 1 indicating a display flag is added to display data for screen display. Thereafter, the process returns to step S4003.

  On the other hand, as a result of the determination in step S4005, if it is determined that no date is specified, the process proceeds to step S4007.

  Subsequently, in step S4007, the CPU 201 determines whether or not the user has operated the 1-week feed button 2060 or the 1-day feed button 2070 in the weekly event analysis table shown in FIG. If it is determined that the one-week advance button 2060 or the one-day advance button 2070 has been operated as a result of this determination, the process advances to step S4008. In step S4008, the CPU 201 performs again the totaling process of all events for a total of one week for three days before and after the designated date. Then, with reference to the event analysis processing master 233, analysis display data is generated. At this time, among the generated analysis display data, 1 indicating a display flag is added to display data for screen display. Thereafter, the process returns to step S4003.

  On the other hand, as a result of the determination in step S4007, if it is determined that the 1-week advance button 2060 or the 1-day advance button 2070 is not operated, the process proceeds to step S4009.

  Subsequently, in step S4009, the CPU 201 determines whether or not the user has operated the thumbnail display button 2040 of the weekly event analysis table shown in FIG. As a result of the determination, if it is determined that the thumbnail display button 2040 has been operated, the process proceeds to step S4010. In step S4010, the CPU 201 generates thumbnail data for display from each image recorded on the event occurrence recording medium 216. Thereafter, the process returns to step S4003.

  On the other hand, as a result of the determination in step S4009, if it is determined that the thumbnail display button 2040 has not been operated, the process proceeds to step S4011.

  Subsequently, in step S4011, the CPU 201 determines whether or not the user has operated the monthly button 2020 in the weekly event analysis table shown in FIG. If it is determined that the monthly button 2020 has been operated as a result of the determination, the process proceeds to a monthly process in which a monthly event analysis table is newly displayed on the client 300 and processing is performed. On the other hand, if it is determined that the monthly button 2020 is not operated as a result of the determination in step S4011, the process proceeds to step S4012.

  Subsequently, in step S4012, the CPU 201 determines whether or not the user has operated the 1-day button 2030 of the weekly event analysis table shown in FIG. If it is determined that the 1-day button 2030 has been operated as a result of this determination, the process proceeds to 1-day processing in which the 1-day event analysis table is newly displayed on the client 300 for processing. On the other hand, if it is determined that the one-day button 2030 has not been operated as a result of the determination in step S4012, the process proceeds to step S4013.

  Subsequently, in step S4013, the CPU 201 determines whether or not the user has operated the end button 2080 of the weekly event analysis table shown in FIG. As a result of the determination, if it is determined that the end button 2080 has been operated, the process is terminated. On the other hand, if it is determined in step S4013 that the end button 2080 has not been operated, the process advances to step S5001 in FIG.

  Subsequently, in step S5001 in FIG. 8, the CPU 201 determines whether or not the aggregation target / camera designation button 2090 shown in FIG. 20 has been operated by the user. Here, the process proceeds to step S5001 even after the above-described monthly processing and one-day processing are completed. At this time, in the monthly processing, whether or not the aggregation target / camera designation button in the monthly event analysis table has been operated, and in the 1-day processing, whether or not the aggregation target / camera designation button in the daily event analysis table has been operated. to decide. In addition, from the following description, it demonstrates using the 1 day event analysis table | surface shown in FIG. However, the present invention can also be applied when using a weekly event analysis table and a monthly event analysis table.

  If it is determined as a result of the determination in step S5001 that the aggregation target / camera designation button 2090 has been operated, the aggregation unit changing process is performed for aggregation for each event designated by the user or for each designated camera server 400. Transition. On the other hand, as a result of the determination in step S5001, if it is determined that the aggregation target / camera designation button 2090 has not been operated, the process proceeds to step S5002.

  Subsequently, in step S5002, the CPU 201 determines whether or not the event (the thumbnail image 2110 in the event in the present embodiment) displayed in FIG. As a result of the determination, if it is determined that the selection has been made by double-clicking, the process proceeds to step S5003. On the other hand, as a result of the determination in step S5002, if it is determined that it is not selected by double clicking, the process proceeds to step S5004.

  Subsequently, in step S5003, the CPU 201 acquires an image at the event occurrence time of the event selected by double-clicking from the event occurrence recording medium 216, and reproduces the acquired event image 2120 on the screen.

  Subsequently, in step S5004, the CPU 201 determines whether or not the event displayed in FIG. 22 (in this embodiment, the thumbnail image 2110 in the event) is specified by clicking and the playback setting button 2210 is selected. Judging. As a result of the determination, if it is determined that the event is designated by clicking and the reproduction setting button 2210 is selected, the process proceeds to step S6001 in FIG. On the other hand, as a result of the determination in step S5004, if it is determined that the event is designated by clicking and the reproduction setting button 2210 is not selected, the process proceeds to step S5005.

