JP2016103670A - Image management system and monitoring camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image management system capable of avoiding the centralization of processing loads on a center device in a normal time, and reducing a risk that image data are not transmittable from a monitor camera to the center device in the case of disaster.SOLUTION: An image management system includes: a monitor camera 1 installed in an installation object for capturing image data; and a center device 4 for storing the image data received from the monitor camera 1. The monitor camera 1 is configured to acquire wide-angle image data by photographing a predetermined range at a wide angle. The monitor camera 1 is configured to correct the distortion of the wide-angle image data generated due to the photography at the wide angle to generate corrected image data from the wide-angle image data, and to transmit the corrected image data to the center device 4. The monitor camera is configured to, when detecting the occurrence of a disaster, transmit the wide-angle image data to the center device 4 instead of the corrected image data.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an image management system including a monitoring camera that captures image data at a wide angle and a center device, and relates to a technique for transmitting image data from the monitoring camera to the center device.

  2. Description of the Related Art Conventionally, there is known a monitoring camera system in which a monitoring camera is installed in a property such as a facility or a building and its image is confirmed via a network or an abnormality is monitored at a remote monitoring center. Such a surveillance camera system is usually installed by a system installer for the purpose of monitoring an installation target, and only the system installer can handle camera images.

  On the other hand, there has been proposed a camera system that distributes video from a surveillance camera and transmits it externally and collects video information in a predetermined server when a disaster or the like occurs (see, for example, Patent Document 1). According to this camera system, it is possible to grasp the disaster situation in each place at the time of a disaster from the video of the surveillance camera.

  As a camera used in such a surveillance camera system, a camera that shoots with a super wide-angle lens such as an omnidirectional camera is known in order to shoot a wide range with a small number of cameras. In such a surveillance camera using an ultra-wide angle lens, a surveillance video is generated by correcting distortion of an image taken at an ultra-wide angle or cutting out a specific area.

  On the other hand, when the distortion correction is concentrated on the host computer that receives video transmission from the camera, for example, after performing image processing such as distortion correction on the camera side in order to avoid load concentration on the host computer. A technique for video transmission has been proposed (see, for example, Patent Document 2).

JP 2013-187760 A JP 2007-228531 A

  As described above, a camera that shoots with an ultra-wide-angle lens requires image processing to obtain surveillance video. However, as in Patent Document 1, video information is collected in a predetermined server when a disaster occurs. In this case, Patent Document 1 does not consider how such image processing should be performed.

  For example, when a disaster occurs, there is an increased possibility of communication failures such as disconnection of communication lines, power outages, network congestion, etc. When image processing is performed on the camera side as in Patent Document 2, transmission timing is delayed, The video may not be transmitted. However, for example, when an earthquake occurs, if there is a certain amount of time between the beginning of shaking and the occurrence of a power outage or network congestion, the video at the time of the disaster may be transmitted if the transfer is completed in a short time .

  The present invention has been made in view of the above-described problems. During normal times, it is possible to avoid the concentration of processing load on the center apparatus, and in the event of a disaster, image data can be transmitted from the monitoring camera to the center apparatus as soon as possible. An object is to provide an image management system.

  An image management system according to the present invention is an image management system including a monitoring camera that is installed on an installation target and captures image data, and a center device that stores image data received from the monitoring camera. An imaging unit that acquires wide-angle image data obtained by imaging a predetermined range at a wide angle, and an image that generates corrected image data from the wide-angle image data by correcting distortion of the wide-angle image data caused by imaging at a wide angle A correction unit; a communication unit that transmits the corrected image data to the center device; a disaster detection unit that detects the occurrence of a disaster in the installation target; and when the disaster detection unit detects the occurrence of a disaster, the corrected image data A control unit that performs transmission control for transmitting the wide-angle image data to the center device.

  With this configuration, the monitoring camera captures a predetermined range (monitoring area) at a wide angle and acquires wide-angle image data. Furthermore, the surveillance camera generates corrected image data in which distortion of the wide-angle image data is corrected. At normal times, the monitoring camera transmits the corrected image data to the center device. As a result, the processing load on the center device can be reduced as compared with the case where the distortion of the wide-angle image data is corrected by the center device. On the other hand, at the time of a disaster (when the occurrence of a disaster is detected), the surveillance camera promptly transmits wide-angle image data to the center device without waiting for generation of corrected image data. Thereby, at the time of a disaster, image data can be sent from the monitoring camera to the center device in a short time. Therefore, it is possible to avoid the concentration of processing load on the center device during normal times, and to reduce the risk that image data cannot be transmitted from the monitoring camera to the center device due to disconnection of communication lines or network communication failures in the event of a disaster. It is possible to check the situation in a monitor display device or the like.

  In the image management system of the present invention, when the center device receives wide-angle image data from the surveillance camera, the center device corrects distortion of the wide-angle image data and generates disaster image data from the wide-angle image data. You may provide the memory | storage part which memorize | stores the image process part, the said correction | amendment image data received from the said monitoring camera, and the said disaster image data produced | generated by the said image process part.

  With this configuration, when wide-angle image data is transmitted from the monitoring camera to the center device during a disaster, the center device generates and stores disaster image data in which distortion of the wide-angle image data is corrected. Thus, even when the corrected image data is not transmitted from the monitoring camera to the center device at the time of a disaster, the disaster image data can be generated by the center device and provided to the monitoring display device or the user terminal. It becomes possible.

  In the image management system of the present invention, the center device may further include a user display control unit that receives a request signal from a user terminal and transmits the disaster image data to the user terminal.

  With this configuration, in response to a request from the user terminal, the disaster image data obtained by correcting the wide-angle image data at the time of the disaster is transmitted from the center device to the user terminal. Thereby, even if the user (user) of the user terminal does not transmit the corrected image data from the monitoring camera to the center device at the time of the disaster, the disaster image data (distortion of the wide-angle image data at the center device) can be performed. (Corrected image data) can be confirmed.

