JP2019125878A - Video display system - Google Patents

Abstract

To provide a video display system capable of complementing video data stored in a server device more accurately.SOLUTION: A video display system 10 includes photographing devices 20a to 20c, and a server device 40 for storing video data wirelessly transmitted from the photographing devices 20a to 20c in a storage medium 42 as storage video data, and it is possible to display the storage video data on a display device 50. The photographing devices 20a to 20c include a storage medium 23 for storing video data as complementation video data. The server device 40 executes video data complementation processing of acquiring complementation video data corresponding to a missing part from the photographing devices 20a to 20c on the basis of the determination that the missing part is present in the storage video data stored in the storage medium 42.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a video display system.

  Conventionally, there is an image display system described in Patent Document 1 below. In the image display system described in Patent Document 1, image data captured by a camera is wirelessly transmitted to a server device in real time and stored. Image data stored in the server device can be displayed by a personal computer or the like.

  In such an image display system, when wireless communication between the camera and the server device can not be established due to an abnormality of a public wireless network or the like, image data can not be transmitted from the camera to the server device. This is a factor causing a defect in the image data stored in the server device.

  Therefore, the camera of the image display system described in Patent Document 1 monitors whether wireless communication with the server device is established while transmitting image data to the server device. When the camera determines that the wireless communication with the server device is not established, the camera stores the image data in the SD card. Thereafter, when the camera determines that wireless communication with the server device has been established, the camera transmits the image data stored in the SD card to the server device, thereby losing the image data stored in the server device. Complement.

JP, 2016-92647, A

  By the way, in the image display system described in Patent Document 1, when the wireless communication between the camera and the server device is unstable, the wireless communication between the camera and the server device is established, but from the camera to the server Situations may arise where it is difficult to send image data to the device, or situations where it is not possible to send image data. In such a situation, since the server device can not properly acquire the image data of the camera, the image data stored in the server device is lost.

  On the other hand, when the wireless communication between the camera and the server device is unstable, the wireless communication between the camera and the server device is not completely blocked, and the wireless communication between them is barely established. It may have been. In such a case, when the camera determines that the wireless communication with the server device is established, the camera does not execute the process of storing the image data in the SD card. In such a situation, it is not possible to compensate for the missing part of the image data stored in the server device using the image data stored in the SD card. As described above, in the image display system described in Patent Document 1, there may be a possibility that the loss of image data stored in the server device can not be compensated in a situation where wireless communication between the camera and the server device is unstable. .

  The present disclosure has been made in view of such circumstances, and an object thereof is to provide a video display system capable of more accurately complementing video data stored in a server device.

  A video display system for solving the above problems comprises: a photographing device for photographing a subject and generating video data; and a server device for storing the video data wirelessly transmitted from the photographing device as the storage video data in the first storage unit. It is possible to display the storage video data on the display device. The imaging apparatus includes a second storage unit that stores video data obtained by shooting a subject as video data for complementation. The server device is a video data complementing process for acquiring from the imaging device a complementing video data corresponding to the missing portion based on the determination that the missing portion is present in the storage video data stored in the first storage unit. Run.

  According to this configuration, even if the server apparatus can not properly acquire the video data due to the instability of the wireless communication with the imaging apparatus, the server apparatus can not acquire the missing part in the storage video data. By executing the video data complementing process, the missing portion of the storage video data is complemented by the complementing video data stored in the second storage unit of the imaging device. This makes it possible to more accurately compensate for the missing portion of the video data stored in the server device.

In the above video display system, it is preferable that a plurality of imaging devices be provided, and the server device execute the video data complementing process in parallel on two or more imaging devices among the plurality of imaging devices.
According to this configuration, when there are a plurality of imaging devices, it is possible to compensate for the missing portion of the storage video data earlier.

In the above video display system, it is preferable that the server device execute the video data complementing process in the order set in advance for the plurality of imaging devices.
According to this configuration, it is possible to avoid a situation in which only the complementation of the storage video data corresponding to one of the plurality of imaging devices is significantly delayed.

