JP4301978B2 - Remote monitoring system and relay device - Google Patents

Description

  The present invention relates to a remote monitoring system for monitoring a change in state at each point to be monitored and a relay device used in such a remote monitoring system.

  As is well known, remote monitoring systems are used to monitor changes in conditions at monitored points such as roads, railways, coasts, harbors, rivers, dams, and mountains. The remote monitoring system includes a photographing unit including a monitoring camera and a relay device for transmitting image data generated by the monitoring camera, and a central control device. Based on the image data sent through the communication line from each photographing unit installed at the point, the video at each point is displayed on the display device.

Conventionally, since the image data output from the photographing unit has been sent to the central control device via a dedicated communication line, the remote monitoring system has been closed. In recent years, an existing network such as an IP [Internet Protocol] network has been adopted as a communication means for transmitting image data to a central control device in order to increase versatility and reduce costs. Recently, services that provide image data generated by a photographing unit to other vendors such as a television broadcasting station by taking advantage of the characteristics of such an existing network are spreading.
Japanese Patent Laid-Open No. 10-104738

  By the way, the monitoring camera of the imaging unit installed at each point is attached to various facilities so that the state of the subject can be appropriately captured. Some facilities, such as bridges with highways and railroads, buoys floating on the sea, or steel towers, constantly vibrate for some reason. If the facility is vibrated, the surveillance camera shakes when the facility vibrates, resulting in the visual field of the moving image generated by the surveillance camera being shaken, making it difficult to observe when the moving image is displayed on the display device. turn into. For this reason, the provider providing the above-mentioned service performs correction processing for suppressing the blurring of the visual field for such a trader that disturbs the work if the so-called blurring of the visual field is present in the moving image. Provided image data.

  On the other hand, any company that enjoys the services described above hopes to observe earthquakes, which are one of the main factors that change the status of each point in the monitoring target, using moving images from each point. It is out. Nevertheless, if the above-described correction processing is applied to the image data, even if the visual field blur occurs in the moving image due to the earthquake, the visual field blur is corrected. Whether or not it has occurred cannot be observed from the moving image.

  The present invention has been made in view of the conventional problems as described above, and the problem is that even when the image capturing unit provides image data that has been subjected to correction processing for suppressing visual field blur, It is an object of the present invention to provide a remote monitoring system that makes it possible to observe the occurrence of an earthquake at each installed point from a moving image based on the image data. Another object of the present invention is to provide a relay device for transmitting image data in such a remote monitoring system.

  A first aspect of a remote monitoring system invented to solve the above problems is a photographing unit that sequentially generates image data of a subject image, and field blur correction for the image data sequentially generated by the photographing unit. A visual field blur correction unit that outputs the vibration information, a vibration information acquisition unit that acquires vibration information indicating the magnitude of the vibration when the point where the photographing unit is installed vibrates, and the vibration information acquired by the vibration information acquisition unit Based on the above, an earthquake discriminating unit that discriminates whether or not an earthquake has occurred at the point where the photographing unit is installed, and the earthquake discriminating unit judges that an earthquake has occurred at the point where the photographing unit is installed During the period, the image blur output is output from the field blur correction unit, a switching unit that instructs the field blur correction unit to output the image blur correction process without performing image blur correction processing on each image data. A transmission unit that transmits data; a reception unit that receives each image data from the transmission unit via a network; and a display unit that displays a moving image based on each image data received by the reception unit. , With features.

  A second aspect of the remote monitoring system invented to solve the above-described problem is a photographing unit that sequentially generates image data of a subject image, and the image data that is sequentially generated by the photographing unit is transmitted. A transmission unit, a reception unit that receives the image data from the transmission unit via a network, a visual field blur correction unit that performs visual field blur correction on the image data received by the reception unit, and the imaging unit; A vibration information acquisition unit that acquires vibration information indicating the magnitude of vibration when the installed point vibrates, at a point where the photographing unit is installed based on vibration information acquired by the vibration information acquisition unit An earthquake discriminating unit that discriminates whether or not an earthquake has occurred, and is only viewed while the earthquake discriminating unit judges that an earthquake is occurring at the point where the imaging unit is installed. A switching unit that instructs the visual field blur correction unit to output the image without performing blur correction processing on each image data, and a moving image is displayed based on each image data output from the visual field blur correction unit. It is characterized by having a display unit.

  With such a configuration, even when the visual field blur correction unit performs the visual field blur correction process, the earthquake determination unit determines that an earthquake is occurring at the point where the photographing unit is installed. In this case, the field blur correction unit does not perform field blur correction on the image data. For this reason, in the moving image displayed on the display unit based on this image data, the visual field blur occurs only during the occurrence of the earthquake. As a result, it is possible to observe from the moving image that an earthquake has occurred at the point where the photographing unit is installed.

  In the remote monitoring system of the present invention, the vibration information acquisition unit acquires vibration information about the point where the imaging unit is installed by detecting the vibration with a vibration sensor installed in the vicinity of the imaging unit. Alternatively, seismic intensity information output from another earthquake detection system for vibration generated at a point where the photographing unit is installed may be acquired as vibration information about the point.

  The relay device invented to solve the above problems is connected to a photographing device that sequentially generates and transmits image data of a subject image and a monitor that displays a moving image based on each image data. A relay unit that receives each image data from the photographing device via a network, and performs a field blur correction on the image data received by the receiver and outputs the image blur to the monitor. Based on the vibration information acquired by the vibration information acquisition unit, the vibration information acquisition unit that acquires the vibration information indicating the magnitude of the vibration when the point where the imaging device unit is installed vibrates, An earthquake discriminating unit for discriminating whether or not an earthquake has occurred at a point where the imaging device is installed, and when an earthquake has occurred at the point where the imaging device is installed Only while the seismic determination unit is determined, further comprising a switching unit for instructing the viewing blur correction process on the field blur correcting unit to output without being subject to the image data, it is characterized.

  Therefore, this relay apparatus can function as a relay apparatus that transmits image data in the remote monitoring system according to the second aspect of the present invention described above.

  As described above, according to the present invention, it is possible to detect that an earthquake has occurred at a monitoring point where an imaging device is installed even when image data subjected to correction processing for suppressing visual field blur is provided. It becomes possible to observe from the video based on the image data.

  Next, five examples for carrying out the present invention will be described with reference to the accompanying drawings.

Embodiment 1

  FIG. 1 is a schematic configuration diagram of a remote monitoring system according to the first embodiment of the present invention. As shown in FIG. 1, the remote monitoring system according to the first embodiment includes one or more photographing units 10, one or more display units 20, and an administrator terminal device 30. 10, 20 and the administrator terminal device 30 are connected to each other via a network N.

  The photographing unit 10 is a unit for photographing each point within the monitoring target of the remote monitoring system, and is installed at each point to be monitored such as a road, a track, a coast, a harbor, a river, a dam, and a mountain. This photographing unit 10 includes a monitoring camera 11, a vibration sensor 12, and a relay device 13.

  The surveillance camera 11 converts an image of a predetermined field of view formed by the objective optical system into video data composed of a plurality of image data, converts sound into audio data, and outputs each data in the form of an analog signal. Equipment. The monitoring camera 11 is connected to the relay device 13 via a pin terminal cable or an S terminal cable. The surveillance camera 11 is attached to a sign post, an illumination light post, a bridge frame, a rooftop of a building, etc., when a highway is to be monitored, and a buoy when a harbor is to be monitored. , Crane equipment frames, market roofs, tower tips, lighthouses, building rooftops, etc. For example, when rivers are monitored, they are attached to dam railings, sluice gates, steel bridge frames, steel towers, etc. For example, when a mountain is to be monitored, it is attached to a balustrade of a sabo dam, a rockfall prevention fence, a tunnel ceiling, or the like. The surveillance camera 11 corresponds to the photographing unit described above.

  The vibration sensor 12 is a device for acquiring and outputting acceleration data by digitizing the acceleration when the place where it is installed vibrates, and is connected to the relay device 13 via a serial interface cable. . The vibration sensor 12 is desirably installed on the ground as much as possible. For example, when the surveillance camera 11 is installed on a steel tower or bridge, it is desirable to install it on the ground around the base of the steel tower or pier. Moreover, when the surveillance camera 11 is installed on a buoy, it is desirable to install it on the seabed below the buoy. The vibration sensor 12 corresponds to the vibration information acquisition unit described above. The acceleration data corresponds to the vibration information described above.

  The relay device 13 is a communication device to which a function for converting data output from the monitoring camera 11 and the vibration sensor 12 into a transmission form that can be transmitted through the network N is added. The relay device 13 corresponds to the transmission unit described above.

  On the other hand, the display unit 20 is a unit for receiving the image data acquired by the photographing unit 10 and displaying the state of each point in the monitoring target as a moving image on the monitor. The display unit 20 is used by a trader who installed the photographing unit 10 or a trader receiving a moving image from the trader. The display unit 20 includes a monitor 21 and a relay device 22.

  The monitor 21 is a display device that, when video data is input in the form of an NTSC signal, displays a moving image based on each image data constituting the video data. The monitor 21 corresponds to the display unit described above.

  The relay device 22 is a communication device to which a function for receiving image data from the relay device 13 of the photographing unit 10 and converting it into a form of an NTSC signal that can be input to the monitor 21 is added. The relay device 22 corresponds to the above-described receiving unit.

  By the way, in 1st Embodiment, both the relay apparatus 13 of the imaging | photography unit 10 and the relay apparatus 22 of the display unit 20 are comprised from the same hardware, and each differs according to the program installed in the inside. Demonstrate the function. Therefore, in the following, the relay device 13 of the photographing unit 10 will be described in detail first, and then the relay device 22 of the display unit 20 will be described in detail.