  Subsequently, in step S5005, the CPU 201 determines whether or not the file output button 2220 displayed in FIG. 22 has been selected by the user. As a result of this determination, if it is determined that the file output button 2220 is not selected, the process advances to step S5009. On the other hand, if it is determined in step S5005 that the file output button 2220 has been selected, the process advances to step S5006.

  Subsequently, in step S5006, the CPU 201 converts the event analysis data currently tabulated for display into the SYLK file format, and generates analysis display data (step S5007). Subsequently, in step S5008, when the user selects to save the event analysis data as a SYLK file on the display screen of FIG. 23, the CPU 201 saves the generated analysis display data in the external memory 211 or the like.

  Subsequently, in step S5009, the CPU 201 determines whether or not the graph button 2230 displayed in FIG. 22 has been selected by the user. As a result of the determination, if it is determined that the graph button 2230 has been selected, the process proceeds to step S7001 in FIG. On the other hand, if the result of determination in step S5009 is that the graph button 2230 has not been selected, processing proceeds to step S5010.

  Subsequently, in step S5010, the CPU 201 determines whether or not the event displayed in FIG. 24 is specified by clicking by the user and the thumbnail output button 2420 is selected. As a result of the determination, if it is determined that the event is specified by clicking and the thumbnail output button 2420 is selected, the process proceeds to step S8001 in FIG. On the other hand, as a result of the determination in step S5010, if it is determined that the event is specified by clicking and the thumbnail output button 2420 is not selected, the process proceeds to step S4004 in FIG.

  Next, the processing when the event displayed in FIG. 22 in step S5004 in FIG. 8 is designated by clicking and the reproduction setting button 2210 is selected will be described with reference to FIG.

  First, in step S6001, the CPU 201 generates a recording / playback setting screen based on information of a designated event. Then, the communication I / F controller 208 transmits the recording / playback setting screen to the client 300. The client 300 displays the received recording / playback setting screen.

  FIG. 25 is a diagram showing an example of a recording / playback setting screen displayed on the client 300. This recording / playback setting screen is provided with an event information display area 2510 for displaying information of an event designated by the user and a detailed setting display area 2520 for recording data playback. Further, in the detailed setting display area 2520 for recording data playback, it is possible to perform playback settings for event recording images, playback settings for images before and after the event, and playback settings for other camera images at the same time as the event. It has become.

  Subsequently, in step S6002, the CPU 201 determines whether or not the “reproduce event recorded image” button 2521 in FIG. 25 has been selected by a user operation. As a result of the determination, if it is determined that the “playback of event recorded image” button 2521 is selected, the process advances to step S6005. On the other hand, as a result of the determination in step S6002, if it is determined that the “reproduce event recorded image” button 2521 is not selected, the process proceeds to step S6003.

  Subsequently, in step S6003, the CPU 201 determines whether or not the “play image before and after event” button 2522 in FIG. 25 is selected by the user's operation. As a result of this determination, if it is determined that the “play image before and after event” button 2522 is selected, the process advances to step S6004. On the other hand, as a result of the determination in step S6003, if it is determined that the “play image before and after event” button 2522 is not selected, the process advances to step S6006.

  Subsequently, in step S6004, the CPU 201 determines whether or not the time before and after the event instructed by the time setting unit 2523 before and after the event in FIG. As a result of the determination, if it is determined that at least one of the times before and after the event is not 0 seconds, the process proceeds to step S6009. On the other hand, as a result of the determination in step S6004, if it is determined that the time before and after the event is 0 second, the process proceeds to step S6004.

  If it is determined in step S6002 that the “playback of event recorded image” button 2521 has been selected, or if it is determined in step S6004 that both the time before and after the event are 0 seconds, then in step S6005 The CPU 201 acquires an image of the event from the event occurrence recording medium 216 and reproduces the acquired event image on the screen. Thereafter, the process proceeds to step S5004 in FIG.

  If it is determined in step S6003 that the “play also images before and after the event” button 2522 is selected, then in step S6006, the CPU 201 operates the “other camera at the same time as the event” in FIG. It is determined whether or not the “image playback” button 2524 has been selected. As a result of the determination, if it is determined that the “reproduce other camera image at the same time as the event” button 2524 is not selected, the process proceeds to step S5005 in FIG. On the other hand, as a result of the determination in step S6006, if it is determined that the “playback of other camera images at the same time as the event” button 2524 is selected, the process proceeds to step S6007.

  In step S6007, the CPU 201 selects the corresponding camera server 400 from the recording / playback setting screen of FIG.

  Subsequently, in step S6008, the CPU 201 reproduces image data at the corresponding time of the corresponding camera server 400 from the external memory 211 that is a normal recording medium.