  In the above video display system, when there are a plurality of missing parts in the storage video data stored in the first storage unit, the server device temporally displays the plurality of missing parts in the video data complementing process. It is preferable to preferentially obtain the video data for complementation corresponding to the old missing part from the imaging device.

According to this configuration, it is possible to supplement in order from the missing part of the temporally old storage video data.
In the above-described video display system, the server device generates video data for storage by performing predetermined video processing on video data transmitted from the imaging device, and the server device generates video data for storage from the video data transmitted from the imaging device. On the other hand, it is preferable to determine that a missing portion has occurred in the storage video data on the basis of occurrence of an abnormality when predetermined video processing is performed.

  According to this configuration, it can be easily determined whether or not there is a missing portion in the storage video data.

  According to the present disclosure, it is possible to provide a video display system capable of complementing video data stored in a server device more accurately.

FIG. 1 is a block diagram showing a schematic configuration of a video display system according to the embodiment. FIG. 2 is a chart showing an example of complementary video data stored in the storage medium of the imaging device of the embodiment. FIG. 3 is a chart showing an example of storage video data stored in the storage medium of the server device of the embodiment. FIG. 4 is a flowchart showing a procedure of video data storage processing executed by the server device of the embodiment. FIG. 5 is a chart showing an example of the defect table stored in the storage medium of the server device of the embodiment. FIG. 6 is a flowchart showing the procedure of the video data complementing process performed by the server device of the embodiment. FIG. 7 is a chart showing an example of the photographing device list stored in the storage medium of the server device of the embodiment. FIG. 8 is a diagram schematically showing an operation example of the first video data complementing process and the second video data complementing process of the embodiment.

Hereinafter, an embodiment of a video display system will be described with reference to the drawings. In order to facilitate understanding of the description, the same constituent elements in the drawings are denoted by the same reference numerals as much as possible, and redundant description will be omitted.
As shown in FIG. 1, the video display system 10 according to this embodiment includes a plurality of photographing devices 20 a to 20 c, a wireless communication unit 30, a server device 40, and a display device 50.

The plurality of photographing devices 20a to 20c have the same structure. Therefore, hereinafter, the structure of one of the plurality of imaging devices 20a to 20c will be described as a representative.
The imaging device 20a is installed at a predetermined place such as a construction site, and images the situation of the place. The imaging device 20 a includes an arithmetic processing unit 21, an imaging device 22, a storage medium 23, and a program storage memory 24.

The imaging device 22 is formed of a CCD image sensor, a CMOS image sensor, etc., and generates image data for imaging a subject in an imaging region and transmits the generated image data to the arithmetic processing unit 21. .
The storage medium 23 is composed of non-volatile memory such as flash memory including an SD card. The storage medium 23 can write and read data. In the present embodiment, the storage medium 23 corresponds to a second storage unit.

  The arithmetic processing unit 21 performs various processes for controlling the imaging device 20 a by executing various programs stored in advance in the program storage memory 24. Specifically, the arithmetic processing unit 21 converts the image data transmitted from the imaging device 22 into video data of a predetermined recording format, and performs processing for constantly storing the converted video data in the storage medium 23. In this process, the arithmetic processing unit 21 stores video data in the storage medium 23 every predetermined unit recording time Ta. As a result, as shown in FIG. 2, a plurality of video data VDS (t) to VDS (t−m · Ta) for each unit recording time Ta are stored in the storage medium 23. "T" indicates the current time. Also, "m" indicates an integer of 2 or more. Hereinafter, the video data VDS (t) to VDS (t−m · Ta) stored in the storage medium 23 are also referred to as “complementary video data VDS (t) to VDS (t−m · Ta)”. Further, the complementing video data VDS (t) to VDS (t−m · Ta) are collectively referred to as “complementing video data VDS”.