  FIG. 2 is an internal configuration diagram of the relay device 13 of the photographing unit 10 according to the first embodiment. The relay unit 13 of the photographing unit 10 includes a CPU [Central Processing Unit] 13a, a RAM [Random Access Memory] 13b, a serial interface unit 13c, an audio video interface unit 13d, a field blur correction unit 13e, a codec unit 13f, and a network interface unit 13g. , And EEPROM [Electrically Erasable and Programmable Read Only Memory] 13h.

  The CPU 13a is a central processing unit for controlling the entire relay device 13. The RAM 13b is a main storage device in which a work area is developed when the CPU 13a executes various programs. The serial interface unit 13c is a device that performs data communication by serial transfer with a device connected via a serial interface cable. In the first embodiment, the vibration sensor 12 is connected to the serial interface unit 13c by, for example, an RS-232C cable.

  The audio video interface unit 13d is a circuit that converts an analog signal into a digital signal or reversely converts it. The audio / video interface unit 13d has an input / output pin terminal or an input / output S terminal for inputting / outputting video data, and an input / output pin terminal for inputting / outputting audio data. In one embodiment, the monitoring camera 11 is connected to these input / output terminals by, for example, a pin terminal cable or an S terminal cable. The audio video interface unit 13d is a general circuit and will be described briefly. The audio video interface unit 13d includes therein an audio data processing core and a video data processing core. For each of the audio data and the video data, a conversion process between an analog signal and a digital signal or vice versa. Perform the conversion process. When an analog NTSC [National Television System Committee] signal such as an RGB signal, a component signal, or an S video signal is input, the video data processing core performs processing such as amplification, γ correction, and A / D conversion. Functions as a pre-processing unit that applies to an analog signal, and functions as a post-processing unit that performs processing such as D / A conversion, amplification, clamping, blanking, and impedance matching on the digital signal when a digital signal is input. .

  The visual field blur correction unit 13e is a circuit for performing a so-called visual field blur correction process that cuts out a part of each image data and suppresses the change in the visual field when the visual field changes in the moving image. The visual field blur correction unit 13e is a general circuit and will be described briefly. The field blur correction unit 13e includes a selector together with a ROM [Read Only Memory], a frame memory, an adder, and the like, and starts or stops the field blur correction process in response to an on / off instruction input to the selector. When the function of the field blur correction unit 13e is enabled, the field blur correction process is performed on each image data constituting the video data, but the function of the field blur correction unit 13e is invalid. In this case, each image data is output as it is without being subjected to any processing.

  The codec unit 13f compresses audio data and video data in accordance with MPEG-1 [Moving Picture Experts Group 1], MPEG-2 [Moving Picture Experts Group 2], and MPEG-4 [Moving Picture Experts Group 4] standards. Or a circuit that performs the inverse transformation thereof. Since this codec unit 13f is a general circuit, it will be briefly described. The codec unit 13f includes an audio encoder decoder core, a video encoder decoder core, a demultiplexing core, and a buffer core. When it is input, it functions as a multiplexing unit, and when stream data is input, it functions as a demultiplexing unit.

  When the codec unit 13f functions as a multiplexing unit, the audio encoder decoder core and the video encoder decoder core first generate audio and video elementary streams by encoding each data, and then multiplex The demultiplexing core generates a PES [Packetized Elementary Stream] from each generated elementary stream, and multiplexes each generated PES of audio and video to create a TS [Transport Stream] scheme or PS [Program Stream]. ] Stream data is generated, and finally, the buffer core once records the generated stream data and outputs it at a predetermined timing.

  Conversely, when the codec unit 13f functions as a demultiplexing unit, the buffer core first records the stream data and then delivers it to the demultiplexing core at a predetermined timing. The audio and video PES is separated from the stream data, and the audio and video elementary streams are reproduced from each PES. Finally, the audio encoder decoder core and the video encoder decoder core decode the elementary streams. Output.

  The network interface unit 13g is a communication adapter for transmitting / receiving data to / from a router on the network N. This network interface unit 13g uses the IP [Internet Protocol], IPX [Internet Packet eXxchange] (trademark of Novell, USA), or DDP [Datagram Delivery Protocol] (Apple, USA) to transfer the data passed from the CPU 13a and the codec part 13f. And a function of reproducing data from the received data capsule and passing it to the CPU 13a and the codec unit 13f.

  The EEPROM 13h is a storage device for recording data and programs. In the present embodiment, an OS [Operating System] program for managing hardware and software in an integrated manner is recorded in the EEPROM 13h, and a setting information table 131, an encoding control program 132, and A switching program 133 is recorded.

  The setting information table 131 is a table for setting a transmission destination when stream data is transmitted from the relay device 13. 3 and 4 are diagrams illustrating an example of the data structure of the setting information table 131. FIG. 3 shows an example of the setting information table 131 recorded in the relay device 13 of the upper photographing unit 10 in FIG. 1, and FIG. 4 shows a record in the relay device 13 of the lower photographing unit 10 in FIG. An example of the set information table 131 is shown. The setting information table 131 in FIGS. 3 and 4 has the same number of records as the transmission destination of the stream data. Each record has fields of “own IP address”, “destination IP address”, and “correction instruction flag”.

  In the “own IP address” field, an IP [Internet Protocol] address set in the relay apparatus 13 is recorded. In the “destination IP address” field, the IP address set in the relay device 22 of the display unit 20 that receives the stream data from the relay device 13 is recorded. The contents of the “own IP address” and “destination IP address” fields in FIG. 3 are such that the upper photographing unit 10 in FIG. 1 transmits image data to the upper display unit 20 in FIG. Is shown. Further, the contents of the “own IP address” and “destination IP address” fields in FIG. 4 are such that the imaging unit 10 on the lower side in FIG. 1 transmits image data to the display unit 20 on the lower side in FIG. It shows that there is.

  In the “correction instruction flag” field, a correction instruction flag that specifies whether or not the field blur correction process should be executed for the field blur correction unit 13e is recorded. When the correction instruction flag is “1”, it indicates that the visual field blur correction process should be executed. When the correction instruction flag is “0”, the visual field blur correction process should not be executed. Is shown. The correction instruction flag in the setting information table 131 is unified to “1” or “0” over all records.

  The encoding control program 132 is a program that causes the relay device 13 to function as an encoder. That is, the CPU 13a that has executed the encoding control program 132 causes the audio video interface unit 13d to function as a pre-processing unit and the codec unit 13f to function as a multiplexing unit. Thus, after the audio data and video data output from the surveillance camera 11 are digitized in the audio video interface unit, if the function of the visual field blur correction unit 13e is disabled, the codec unit 13f encodes the audio data and video data. It is converted into stream data by packetization and multiplexing, and is transmitted to the relay device 22 of the display unit 20 by the network interface unit 13g.

  The switching program 133 is a program for forcibly canceling the function of the visual field blur correction unit 13e when acceleration data received from the vibration sensor 12 exceeds a predetermined upper limit value. FIG. 5 is a flowchart showing the contents of the switching process executed by the CPU 13a that has read the switching program 133.

  In the first step S101 after the start of the switching process, the CPU 13a waits until acceleration data is received from the vibration sensor 12 (S101; NO). And if acceleration data are received from the vibration sensor 12 (S101; YES), CPU13a will advance a process to step S102.

  In step S102, the CPU 13a determines whether or not the received acceleration data exceeds a predetermined upper limit value. If the received acceleration data does not exceed the predetermined upper limit value (S102; NO), the CPU 13a advances the process to step S103.

  In step S103, the CPU 13a determines whether the correction instruction flag set in the setting information table (see FIG. 3 or FIG. 4) 131 is “0” or “1”. If the correction instruction flag set in the setting information table 131 is “0” (S103; 0), the CPU 13a advances the process to step S104.

  In step S104, the CPU 13a determines whether or not the function of the visual field blur correction unit 13e is valid. Then, when the function of the field blur correction unit 13e is disabled (S104; NO), the CPU 13a returns the process to step S101, and when the function of the field blur correction unit 13e is enabled (S104; YES). ), The process proceeds to step S105.

  In step S105, the CPU 13a instructs the visual field blur correction unit 13e to stop the visual field blur correction process. After the instruction, the CPU 13a returns the process to step S101.

  On the other hand, when the correction instruction flag set in the setting information table (see FIG. 3 or FIG. 4) 131 is “1” in step S103 (S103; 1), the CPU 13a advances the process to step S106.

  In step S106, the CPU 13a determines whether or not the function of the visual field blur correction unit 13e is enabled. When the function of the field blur correction unit 13e is enabled (S106; YES), the CPU 13a returns the process to step S101, and when the function of the field blur correction unit 13e is disabled (S106; NO). ), The process proceeds to step S107.

  In step S107, the CPU 13a instructs the visual field blur correction unit 13e to start the visual field blur correction process. After the instruction, the CPU 13a returns the process to step S101.

  In step S102, when the received acceleration data exceeds a predetermined upper limit value (S102; YES), the CPU 13a advances the process to step S108.

  In step S108, the CPU 13a determines whether or not the function of the visual field blur correction unit 13e is enabled. When the function of the field blur correction unit 13e is invalid (S108; NO), the CPU 13a returns the process to step S101, and when the function of the field blur correction unit 13e is valid (S108; YES). ), The process proceeds to step S109.

  In step S109, the CPU 13a instructs the visual field blur correction unit 13e to stop the visual field blur correction process. After the instruction, the CPU 13a returns the process to step S101.

  The CPU 13a that executes steps S101 and S102 corresponds to the above-described earthquake determination unit, and the CPU 13a that executes steps S108 and S109 corresponds to the above-described switching unit.