  The surveillance camera of the present invention is a surveillance camera that is installed on an installation target and captures image data. The surveillance camera captures wide-angle image data obtained by capturing a predetermined range at a wide angle, and captures at a wide angle. An image correction unit that corrects distortion of the wide-angle image data caused by the generation and generates corrected image data from the wide-angle image data, an output unit that outputs the corrected image data to an external device, and the installation target A disaster detection unit that detects the occurrence of a disaster in the system, and a control unit that performs transmission control to transmit the wide-angle image data to the external device instead of the corrected image data when the disaster detection unit detects the occurrence of a disaster; It is equipped with.

  Also with this monitoring camera, as described above, the monitoring camera captures a predetermined range (monitoring area) at a wide angle and acquires wide-angle image data. Furthermore, the surveillance camera generates corrected image data in which distortion of the wide-angle image data is corrected. In normal times, the surveillance camera transmits the corrected image data to the external device. As a result, the processing load on the external device can be reduced as compared with the case where the distortion of the wide-angle image data is corrected by the external device. On the other hand, at the time of a disaster (when the occurrence of a disaster is detected), the surveillance camera promptly transmits wide-angle image data to the external device without waiting for generation of corrected image data. Thereby, at the time of a disaster, image data can be sent from an surveillance camera to an external device in a short time. Therefore, it is possible to avoid the concentration of processing load on the external device during normal times, and reduce the risk that image data cannot be transmitted from the surveillance camera to the external device due to disconnection of the communication line or network communication failure in the event of a disaster. It is possible to check the situation in a monitor display device or the like.

  The image management system of the present invention is an image management system including a monitoring camera that is provided on a moving body and captures image data, and a center device that stores image data received from the monitoring camera. A position acquisition unit for acquiring the current position of the moving body, a shooting unit for acquiring wide-angle image data obtained by shooting a predetermined range at a wide angle, and correcting distortion of the wide-angle image data caused by shooting at a wide angle. An image correction unit that generates corrected image data from the wide-angle image data, a communication unit that transmits the corrected image data to the center device, and a disaster detection unit that detects the occurrence of a disaster at the current position of the moving body, A control unit that performs transmission control to transmit the wide-angle image data to the center device instead of the corrected image data when the disaster detection unit detects the occurrence of a disaster; It is provided.

  With this configuration, the monitoring camera captures wide-angle image data by photographing the periphery of the moving body at a wide angle. Furthermore, the surveillance camera generates corrected image data in which distortion of the wide-angle image data is corrected. At normal times, the monitoring camera transmits the corrected image data to the center device. As a result, the processing load on the center device can be reduced as compared with the case where the distortion of the wide-angle image data is corrected by the center device. On the other hand, at the time of a disaster (when the occurrence of a disaster at the current position of the moving body is detected), the monitoring camera transmits the wide-angle image data to the external device without waiting for the generation of the corrected image data. Thereby, when a disaster occurs in the vicinity of the moving body, it is possible to cancel the distortion correction for the wide-angle captured image around the moving body and promptly notify the center apparatus of the occurrence of the disaster.

  According to the present invention, it is possible to avoid the concentration of processing loads on the center device during normal times, and to reduce the risk that image data cannot be transmitted from the monitoring camera to the center device during a disaster.

1 is an overall configuration diagram of an image management system in an embodiment of the present invention. It is a block diagram which shows the structure of the surveillance camera in embodiment of this invention. It is a block diagram which shows the structure of the security apparatus in embodiment of this invention. It is a block diagram which shows the structure of the center apparatus in embodiment of this invention. It is a flowchart which shows the flow of a process of the image transmission control in embodiment of this invention. It is a flowchart which shows the flow of the process of the monitor display control in embodiment of this invention. It is a flowchart which shows the flow of a process of the user display control in embodiment of this invention.

  Hereinafter, an image management system according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, an example of an image management system used for an image monitoring service or the like that combines abnormality monitoring of facilities and buildings and damage status confirmation at the time of a disaster will be exemplified.

<Overall configuration>
A configuration of an image management system according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an overall configuration of an image management system according to the present embodiment. As shown in FIG. 1, a plurality of surveillance cameras 1 and a security device 2 are installed in a property (monitoring area) such as a facility or a building. The plurality of monitoring cameras 1 are connected to a security device 2, and the security device 2 is connected to a remote center device 4 via a network 3. The monitoring camera 1 is also connected to the center device 4 via the network 3, and the image of the monitoring camera 1 is transmitted to the center device 4 via the network 3. The center device 4 includes a recording processing server 5 and a WEB server 6. A monitoring display device 7 is connected to the center device 4 so that an image of the monitoring camera 1 can be confirmed by the monitoring display device 7. The center device 4 is connected to an external network 8 so that the image of the monitoring camera 1 can be confirmed from the user terminal 9 possessed by the user.

  For example, the center device 4 (the recording processing server 5 and the WEB server 6) and the monitoring display device 7 are installed in the monitoring center. The monitoring center is a facility operated by a security company equipped with the center device 4, displays various information received from the monitoring camera 1 and the security device 2 on the display unit of the monitoring display device 7, and the monitoring staff selects the monitoring target. It is constantly monitored. The user terminal 9 is a smartphone or a mobile terminal. The user can access the WEB server 6 with the user terminal 9 at the time of a disaster, and can browse the image of the monitoring camera 1 on a portal site or the like on the Internet.

<Monitoring camera>
FIG. 2 is a block diagram illustrating the configuration of the monitoring camera 1. As shown in FIG. 2, the surveillance camera 1 includes an optical system 10, an image sensor 11, an image analog / digital converter 12, an image compression circuit 13, a communication unit 14, a control unit 15, a storage unit 16, an image recording unit 17, an input unit. An output unit 18 and an image correction unit 19 are provided.

  In the surveillance camera 1 of the present embodiment, the optical system 10 and the image sensor 11 constitute an imaging unit. The photographing unit (the optical system 10 and the image sensor 11) has a function of photographing a wide range image through a wide angle lens. The imaging unit may capture a wide range image using a mirror (for example, a curved mirror). Image data of a wide range image can also be called wide-angle image data. It should be noted that the image captured by the image capturing unit is distorted in the surrounding image (peripheral portion of the wide range image away from the center of the image capturing range) as the image capturing range of the image capturing unit becomes wider (closer to 180 °). This distortion correction will be described later.