  If it is determined in step S6004 that at least one of the times before and after the event is not 0 seconds, then in step S6009, the CPU 201 determines that the corresponding camera server 400 from the event occurrence recording medium 216. Image data is reproduced at the corresponding time.

  After the processing of step S6008 and step S6009 is completed, the process proceeds to step S5004 in FIG. Through the processes in steps S6001 to S6009 described above, the reproduction process when the event displayed in FIG. 22 is designated by clicking and the reproduction setting button 2210 is selected is completed.

  Next, a process when it is determined in step S5009 in FIG. 8 that the graph button 2230 displayed in FIG. 22 has been selected will be described with reference to FIG.

  First, in step S7001, the CPU 201 generates a summary graph selection screen. Then, the communication I / F controller 208 transmits a selection screen for the total graph to the client 300. The client 300 displays a selection screen for the received total graph.

  FIG. 26 is a diagram illustrating an example of a total graph selection screen displayed on the client 300. In the total graph selection screen, a bar graph selection area 2610 and a line graph selection area 2620 are provided. The bar graph selection area 2610 is activated by selecting a “bar graph” button 2611. The bar graph selection area 2610 can be set by “all events / all locations”, “by event / all locations”, and “by all events / location”. The line graph selection area 2620 is enabled by selecting a “line line” button 2621. The line graph selection area 2620 can be set by “all events / all locations”, “by event / all locations”, and “by all events / location”.

  Subsequently, in step S7002, the CPU 201 determines whether or not the “bar graph” button 2611 in FIG. 26 is selected by a user operation. As a result of the determination, if it is determined that the “bar graph” button 2611 is selected, the process advances to step S7003. On the other hand, if it is determined in step S7002 that the “bar graph” button 2611 is not selected, the process advances to step S7012.

  Subsequently, in step S7003, the CPU 201 determines whether or not the “all events / all locations” button 2612 in FIG. 26 has been selected by a user operation. As a result of this determination, if it is determined that the “all events / all locations” button 2612 has been selected, the process advances to step S7004. On the other hand, if it is determined in step S7003 that the “all events / all locations” button 2612 is not selected, the process advances to step S7006.

  Subsequently, in step S7004, the CPU 201 aggregates events in “all events / all locations” to generate analysis display data. Subsequently, in step S7005, the CPU 201 creates a bar graph for “all events / all locations” based on the analysis display data generated in step S7004. Then, the communication I / F controller 208 transmits the bar graph to the client 300. The client 300 displays a bar graph for the received “all events / all locations”.

  If it is determined in step S7003 that the “all events / all locations” button 2612 is not selected, then in step S7006, the CPU 201 operates the “event / all locations” button in FIG. It is determined whether or not 2613 has been selected. If it is determined that the “by event / all locations” button 2613 is selected as a result of the determination, the process advances to step S7007. On the other hand, if it is determined in step S7006 that the “by event / all locations” button 2613 has not been selected, the process advances to step S7009.

  Subsequently, in step S7007, the CPU 201 aggregates events in “by event / all locations” to generate analysis display data. Subsequently, in step S7008, the CPU 201 creates a bar graph for “by event / all locations” based on the analysis display data generated in step S7007. Then, the communication I / F controller 208 transmits the bar graph to the client 300. The client 300 displays a bar graph in the received “by event / all locations”.

  If it is determined in step S7006 that the “by event / all locations” button 2613 is not selected, then in step S7009, the CPU 201 operates the “all events / by location” button in FIG. It is determined whether 2614 is selected. If it is determined that the “all events / by location” button 2614 is selected, the process advances to step S7010.

  Subsequently, in step S7010, the CPU 201 aggregates events in “all events / by location” to generate analysis display data. Subsequently, in step S7011, the CPU 201 creates a bar graph for “all events / by location” based on the analysis display data generated in step S7010. Then, the communication I / F controller 208 transmits the bar graph to the client 300. The client 300 displays a bar graph for the received “all events / by location”.

  When the process of step S7005 is completed, when the process of step S7008 is completed, when the process of step S7011 is completed, or when it is determined in step S7009 that the “by event / location” button 2614 is not selected. Then, the process proceeds to step S5010 in FIG.

  If it is determined in step S7002 that the “bar graph” button 2611 has not been selected, then in step S7012, the CPU 201 has selected the “line graph” button 2621 in FIG. Judge whether or not. If it is determined that the “line graph” button 2621 is selected as a result of the determination, the process advances to step S7013.

  Subsequently, in step S7013, the CPU 201 determines whether or not the “all events / all locations” button 2622 in FIG. 26 has been selected by a user operation. As a result of this determination, if it is determined that the “all events / all locations” button 2622 has been selected, the process advances to step S7014. On the other hand, if it is determined in step S7013 that the “all events / all locations” button 2622 has not been selected, the process advances to step S7016.