  FIG. 6 is an internal configuration diagram of the relay device 22 of the display unit 20 according to the first embodiment. Similar to the relay device 13 of the photographing unit 10, the relay device 22 of the display unit 20 includes a CPU 22a, a RAM 22b, a serial interface unit 22c, an audio video interface unit 22d, a field blur correction unit 22e, a codec unit 22f, a network interface unit 22g, And an EEPROM 22h.

  In addition, an OS program is recorded in the EEPROM 22f, and a setting information table 221 and a decode control program 222 are recorded.

  The setting information table 221 is a table for setting a transmission source when the relay device 22 receives stream data. 7 and 8 are diagrams illustrating an example of the data structure of the setting information table 221. FIG. 7 shows an example of the setting information table 221 recorded in the relay device 22 of the upper display unit 20 in FIG. 1, and FIG. 8 shows a record in the relay device 22 of the lower display unit 20 in FIG. An example of the set information table 221 is shown. The setting information table 221 shown in FIGS. 7 and 8 has one record including fields of “own IP address” and “source IP address”.

  In the “own IP address” field, the IP address set in the relay device 22 is recorded. In the “source IP address” field, the IP address set in the relay device 13 of the photographing unit 10 that transmits stream data to the relay device 22 is recorded. The contents of the “own IP address” and “source IP address” fields in FIG. 7 are such that the upper display unit 20 in FIG. 1 receives image data from the upper photographing unit 10 in FIG. Is shown. Further, the contents of the “own IP address” and “source IP address” fields in FIG. 8 are such that the lower display unit 20 in FIG. 1 receives image data from the lower photographing unit 10 in FIG. It shows that there is.

  The decode control program 222 is a program that causes the relay device 22 to function as a decoder. That is, the CPU 22a that has executed the decode control program 222 causes the codec unit 22f to function as a demultiplexing unit, and causes the audio video interface unit 22d to function as a subsequent processing unit. As a result, the stream data received by the network interface unit 22g from the relay device 22 of the photographing unit 10 is converted into an elementary stream by being separated, assembled, and decoded by the codec unit 22f, and then the audio video. It is converted into an analog signal in the interface unit. Note that the decode control program 222 of the first embodiment instructs the visual field blur correction unit 22e not to always perform the visual field blur correction process. Therefore, the relay device 22 of the display unit 20 of the first embodiment functions in the same manner as a conventional decoder.

  Since it is configured as described above, the remote monitoring system according to the first embodiment operates as described below.

  The fact that the visual field blur correction processing is not performed is set in the relay device 13 as in the upper photographing unit 10 in FIG. 1 (correction instruction flag = 0; see FIG. 3), and the vibration sensor 12 has a predetermined value. When the acceleration exceeding the upper limit value is not detected, the relay device 13 invalidates the function of the visual field blur correction unit 13e (S101, S102; NO, S103; 0, S104, S105). For this reason, when the relay device 22 of the upper display unit 20 in FIG. 1 as the transmission destination receives the stream data from the relay device 13 of the photographing unit 10, the monitor 21 is not subjected to the field blur correction. Display moving images.

  Further, as in the lower display unit 20 in FIG. 1, the relay device 13 is set to perform the field blur correction process (correction instruction flag = 1; see FIG. 4), and the vibration sensor 12 is When the acceleration exceeding the predetermined upper limit value is not detected, the relay device 13 enables the function of the visual field blur correction unit 13e (S101, S102; NO, S103; 0, S106, S107). For this reason, when the relay device 22 of the upper display unit 20 in FIG. 1 as the transmission destination receives the stream data from the relay device 13 of the photographing unit 10, the monitor 21 is subjected to the field blur correction. Display moving images.

  Furthermore, even if either the fact that the visual field blur correction process is performed or the visual field blur correction process is not performed is set in the relay device 13 of the photographing unit 10, the acceleration that the vibration sensor 12 exceeds the predetermined upper limit value. Is detected, the relay device 13 invalidates the function of the visual field blur correction unit 13e (S101, S102; YES, S108, S109). Therefore, when the relay device 22 of the display unit 20 that is the transmission destination receives the stream data from the relay device 13 of the photographing unit 10, the monitor 21 displays a moving image that has not been subjected to visual field blur correction.

  In order to operate as described above, according to the remote monitoring system of the first embodiment, when an earthquake occurs, the state of the point where the earthquake occurred is displayed on any display unit 20 with a blurred image. It becomes possible to observe through the image.

  By the way, the administrator terminal device 30 is a personal computer used when a contractor who has installed the photographing unit 10 at each point manages the relay device 13, and includes a main body, a display, a keyboard, a mouse, and the like. Further, a communication adapter is attached to the main body, and this communication adapter is connected to a router on the network N. Furthermore, a program for changing the contents recorded in the setting information table 131 of the relay device 13 is installed in the hard disk in the main body of the administrator terminal device 30.

  The person in charge of managing each relay device 13 executes this program in the hard disk of the administrator terminal device 30 and inputs a predetermined command to record it in the setting information table 131 of each relay device 13. The contents to be changed can be changed. That is, the manager in charge can change the contents of the “correction instruction flag” field of the setting information table 131 of each relay device 13 so that the visual field blur correction is performed in a normal state where no earthquake occurs. A display unit 20 for displaying an image can be designated.

  Further, in the first embodiment, the display unit 20 is described as including the monitor 21 and the relay device 22, but the present invention is not limited to this. For example, as shown in FIG. 9, the display unit may be a personal computer 20 ′ including a main body equipped with a communication adapter, a display, a speaker, a keyboard, and a mouse. In this case, the communication adapter of the personal computer 20 ′ is connected to a router constituting the network N, and the hard disk of the personal computer 20 ′ has an OS program and stream data for integrated management of hardware and software. 7 is recorded, and a decoding program for separating, assembling, and decoding, and a stream content reproduction program for reproducing the stream content based on the audio and video elementary streams are recorded. The setting information table 221 of FIG. 8 is recorded.

Embodiment 2

  First, the remote monitoring system of the second embodiment will be briefly described. The remote monitoring system of the second embodiment is configured by the same hardware as that of the first embodiment. However, in the first embodiment, the subject that performs the field blur correction process is the relay device 13 of the photographing unit 10, whereas in the second embodiment, the subject that performs the field blur correction process is the display unit. 20 relay devices 22 are provided. Note that the subject that determines whether or not an earthquake has occurred is the relay device 13 of the photographing unit 10 as in the first embodiment. Hereinafter, the second embodiment will be described in detail.

  The remote monitoring system of the second embodiment has the same configuration as that of the first embodiment. That is, the remote monitoring system according to the second embodiment includes one or more photographing units 10, one or more display units 20, and an administrator terminal device 30, as shown in FIG. The units 10 and 20 and the administrator terminal device 30 are connected to each other via a network N.

  The photographing unit 10 includes a monitoring camera 11, a vibration sensor 12, and a relay device 13. Among these, the monitoring camera 11 and the vibration sensor 12 have the same functions as the monitoring camera 11 and the vibration sensor 12 of the first embodiment, respectively. Therefore, in the description of the second embodiment, descriptions of the monitoring camera 11 and the vibration sensor 12 are omitted. Further, as will be described later, the relay device 13 performs processing slightly different from that of the relay device 13 of the first embodiment.

  The display unit 20 includes a monitor 21 and a relay device 22. Among these, the monitor 21 has the same function as the monitor 21 of the first embodiment. Therefore, the description of the monitor 21 is omitted in the description of the second embodiment. Further, as will be described later, the relay device 22 performs processing slightly different from the relay device 22 of the first embodiment.

  Note that the monitoring camera 11, the vibration sensor 12, and the relay device 13 of the imaging unit 10 of the second embodiment correspond to the above-described imaging unit, vibration information acquisition unit, and transmission unit, respectively. The monitor 21 and the relay device 22 correspond to the display unit and the reception unit described above, respectively.

  FIG. 10 is an internal configuration diagram of the relay device 13 of the photographing unit 10 according to the second embodiment. As is clear from comparison between FIG. 10 and FIG. 2, the relay device 13 of the second embodiment includes the same hardware 13 a to 13 h as the relay device 13 of the first embodiment.

  In the EEPROM 13h of the relay apparatus 13 of the second embodiment, the OS program, the setting information table 131 as shown in FIGS. 3 and 4 and the encoding control program 132 are recorded as in the first embodiment. Has been.

  Here, the encoding control program 132 of the second embodiment instructs the visual field blur correction unit 22e not to always perform the visual field blur correction process. Further, the encoding control program 132 embeds the same correction instruction flag in the “correction instruction flag” field of the setting information table 131 as additional information in each PES in a normal state without an earthquake. In this manner, the codec unit 13f is instructed.

  By the way, as a method of embedding additional information in each PES, there is a method of using a part of the PES header option field inside the header extension part constituting the PES, as shown in FIG. As a method other than the method of embedding additional information in each PES, for example, a part of the header option field (in the case of IP, the IP header option field) included in the data encapsulated by the network interface unit 13g There is a method of using.

  Further, as shown in FIG. 10, an earthquake determination program 134 different from the switching program 133 of the first embodiment is installed in the EEPROM 13h of the relay device 13 of the second embodiment. FIG. 12 is a flowchart showing the contents of the earthquake determination process executed by the CPU 13a that has read the earthquake determination program 134.

  In the first step S201 after the start of the earthquake determination process, the CPU 13a waits until acceleration data is received from the vibration sensor 12 (S201; NO). When the acceleration data is received from the vibration sensor 12 (S201; YES), the CPU 13a advances the process to step S202.