  As shown in FIG. 1, the arithmetic processing unit 21 is connected to the wireless communication unit 30 provided separately from the imaging device 20 a in a wired communication manner. The wireless communication unit 30 can connect to the Internet network 62 by performing wireless communication with the base station 61 of the mobile phone network 60. A server device 40 is connected to the Internet network 62. That is, the arithmetic processing unit 21 can perform wireless communication with the server device 40 via the wireless communication unit 30. The arithmetic processing unit 21 converts the image data transmitted from the imaging device 22 into video data VDR of a predetermined recording format, and constantly wirelessly transmits the converted video data VDR to the server device 40 in real time by the wireless communication unit 30. Processing is also done. Hereinafter, the video data VDR constantly transmitted from the imaging device 20a to the server device 40 is also referred to as “real-time video data VDR”.

The server device 40 stores video data transmitted from each of the plurality of photographing devices 20 a to 20 c and displays the video data on the display device 50 in response to a request from the display device 50. The server device 40 includes an arithmetic processing unit 41 and a storage medium 42.
The storage medium 42 is formed of a hard disk drive or the like capable of storing a large amount of data. The storage medium 42 can write and read data. The storage medium 42 stores various programs to be executed by the arithmetic processing unit 41 in advance. In the present embodiment, the storage medium 42 corresponds to a first storage unit.

  The arithmetic processing unit 41 performs various processing for controlling the server device 40 by executing various programs stored in the storage medium 42. For example, the arithmetic processing unit 41 executes video data storage processing for storing, in the storage medium 42, real-time video data VDR constantly transmitted from the plurality of photographing devices 20a to 20c. Specifically, the arithmetic processing unit 41 converts the recording format of the real-time video data VDR constantly transmitted from the plurality of imaging devices 20a to 20c into a recording format that can be displayed on the display device 50 in the video data storage process. After performing the processing, the converted video data is stored in the storage medium 42 as the storage video data VDD.

  The arithmetic processing unit 41 stores the storage video data VDD in the storage medium 42 for each of the plurality of imaging devices 20 a to 20 c and for each predetermined unit recording time Tb. Thereby, as shown in FIG. 3, the storage medium 42 stores a plurality of storage video data VDDa (t) to VDDa (tn-Tb) for each unit recording time Tb for each of the plurality of imaging devices 20a to 20c. , VDDb (t) to VDDb (tn-Tb), and VDDc (t) to VDDc (tn-Tb) are stored. Here, “n” represents an integer of 2 or more.

  In the present embodiment, the unit recording time Tb of the server device 40 is set to the same value as the unit recording time Tb of the imaging devices 20a to 20c. The time “n · Tb” is equal to the recording storage period of the storage video data VDD in the server device 40. The recording storage period is a period during which storage of recording data is guaranteed. Although there is a possibility that the storage video data VDD older than the time “t−n · Tb” is stored in the storage medium 42, such video data is not covered by the guarantee.

  The display device 50 shown in FIG. 1 includes a personal computer, a portable terminal, and the like provided with a display. When the server device 40 authenticates the display device 50 based on input information such as an ID code or a password input to the display device 50, the storage device 42 stores storage video data corresponding to the imaging device linked to the input information. , And transmits to the display device 50. For example, when the input information input to the display device 50 is the input information corresponding to the photographing device 20a, the server device 40 stores the storage video data VDDa (t) to VDDa (t−n) stored in the storage medium 42. The video data for storage corresponding to the designated time zone among Ta) is transmitted to the display device 50. Thereby, the display device 50 displays the storage video data transmitted from the server device 40 on the display. Therefore, the user operating the display device 50 can confirm the information of the location imaged by the imaging device 20 a through the storage video data displayed on the display device 50.

  By the way, in the video display system 10, when the wireless communication between the photographing devices 20a to 20c and the server device 40 becomes unstable, the server device 40 performs real time in spite of establishment of the wireless communication between them. There is a possibility that the video data VDR can not be received properly. In such a situation, the arithmetic processing unit 41 of the server device 40 can not store the appropriate storage video data VDD in the storage medium 42. Therefore, the storage video data stored in the storage medium 42 as a result There is a defect in VDD. If a loss occurs in the storage video data VDD stored in the storage medium 42, the storage video data VDD of the portion where the loss occurs can not be displayed on the display device 50, which causes inconvenience for the user.