  Subsequently, in step S <b> 7014, the CPU 201 aggregates events in “all events / all locations” to generate analysis display data. Subsequently, in step S7015, the CPU 201 creates a line graph for “all events / all locations” based on the analysis display data generated in step S7014. Then, the communication I / F controller 208 transmits the line graph to the client 300. The client 300 displays a line graph for the received “all events / all locations”.

  If it is determined in step S7013 that the “all events / all locations” button 2622 is not selected, then in step S7016, the CPU 201 operates the “event / all locations” button in FIG. It is determined whether or not 2623 is selected. As a result of the judgment, if it is determined that the "event-specific / all locations" button 2623 has been selected, the process proceeds to step S7017. On the other hand, if it is determined in step S7016 that the “by event / all locations” button 2623 is not selected, the process advances to step S7019.

  Subsequently, in step S <b> 7017, the CPU 201 aggregates events in “by event / all locations” to generate analysis display data. Subsequently, in step S7008, the CPU 201 creates a line graph in “by event / all locations” based on the analysis display data generated in step S7017. Then, the communication I / F controller 208 transmits the line graph to the client 300. The client 300 displays a line graph in the received “by event / all locations”.

  If it is determined in step S7016 that the “by event / all locations” button 2623 has not been selected, then in step S7019, the CPU 201 operates the “all events / by location” button in FIG. It is determined whether or not 2624 is selected. If it is determined that the “all events / by location” button 2624 has been selected as a result of this determination, the process advances to step S7020.

  Subsequently, in step S7020, the CPU 201 aggregates events in “all events / by location” to generate analysis display data. Subsequently, in step S7021, the CPU 201 creates a line graph for “all events / by location” based on the analysis display data generated in step S7020. Then, the communication I / F controller 208 transmits the line graph to the client 300. The client 300 displays a line graph in the received “all events / by location”.

  If it is determined in step S7012 that the “line graph” button 2621 has not been selected, the processing in step S7015 has been completed, the processing in step S7018 has been completed, the processing in step S7021 has been completed, or step S7019. If it is determined that the “all events / by location” button 2624 is not selected, the process proceeds to step S5010 in FIG.

  The graph display process in the event analysis when the graph button 2230 displayed in FIG. 22 is selected is completed by the processes in steps S7001 to S7021 described above.

  Next, processing when it is determined in step S5010 of FIG. 8 that the event displayed in FIG. 24 has been designated by clicking and the thumbnail output button 2420 has been selected will be described with reference to FIG.

  First, in step S8001, the CPU 201 extracts from the event occurrence recording medium 216 all the recorded data in the event unit (every event, every event within a certain time period, etc.) designated by the user in step S5010. The extracted recording data is converted into thumbnails to generate thumbnail data. Subsequently, in step S8002, the memory controller 207 records the generated thumbnail data in the external memory 211 or the like. Here, the generated thumbnail data may be recorded in another memory such as the event occurrence recording medium 216.

  Subsequently, in step S8003, the communication I / F controller 208 transmits thumbnail data to the client 300. The client 300 performs screen display based on the received thumbnail data.

  FIG. 27 is a diagram showing an example of an event image thumbnail display screen displayed on the client 300. On the event image thumbnail display screen, a thumbnail image 2710 is displayed for each event. Further, the thumbnail image 2710 is displayed at intervals of 2 seconds as shown in the “current setting” column of FIG. Here, the number of thumbnail images 2710 displayed for each event is different because the set value of the recording time is different for each event.

  In addition, on the event image thumbnail display screen, a “total event / camera designation” button 2720, a “time narrowing down” button 2730, and a “change thumbnail interval” button 2740 are displayed above the display area of the thumbnail image 2710. Is provided.

  Subsequently, in step S8004, the CPU 201 determines whether or not the “count target event / camera designation” button 2720 shown in FIG. 27 has been selected by the user's operation. As a result of this determination, if it is determined that the “total target event / camera designation” button 2720 has been selected, the total target event selected by the user (all events, only sensor events, only motion detection events) The process proceeds to a counting target event / camera designation process for changing the display of thumbnail images according to the counting target camera server selected by (all camera servers, only the designated camera server).

  On the other hand, as a result of the determination in step S8004, if it is determined that the “count target event / camera designation” button 2720 has not been selected, the process proceeds to step S8005.

  Subsequently, in step S8005, the CPU 201 determines whether or not the “time narrowing down” button 2730 shown in FIG. 27 has been selected by the user's operation. As a result of this determination, if it is determined that the “time narrowing down” button 2730 has been selected, it is displayed according to the time specified by the user (from ○ hour ○ minute ○ second to □ hour □ minute □ second). The process proceeds to a time narrowing process for narrowing down thumbnail images.

  On the other hand, as a result of the determination in step S8005, if it is determined that the “time narrowing down” button 2730 is not selected, the process proceeds to step S8006.