  In step S202, the CPU 13a determines whether or not the received acceleration data exceeds a predetermined upper limit value. If the received acceleration data does not exceed the predetermined upper limit value (S202; NO), the CPU 13a advances the process to step S203.

  In step S203, the CPU 13a determines whether the correction instruction flag set in the setting information table (see FIG. 3 or FIG. 4) 131 is “0” or “1”. If the correction instruction flag set in the setting information table 131 is “0” (S203; 0), the CPU 13a advances the process to step S204.

  In step S204, the CPU 13a determines whether or not the additional information embedded in the PES header option field of each PES by the codec unit 13f is “1”. When the additional information embedded in the PES header option field of each PES by the codec unit 13f is not “1” (S204; NO), the CPU 13a returns the process to step S201, and the codec unit 13f returns the processing for each PES. If the additional information embedded in the PES header option field is “1” (S204; YES), the process proceeds to step S205.

  In step S205, the CPU 13a instructs the codec unit 13f to change the additional information embedded in the PES header option field of each PES to “0”. After the instruction, the CPU 13a returns the process to step S201.

  On the other hand, if the correction instruction flag set in the setting information table (see FIG. 3 or FIG. 4) 131 is “1” in step S203 (S203; 1), the process proceeds to step S206.

  In step S206, the CPU 13a determines whether or not the additional information embedded in the PES header option field of each PES by the codec unit 13f is “1”. If the additional information embedded in the PES header option field of each PES by the codec unit 13f is “1” (S206; YES), the CPU 13a returns the process to step S201, and the codec unit 13f returns the processing for each PES. If the additional information embedded in the PES header option field is not “1” (S206; NO), the process proceeds to step S207.

  In step S207, the CPU 13a instructs the codec unit 13f to change the additional information embedded in the PES header option field of each PES to “1”. After the instruction, the CPU 13a returns the process to step S201.

  In step S202, if the received acceleration data exceeds a predetermined upper limit value (S202; YES), the CPU 13a advances the process to step S208.

  In step S208, the CPU 13a determines whether or not the additional information embedded in the PES header option field of each PES by the codec unit 13f is “1”. When the additional information embedded in the PES header option field of each PES by the codec unit 13f is not “1” (S208; NO), the CPU 13a returns the process to step S201, and the codec unit 13f returns the processing for each PES. If the additional information embedded in the PES header option field is “1” (S206; YES), the process proceeds to step S209.

  In step S209, the CPU 13a instructs the codec unit 13f to change the additional information embedded in the PES header option field of each PES to “0”. After the instruction, the CPU 13a returns the process to step S201.

  In addition, CPU13a which performs step S201, S202, S208, and S209 is equivalent to the earthquake discrimination | determination part mentioned above.

  FIG. 13 is an internal configuration diagram of the relay device 22 of the display unit 20 according to the second embodiment. As is clear from comparison between FIG. 13 and FIG. 6, the relay device 22 of the second embodiment includes the same hardware 22 a to 22 h as the relay device 22 of the first embodiment.

  Similarly to the first embodiment, an OS program, a setting information table 221 as shown in FIGS. 7 and 8, and a decode control program 222 are recorded in the EEPROM 22h of the relay device 22 of the second embodiment. Has been. However, as shown in FIG. 13, a display switching program 223 that does not exist in the first embodiment is installed in the EEPROM 22h. FIG. 14 is a flowchart showing the contents of the display switching process executed by the CPU 22a that has read the display switching program 223.

  In the first step S301 after the start of the display switching process, the CPU 22a waits until stream data is received (S301; NO). When the stream data is received (S301; YES), the CPU 22a advances the process to step S302.

  In step S302, the CPU 22a acquires additional information in the PES header option field of the PES based on the stream data from the codec unit 22f.

  In the next step S303, the CPU 22a determines whether the additional information is “0” or “1”. If the additional information is “0” (S303; 0), the CPU 22a advances the process to step S304.

  In step S304, the CPU 22a determines whether or not the function of the visual field blur correction unit 13e is enabled. Then, when the function of the field blur correction unit 22e is disabled (S304; NO), the CPU 22a returns the process to step S301, and when the function of the field blur correction unit 22e is enabled (S304; YES). ), The process proceeds to step S305.

  In step S305, the CPU 22a instructs the visual field blur correction unit 13e to stop the visual field blur correction process. After the instruction, the CPU 22a returns the process to step S301.

  On the other hand, if the additional information is “1” in step S303 (S303; 1), the CPU 22a advances the process to step S306.

  In step S306, the CPU 22a determines whether or not the function of the visual field blur correction unit 13e is enabled. When the function of the field blur correction unit 22e is enabled (S306; YES), the CPU 22a returns the process to step S301, and when the function of the field blur correction unit 22e is disabled (S306; NO). ), The process proceeds to step S307.

  In step S307, the CPU 22a instructs the visual field blur correction unit 22e to start the visual field blur correction process. After the instruction, the CPU 22a returns the process to step S301.

  The CPU 22a that executes steps S301 to S307 corresponds to the switching unit described above.

  Since it is configured as described above, the remote monitoring system of the second embodiment operates as described below.

  As in the upper photographing unit 10 in FIG. 1, it is set in the relay device 13 that the transmission destination does not perform visual field blur correction processing (correction instruction flag = 0; see FIG. 3), and the vibration sensor If no acceleration exceeding 12 is detected, stream data having additional information “0” in the PES is transmitted from the relay device 13 (S201, S202; NO, S203). ; 0, S204, S205). Therefore, when receiving the stream data, the relay device 22 of the display unit 20 that is the transmission destination invalidates the function of the visual field blur correction unit 22e according to the additional information (S301, S302, S303; 0, S304, S305). As a result, the monitor 21 of the upper display unit 20 in FIG. 1 displays a moving image that is not subjected to visual field blur correction.

  Further, as in the lower photographing unit 10 in FIG. 1, the relay device 13 is set to the effect that the transmission destination performs the visual field blur correction process (correction instruction flag = 1; see FIG. 4), and When the vibration sensor 12 does not detect an acceleration exceeding a predetermined upper limit value, stream data having additional information “1” in the PES is transmitted from the relay device 13 (S201, S202; NO). , S203; 1, S206, S207). For this reason, when receiving the stream data, the relay device 22 of the display unit 20 as the transmission destination enables the function of the visual field blur correction unit 22e according to the additional information (S301, S302, S303; 1, S306, S307). As a result, the monitor 21 of the lower display unit 20 in FIG. 1 displays a moving image that has been subjected to visual field blur correction.

  Further, even if either the transmission destination performs the visual field blur correction process or the transmission destination does not perform the visual field blur correction process, the vibration sensor 12 is set. Stream data having additional information of “0” in the PES is transmitted from this relay device 22 (S201, S202; YES, S208, S209). Therefore, when the relay device 22 of the display unit 20 as the transmission destination receives this stream data, the function of the visual field blur correction unit 22e is invalidated according to the additional information (S301, S302, S303; 0, S304, S305). As a result, any monitor 21 of any display unit 20 displays a moving image that has not been subjected to visual field blur correction.

  Because of the operation as described above, even with the remote monitoring system according to the second embodiment, when an earthquake occurs, the state of the point where the earthquake occurred is displayed on any display unit 20 as a moving image with blurred vision. Can be observed through.

  By the way, in 2nd Embodiment, although the display unit 20 demonstrated as consisting of the monitor 21 and the relay apparatus 22, it is not limited to this. For example, as shown in FIG. 15, the display unit may be a personal computer 20 ″ including a main body to which a communication adapter is attached, a display, a speaker, a keyboard, and a mouse. In this case, the personal computer 20 ″ The communication adapter is connected to a router constituting the network N, and the hard disk of the personal computer 20 ″ has an OS program for managing hardware and software in an integrated manner, stream data is separated, assembled, and A decoding program for decoding, and a stream content reproduction program for reproducing stream content based on audio and video elementary streams are recorded, and the setting information table 2 in FIG. 7 or FIG. 1, and, the display switching program 223 is recorded.

Embodiment 3

  First, the remote monitoring system of the third embodiment will be briefly described. The remote monitoring system of the third embodiment has almost the same configuration as that of the first embodiment. However, the first embodiment is different from the first embodiment in that the main body that determines whether or not an earthquake has occurred is the photographing unit 10. There is no difference. Note that the subject that executes the visual field blur correction processing is the relay device 13 of the photographing unit 10 as in the first embodiment. Hereinafter, the third embodiment will be described in detail.

  FIG. 16 is a schematic configuration diagram of a remote monitoring system according to the third embodiment. As shown in FIG. 16, the remote monitoring system according to the third embodiment includes one or more photographing units 10, one or more display units 20, and an administrator terminal device 30. , 20 and the administrator terminal device 30 are connected to each other via a network N.

  The photographing unit 10 includes a monitoring camera 11 and a relay device 13, and does not include the vibration sensor 12 that constitutes the first embodiment. The surveillance camera 11 has the same function as the surveillance camera 11 of the first embodiment. Therefore, the description of the surveillance camera 11 is omitted in the description of the third embodiment. Further, as will be described later, the relay device 13 performs processing slightly different from that of the relay device 13 of the first embodiment.

  The display unit 20 includes a monitor 21 and a relay device 22. The monitor 21 and the relay device 22 have the same functions as the monitor 21 and the relay device 22 constituting the first embodiment. Therefore, the description of the display unit 20 is omitted in the description of the third embodiment.

  As in the first embodiment, the administrator terminal device 30 is a personal computer that is used when a contractor who installs the photographing unit 10 at each point manages the relay device 13, and includes a main body, a display, a keyboard, a mouse, and the like. It has. Further, a communication adapter is attached to the main body, and this communication adapter is connected to a router on the network N. In addition, a program for changing the contents recorded in the setting information table 131 of the relay device 13 is installed in the hard disk in the main body of the administrator terminal device 30.