  Therefore, in the video display system 10 according to the present embodiment, when the arithmetic processing unit 41 of the server device 40 executes the video data storage processing for storing the storage video data VDD in the storage medium 42, the storage video data VDD is stored. Determine if a defect has occurred. When it is determined that the storage video data VDD has a defect, the arithmetic processing unit 41 stores the loss information in the storage medium 42. The arithmetic processing unit 41 refers to the loss information of the storage video data VDD stored in the storage medium 42, and acquires the complement video data VDS corresponding to the time zone in which the loss occurs from the photographing devices 20a to 20c. By doing this, the video data complementing process for compensating for the loss of the storage video data VDD is performed.

  Next, specific procedures of the video data storage process and the video data complement process executed by the arithmetic processing unit 41 will be described. First, a specific procedure of the video data storage process will be described with reference to FIG. Note that the arithmetic processing unit 41 repeatedly executes the video data storage processing shown in FIG. 4 in the cycle of the unit recording time Ta while receiving the real time video data VDR transmitted from the imaging devices 20a to 20c. . In addition, the arithmetic processing unit 41 executes the video data storage processing shown in FIG. 4 individually for each of the plurality of photographing devices 20a to 20c. In the following, for the sake of convenience, the video data storage processing executed for the real-time video data VDR transmitted from the imaging device 20a will be representatively described.

  As shown in FIG. 4, the arithmetic processing unit 41 first executes a recording format conversion process as the process of step S10. The recording format conversion process is a process of converting the recording format of real-time video data VDR per unit recording time Ta transmitted from the imaging device 20a into a recording format that can be displayed on the display device 50, and creating storage video data VDD. It is.

  The arithmetic processing unit 41 determines whether or not there is a defect in the storage video data VDD as the process of step S11 following step S10. For example, when the server device 40 can not properly receive the real-time video data VDR transmitted from the imaging device 20a due to the instability of the communication, a data failure occurs in the real-time video data VDR. In such a case, in the recording format conversion process, since the storage video data VDD can not be appropriately generated, an abnormality occurs. Using this, the arithmetic processing unit 41 determines that there is a defect in the storage video data VDD based on the occurrence of an abnormality when executing the recording format conversion process.

  If the arithmetic processing unit 41 makes a negative determination in the determination processing of step S11, that is, if there is no loss in the storage video data VDD, the storage media 42 stores the created storage video data VDD as the processing of step S12. Remember. Further, the arithmetic processing unit 41 temporarily stores a series of processing after storing in the storage medium 42 that the video data of the time zone corresponding to the storage video data VDD has been registered as the processing of step S13. .

  If the arithmetic processing unit 41 makes a positive determination in the determination processing of step S11, that is, if there is a defect in the storage video data VDD, then the processing of step S14 is performed for the time zone corresponding to the storage video data VDD. After storing the fact that the video data is unregistered in the storage medium 42, the series of processing is temporarily ended.

  Such a video data storage process is executed in a cycle of the unit recording time Tb for each of the plurality of imaging devices 20a to 20c, whereby a defect table TD as shown in FIG. 5 is created in the storage medium 42. As shown in FIG. 5, the loss table TD includes storage video data VDDa (t) to VDDa (t−n · Tb) and VDDb (t) to VDDb (t) corresponding to the plurality of photographing devices 20 a to 20 c. It represents which of t-n · Tb) and VDDc (t) to VDDc (t-n · Tb) has a defect. Note that, in FIG. 5, the hatched video data indicates video data in which a loss occurs, and video data that is not hatched indicates video data in which a loss does not occur.

  Next, with reference to FIG. 6, a specific procedure of the video data complementing process performed by the arithmetic processing unit 41 will be described. The arithmetic processing unit 41 repeatedly executes the process shown in FIG. 6 at a predetermined cycle. Further, the arithmetic processing unit 41 executes a plurality of video data complementing processes in parallel by executing a plurality of tasks corresponding to the process shown in FIG. The arithmetic processing unit 41 shifts the start time of each of the plurality of video data complementing processes by a predetermined time.