  The monitoring camera 1 stores in the storage unit 16 identification information such as a camera ID, camera device type, and lens type used to identify each monitoring camera 1 in advance, and is installed in a monitoring area to be installed.

  Shooting information is set in advance in the monitoring camera 1 by the user, and the monitoring camera 1 acquires image data captured based on the shooting information. The shooting information is set in advance and stored in the storage unit 16. The shooting information includes shooting conditions such as shooting interval (frame rate) and image quality (image size and compression rate). The shooting information includes a recording mode. The recording mode includes a continuous recording mode in which image data to be captured is always recorded, a period recording mode in which image data is continuously recorded only within a specified period, and when a detection signal is received from the monitoring sensor of the security device 2 Only a sensor-linked recording mode for recording image data.

  The image analog / digital converter 12 of the monitoring camera 1 converts the image signal input from the image sensor 11 into a digital signal at a shooting interval stored as shooting information. Further, the image compression circuit 13 of the surveillance camera 1 uses H.264 as the image compression encoding method according to the parameter corresponding to the image quality stored as the shooting information. Compressed encoded data (image data) compliant with the H.264 / MPEG-4 AVC standard is generated. The image compression encoding method may be other standards such as the MPEG2 Video standard, and may be generated as a still image such as the JPEG standard. Also, cameras of different image compression encoding methods may be mixed on the network, or one camera may switch the image compression encoding method.

  The generated image data is transmitted from the communication unit 14 to the recording processing server 5. The image data transmitted at this time includes a camera number for identifying the camera. The generated image data is recorded in the image recording unit 17 of the monitoring camera 1 as a backup. The image recording unit 17 is configured by, for example, an HDD or a flash memory. The image data includes, as additional information, the camera ID, the device type of the surveillance camera 1, the device type of the lens used, the shooting conditions, the shooting date and time, and the like in the header area of the data.

  Here, an example of transmitting to the recording processing server 5 every time an image is acquired will be described, but the scope of the present invention is not limited to this. The timing for transmitting an image from the communication unit 14 to the recording processing server 5 is a continuous transmission mode in which the image is always transmitted every time an image is acquired, or when an abnormal signal is input from the security device 2 and transmitted from the recording processing server 5. It may be set as a transmission schedule combining a known transmission control mode such as a linked transmission mode for transmitting image data when requested.

  The communication unit 14 is a communication interface (for example, an LTE communication module and an LTE antenna) that is connected to a mobile communication network or the Internet network as the network 3 and communicates with the recording processing server 5. Note that the scope of the present invention is not limited to an example in which the monitoring camera 1 directly communicates with the recording processing server 5. The image data may be output to the security device 2, and the image data may be transmitted from the communication unit 14 of the security device 2 to the recording processing server 5.

  The control unit 15 includes a disaster detection unit 151. The disaster detection unit 151 detects the occurrence of a disaster by receiving a disaster signal from an external disaster information distribution apparatus (record processing server 5), and sets the operation mode of the monitoring camera 1 to “disaster mode”. In addition, when receiving the disaster recovery signal from the recording processing server 5, the disaster detection unit 151 sets the operation mode to “normal mode”.

  The disaster signal may be broadcast simultaneously in a wide communication area including information on the area and scale where the disaster occurred. It corresponds to itself using the position information of the installation target stored in advance on the monitoring camera 1 side or the position information (current position information) acquired by a current position acquisition unit (not shown) such as GPS. The presence or absence of disaster information to be performed may be determined. The disaster information may be set to be received not from the record processing server 5 but from a provider providing a disaster information distribution service such as a mobile phone carrier, or within the monitoring area. The connected security device 2 may determine the occurrence of a disaster by detection of a sensor and receive a disaster signal from the security device 2.

  In addition, the disaster detection unit 151 may autonomously detect the occurrence of a disaster based on a specific luminance pattern in image data that is captured and acquired instead of the process of receiving a disaster signal. As a specific luminance pattern, for example, it is determined that a disaster such as an earthquake is detected by detecting a variation over almost the entire image by comparing successively acquired image data, or the luminance of the R component (red component) Various known techniques such as determining a fire disaster based on the area of the image portion whose value exceeds the threshold can be adopted.

  Further, when the operation mode is set to the “normal mode”, the control unit 15 uses the image compression circuit 13 to apply the corrected image data obtained by correcting the distortion to the uncorrected image data by the image correction unit 19 as will be described later. After compression, transmission control is performed for transmission from the communication unit 14 to the center device 4 (recording processing server 5). On the other hand, when the operation mode is set to “disaster mode”, the control unit 15 compresses uncorrected image data that has not been subjected to distortion correction by the image correction unit 19 by the image compression circuit 13, and then communicates with the communication unit 14. Is transmitted to the center device 4 (recording processing server 5).

  When the image correction unit 19 is provided in the subsequent stage of the image compression circuit 13, the control unit 15 compresses the image with the image compression circuit 13 when the operation mode is set to “normal mode”. Transmission control is performed to transmit the corrected image data subjected to distortion correction from the communication unit 14 to the center device 4 (recording processing server 5). On the other hand, when the operation mode is set to “disaster mode”, the control unit 15 transmits uncorrected image data that has not been subjected to distortion correction after being compressed by the image compression circuit 13 from the communication unit 14 to the center device 4 ( Control transmission to the recording processing server 5).

  The input / output unit 18 is an interface (for example, a wired / wireless LAN module) to which peripheral devices such as the security device 2 are connected. The input / output unit 18 is connected to a user's personal computer or the like, and can reference an image acquired by the monitoring camera 1 or image data recorded in the image recording unit 17.