  Further, in the third embodiment, the communication adapter of the administrator terminal device 30 is connected via the network N to each point unit constituting the earthquake detection system operated by the Japan Meteorological Agency, for example. Yes.

  Each point unit of the earthquake detection system is composed of at least a seismometer and a telemeter. The seismometer is a meter that generates seismic intensity information and magnitude information by performing predetermined arithmetic processing on the acceleration data output from the acceleration sensor, and the telemeter converts the seismic intensity information output from the seismometer into IP, IPX, or It is a communication device that encapsulates and transmits in accordance with DDP. In this telemeter, the address of the manager terminal device 30 is registered as a transmission destination of seismic intensity information. When the seismometer detects an acceleration based on an earthquake, the telemeter continues during the earthquake. The seismic intensity information is continuously transmitted to the manager terminal device 30.

  Furthermore, a program for transmitting information based on seismic intensity information to each relay device 13 is installed in the hard disk in the main body of the manager terminal device 30. The CPU in the main unit that has executed this program will only receive the seismic intensity information during the period in which the seismic intensity information is received from each telemeter through the communication adapter and the seismic intensity indicated by the seismic intensity information is equal to or greater than the predetermined seismic intensity. The earthquake information indicating that the error has occurred continues to be transmitted to all the relay devices 13.

  Note that the monitoring camera 11 and the relay device 13 of the imaging unit 10 of the third embodiment correspond to the imaging unit and the transmission unit, respectively, and the monitor 21 and the relay device 22 of the display unit 20 respectively display the above-described display. The administrator terminal device 30 corresponds to the vibration information acquisition unit and the earthquake determination unit described above. The seismic intensity information corresponds to the vibration information described above.

  FIG. 17 is a schematic configuration diagram of the relay device 13 of the photographing unit 10 according to the third embodiment. As is clear from comparison between FIG. 17 and FIG. 2, the relay device 13 of the third embodiment includes the same hardware 13 a to 13 h as the relay device 13 of the first embodiment. However, unlike the first embodiment, the vibration sensor 12 is not connected to the serial interface unit 13c of the relay device 13.

  Similarly to the first embodiment, an OS program, a setting information table 131 as shown in FIGS. 3 and 4, and an encoding control program 132 are recorded in the EEPROM 13h of the relay device 13 of the third embodiment. Has been. However, a switching program 135 having a different processing content from the switching program 133 of the first embodiment is installed in the EEPROM 13h. FIG. 18 is a flowchart showing the contents of the switching process executed by the CPU 13a that has read the switching program 135.

  In the first step S401 after the start of the switching process, the CPU 13a determines whether or not earthquake information is being received. And when earthquake information is not being received (S401; NO), CPU13a advances a process to step S402.

  In step S402, the CPU 13a determines whether the correction instruction flag set in the setting information table (see FIG. 3 or FIG. 4) 131 is “0” or “1”. If the correction instruction flag set in the setting information table 131 is “0” (S402; 0), the CPU 13a advances the process to step S403.

  In step S403, the CPU 13a determines whether or not the function of the visual field blur correction unit 13e is enabled. Then, when the function of the field blur correction unit 13e is not enabled (S403; NO), the CPU 13a returns the process to step S401, and when the function of the field blur correction unit 13e is enabled (S403; YES), the process proceeds to step S404.

  In step S404, the CPU 13a instructs the visual field blur correction unit 13e to stop the visual field blur correction process. After the instruction, the CPU 13a returns the process to step S401.

  On the other hand, if the correction instruction flag set in the setting information table (see FIG. 3 or FIG. 4) 131 is “1” in step S402 (S402; 1), the CPU 13a advances the process to step S405.

  In step S405, the CPU 13a determines whether or not the function of the visual field blur correction unit 13e is enabled. Then, when the function of the field blur correction unit 13e is enabled (S405; YES), the CPU 13a returns the process to step S101, and when the function of the field blur correction unit 13e is not enabled (S405; NO), the process proceeds to step S406.

  In step S406, the CPU 13a instructs the visual field blur correction unit 13e to start the visual field blur correction process. After the instruction, the CPU 13a returns the process to step S401.

  In step S401, if the earthquake information is being received (S401; YES), the CPU 13a advances the process to step S407.

  In step S407, the CPU 13a determines whether or not the function of the visual field blur correction unit 13e is valid. When the function of the field blur correction unit 13e is not enabled (S407; NO), the CPU 13a returns the process to step S101, and when the function of the field blur correction unit 13e is enabled (S407; YES), the process proceeds to step S408.

  In step S408, the CPU 13a instructs the visual field blur correction unit 13e to stop the visual field blur correction process. After the instruction, the CPU 13a returns the process to step S401.

  In addition, CPU13a which performs step S401, S407, and S408 is corresponded to the switching part mentioned above.

  Since it is configured as described above, the remote monitoring system according to the third embodiment operates as described below.

  It is set in the relay device 13 that the visual field blur correction processing is not performed as in the upper photographing unit 10 in FIG. 16 (correction instruction flag = 0; see FIG. 3), and the relay device 13 is an administrator. When the earthquake information is not received from the terminal device 30, the relay device 13 disables the function of the visual field blur correction unit 13e (S401; NO, S402; 0, S403, S404). For this reason, when the relay device 22 of the upper display unit 20 in FIG. 16 as the transmission destination receives the stream data from the relay device 13 of the photographing unit 10, the monitor 21 is not subjected to the field blur correction. Display moving images.

  Also, the relay device 13 is set to perform the visual field blur correction processing as in the lower display unit 20 in FIG. 16 (correction instruction flag = 1; see FIG. 4), and the relay device 13 When the earthquake information is not received from the manager terminal device 30, the relay device 13 enables the function of the visual field blur correction unit 13e (S401; NO, S402; 1, S405, S406). For this reason, when the relay device 22 of the upper display unit 20 in FIG. 16 that is the transmission destination receives the stream data from the relay device 13 of the photographing unit 10, the monitor 21 is subjected to field blur correction. Display moving images.

  Furthermore, even if either the fact that the visual field blur correction process is performed or the visual field blur correction process is not performed is set in the relay device 13 of the photographing unit 10, the relay device 13 receives the earthquake information. In this case, the relay device 13 invalidates the function of the visual field blur correction unit 13e (S401; YES, S407, S408). Therefore, when the relay device 22 of the display unit 20 that is the transmission destination receives the stream data from the relay device 13 of the photographing unit 10, the monitor 21 displays a moving image that has not been subjected to visual field blur correction.

  Since it operates as described above, even with the remote monitoring system of the third embodiment, when an earthquake occurs, the state of the point where the earthquake occurred is displayed on any display unit 20 as a moving image with blurred vision. Can be observed through.

  In the third embodiment, the display unit 20 may be a personal computer 20 ′ as shown in FIG. 9 as in the first embodiment.

Embodiment 4

  First, the remote monitoring system of the fourth embodiment will be briefly described. The remote monitoring system of the fourth embodiment has substantially the same configuration as that of the second embodiment, but differs in that the subject that determines whether or not an earthquake has occurred is not the photographing unit 10. And the judgment subject which is the difference is each point unit and manager terminal device 30 of the earthquake sensing system which constitute the remote monitoring system of a 3rd embodiment. That is, in the fourth embodiment, the determination subject in the second embodiment is replaced with each point unit and the administrator terminal device 30 in the third embodiment. Hereinafter, the fourth embodiment will be described in detail.

  The remote monitoring system of the fourth embodiment has the same configuration as that of the third embodiment. That is, the remote monitoring system of the fourth embodiment includes one or more photographing units 10, one or more display units 20, and an administrator terminal device 30, as shown in FIG. The units 10 and 20 and the administrator terminal device 30 are connected to each other via a network N.

  The photographing unit 10 includes a monitoring camera 11 and a relay device 13, and does not include the vibration sensor 12 that constitutes the second embodiment. The surveillance camera 11 has the same function as the surveillance camera 11 of the second embodiment. Therefore, the description of the monitoring camera 11 is omitted in the description of the fourth embodiment. Further, as will be described later, the relay device 13 performs processing slightly different from the relay device 13 of the second embodiment.

  The display unit 20 includes a monitor 21 and a relay device 22. The monitor 21 and the relay device 22 have the same functions as the monitor 21 and the relay device 22 constituting the second embodiment. Therefore, the description of the display unit 20 is omitted in the description of the fourth embodiment.

  As is apparent from a comparison between FIG. 16 and FIG. 1, the administrator terminal device 30 is connected to each point unit constituting an earthquake detection system operated by, for example, the Japan Meteorological Agency via the network N. Has been. The configuration of each point unit and the program installed in the hard disk of the administrator terminal device 30 were described in detail when the remote monitoring system of the third embodiment was described. Therefore, those descriptions are omitted in the description of the fourth embodiment.

  Note that the monitoring camera 11 and the relay device 13 of the imaging unit 10 of the fourth embodiment correspond to the imaging unit and the transmission unit, respectively, and the monitor 21 and the relay device 22 of the display unit 20 respectively display the above-described display. The manager terminal device 30 corresponds to the seismic intensity information acquisition unit and the earthquake discrimination unit described above.

  FIG. 19 is a schematic configuration diagram of the relay device 13 of the photographing unit 10 according to the fourth embodiment. As is clear from comparison between FIG. 19 and FIG. 10, the relay device 13 of the fourth embodiment includes the same hardware 13 a to 13 h as the relay device 13 of the second embodiment. However, unlike the second embodiment, the vibration sensor 12 is not connected to the serial interface unit 13c of the relay device 13.