  As shown in FIG. 6, the arithmetic processing unit 41 first reads the photographing device list LI from the storage medium 42 as the process of step S20. The photographing device list LI is, for example, a list of photographing devices 20a to 20c provided in the video display system 10 as shown in FIG. The imaging device list LI includes information of the order S and the flag F corresponding to the information of the imaging devices 20a to 20c, in addition to the information of the imaging devices 20a to 20c. The order S indicates the order of the photographing devices in which the storage video data VDD is complemented. The flag F indicates whether or not the video data complementing process is being performed on the corresponding imaging device. For example, when the flag Fa is in the on state, it indicates that the video data complementing process is being performed on the imaging device 20a. Further, when the flags Fb and Fc are in the OFF state, it indicates that the video data complementing process is not performed on the photographing devices 20b and 20c.

As illustrated in FIG. 6, the arithmetic processing unit 41 sets an imaging device corresponding to the value of the order S as a complementing target as the process of step S21 following step S20. The initial value of the order S is set to "1".
After that, as the processing of step S22, the arithmetic processing unit 41 determines whether another video data complementing process is being performed on the imaging device of order S. More specifically, the arithmetic processing unit 41 sends the imaging device of the order S to the imaging device of the order S based on the fact that the flag F corresponding to the value of the current order S is in the on state in the imaging device list LI shown in FIG. It is determined that another video data complementing process is being performed. In this case, the arithmetic processing unit 41 makes an affirmative determination in the process of step S22, and increments the value of the order S as the process of subsequent step S23. After that, the arithmetic processing unit 41 returns to the process of step S21, and resets the imaging device corresponding to the order S as an imaging device for video data complementation.

  If the arithmetic processing unit 41 makes a negative determination in the process of step S22, that is, if another video data complementing process is not performed on the imaging apparatus of order S, the imaging of order S is performed as the process of step S24. It is determined whether or not there is a defect in the storage video data VDD corresponding to the device. Specifically, the arithmetic processing unit 41 determines whether or not there is a defect in the storage video data VDD corresponding to the imaging device of order S by using the defect table TD shown in FIG. 5. Note that the storage video data VDD to be processed in step S24 is the storage video data VDD recorded in the period from the current time t to the time “t−n · Tb”, ie, storage within the recording storage period. Video data VDD. The arithmetic processing unit 41 excludes the storage video data VDD recorded before the time “t−n · Tb” from the target of the defect determination. As a result, the storage video data VDD recorded before time “t−n · Tb” is not targeted for complementation.

  If the arithmetic processing unit 41 makes a positive determination in the process of step S24, that is, if there is a defect in the storage video data VDD corresponding to the imaging apparatus of order S, the process corresponds to the order S as the process of step S25. After the flag F to be set is set to the on state, the video data VDS for complementation corresponding to the missing portion is acquired from the imaging device of order S as the processing of step S26. At this time, when there are a plurality of deletions in the storage video data VDD corresponding to the imaging device of the order S, the oldest temporal storage video data VDD among them is taken from the imaging device of the order S. get. Subsequently, in the processing of step S27, the arithmetic processing unit 41 stores the acquired complementary video data VDS as the storage video data VDD in the storage medium 42, thereby complementing the missing part of the storage video data VDD.

  After setting the flag F corresponding to the order S to the off state as the process of step S28 following step S27, the arithmetic processing unit 41 determines whether the order S has reached the maximum value Smax as the process of step S29. to decide. The maximum value Smax is equal to the number of imaging devices provided in the video display system 10, and is set to "3" in the present embodiment. If the arithmetic processing unit 41 makes a negative determination in the process of step S29, that is, if the order S has not reached the maximum value Smax, it increments the order S as the process of step S30 and then returns to the process of step S21. .

  When the arithmetic processing unit 41 makes an affirmative determination in the process of step S29, that is, when the order S reaches the maximum value Smax, the process S41 sets the order S to “1” and then a series of processes. Once. In this case, the arithmetic processing unit 41 executes the process shown in FIG. 6 again after a predetermined period has elapsed.