  In step S8006, the CPU 201 determines whether the “change thumbnail interval” button 2740 shown in FIG. 27 has been selected by the user's operation. As a result of this determination, if it is determined that the “change thumbnail interval” button 2740 has been selected, the thumbnail image to be displayed according to the thumbnail interval specified by the user (2.0 seconds in the example of FIG. 27). The processing shifts to a thumbnail interval changing process for changing the interval at.

  On the other hand, as a result of the determination in step S8006, if it is determined that the “change thumbnail interval” button 2740 is not selected, the process proceeds to step S4004 in FIG.

  Through the processes in steps S8001 to S8006 described above, the thumbnail image display process when the event displayed in FIG. 24 is specified by clicking and the thumbnail output button 2420 is selected is completed.

  According to the embodiment of the present invention, the recording server 200 starts a process (step S1007) of continuously recording each image captured by each camera server 400 in the recording data storage unit 215 of the external memory 211, and at least 1 When the occurrence of an event is detected by one camera server 400, each image taken by each camera server 400 is continuously recorded in the recording data storage unit 215, and the event occurrence period of the camera server 400 that detected the occurrence of the event Since the image taken in the event recording medium 216 different from the external memory 211 is recorded (step S2004, step S3003), the image recorded in the event occurrence recording medium 216 is browsed. It is possible to grasp the cause of the event and the situation of the event. Also, the event occurrence period is simple and quick without performing complicated extraction processing, compared to the case of extracting an image in the event occurrence period from each image recorded in the recorded data storage unit 215. Images can be acquired. In particular, when the camera server 400 is used as a security camera, it is possible to quickly grasp the cause and the situation of occurrence of an emergency situation that was impossible in the past, and further prove the time of occurrence of the emergency situation. .

  When the event detection by the camera server 400 that has detected the occurrence of the event is completed, the event detection recording medium 216 of the image of the camera server 400 is completed at the end of the event detection or after a predetermined time has elapsed from the end. Is finished (steps S2009 and S3008), the event occurrence recording medium 216 can be efficiently recorded.

  The recording server 200 also includes a search condition (event type, captured camera server 400 and captured time, etc.) and event information (event type information, information that identifies the camera server 400 that detected the occurrence of the event, Image is acquired from the event occurrence recording medium 216 based on the time information, etc. (step S5003), and the image associated with the acquired image is associated with information (information for identifying the camera server 400 that has imaged, the time of shooting) Information from the recorded data storage unit 215 based on the information and the location information of the photographed camera server, etc. (step S6008). Other images taken at the same time as the event period image of the camera server 400 that detected the It is possible to reproduce an image of Merasaba 400. As a result, it is possible to grasp in detail the cause and occurrence of the event.

  Also, events that match the search conditions are aggregated (step S4002, step S4006, step S4008), and display data for displaying the aggregated result is generated (step S4003). It is possible to quickly and easily analyze the occurrence tendency including the number of occurrences of the event, the occurrence time, and the occurrence position for a predetermined period of one week or one month.

  In addition, since the thumbnail data of the image recorded on the event occurrence recording medium 216 is generated (steps S8001 and S8002), it is possible to visually grasp the cause and the state of occurrence of the event.

  In addition, since the image recorded on the event occurrence recording medium 216 is regularly backed up (step S1006), safety against data storage can be improved.

  In the embodiment of the present invention, an external memory 211 that continuously records each image captured by each camera server 400 and an image captured during the event occurrence period of the camera server 400 that detected the occurrence of the event are displayed. Although an example in which the recording medium for event occurrence 216 to be recorded is provided in the recording server 200 has been described as an example, the present invention is not limited to this. For example, these recording media may be stored in the recording server 200. It may be provided in a database server provided outside to control recording of images on the storage medium.

  Also, the external memory for continuously recording each image captured by each camera server 400 and the event occurrence recording medium for recording the image captured during the event occurrence period are configured in the same storage means. Also good. In this case, for example, a plurality of large-capacity optical disk drives are separately recorded, or a partition of one large-capacity optical disk is divided, and continuously recorded images and images at the time of events are divided into the areas divided by the partitions. Both of them may be recorded. Furthermore, the same recording may be performed on a plurality of hard disks, or both may be recorded by dividing a partition of one hard disk. In this sense, recording to two “areas” may mean different storage media, and includes both cases where both a continuous recording image and an event image are recorded on one storage medium or storage device. Yes. Also, the event detection (step S2001 or step S3001) determines whether or not the event is detected after waiting for a predetermined time. However, the present invention is not limited to this, and the event image capturing process is started by hardware interrupt (IRQ). After the start of shooting, control may be performed in parallel with the shooting of the normal image.