  The image correction unit 19 receives input of image data (uncorrected image data) acquired by the photographing unit (the optical system 10 and the image sensor 11) and digitally converted by the image analog / digital converter 12, and receives uncorrected image data. And the corrected image is output as corrected image data. The correction coefficient (parameter) used when correcting the distortion varies depending on the characteristics of the wide-angle lens. For example, the image correction unit 19 can store correction parameters for lens distortion aberration for each lens in advance, and can change the parameters to be used according to the attached lens. Further, as the distortion correction, a process of cutting out a central portion of an image with little distortion may be performed. In this case, the coordinates to be cut out as image data may be stored as a correction parameter.

  In the present embodiment, the corrected image data output from the image correction unit 19 is compressed by the image compression circuit 13 to obtain output image data to be transmitted to the center device 4. Note that the image correction unit 19 may be provided at a subsequent stage of the image compression circuit 13. That is, the compressed image data obtained by inputting the uncorrected image data to the image compression circuit 13 may be input to the image correction unit 19 to perform distortion correction processing on the compressed image data.

<Security device>
FIG. 3 is a block diagram illustrating the configuration of the security device 2. As shown in FIG. 3, the security device 2 includes an operation unit 20, a communication unit 21, a display unit 22, an input / output unit 23, a storage unit 24, and a control unit 25.

  The operation unit 20 includes a reading unit 201 for reading user authentication information, and a key input unit 202 operated to set a security set mode and a security release mode. The operation unit 20 is allowed to be operated after the reading unit 201 reads user authentication information (ID information) and collates the user. The operation unit 20 may be configured with a touch panel provided on the liquid crystal monitor of the display unit 22.

  As the reading unit 201 for reading user ID information, a tag reader for reading a radio signal from an RFID tag, a card reader for reading card information of an IC card or a magnetic card, and biometric information acquisition for reading biometric information such as a fingerprint or a face image Means and the like may be provided as appropriate.

  The communication unit 21 is a communication interface that connects the security device 2 and the monitoring display device 7. The security device 2 and the monitor display device 7 are connected via a public network or the Internet as a network. In the present embodiment, an example in which the monitoring display device 7 is connected via the recording processing server 5 will be described. However, the monitoring display device 7 is not limited to this and can be directly communicated externally or directly or via a different route. It may be connected to the monitoring display device 7.

  The display unit 22 includes a liquid crystal display, an indicator lamp, a speaker, and the like. The display unit 22 is installed near or integrally with the operation unit 20 and has a function of displaying an operation guide or menu. The display unit 22 may have a function for voice notification.

  The input / output unit 23 is an interface to which a peripheral device 26 such as the surveillance camera 1 or a security sensor is connected. The input / output unit 23 includes a security sensor such as a magnet sensor that detects opening and closing of a door disposed at an appropriate location inside / outside the monitoring area, an infrared sensor that detects a human body by infrared rays, a smoke detector, and a heat detector. It is a communication interface that is connected to disaster prevention sensors such as sensors and emergency buttons operated by users and receives detection signals from various sensors. Each sensor is assigned a unique identification number, and the detection signal includes this identification number. The input / output unit 23 may be connected to the monitoring camera 1 and outputs an abnormality signal when the security device 2 determines that an abnormality has occurred.

  The storage unit 24 is a program for operating the control unit 25 as the security device 2, sensor information in which the sensor type and the sensor installation position are associated with each sensor ID number, and a user who operates the security device 2. Registered authentication information for authentication, operation mode history, and abnormality history are stored. Further, each time the operation mode is set, the storage unit 24 stores the set time, the set user information, and the set operation mode information as an operation mode history.

  The control unit 25 has a function of performing various controls of the security device 2. In the present embodiment, the control unit 25 includes a verification unit 251, a mode setting unit 252, and an abnormality determination unit 253.

  The collation unit 251 determines whether or not the user who inputs the operation on the operation unit 20 is a registered user. Specifically, the collation unit 251 determines whether or not the user ID information acquired from the operation unit 20 matches that registered in the storage unit 24 in advance (is collation OK). If they match, the user is authenticated as having the proper operation authority, and the operation mode of the security device 2 can be shifted by the operation performed through the operation unit 20 (by the mode setting unit 252).

  The mode setting unit 252 sets the operation mode of the security device 2 by the user's operation determined by the collation unit 251 as collation OK by the collation unit 251. As an operation mode of the security device 2, at least two types of a security set mode and a security release mode are set.

  Here, the security set mode is a mode in which when the detection signal is input from the security sensor, it is determined that the monitoring area is abnormally detected and the center device 4 is notified of the abnormality. The security release mode refers to a mode in which no abnormality is detected in the monitored area and no abnormality is reported even if a detection signal is input from the security sensor. In addition, the detection signal by a fire sensor and an emergency button is constantly monitored, and an abnormality is reported in any of the security set mode and the security release mode. For example, the user operates the operation unit 20 to set the security set mode when the security target is unmanned, and operates the operation unit 20 to set the security release mode when entering the security target.

  When the operation mode of the security device 2 is set, the mode setting unit 252 transmits a mode setting signal indicating the set operation mode from the communication unit 21 to the recording processing server 5.

  When the abnormality determination unit 253 receives the detection signal from the sensor, the abnormality determination unit 253 determines whether or not there is an abnormality in comparison with the current mode and the sensor information in the storage unit 24. In addition, the abnormality determination unit 253 determines that it is abnormal when a detection signal is received from any of the various sensors when the security set mode is set, and when the security release mode is set, When a detection signal is received from any of the buttons, it is determined that there is an abnormality. If the abnormality determination unit 253 determines that there is an abnormality, the abnormality determination unit 253 transmits an abnormality signal indicating the abnormality to the recording processing server 5 from the communication unit 21. The abnormality signal includes the identification number of the security device 2, the ID number of the sensor that detected the abnormality, the type of the sensor, and the information on the installation position thereof. If the abnormality determination unit 253 determines that the event has been recovered at the transmission source of the detection signal determined to be abnormal, the abnormality determination unit 253 transmits a recovery signal to the recording processing server 5.