  Next, an operation example of the video display system 10 of the present embodiment will be described. Note that for the sake of simplicity, the case where the arithmetic processing unit 41 is executing two video data complementing processes in parallel will be described. Hereinafter, the two video data complementing processes performed by the arithmetic processing unit 41 will be referred to as “first video data complementing process” and “second video data complementing process”.

  When the first video data complementation process is started by the arithmetic processing unit 41, in the first video data complementation process, the complementation of the storage video data VDDa (t) to VDDa (tn-Tb) corresponding to the photographing device 20a Is started. Specifically, as shown in FIG. 5, when the storage video data VDDa (t− (n−3) · Tb) to VDDa (t− (n−7) · Tb) are missing, In 1 video data interpolation processing, among them, the storage video data VDDa (t− (n−3) · Tb), which is the oldest in time, is set as the interpolation target. Then, among the complementary video data VDS stored in the storage medium 23 of the photographing device 20a, the complementary video data corresponding to the recording time of the storage video data VDDa (t− (n−3) · Tb) is a server The arithmetic processing unit 41 of the device 40 acquires it from the imaging device 20a. The arithmetic processing unit 41 stores the video data for complementation acquired from the photographing device 20 a in the storage medium 42 as video data for storage VDDa (t− (n−3) · Tb). Thereby, the complementation of the storage video data VDDa (t− (n−3) · Tb) is completed.

  On the other hand, the second video data complementing process is started after a predetermined time has elapsed from the time when the first video data complementing process is started by the arithmetic processing unit 41. At the time when the second video data complementation process is started, the first video data complementation process is executed on the photographing device 20a, so in the second video data complementation process, it is next to the photographing device 20a in the photographing device list LI. The complementation of the storage video data VDDb (t) to VDDb (t−n · Tb) corresponding to the photographing device 20b, which is in the order of FIG. Specifically, as shown in FIG. 5, when the storage video data VDDb (t− (n−6) · Tb) and VDDa (t− (n−7) · Tb) are lost, In the first video data complementing process, among them, the oldest temporal storage video data VDDb (t− (n−6) · Tb) is set as a complementing target. Then, among the complementary video data VDS stored in the storage medium 23 of the photographing device 20b, the complementary video data corresponding to the recording time of the storage video data VDDb (t− (n−6) · Tb) The arithmetic processing unit 41 of the device 40 acquires it from the imaging device 20b. The arithmetic processing unit 41 stores the video data for complementation acquired from the photographing device 20 b in the storage medium 42 as video data for storage VDDb (t− (n−6) · Tb). Thereby, the complementation of the storage video data VDDb (t− (n−6) · Tb) is completed.

By sequentially executing the first video data complementing process and the second video data complementary process in this manner, complementation of the storage video data VDD is performed in the order as shown in FIG.
According to the video display system 10 of the present embodiment described above, it is possible to obtain the actions and effects shown in the following (1) to (5).

  (1) The server device 40 includes the storage medium 42 for storing the real-time video data VDR transmitted from the photographing devices 20a to 20c as the storage video data VDD. The server device 40 acquires video data corresponding to the defective portion from the imaging devices 20 a to 20 c based on the determination that the defective portion exists in the storage video data VDD stored in the storage medium 42. Execute complement processing. As a result, the wireless communication with the imaging devices 20a to 20c is destabilized, and the server device 40 can not appropriately acquire the real-time video data VDR, and a missing portion occurs in the storage video data VDD. When the server device 40 executes the video data complementing process, the missing portion of the storage video data VDD is complemented. Therefore, the storage video data VDD stored in the server device 40 can be complemented more properly.

(2) The server device 40 executes the video data complementing process in parallel on the two imaging devices of the imaging devices 20a to 20c. As a result, the missing portion of the storage video data VDD can be compensated earlier.
(3) As shown in FIG. 7, the server device 40 executes the video data complementing process in the order set in advance for the photographing devices 20a to 20c. As a result, since the video data complementing process is uniformly executed on all the photographing devices 20a to 20c, a situation in which only the complementation of the storage video data VDD corresponding to one photographing device is significantly delayed is avoided. be able to.