  In the embodiment of the present invention, as an event detected by the event detection unit 400a of the camera server 400, a sensor event for detecting a change in the environment at the position where the camera server 400 is disposed, and the camera server 400. In the shooting area for shooting, the motion detection event for detecting that the movement of the shot image in the shooting area has reached a predetermined level has been described as an example. For example, it is detected that an IC card is inserted. It is also possible to apply IC tag detection or the like in which IC card detection or an IC tag is provided to detect a signal from the IC tag.

  Each means (FIG. 2) which comprises the video recording server 200 by embodiment mentioned above, and each step of the image processing method by the video recording server 200 (step S1001-step S1007 of FIG. 4, step S2001-step S2012 of FIG. 5, FIG. 6). Steps S3001 to S3010, Steps S4001 to S4013 of FIG. 7, Steps S5001 to S5010 of FIG. 8, Steps S6001 to S6008 of FIG. 9, Steps S7001 to S7021 of FIG. 10, Steps S8001 of FIG. S8006) can be realized by operating a program stored in a RAM or ROM of a computer. This program and a computer-readable recording medium storing the program are included in the present invention.

  Specifically, the program is stored in a recording medium such as a CD-ROM or provided to a computer via various transmission media. As a recording medium for storing the program, besides a CD-ROM, a flexible disk, a hard disk, a magnetic tape, a magneto-optical disk, a nonvolatile memory card, or the like can be used. On the other hand, as the transmission medium of the program, a communication medium (wired line such as an optical fiber, etc.) in a computer network (LAN, WAN such as the Internet, wireless communication network, etc.) system for propagating and supplying program information as a carrier wave A wireless line or the like.

  In addition, the functions of the above-described embodiments are realized not only by executing a program supplied by a computer, but also in cooperation with an OS (operating system) running on the computer or other application software. When the functions of the above-described embodiment are realized, or all or part of the processing of the supplied program is performed by a function expansion board or a function expansion unit of the computer, the functions of the above-described embodiment are realized. Such a program is also included in the present invention.

1 is a diagram illustrating a configuration of an image processing system according to an embodiment of the present invention. It is a figure which shows the hardware constitutions of the computer system in the video recording server concerning embodiment of this invention. It is the figure which showed the various masters for processing the image from each camera server, various recording media, and various data in the video recording server concerning embodiment of this invention. It is a flowchart of the basic operation | movement setting process of the camera server of the video recording server concerning embodiment of this invention. 6 is a flowchart of processing when a sensor event is detected by a camera server during normal recording in the recording server 200 according to the embodiment of the present invention. 5 is a flowchart of processing when a motion detection event is detected by a camera server during normal recording in the recording server according to the embodiment of the present invention. It is a flowchart of the event analysis process of the video recording server concerning embodiment of this invention. It is a flowchart of the event analysis process of the video recording server concerning embodiment of this invention. It is a flowchart of the event image reproduction process in the event analysis process of the recording server according to the embodiment of the present invention. It is a flowchart of the graph display process in the event analysis process of the video recording server concerning embodiment of this invention. It is a flowchart of the thumbnail image display process in the event analysis process of the video recording server concerning embodiment of this invention. It is the figure which showed an example of the camera basic setting screen displayed on a client. It is the figure which showed an example of the camera server control setting screen displayed on a client. It is the figure which showed an example of the camera server control setting screen displayed on a client. It is the figure which showed an example of the camera server control setting screen displayed on a client. It is the figure which showed an example of the camera server control setting screen displayed on a client. It is the figure which showed an example of the camera server control setting screen displayed on a client. It is the figure which showed an example of the event analysis process control input screen displayed on a client. It is the figure which showed an example of the event analysis / total viewer screen displayed on a client. It is the figure which showed an example of the weekly event analysis table displayed on a client. It is the figure which showed an example of the 1 day event analysis table displayed on a client. It is the figure which showed an example of the 1 day event analysis table displayed on a client. It is the figure which showed the display screen of the discharge setting of the event analysis data displayed on a client. It is the figure which showed an example of the 1 day event analysis table displayed on a client. It is the figure which showed an example of the setting screen of the recording reproduction displayed on a client. It is the figure which showed an example of the selection screen of the total graph displayed on a client. It is the figure which showed an example of the event image thumbnail display screen displayed on a client.