<Center device>
FIG. 4 is a block diagram showing the configuration of the center device 4. As shown in FIG. 4, the center device 4 includes a recording processing server 5 and a WEB server 6. The recording processing server 5 includes an information storage unit 50, a disaster determination unit 51, an abnormality detection unit 52, an image storage unit 53, an image data conversion unit 54, a monitor display control unit 55, and a user display control unit 56.

  The information storage unit 50 manages, as the installation area information where the monitoring camera 1 is installed, the information of the monitoring area such as the address, the area, and a major nearby facility (landmark), the camera number, and the identification number of the security device 2 Information is stored in advance. The management information stores outdoor flag information for identifying whether the installation location is indoor or outdoor as information registered at the time of installation for each surveillance camera 1. If the outdoor flag is ON, it indicates that it is installed outdoors. The management information is managed as table information having various flags, and is updated as needed depending on the operation mode setting of the security device 2, the presence / absence of an abnormality, the presence / absence of a disaster, and the like.

  Moreover, the information storage part 50 has memorize | stored the operation mode currently set for every security apparatus 2 in management information. When the recording processing server 5 receives the mode setting signal from the security device 2, the operation mode is recorded as current mode information in association with the corresponding security device 2 in the management information. Further, the information storage unit 50 stores an ID and a password as user verification information corresponding to each monitoring area.

  The disaster determination unit 51 receives disaster information including information on a disaster occurrence area from the information providing source device (external device). For example, when the disaster determination unit 51 receives disaster information from an information distribution device of a disaster information distribution provider such as a public institution that is an information providing source device, the disaster determination unit 51 stores this along with the reception time. The disaster information is, for example, an earthquake early warning, but other information related to various disasters such as information on tsunami prediction, typhoon warning, and information on fire may be distributed as disaster information.

  The disaster determination unit 51 stores in advance parameters (disaster intensity) indicating the intensity of the disaster such as seismic intensity, precipitation, and wind speed as a disaster intensity threshold value. Determine occurrence. When it is determined that a disaster has occurred, the disaster determination unit 51 determines whether any of the monitoring areas are included in the disaster occurrence area. If included, the monitoring camera 1 and the security device corresponding to the monitoring area are included. The disaster flag is turned on for 2 (the disaster flag is enabled on the management information table). The disaster determination unit 51 turns off the disaster flag when a predetermined period has elapsed since the disaster flag was turned on. The predetermined period is a period set in advance according to the disaster intensity of the disaster information. For example, when the disaster information is an earthquake early warning, when the seismic intensity is 3, the predetermined period is set to 1 day, and when the seismic intensity is 6, the predetermined period is set to 1 week.

  In the present embodiment, the disaster determination unit 51 transmits a disaster signal to the monitoring camera 1 corresponding to the monitoring area where the disaster flag is turned on. In addition, the disaster determination unit 51 transmits a disaster recovery signal to the monitoring camera 1 corresponding to the monitoring area in which the disaster flag is turned off.

  The abnormality detection unit 52 detects an abnormality in the monitoring area based on information (abnormal signal) input from the monitoring camera 1 or the security device 2. When an abnormal signal is input from the security device 2, the abnormal flag of the corresponding monitoring area is turned ON in the management information (the abnormal flag is enabled on the management information table). Further, when the amount of change is greater than or equal to a predetermined amount based on the image data input from the monitoring camera 1, it may be determined as abnormal. Moreover, the abnormality detection part 52 determines abnormality recovery of a monitoring area based on the information (restoration signal) input from the monitoring camera 1 or the security device 2, and turns OFF the abnormality flag of the corresponding monitoring area.

  The image storage unit 53 stores image data (corrected image data and uncorrected image data) acquired from the monitoring camera 1 and a data table for managing the image data. The image data recording area is divided in advance for each camera or each monitoring area, and the image data of the corresponding monitoring camera 1 is recorded by receiving the image data.

  The data table is information for identifying the recorded image data, and includes the recording ID of the image data and additional information of the image data (camera ID, device type of the monitoring camera 1, device type of the lens used, shooting conditions) , The shooting date and time) is recorded in association with the address information in which the image data is recorded. Thereby, the received corrected image data and the uncorrected image data are stored in association with each other for each monitoring camera 1.

  The image data conversion unit 54 down-converts the image data acquired from the surveillance camera 1 to a preset definition and converts it to low-definition image data. Specifically, the image data conversion unit 54 performs down-conversion if the image data received from the monitoring camera 1 has a higher image quality than a preset resolution (for example, VGA resolution), and low-definition image data with VGA resolution. Convert to The converted low-definition image data is recorded in the image storage unit 53 in association with the basic image data before conversion (image data received from the monitoring camera 1).

  Here, an example of reducing the resolution as the content of down-conversion has been described, but the scope of the present invention is not limited to this. The image data converter 54 may reduce the definition by decreasing the frame rate, increasing the compression rate, or a combination thereof.

  Here, an example has been described in which the image data conversion unit 54 performs down-conversion when acquiring image data and stores low-definition image data in advance, but the scope of the present invention is not limited to this. When the image data is output from the user display control unit 56, the image data conversion unit 54 may perform down-conversion and conversion to low-definition image data.

  Furthermore, when the disaster flag is already ON for the monitoring camera 1 that has acquired the image data, the number of disaster occurrence areas determined by the disaster determination unit 51 (the width or the number of included areas) The degree (definition) of down-conversion may be varied. For example, the definition decreases as the number of disaster occurrence areas included in the disaster information of the disaster increases. For example, when the disaster occurrence area is “all areas of Tokyo”, downsizing is performed as compared with the case of “only Chiyoda-ku, Tokyo”. As a result, the data size of the image data can be reduced as the number of potential browsing consumers increases.

  In the present embodiment, when the image data acquired from the surveillance camera 1 is uncorrected image data, the image data conversion unit 54 corrects the distortion of the uncorrected image data, and converts the corrected image into corrected image data ( Disaster image data). This corrected image data (disaster image data) is recorded in the image storage unit 53 in association with the basic image data (uncorrected image data) before conversion. Further, the image data conversion unit 54 converts the corrected image data into low-definition image data and records it in the image storage unit 53. Therefore, the recording processing server 5 stores correction parameters for lens distortion aberration in the information storage unit 50 for each lens used by the monitoring camera 1.