  Also, in the EEPROM 13h of the relay device 13 of the fourth embodiment, the OS program, the setting information table 131 as shown in FIGS. 3 and 4 and the encoding control program 132 are recorded as in the second embodiment. Has been. However, a switching program 136 having a different processing content from the earthquake determination program 134 of the second embodiment is installed in the EEPROM 13h. FIG. 20 is a flowchart showing the contents of the switching process executed by the CPU 13a that has read the switching program 136.

  In the first step S501 after the start of the switching process, the CPU 13a determines whether or not earthquake information is being received. If the earthquake information is not being received (S501; NO), the CPU 13a advances the process to step S502.

  In step S502, the CPU 13a determines whether the correction instruction flag set in the setting information table (see FIG. 3 or FIG. 4) 131 is “0” or “1”. If the correction instruction flag set in the setting information table 131 is “0” (S502; 0), the CPU 13a advances the process to step S503.

  In step S503, the CPU 13a determines whether or not the additional information embedded in the PES header option field of each PES by the codec unit 13f is “1”. If the additional information embedded in the PES header option field of each PES by the codec unit 13f is not “1” (S503; NO), the CPU 13a returns the process to step S501, and the codec unit 13f returns the processing for each PES. If the additional information embedded in the PES header option field is “1” (S503; YES), the process proceeds to step S504.

  In step S504, the CPU 13a instructs the codec unit 13f to change the additional information embedded in the PES header option field of each PES to “0”. After the instruction, the CPU 13a returns the process to step S501.

  On the other hand, if the correction instruction flag set in the setting information table (see FIG. 3 or FIG. 4) 131 is “1” in step S502 (S502; 1), the process proceeds to step S505.

  In step S505, the CPU 13a determines whether or not the additional information embedded in the PES header option field of each PES by the codec unit 13f is “1”. If the additional information embedded in the PES header option field of each PES by the codec unit 13f is “1” (S505; YES), the CPU 13a returns the process to step S501, and the codec unit 13f If the additional information embedded in the PES header option field is not “1” (S505; NO), the process proceeds to step S506.

  In step S506, the CPU 13a instructs the codec unit 13f to change the additional information embedded in the PES header option field of each PES to “1”. After the instruction, the CPU 13a returns the process to step S501.

  In step S501, if the earthquake information is being received (S501; YES), the CPU 13a advances the process to step S507.

  In step S507, the CPU 13a determines whether or not the additional information embedded in the PES header option field of each PES by the codec unit 13f is “1”. If the additional information embedded in the PES header option field of each PES by the codec unit 13f is not “1” (S507; NO), the CPU 13a returns the process to step S501, and the codec unit 13f returns the processing for each PES. If the additional information embedded in the PES header option field is “1” (S507; YES), the process proceeds to step S508.

  In step S508, the CPU 13a instructs the codec unit 13f to change the additional information embedded in the PES header option field of each PES to “0”. After the instruction, the CPU 13a returns the process to step S501.

  In addition, CPU13a which performs step S501, S507, and S508 is corresponded to the switching part mentioned above.

  Since it is configured as described above, the remote monitoring system according to the fourth embodiment operates as described below.

  As in the upper photographing unit 10 in FIG. 16, it is set in the relay device 13 that the transmission destination performs the field blur correction process (correction instruction flag = 0; see FIG. 3), and the relay device 13. However, when the earthquake information is not received from the administrator terminal device 30, the relay device 13 transmits the stream data having the additional information “0” in the PES (S501; NO, S502; 0). , S503, S504). For this reason, when receiving the stream data, the relay device 22 of the display unit 20 as the transmission destination invalidates the function of the visual field blur correction unit 22e according to the additional information (S301, S302, S303; 0, S304, S305). As a result, the monitor 21 of the upper display unit 20 in FIG. 16 displays a moving image that has not been subjected to visual field blur correction.

  Further, as in the lower photographing unit 10 in FIG. 16, the relay device 13 is set so that the transmission destination performs the field blur correction process (correction instruction flag = 1; see FIG. 4), and the relay is performed. When the device 13 has not received the earthquake information from the administrator terminal device 30, stream data having additional information “1” in the PES is transmitted from the relay device 13 (S501; NO, S502). ; 1, S505, S506). Therefore, when receiving the stream data, the relay device 22 of the display unit 20 that is the transmission destination enables the function of the visual field blur correction unit 22e according to the additional information (S301, S302, S303; 1, S306, S307). As a result, the monitor 21 of the lower display unit 20 in FIG. 16 displays a moving image that has undergone visual field blur correction.

  Further, even if either the transmission destination performs the visual field blur correction process or the transmission destination does not perform the visual field blur correction process is set in the relay apparatus 13 of the photographing unit 10, the relay apparatus 13 If the earthquake information is received, stream data having additional information “0” in the PES is transmitted from the relay device 13 (S501; YES, S507, S508). For this reason, when receiving the stream data, the relay device 22 of the display unit 20 as the transmission destination invalidates the function of the visual field blur correction unit 22e according to the additional information (S301, S302, S303; 0, S304, S305). As a result, any monitor 21 of any display unit 20 displays a moving image that has not been subjected to visual field blur correction.

  Because of the operation as described above, even with the remote monitoring system according to the fourth embodiment, when an earthquake occurs, the state of the point where the earthquake occurred is displayed on any display unit 20 as a moving image with a blurred field of view. Can be observed through.

  In the fourth embodiment as well, as in the second embodiment, the display unit 20 may be a personal computer 20 ″ as shown in FIG.

Embodiment 5

  First, the remote monitoring system of the fifth embodiment will be briefly described. The remote monitoring system of the fifth embodiment is different from the first to fourth embodiments described above in that the administrator terminal device 30 is not provided. In the remote monitoring system of the fifth embodiment, the user of the display unit 20 can select whether or not to apply visual field blur correction to image data in a normal state where no earthquake has occurred. Hereinafter, the fifth embodiment will be described in detail.

  FIG. 21 is a schematic configuration diagram of a remote monitoring system according to the fifth embodiment. As shown in FIG. 21, the remote monitoring system of the fifth embodiment includes one or more photographing units 10 and one or more display units 20, and each unit 10, 20 has a network N. Are connected to each other.

  The photographing unit 10 includes a monitoring camera 11, a vibration sensor 12, and a relay device 13. Among these, the monitoring camera 11 and the vibration sensor 12 have the same functions as the monitoring camera 11 and the vibration sensor 12 of the first embodiment, respectively. Therefore, in the description of the fifth embodiment, descriptions of the monitoring camera 11 and the vibration sensor 12 are omitted. Further, as will be described later, the relay device 13 performs processing slightly different from that of the relay device 13 of the first embodiment.

  The display unit 20 includes a monitor 21, a relay device 22, a user terminal device 23, and a router 24. Among these, the monitor 21 has the same function as the monitor 21 of the first embodiment. Therefore, the description of the monitor 21 is omitted in the description of the fifth embodiment. Further, as will be described later, the relay device 22 performs processing slightly different from the relay device 22 of the first embodiment.

  The user terminal device 23 is a personal computer for rewriting the contents of the setting information table 221 in the relay device 22. The user terminal device 23 will be described in detail later. The router 24 is a relay device that relays data between the relay device 22 and the user terminal device 23 and other routers on the network N.

  Note that the monitoring camera 11, the vibration sensor 12, and the relay device 22 of the imaging unit 10 of the fifth embodiment correspond to the above-described imaging unit, vibration information acquisition unit, and transmission unit, respectively. The monitor 21 and the relay device 22 correspond to the display unit and the reception unit described above, respectively.

  FIG. 22 is a schematic configuration diagram of the relay device 13 of the photographing unit 10 according to the fifth embodiment. As is apparent from a comparison between FIG. 22 and FIG. 2, the relay device 13 of the fifth embodiment includes the same hardware 13 a to 13 h as the relay device 13 of the first embodiment.

  Similarly to the first embodiment, an OS program, a setting information table 137, and an encoding control program 138 are recorded in the EEPROM 13h of the relay device 13 according to the fifth embodiment. However, a program corresponding to the switching program 133 of the first embodiment is not installed in the EEPROM 13h.

  The setting information table 137 is a table for setting a transmission destination when stream data is transmitted from the relay device 13. 23 and 24 are diagrams illustrating an example of the data structure of the setting information table 137. 23 shows an example of the setting information table 137 recorded in the relay device 13 of the upper photographing unit 10 in FIG. 21, and FIG. 24 shows the recording in the relay device 13 of the lower photographing unit 10 in FIG. An example of the set information table 137 is shown. The setting information table 137 in FIGS. 23 and 24 has the same number of records as the transmission destination of the stream data. Each record has fields of “own IP address” and “destination IP address”. As is apparent from a comparison between FIGS. 23 and 24 and FIGS. 3 and 4, the setting information table 137 of the fifth embodiment includes a correction instruction flag indicating whether or not the transmission destination performs visual field blur correction processing. Is not recorded.

  The encoding control program 138 is a program that causes the relay device 13 to function as an encoder. That is, the CPU 13a that has executed the encoding control program 138 causes the audio video interface unit 13d to function as a pre-processing unit and the codec unit 13f to function as a multiplexing unit. Thus, after the audio data and video data output from the surveillance camera 11 are digitized in the audio video interface unit, if the function of the visual field blur correction unit 13e is disabled, the codec unit 13f encodes the audio data and video data. It is converted into stream data by packetization and multiplexing, and is transmitted to the relay device 22 of the display unit 20 by the network interface unit 13g.