  (4) If there are a plurality of missing parts in the storage video data VDD, the server device 40 in the video data complementing process complements the video data VDS corresponding to the temporally old missing part among the plurality of missing parts. Are preferentially acquired from the photographing devices 20a to 20c. Thereby, it is possible to complement in order from the missing part of the storage video data VDD which is old in time.

  (5) When the server device 40 performs predetermined video processing on the real-time video data VDR transmitted from the imaging devices 20a to 20c, a defect occurs in the storage video data VDD because an abnormality occurs. It is determined that This makes it possible to easily determine whether or not there is a missing portion in the storage video data VDD.

In addition, the said embodiment can also be implemented with the following forms.
The server device 40 according to the above-described embodiment can determine whether or not a defective portion has occurred in the storage video data VDD by any method. For example, the server device 40 may determine that a missing portion has occurred in the storage video data VDD based on the occurrence of an abnormality in the communication with the imaging devices 20a to 20c.

  -Although the video display system 10 of the said embodiment is equipped with three imaging devices 20a-20c, the number of imaging devices with which the video display system 10 is provided can be changed arbitrarily. Further, three or more video data complementing processes may be executed in parallel by the server device 40 in accordance with the number of photographing devices. The server device 40 may execute only one video data complementing process.

  The server device 40 according to the above embodiment does not use the processing order of the photographing devices 20a to 20c as shown in FIG. It may be complemented preferentially. For example, as shown in FIG. 5, when there is a missing portion in the storage video data VDD, the server device 40 reads “VDDc (t− (n−2) · Tb) → VDDa (t− (n−3) Complementation may be performed by a plurality of video data complement processes in the order of Tb → VDDa (t− (n−4) · Tb) →.

  The server device 40 according to the above embodiment is not limited to one that preferentially complements a temporally old defective part, but complements from an arbitrary defective part when there are a plurality of defective parts in the storage video data VDD. It may be one. For example, the server device 40 may perform processing to preferentially compensate for the loss of the portion designated by the user by the operation of the display device 50.

The unit recording time Ta of the imaging devices 20a to 20c may be set to a value different from the unit recording time Tb of the server device 40.
The present disclosure is not limited to the above specific example. Those skilled in the art may appropriately modify the above-described specific example as long as the features of the present disclosure are included. The elements included in the specific examples described above, and the arrangement, conditions, shape, and the like of the elements are not limited to those illustrated, and can be changed as appropriate. The elements included in the above-described specific examples can be appropriately changed in combination as long as no technical contradiction arises.

10: Video display systems 20a to 20c: Shooting device 23: Storage medium (second storage unit)
40: server device 42: storage medium (first storage unit)
50: Display

Claims (5)

A photographing device for photographing a subject and generating video data; and a server device for storing the video data wirelessly transmitted from the photographing device as the storage video data in the first storage unit, the storage video data being An image display system capable of displaying on a display device, comprising:
The imaging device includes a second storage unit that stores video data obtained by shooting a subject as video data for complementation.
The server device is configured to obtain video data for complementation corresponding to the missing portion from the photographing device based on the determination that the missing portion is present in the storage video data stored in the first storage unit. Video display system that performs data interpolation processing. A plurality of the imaging devices are provided,
The video display system according to claim 1, wherein the server device executes the video data complementing process in parallel on two or more imaging devices among a plurality of the imaging devices. The video display system according to claim 2, wherein the server device executes the video data complementing process in a preset order for a plurality of the photographing devices. When a plurality of missing parts exist in the storage video data stored in the first storage unit, the server apparatus may, in the video data complementing process, a temporally old missing part among the plurality of the missing parts. The video display system according to any one of claims 1 to 3, wherein the video data for complementation corresponding to is preferentially acquired from the imaging device. The server device is
The storage video data is generated by performing predetermined video processing on the video data transmitted from the imaging device.
The apparatus according to any one of claims 1 to 4, wherein an abnormality occurs when the predetermined video processing is performed on the video data transmitted from the imaging device, thereby determining that a missing portion occurs in the storage video data. The video display system according to any one of the items.

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