  The monitoring display control unit 55 outputs the image data received from the monitoring camera 1 to the monitoring display device 7 together with the monitoring target information and abnormality information. When the monitor display control unit 55 receives the image data, if the abnormality flag of the corresponding monitoring area is ON in the management information, the monitoring display control unit 55 outputs this to the monitoring display device 7. Further, when a request for image data is received from the monitoring display device 7, if the abnormality flag of the monitoring area corresponding to the requested image data is ON, this image data is read from the image storage unit 53 and monitored and displayed. Output to the device 7.

  In this way, the image data provided to the monitor is image data that maintains the original definition, so that the cause can be grasped from the image at the time of abnormality, and the evidence of the image is enhanced. Yes.

  In the present embodiment, when the monitor display control unit 55 outputs the image data received from the monitoring camera 1 to the monitor display device 7, the corrected image data for the target image data is stored in the image storage unit 53. If this is the case, priority is given to output. If the corrected image data is not stored in the image storage unit 53, uncorrected image data is output.

  If the WEB server 6 receives a browsing request from the user and a disaster has occurred in the requested area, the user display control unit 56 can perform low-definition image data on the image data corresponding to the area. Is output to the WEB server 6 together with the area information, and transmitted to the user terminal 9. That is, the image transmitted to the user terminal 9 at this time is transmitted to the center device 4 without correction at the time of a disaster when the corresponding monitoring camera 1 is photographed at a wide angle, and the image data conversion unit 54 The corrected image data (disaster image data) obtained by distortion correction is processed with low definition. In addition, the regional information output at this time is information indicating a certain regional area, such as a classification of municipalities.

  When receiving the input of area information from the user terminal 9 as the browsing request signal, the user display control unit 56 extracts a monitoring area corresponding to the area information from the management information. The user display control unit 56 performs control so that the user can view the image only for the monitoring camera 1 in which the disaster flag of the corresponding monitoring area in the management information is ON and the outdoor flag is ON. Therefore, when the user display control unit 56 receives a browsing request from the user, if the disaster flag of the corresponding monitoring area in the management information is ON, the monitoring camera 1 whose corresponding outdoor flag is ON. The low-definition image data that is the most recent recording unit is read and output to the WEB server 6. If the disaster flag is OFF, or if all the corresponding surveillance cameras 1 are the outdoor flag OFF, the image data is not read and an error message is returned.

  As described above, the image data provided to the user can use data having a smaller data size than the original image data. As a result, it is possible to provide images continuously to users by reducing the possibility of processing delays and system outages even when access is concentrated during a disaster in a highly peaked disaster image providing service. It becomes.

  As an exception to this processing, the user display control unit 56 stores the information specifying the monitoring area and the ID / password as an authentication signal from the user via the WEB server 6 and stores them in the information storage unit 50. If the collation information is collated and it is determined that the collation for the designated monitoring area or the surveillance camera 1 is OK, image browsing is permitted regardless of the disaster flag and the outdoor flag. Particularly in this case, basic image data that has not been down-converted (image data received from the monitoring camera 1) may be output to the user terminal 9 instead of low-definition image data. Thereby, the legitimate user who is the installation target of the monitoring camera 1 and becomes a specific user can check the image of his / her management range via the WEB server 6.

  The WEB server 6 includes an access receiving unit 60. The access receiving unit 60 has a function of receiving access from the user terminal 9.

  The user accesses the URL of the portal site set in the access reception unit 60 of the WEB server 6 from the user terminal 9 as a client device such as a personal computer or a smartphone by using a dedicated application or a WEB browser. It is possible to designate and refer to the image data of the surveillance camera 1 that is disclosed so as to be viewable.

  In addition, the user can refer to the image data of the monitoring camera 1 in the monitoring area corresponding to the user by inputting collation information such as a preset ID and password.

  The WEB server 6 accepts access from the user terminal 9 and outputs image data. When the user accesses the WEB server 6, the WEB page of the portal site on which the input unit for specifying the area information that the user desires to view the image data and the input unit for inputting the user verification information is installed. It transmits to the user terminal 9. The user designates regional information desired to be browsed on the WEB page, and transmits a browse request signal for requesting image data to the WEB server 6. For example, it is possible to designate the area information up to the division of the city / town / village name or the division of the town area. In addition, it may be possible to designate neighboring main facilities (landmarks) as the regional information. Alternatively, a user who has previously obtained collation information from the monitoring center inputs his / her collation information and transmits an authentication signal requesting authentication to the WEB server 6.

  The WEB server 6 outputs information input from the user terminal 9 to the user display control unit 56. When the user display control unit 56 determines that the corresponding image data can be referred to, when providing the image data to the user terminal 9, a known method such as file transfer or streaming may be employed. The corresponding image data includes the image data of the outdoor monitoring camera 1 whose disaster flag is temporarily turned ON due to the occurrence of a disaster, and the monitoring camera 1 (browsing is permitted in advance corresponding to the collation information) For example, a user to be installed).

<Monitoring display device>
The monitoring display device 7 is composed of one or a plurality of computers and its operation unit and display unit, and displays various information such as image data received from the recording processing server 5 and the name and address of the monitoring area on the display unit, The monitoring staff constantly monitors the monitoring target. The monitoring display device 7 can access the management information of the recording processing server 5 as a database storing information of the monitoring target and the security device 2 installed there.

  On the display unit of the monitoring display device 7, information on the monitoring target to be dealt with based on the abnormality from the security device 2, information on the abnormality, and image data of the monitoring camera 1 installed on the monitoring target are displayed. For example, information specifying the property to be installed such as the name and address of the monitoring area is displayed. If the monitor sees such a display and determines that an abnormality has occurred in the monitoring area, the monitor takes necessary measures such as a coping instruction of the coping person to the monitoring target. For example, the monitor checks the received image data on the display unit, and if the occurrence of a fire such as flame or smoke is recognized, the monitor gives instructions to handle the monitoring target and makes a 119 report.