  However, the encoding control program 138 of the fifth embodiment instructs the visual field blur correction unit 13e not to always perform the visual field blur correction process. The encoding control program 138 instructs the network interface unit 13g to transmit the acceleration data received from the vibration sensor 12 to the relay device 22 of the display unit 20. As a method for transmitting the acceleration data, a part of the option field (in the case of IP, the option field of the IP header) in the header of the data capsule generated by the network interface unit 13g encapsulating the stream data is used. There is a method to use.

  From the above, the relay device 13 of the fifth embodiment functions in the same manner as a conventional encoder except that the acceleration data is transmitted to the display unit 20.

  FIG. 25 is an internal configuration diagram of the relay device 22 of the display unit 20 according to the fifth embodiment. As is clear from comparison between FIG. 25 and FIG. 6, the relay device 22 of the fifth embodiment includes the same hardware 22 a to 22 h as the relay device 22 of the first embodiment.

  In addition, an OS program is recorded in the EEPROM 22h of the relay device 22 of the second embodiment, and a setting information table 224, a decode control program 222, and a switching program 225 are recorded. Among these, the decode control program 222 has the same function as the decode control program 222 of the first embodiment. Therefore, the description of the decoding control program 222 is omitted in the description of the fifth embodiment.

  The setting information table 224 is a table for setting a transmission source when the relay device 22 receives stream data. 26 and 27 are diagrams illustrating an example of the data structure of the setting information table 224. 26 shows an example of the setting information table 224 recorded in the relay device 22 of the upper display unit 20 in FIG. 21, and FIG. 27 shows a record in the relay device 22 of the lower display unit 20 in FIG. An example of the set information table 224 is shown. The setting information table 224 of FIG. 26 and FIG. 27 has one record including fields of “own IP address”, “destination IP address”, and “correction instruction flag”. As apparent from comparison between FIGS. 26 and 27 and FIGS. 7 and 8, the setting information table 224 of the fifth embodiment includes a correction indicating whether or not the relay device 22 performs the field blur correction process. An instruction flag is recorded.

  The switching program 225 is a program for forcibly releasing the function of the field blur correction unit 13e when acceleration data received from the relay device 13 of the photographing unit 10 exceeds a predetermined upper limit value. FIG. 28 is a flowchart showing the contents of the switching process executed by the CPU 22a that has read the switching program 225.

  In the first step S601 after the start of the switching process, the CPU 22a waits until stream data is received (S601; NO). When the stream data is received (S601; YES), the CPU 22a advances the process to step S602.

  In step S602, the CPU 22a acquires acceleration data embedded in the option field of the header when the stream data is encapsulated from the network interface unit 22g.

  In step S603, the CPU 22a determines whether or not the acquired acceleration data exceeds a predetermined upper limit value. If the received acceleration data does not exceed the predetermined upper limit value (S603; NO), the CPU 22a advances the process to step S604.

  In step S604, the CPU 22a determines whether the correction instruction flag set in the setting information table (see FIG. 26 or FIG. 27) 224 is “0” or “1”. If the correction instruction flag set in the setting information table 224 is “0” (S604; 0), the CPU 22a advances the process to step S605.

  In step S605, the CPU 22a determines whether or not the function of the visual field blur correction unit 22e is enabled. Then, when the function of the field blur correction unit 22e is disabled (S605; NO), the CPU 22a returns the process to step S601, and when the function of the field blur correction unit 22e is enabled (S605; YES). ), The process proceeds to step S606.

  In step S606, the CPU 22a instructs the visual field blur correction unit 22e to stop the visual field blur correction process. After the instruction, the CPU 22a returns the process to step S601.

  On the other hand, when the correction instruction flag set in the setting information table (see FIG. 26 or FIG. 27) 224 is “1” in step S604 (S604; 1), the CPU 13a advances the process to step S607.

  In step S607, the CPU 22a determines whether or not the function of the visual field blur correction unit 22e is enabled. When the function of the field blur correction unit 22e is enabled (S607; YES), the CPU 22a returns the process to step S601, and when the function of the field blur correction unit 22e is disabled (S607; NO). ), The process proceeds to step S608.

  In step S608, the CPU 22a instructs the visual field blur correction unit 22e to start the visual field blur correction process. After the instruction, the CPU 22a returns the process to step S601.

  In step S603, when the received acceleration data exceeds a predetermined upper limit value (S603; YES), the CPU 22a advances the process to step S609.

  In step S609, the CPU 22a determines whether or not the function of the visual field blur correction unit 22e is enabled. Then, when the function of the visual field blur correction unit 22e is disabled (S609; NO), the CPU 22a returns the process to step S601, and when the function of the visual field blur correction unit 22e is enabled (S609; YES). ), The process proceeds to step S610.

  In step S610, the CPU 22a instructs the visual field blur correction unit 22e to stop the visual field blur correction process. After the instruction, the CPU 22a returns the process to step S601.

  The CPU 22a that executes steps S601 to S603 corresponds to the above-described earthquake determination unit, and the CPU 22a that executes steps S609 and S610 corresponds to the above-described switching unit.

  Since it is configured as described above, the remote monitoring system of the fifth embodiment operates as described below.

  21 is set in the relay device 22 so that the visual field blur correction processing is not performed as in the upper display unit 20 in FIG. 21 (correction instruction flag = 0; refer to FIG. 26), and from the photographing unit 10 together with the stream data When the acquired acceleration data does not exceed the predetermined upper limit value, the relay device 22 invalidates the function of the visual field blur correction unit 22e (S601, S602, S603; NO, S604; 0, S605, S606). ). For this reason, the monitor 21 of the display unit 20 displays a moving image that has not been subjected to visual field blur correction.

  In addition, as in the lower display unit 20 in FIG. 21, the relay apparatus 22 is set to perform the visual field blur correction process (correction instruction flag = 1; see FIG. 27), and a stream is output from the photographing unit 10. When the acceleration data acquired together with the data does not exceed the predetermined upper limit value, the relay device 22 enables the function of the visual field blur correction unit 22e (S601, S602, S603; NO, S604; 0, S607). , S608). For this reason, the monitor 21 of the display unit 20 displays a moving image that has been subjected to visual field blur correction.

  Furthermore, even if either the fact that the visual field blur correction process is performed or the visual field blur correction process is not performed is set in the relay device 22 of the display unit 20, the acceleration data acquired together with the stream data from the photographing unit 10 is If the predetermined upper limit value is exceeded, the relay device 22 invalidates the function of the visual field blur correction unit 22e (S601, S602, S603; YES, S609, S610). For this reason, the monitor 21 of the display unit 20 displays a moving image that has not been subjected to visual field blur correction.

  In order to operate as described above, according to the remote monitoring system of the fifth embodiment, when an earthquake occurs, the state of the point where the earthquake occurred is displayed on any display unit 20 with a blurred visual field. It becomes possible to observe through the image.

  Incidentally, as described above, the user terminal device 23 is a personal computer and includes a main body, a display, a keyboard, a mouse, and the like. A communication adapter is attached to the main body, and this communication adapter is connected to the router 24. Furthermore, a program for changing the contents recorded in the setting information table 224 of the relay device 22 is installed in the hard disk in the main body of the administrator terminal device 30.

  The person in charge of managing the relay device 22 executes this program in the hard disk of the user terminal device 23 and inputs a predetermined command, thereby being recorded in the setting information table 224 of the relay device 22. The contents can be changed. That is, the manager in charge changes the contents of the “correction instruction flag” field of the setting information table 224 of the relay device 22 to change the display unit 20 including the relay device 22 to a normal state where no earthquake has occurred. Whether or not the display unit 20 displays a moving image that has been subjected to visual field blur correction in the state can be specified.

  In the fifth embodiment, the display unit 20 is described as including the monitor 21, the relay device 22, the user terminal device 23, and the router 24. However, the present invention is not limited to this. For example, as shown in FIG. 29, the display unit may be composed of only the user terminal device 23 '. In this case, the communication adapter of the user terminal device 23 ′ is connected to a router that constitutes the network N, and an OS for managing hardware and software in an integrated manner on the hard disk of the user terminal device 23 ′. A program, a decoding program for separating and assembling and decoding stream data, and a stream content reproduction program for reproducing stream content based on audio and video elementary streams are recorded. 26 or 27, the setting information table 224 and the switching program 225 are recorded.

(Appendix 1)
An imaging unit that sequentially generates image data of a subject image,
A field blur correction unit that performs field blur correction on the image data sequentially generated by the photographing unit and outputs the image data;
A vibration information acquisition unit that acquires vibration information indicating the magnitude of vibration when the point where the photographing unit is installed vibrates;
An earthquake discriminating unit for discriminating whether or not an earthquake has occurred at a point where the imaging unit is installed, based on the vibration information acquired by the vibration information acquiring unit;
Only when the earthquake determination unit determines that an earthquake has occurred at the point where the photographing unit is installed, the visual field blur correction unit outputs the image data without performing visual field blur correction processing on each image data. Switching unit for instructing
A transmission unit for transmitting the image data output from the visual field blur correction unit;
A receiving unit that receives the image data from the transmitting unit via a network; and
A remote monitoring system comprising a display unit that displays a moving image based on each image data received by the receiving unit.

(Appendix 2)
An imaging unit that sequentially generates image data of a subject image,
A transmission unit that transmits the image data sequentially generated by the imaging unit;
A receiving unit for receiving the image data from the transmitting unit via a network;
A visual field blur correction unit that performs visual field blur correction on the image data received by the receiving unit and outputs the image data;
A vibration information acquisition unit that acquires vibration information indicating the magnitude of vibration when the point where the photographing unit is installed vibrates;
An earthquake discriminating unit for discriminating whether or not an earthquake has occurred at a point where the imaging unit is installed, based on the vibration information acquired by the vibration information acquiring unit;
Only when the earthquake determination unit determines that an earthquake has occurred at the point where the photographing unit is installed, the visual field blur correction unit outputs the image data without performing visual field blur correction processing on each image data. A switching unit for instructing to, and
A remote monitoring system comprising a display unit that displays a moving image based on each image data output from the visual field blur correction unit.