Explanation of symbols

100 Network 200 Recording Server 201 CPU
202 RAM
203 ROM
204 System bus 205 Input controller 206 Video controller 207 Memory controller 208 Communication I / F controller 209 KB (keyboard)
210 CRT
211 External memory (normal recording media)
212 Network video recorder program storage unit 213 Definition file storage unit 214 Various table storage unit 215 Recording data storage unit 216 External memory (recording medium for event occurrence)
300 Client 400 Camera server 400a Event detection unit

Claims (13)

An image processing system including a client terminal capable of communicating with a plurality of imaging devices including an event detection unit and an image processing device ,
The image processing apparatus includes:
Image receiving means for receiving images taken by the plurality of photographing devices;
Image recording control means for controlling the image received by the image receiving means to be stored in a storage area;
Schedule storage means for storing a control schedule of an event detection unit for each of the imaging devices that has received settings at the client terminal;
Based on the control schedule of the event detection unit for each imaging device stored in the schedule storage unit, the event detection unit of at least one first imaging device of the plurality of imaging devices detects the event at the date and time when the event is detected. an event information receiving means for receiving an event information,
Association information storage means for storing the event information received by the event information reception means, the image received by the image reception means, and the first photographing device that photographed the image in association with each other ;
Image acquisition means for acquiring an image of the event selected to be reproduced on the client terminal ;
With
The client terminal is
Schedule setting accepting means for accepting a setting of a control schedule for detecting the event information of an event detecting unit provided in the plurality of imaging devices;
Replay image selection accepting means for accepting selection of an image of an event to be replayed among the event information stored in the associated information storage means and the image received by the image receiving means;
Image reproduction means for reproducing an image of the event whose selection is received by the reproduction image selection reception means;
An image processing system comprising: The client terminal is
A second accepting selection of the second imaging device to reproduce the image captured by the second imaging device at the same time as the period of occurrence of the event together with the image of the event acquired by the image acquisition means. Further comprising a photographing device selection accepting means,
2. The image according to claim 1, wherein the image reproduction unit reproduces an image captured by the second imaging apparatus received by the second imaging apparatus selection reception unit together with an image of the event. Processing system. The client terminal is
Further comprising an acquisition time setting accepting means for accepting the setting of the acquisition time of the image before and after the event,
The image processing apparatus includes:
3. The image acquisition unit according to claim 1, wherein images acquired before and after the event occurrence period set by the acquisition time setting reception unit are acquired together with an image of the event occurrence period. The image processing system described. The event information detected by the event detection unit includes at least one of a change in temperature detection, vibration detection, light detection, infrared ray blocking detection, gravity abnormality detection, and door opening / closing detection by a sensor. A sensor event to be detected, and a motion detection event for detecting that the motion of the captured image in the imaging region has reached a predetermined level in the imaging region captured by each of the imaging devices ,
4. The image processing system according to claim 1, wherein the schedule setting reception unit receives a detailed setting of a schedule for detecting the motion detection event and the sensor event by the event detection unit. 5. . The event information includes event type information, information for specifying a photographing device including an event detection unit that detects the occurrence of the event , and event time information.
The reproduced image selection accepting means in the event of an image for receiving a selection, the type of the event, of the photographed image capturing apparatus and photographed time, claims 1 to 4, characterized in that it is selected by at least any one The image processing system according to any one of the above. It further comprises a search condition specifying means for specifying a search condition for searching for an image when an event occurs,
The image recording control means continuously records images taken by the plurality of photographing devices in the first recording area, and receives the event information when receiving the event information from at least one of the photographing devices. Control to record an image captured during the event occurrence period received from the transmitted imaging device in the second recording area;
The association information storage unit, the associations information, the event information and information for associating the image recorded on said image recorded in the second recording area the first recording area Remember
The search condition designating unit designates a search condition for searching for at least one of the images recorded in the first recording area and the images recorded in the second recording area. And
The image acquisition means acquires an image from the second recording area using the search condition designated by the search condition designation means and the event information, and associates another image associated with the acquired image with the association information. 6. The image processing system according to claim 1, wherein the image processing system is acquired from the first recording area using an image . The image recording control means further stores in the second recording area images captured before and after the event occurrence period received from the imaging device that transmitted the event information,
The image processing according to claim 6 , wherein the image acquisition unit acquires images taken before and after the event occurrence period from the second recording area together with the image of the event occurrence period. System . When the image recording control means determines that the detection of the event by the imaging device that has detected the occurrence of the event based on the event information has ended, the end of the event detection or after a lapse of a predetermined time from the end, The image processing system according to claim 6 , wherein control is performed so as to end recording of an image captured by the imaging apparatus that has detected the occurrence of the event in the second recording area. An image processing device capable of communicating with a plurality of imaging devices including an event detection unit ,
Image receiving means for receiving images taken by the plurality of imaging devices;
Image recording control means for controlling the image received by the image receiving means to be stored in a storage area;
Schedule storage means for storing a control schedule of the event detection unit for each of the imaging devices that has received the setting at the client terminal;
Based on the control schedule of the event detection unit for each imaging device stored in the schedule storage unit, the event detection unit of at least one first imaging device of the plurality of imaging devices detects the event at the date and time when the event is detected. an event information receiving means for receiving an event information,