  The operation of the image management system configured as described above will be described with reference to the drawings.

  In the image management system according to the embodiment of the present invention, when an image is transmitted from the monitoring camera 1 to the center device 4, image transmission control as shown in FIG. 5 is executed. The image transmission control is executed by the monitoring camera 1.

  As shown in FIG. 5, when wide-angle image data (uncorrected image data) is first acquired by the imaging unit (the optical system 10 and the image sensor 11) in the monitoring camera 1 (S <b> 100), a disaster occurs from the recording processing server 5. It is determined whether information is received (S101). When disaster information is not received from the recording processing server 5, that is, when the operation mode is set to “normal mode”, image processing (distortion correction processing) is performed by the image correction unit 19, and a corrected image is displayed. Data is generated (S102). Then, the surveillance camera 1 transmits the corrected image data to the center device 4 (S103). When the disaster information is received from the recording processing server 5, that is, when the operation mode is set to “disaster mode”, the monitoring camera 1 omits the generation of the corrected image data, and the wide-angle image data (Uncorrected image data) is transmitted to the center device 4 (S104). When the center device 4 receives this wide-angle image data, the center device 4 performs distortion correction, acquires corrected image data (disaster image data), and converts it into a low-definition image.

  In the image management system according to the embodiment of the present invention, when an image of the monitoring camera 1 is confirmed by the monitoring display device 7 at the time of abnormality, monitoring display control as shown in FIG. 6 is executed. The monitoring display control is executed by the recording processing server 5 (mainly the monitoring display control unit 55) of the center device 4.

  The monitoring display control is executed when an abnormality is detected in the monitoring area. Therefore, first, the recording processing server 5 determines whether or not an abnormality is detected in the monitoring area (S1). When an abnormality is detected, image data of the monitoring area (monitoring area where the abnormality is detected) is provided to the monitor display device 7 so that the monitor can select it (S2). At this time, if corrected image data is stored in the image storage unit 53 for the target image data, this is preferentially provided to the monitoring display device 7. When the corrected image data is not stored in the image storage unit 53, the uncorrected image data is provided to the monitor display device 7.

  When the monitor selects the image data on the monitor display device 7 (for example, by clicking the image), the recording processing server 5 reads the selected image data (S3), and the image data and the installation target ( Information specifying the monitoring area is output to the monitoring display device 7 (S4). Until the abnormality is recovered, the output of the image data selected in this way is repeated. Thereafter, when the abnormality in the monitoring area is recovered (S5), the output of the image data is prohibited (S6), and the process is terminated.

  In the image management system according to the embodiment of the present invention, when the image of the monitoring camera 1 is confirmed on the user terminal 9 at the time of a disaster or the like, the user display control as shown in FIG. Is done. The user display control is executed by the recording processing server 5 (mainly the user display control unit 56) of the center device 4.

  The user display control is executed when there is a browsing request from the user terminal 9 via the WEB server 6. When there is a browsing request from the user terminal 9 (S10), it is first determined whether or not the user is a specific user (S11). If the user is not a specific user (that is, if the user is a general user who does not input unique verification information), it is determined whether or not the disaster flag of the monitoring area requested to be viewed is ON (S12). When the disaster flag is ON, it is determined whether there is an image of the monitoring camera 1 that can be browsed (S13). The browsing monitoring camera 1 is a monitoring camera 1 with a disaster flag ON and an outdoor flag ON.

  When there is an image of the monitoring camera 1 that can be browsed, the low-definition image of the monitoring camera 1 is read (S14), and the low-definition image and the area information of the monitoring camera 1 are output to the user terminal 9 ( S15). In particular, at this time, the classification of the municipality or the classification of the town is output as the regional information. Thereafter, it is determined whether or not the disaster flag is turned off (S16). When the disaster flag is turned off, the output of the low-definition image is prohibited (S17), and the process is terminated. Even if the disaster flag remains ON, if an input to end browsing is received from the user terminal 9 (S18), the process ends.

  When the user is a specific user, the authentication signal input from the WEB server 6 is compared with the verification information to identify the monitoring area corresponding to the specific user (S19), and the image data of the monitoring area Is provided to the user terminal 9 so that the user can select it (S20). When the user selects image data at the user terminal 9 (for example, by clicking on the image), the recording processing server 5 reads out the selected image (S21), and the image data and the installation target (monitoring). Information (area name and address, etc.) specifying the area is output to the user terminal 9 (S22). Thereafter, when an input for browsing termination is received from the user terminal 9 (S23), the process is terminated.

  According to such an image management system of the present embodiment, the monitoring camera 1 captures a predetermined range (monitoring area) at a wide angle and acquires wide-angle image data (uncorrected image data). Furthermore, the surveillance camera 1 generates corrected image data in which distortion of the wide-angle image data is corrected. At normal time, the monitoring camera 1 transmits the corrected image data to the center device 4. As a result, the processing load on the center device 4 can be reduced as compared with the case where the center device 4 corrects the distortion of the wide-angle image data. On the other hand, at the time of a disaster (when disaster information is received), the monitoring camera 1 cancels the generation of the corrected image data and transmits the wide-angle image data to the center device 4 immediately. Thereby, at the time of a disaster, image data can be sent from the monitoring camera 1 to the center apparatus 4 in a short time. Therefore, it is possible to avoid the concentration of processing load on the center apparatus 4 during normal times, and in the event of a disaster there is a risk that image data cannot be transmitted from the monitoring camera 1 to the center apparatus 4 due to disconnection of communication lines or network communication failures. Can be reduced.

  In this embodiment, when wide-angle image data (uncorrected image data) is transmitted from the monitoring camera 1 to the center device 4 at the time of a disaster, the center device 4 corrects the distortion of the wide-angle image data. Image data (corrected image data) is generated. The disaster image data (corrected image data) is stored in the image storage unit 53 in association with the wide-angle image data (uncorrected image data). As a result, even if the corrected image data is not transmitted from the monitoring camera 1 to the center device 4 at the time of a disaster, the center device 4 generates disaster image data (corrected image data), and the monitoring display device 7 or It can be provided to the user terminal 9 or the like.