(Appendix 3)
The additional information 1 or 2, wherein the vibration information generation unit acquires vibration information about a point where the photographing unit is installed by detecting vibration with a vibration sensor installed in the vicinity of the photographing unit. Remote monitoring system.

(Appendix 4)
The vibration information acquisition unit acquires seismic intensity information output from another earthquake detection system for vibration generated at a point where the photographing unit is installed as vibration information about the point. 2. The remote monitoring system according to 2.

(Appendix 5)
The transmission unit compresses each image data according to a predetermined video compression standard and transmits the compressed data.
The remote monitoring system according to any one of appendices 1 to 4, wherein the receiving unit expands each received image data after receiving each compressed image data.

(Appendix 6)
A relay device connected to a camera that sequentially generates image data of a subject image and a display device that displays a moving image based on each image data;
A field blur correction unit for performing field blur correction on the image data sequentially generated by the camera and outputting the image data;
A vibration information acquisition unit that acquires vibration information indicating the magnitude of vibration when a point where the camera is installed vibrates;
An earthquake discriminating unit that discriminates whether or not an earthquake has occurred at a point where the camera is installed, based on the vibration information acquired by the vibration information acquiring unit;
Only when the earthquake discriminating unit determines that an earthquake is occurring at the point where the camera is installed, the visual field blur correcting unit is output without performing the visual field blur correcting process on each image data. A switching unit for instructing, and
A relay apparatus comprising: a transmission unit that transmits the image data output from the visual field blur correction unit.

(Appendix 7)
A relay device connected to a photographing device that sequentially generates and transmits image data of a subject image and a monitor that displays a moving image based on each image data;
A receiving unit that receives the image data from the imaging device via a network;
A field blur correction unit that performs field blur correction on the image data received by the receiver and outputs the image data to the monitor;
A vibration information acquisition unit that acquires vibration information indicating the magnitude of vibration when the point where the photographing apparatus is installed vibrates;
Based on the vibration information acquired by the vibration information acquisition unit, an earthquake determination unit that determines whether an earthquake has occurred at a point where the imaging device is installed, and
The visual field blur correction unit outputs the image data without performing the visual field blur correction process on each image data only while the earthquake determination unit determines that an earthquake is occurring at the point where the photographing apparatus is installed. A relay device comprising a switching unit for instructing the relay device.

(Appendix 8)
Computer
Receiving means for receiving each image data from the photographing device through a receiving device connected via a network to a photographing device that sequentially generates and transmits image data of the subject image;
Visual field blur correction means for performing visual field blur correction on the image data received by the receiving means and outputting to the display device;
Vibration information acquisition means for acquiring vibration information indicating the magnitude of vibration when a point where the photographing apparatus is installed vibrates;
Based on the vibration information acquired by the vibration information acquisition means, an earthquake determination means for determining whether an earthquake has occurred at a point where the imaging device is installed, and
Only when it is determined by the earthquake determination means that an earthquake has occurred at the point where the photographing apparatus is installed, the visual field blur correction means outputs the image data without performing the visual field blur correction processing on each image data. A display control program that functions as switching means for instructing the display.

(Appendix 9)
Computer
Receiving means for receiving each image data from the photographing device through a receiving device connected via a network to a photographing device that sequentially generates and transmits image data of the subject image;
Visual field blur correction means for performing visual field blur correction on the image data received by the receiving means and outputting to the display device;
Vibration information acquisition means for acquiring vibration information indicating the magnitude of vibration when a point where the photographing apparatus is installed vibrates;
Based on the vibration information acquired by the vibration information acquisition means, an earthquake determination means for determining whether an earthquake has occurred at a point where the imaging device is installed, and
Only when it is determined by the earthquake determination means that an earthquake has occurred at the point where the photographing apparatus is installed, the visual field blur correction means outputs the image data without performing the visual field blur correction processing on each image data. A computer-readable medium storing a display control program for functioning as a switching means for instructing to a computer.

Schematic configuration diagram of the remote monitoring system of the first embodiment 1 is an internal configuration diagram of a relay device of a photographing unit according to a first embodiment. The figure which shows an example of the data structure of a setting information table The figure which shows an example of the data structure of a setting information table Flow chart showing contents of switching process The internal block diagram of the relay apparatus of the display unit of 1st Embodiment The figure which shows an example of the data structure of a setting information table The figure which shows an example of the data structure of a setting information table Schematic configuration diagram of a remote monitoring system which is a modification of the first embodiment The internal block diagram of the relay apparatus of the imaging | photography unit of 2nd Embodiment Configuration diagram of PES generated in codec section Flow chart showing the contents of earthquake judgment processing The internal block diagram of the relay apparatus of the display unit of 2nd Embodiment Flow chart showing contents of display switching process Schematic configuration diagram of a remote monitoring system which is a modification of the second embodiment Schematic configuration diagram of a remote monitoring system of a third embodiment Schematic block diagram of the relay device of the photographing unit of the third embodiment Flow chart showing contents of switching process Schematic block diagram of the relay device of the photographing unit of the fourth embodiment Flow chart showing contents of switching process Schematic configuration diagram of a remote monitoring system of a fifth embodiment Schematic block diagram of the relay device of the photographing unit of the fifth embodiment The figure which shows an example of the data structure of a setting information table The figure which shows an example of the data structure of a setting information table The internal block diagram of the relay apparatus of the display unit of 5th Embodiment The figure which shows an example of the data structure of a setting information table The figure which shows an example of the data structure of a setting information table Flow chart showing contents of switching process Schematic block diagram of a remote monitoring system which is a modification of the fifth embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Image | photographing unit 11 Surveillance camera 12 Vibration sensor 13 Relay device (encoder)
13a CPU
13b RAM
13c Serial interface unit 13d Audio video interface unit 13e Field blur correction unit 13f Codec unit 13g Network interface unit 13h EEPROM
131 Setting Information Table 132 Encoding Control Program 133 Switching Program 134 Earthquake Determination Program 135 Switching Program 136 Switching Program 137 Setting Information Table 138 Encoding Control Program 20 Display Unit 20 ′ Display Unit (Personal Computer)
20 "display unit (personal computer)
21 Monitor 22 Relay device (decoder)
22a CPU
22b RAM
22c Serial interface section 22d Audio video interface section 22e Field blur correction section 22f Codec section 22g Network interface section 22h EEPROM
221 Setting information table 222 Decoding control program 223 Display switching program 224 Setting information table 225 Switching program 23 User terminal device 23 ′ User terminal device 24 Router 30 Administrator terminal device

Claims (5)

An imaging unit that sequentially generates image data of a subject image,
A field blur correction unit that performs field blur correction on the image data sequentially generated by the photographing unit and outputs the image data;
A vibration information acquisition unit that acquires vibration information indicating the magnitude of vibration when the point where the photographing unit is installed vibrates;
An earthquake discriminating unit for discriminating whether or not an earthquake has occurred at a point where the imaging unit is installed, based on the vibration information acquired by the vibration information acquiring unit;
Only when the earthquake determination unit determines that an earthquake has occurred at the point where the photographing unit is installed, the visual field blur correction unit outputs the image data without performing visual field blur correction processing on each image data. Switching unit for instructing
A transmission unit for transmitting the image data output from the visual field blur correction unit;
A receiving unit that receives the image data from the transmitting unit via a network; and
A remote monitoring system comprising a display unit that displays a moving image based on each image data received by the receiving unit. An imaging unit that sequentially generates image data of a subject image,
A transmission unit that transmits the image data sequentially generated by the imaging unit;
A receiving unit for receiving the image data from the transmitting unit via a network;
A visual field blur correction unit that performs visual field blur correction on the image data received by the receiving unit and outputs the image data;
A vibration information acquisition unit that acquires vibration information indicating the magnitude of vibration when the point where the photographing unit is installed vibrates;
An earthquake discriminating unit for discriminating whether or not an earthquake has occurred at a point where the imaging unit is installed, based on the vibration information acquired by the vibration information acquiring unit;
Only when the earthquake determination unit determines that an earthquake has occurred at the point where the photographing unit is installed, the visual field blur correction unit outputs the image data without performing visual field blur correction processing on each image data. A switching unit for instructing to, and
A remote monitoring system comprising a display unit that displays a moving image based on each image data output from the visual field blur correction unit. The vibration information generation unit acquires vibration information about a point where the photographing unit is installed by detecting vibration with a vibration sensor installed in the vicinity of the photographing unit. The remote monitoring system described. 2. The vibration information acquisition unit acquires seismic intensity information output from another earthquake detection system for vibration generated at a point where the photographing unit is installed as vibration information about the point. Or the remote monitoring system of 2 description. A relay device connected to a photographing device that sequentially generates and transmits image data of a subject image and a monitor that displays a moving image based on each image data;
A receiving unit that receives the image data from the imaging device via a network;
A field blur correction unit that performs field blur correction on the image data received by the receiver and outputs the image data to the monitor;
A vibration information acquisition unit for acquiring vibration information indicating the magnitude of vibration when an earthquake occurs at a point where the photographing apparatus is installed;
Based on the vibration information acquired by the vibration information acquisition unit, an earthquake determination unit that determines whether an earthquake has occurred at a point where the imaging device is installed, and
The visual field blur correction unit outputs the image data without performing the visual field blur correction process on each image data only while the earthquake determination unit determines that an earthquake is occurring at the point where the photographing apparatus is installed. A relay device comprising a switching unit for instructing the relay device.

Images