Association information storage means for storing the event information received by the event information reception means, the image received by the image reception means, and the first photographing device that photographed the image in association with each other ;
Image acquisition means for acquiring an image of the event selected to be reproduced on the client terminal ;
The image processing apparatus comprising: a. An image processing method of an image processing system including a client terminal capable of communicating with a plurality of imaging devices including an event detection unit and an image processing device,
In the image processing apparatus,
An image receiving step in which the image receiving means of the image processing device receives images taken by the plurality of photographing devices;
An image recording control step of controlling the image recording control means of the image processing apparatus to store the image received in the image receiving step in a storage area;
A schedule storage step in which a schedule storage unit of the image processing apparatus stores a control schedule of an event detection unit for each of the imaging apparatuses that has received a setting at the client terminal;
The event information receiving means of the image processing device detects at least one of the plurality of imaging devices at the date and time when the event is detected based on the control schedule of the event detection unit for each imaging device stored in the schedule storage step. An event information receiving step for receiving event information detected by the event detection unit of the first imaging device;
An association information storage unit of the image processing device associates the event information received in the event information receiving step, the image received in the image receiving step, and the first imaging device that captured the image. An associated information storage step for storing;
An image acquisition unit of the image processing apparatus for acquiring an image of the event selected to be played back on the client terminal;
In the client terminal,
A schedule setting receiving step in which the schedule setting receiving means of the client terminal receives a setting of a control schedule for detecting the event information of an event detection unit included in the plurality of imaging devices;
A reproduction image in which the reproduction image selection accepting unit of the client terminal accepts selection of an image of an event to be reproduced among the event information stored in the association information storage step and the image received in the image reception step. A selection acceptance step;
An image reproduction step in which the image reproduction means of the client terminal reproduces the image of the event that has been selected in the reproduction image selection reception step;
An image processing method for an image processing system, comprising: A program for causing a computer to execute an image processing method of an image processing system including a client terminal capable of communicating with a plurality of imaging devices including an event detection unit and an image processing device,
In the image processing apparatus,
An image receiving step of receiving images taken by the plurality of photographing devices;
An image recording control step for controlling to store the image received in the image receiving step in a storage area;
A schedule storage step for storing a control schedule of an event detection unit for each of the imaging devices that has received a setting at the client terminal;
Based on the control schedule of the event detection unit for each imaging device stored in the schedule storage step, the event detection unit of at least one first imaging device of the plurality of imaging devices detects the event at the date and time when the event is detected. Event information receiving step for receiving the received event information;
An association information storage step for storing the event information received in the event information reception step, the image received in the image reception step, and the first imaging device that captured the image in association with each other;
An image acquisition step of acquiring an image of the event selected to be played on the client terminal;
To the computer,
In the client terminal,
A schedule setting reception step for receiving a setting of a control schedule for detecting the event information of an event detection unit included in the plurality of imaging devices;
A reproduction image selection reception step for receiving selection of an image of an event to be reproduced among the event information stored in the association information storage step and the image received in the image reception step;
An image reproduction step of reproducing an image of the event whose selection is received in the reproduction image selection reception step;
A program that causes a computer to execute. A method for controlling an image processing apparatus capable of communicating with a plurality of imaging devices including an event detection unit,
An image receiving step in which the image receiving means of the image processing device receives images taken by the plurality of imaging devices;
An image recording control step of controlling the image recording control means of the image processing apparatus to store the image received in the image receiving step in a storage area;
A schedule storage step in which the schedule storage means of the image processing apparatus stores a control schedule of an event detection unit for each of the imaging apparatuses that has received a setting at a client terminal;
The event information receiving means of the image processing device detects at least one of the plurality of imaging devices at the date and time when the event is detected based on the control schedule of the event detection unit for each imaging device stored in the schedule storage step. An event information receiving step for receiving event information detected by the event detection unit of the first imaging device;
An association information storage unit of the image processing device associates the event information received in the event information receiving step, the image received in the image receiving step, and the first imaging device that captured the image. An associated information storage step for storing;
An image acquisition step in which an image acquisition means of the image processing apparatus acquires an image of the event selected to be played back on the client terminal;
An image processing apparatus control method comprising: A program for causing a computer to execute a control method of an image processing apparatus capable of communicating with a plurality of imaging devices including an event detection unit,
In the computer of the image processing apparatus,
An image receiving step for receiving images taken by the plurality of photographing devices;
An image recording control step for controlling to store the image received in the image receiving step in a storage area;
A schedule storage step of storing a control schedule of the event detection unit for each of the imaging devices that has received the setting at the client terminal;
Based on the control schedule of the event detection unit for each imaging device stored in the schedule storage step, the event detection unit of at least one first imaging device of the plurality of imaging devices detects the event at the date and time when the event is detected. Event information receiving step for receiving the received event information;
An association information storage step for storing the event information received in the event information reception step, the image received in the image reception step, and the first imaging device that captured the image in association with each other;
An image acquisition step of acquiring an image of the event selected to be played on the client terminal;
A program for running

Images