  In the present embodiment, disaster image data is transmitted from the center device 4 to the user terminal 9 in response to a request from the user terminal 9. As a result, even if the user (user) of the user terminal 9 does not transmit the corrected image data from the monitoring camera 1 to the center device 4 at the time of a disaster, Image data corrected for data distortion).

  The embodiments of the present invention have been described above by way of example, but the scope of the present invention is not limited to these embodiments, and can be changed or modified according to the purpose within the scope of the claims. is there.

  In the present embodiment, an example of a property such as a facility or a building has been described as an installation target of the monitoring camera 1. However, the installation target is not limited to this, and monitoring is performed on a moving object such as a person, a vehicle, or a flying object. The camera 1 may be held and the periphery of the moving body may be photographed at a wide angle. In this case, the disaster detection unit 19 of the monitoring camera 1 may detect the occurrence of a disaster in the moving body by operating a disaster notification button or the like by the user of the moving body. Thereby, when a disaster occurs in the vicinity of the moving body, it is possible to cancel the distortion correction for the wide-angle captured image around the moving body and promptly notify the center apparatus 4 of the occurrence of the disaster.

  The surveillance camera 1 held by the moving body may include a position acquisition unit that acquires the current position of the moving body, and the disaster detection unit 19 detects the occurrence of the disaster according to the current position. Also good. For example, when the monitoring camera 1 periodically transmits its current position to the center device 4 and transmits a disaster signal in the center device 4, the position information mobile unit (monitoring camera 1) corresponding to the disaster area is transmitted. The disaster detection unit 19 of the monitoring camera 1 that has transmitted and received this may detect the occurrence of a disaster. Alternatively, the center device 4 transmits a disaster signal in a broadcast including information on the disaster area and the disaster scale, and the disaster detection section 19 of the surveillance camera 1 matches the current location information with the disaster area and the disaster scale. If information is included, it may be determined that a disaster has occurred. Also by this, when a disaster occurs in the vicinity of the moving body, it is possible to cancel the distortion correction for the wide-angle captured image around the moving body and promptly notify the center apparatus 4 of the occurrence of the disaster.

  As described above, the image management system according to the present invention can avoid the concentration of processing load on the center apparatus, and can reduce the risk that image data cannot be transmitted from the monitoring camera to the center apparatus in the event of a disaster. It is useful for image monitoring services that combine abnormal monitoring of facilities and buildings and confirmation of damage status during disasters.

DESCRIPTION OF SYMBOLS 1 Surveillance camera 2 Security apparatus 3 Network 4 Center apparatus 5 Recording processing server 6 WEB server 7 Monitoring display apparatus 8 External network 9 User terminal 10 Optical system 11 Image pick-up element 12 Image analog / digital converter 13 Image compression circuit 14 Communication part 15 Control Unit 151 image correction unit 16 storage unit 17 image recording unit 18 input / output unit 19 disaster detection unit 20 operation unit 201 reading unit 202 key input unit 21 communication unit 22 display unit 23 input / output unit 24 storage unit 25 control unit 251 verification unit 252 Mode setting unit 253 Abnormality determination unit 26 Peripheral device 50 Information storage unit 51 Disaster determination unit 52 Abnormality detection unit 53 Image storage unit 54 Image data conversion unit (image processing unit)
55 Monitoring display control unit 56 User display control unit 60 Access reception unit

Claims (5)

An image management system comprising a monitoring camera that is installed on an installation target and captures image data, and a center device that stores image data received from the monitoring camera,
The surveillance camera is
An imaging unit that acquires wide-angle image data obtained by imaging a predetermined range at a wide angle;
An image correction unit that corrects distortion of the wide-angle image data caused by photographing at a wide angle and generates corrected image data from the wide-angle image data;
A communication unit that transmits the corrected image data to the center device;
A disaster detection unit for detecting the occurrence of a disaster in the installation target;
When the disaster detection unit detects the occurrence of a disaster, a control unit that performs transmission control to transmit the wide-angle image data to the center device instead of the corrected image data;
An image management system comprising: The center device is
An image processing unit that, when receiving wide-angle image data from the surveillance camera, corrects distortion of the wide-angle image data and generates disaster image data from the wide-angle image data;
A storage unit for storing the corrected image data received from the monitoring camera and the disaster image data generated by the image processing unit;
The image management system according to claim 1, comprising: The center device is
Furthermore, the image confirmation system of Claim 2 provided with the user display control part which receives the request signal from a user terminal and transmits the said disaster image data to this user terminal. A surveillance camera that is installed on an installation target and captures image data,
The surveillance camera is
An imaging unit that acquires wide-angle image data obtained by imaging a predetermined range at a wide angle;
An image correction unit that corrects distortion of the wide-angle image data caused by photographing at a wide angle and generates corrected image data from the wide-angle image data;
An output unit for outputting the corrected image data to an external device;
A disaster detection unit for detecting the occurrence of a disaster in the installation target;
When the disaster detection unit detects the occurrence of a disaster, a control unit that performs transmission control to transmit the wide-angle image data to the external device instead of the corrected image data;
A surveillance camera comprising: An image management system comprising a monitoring camera that is provided in a moving body and captures image data, and a center device that stores image data received from the monitoring camera,
The surveillance camera is
A position acquisition unit for acquiring a current position of the moving body;
An imaging unit that acquires wide-angle image data obtained by imaging a predetermined range at a wide angle;
An image correction unit that corrects distortion of the wide-angle image data caused by photographing at a wide angle and generates corrected image data from the wide-angle image data;
A communication unit that transmits the corrected image data to the center device;
A disaster detection unit for detecting occurrence of a disaster at the current position of the mobile body;
When the disaster detection unit detects the occurrence of a disaster, a control unit that performs transmission control to transmit the wide-angle image data to the center device instead of the corrected image data;
An image management system comprising: