JP2021039768A - Image distribution device, image distribution system, and image distribution method - Google Patents

Abstract

To cause a user of an image distribution device to grasp a situation.SOLUTION: An image distribution device of an embodiment comprises a receiving unit, a compression unit, a request reception unit, a determination unit, and a distribution unit. The receiving unit receives imaging data and position information. The compression unit compresses the imaging data after a predetermined time has passed to generate compressed imaging data. The request reception unit receives a delivery request at a desired time from an information processing device. The determination unit determines whether or not the desired time is a past time within a predetermined time from a current time. The distribution unit distributes a position image including an icon indicating a position of an on-vehicle device on map data to the information processing device based on the position information; the distribution unit distributes the imaging data for distribution to the information processing device when the judgment unit determines that the desired time is a past time within a predetermined time from the current time; and the distribution unit distributes the compressed imaging data to the information processing device when the judgment unit determines that the desired time is a time in the past before the predetermined time.SELECTED DRAWING: Figure 5

Description

Embodiments of the present invention relate to an image distribution device, an image distribution system, and an image distribution method.

Conventionally, an image pickup device of an in-vehicle device mounted on a vehicle stores image data that images an area where traffic congestion occurs and position information of an area where traffic congestion occurs detected from the position of the in-vehicle device. There is a known technology that provides users with the situation when traffic jams occur.

Japanese Unexamined Patent Publication No. 2013-020523

However, the image distribution device has a problem that it is difficult for the user to grasp the situation.

The image distribution device of the embodiment includes a reception unit, a compression unit, a request reception unit, a determination unit, and a distribution unit. The receiving unit receives the imaging data captured by the imaging device of the vehicle-mounted device mounted on the vehicle and the position information indicating the position of the vehicle-mounted device at each time. The compression unit compresses the imaging data after a predetermined time has passed since the imaging apparatus imaged the image, and generates compressed imaging data. The request reception unit receives a delivery request at a desired time from the information processing device. The determination unit determines whether or not the desired time is a past time within a predetermined time from the current time. The distribution unit distributes a position image including an icon indicating the position of the in-vehicle device on the map data to the information processing device based on the position information received by the reception unit, and the judgment unit desires the desired time within a predetermined time from the current time. When it is determined that the time is in the past, the imaging data for distribution is distributed to the information processing device, and when the determination unit determines that the desired time is in the past time before the predetermined time. Distributes the compressed imaging data to the information processing apparatus.

FIG. 1 is a diagram showing an example of the overall configuration of the image distribution system according to the first embodiment. FIG. 2 is a diagram showing an example of the hardware configuration of the in-vehicle device according to the first embodiment. FIG. 3 is a block diagram showing an example of the functional configuration of the in-vehicle device according to the first embodiment. FIG. 4 is a diagram showing an example of the hardware configuration of the image distribution server according to the first embodiment. FIG. 5 is a block diagram showing an example of the functional configuration of the image distribution server according to the first embodiment. FIG. 6 is a diagram showing an example of the table configuration of the location information database according to the first embodiment. FIG. 7 is a diagram showing an example of the table configuration of the attribute database according to the first embodiment. FIG. 8 is a diagram showing an example of the table configuration of the compressed data attribute database according to the first embodiment. FIG. 9 is a diagram showing an example of the table configuration of the authentication database according to the first embodiment. FIG. 10 is a diagram showing an example of the table configuration of the open range database according to the first embodiment. FIG. 11 is a diagram showing an example of a screen image of an image distributed by the image distribution server according to the first embodiment. FIG. 12 is a diagram showing an example of a screen image of the time selection screen according to the first embodiment. FIG. 13 is a diagram showing an example of a screen image of a screen displayed in response to the time selection according to the first embodiment. FIG. 14 is a block diagram showing an example of the functional configuration of the client terminal according to the first embodiment. FIG. 15 is a flowchart showing an example of the flow of the imaging process related to the in-vehicle device of the first embodiment. FIG. 16 is a flowchart showing an example of a processing flow from reception to storage of data related to the image distribution server of the first embodiment. FIG. 17 is a flowchart showing an example of a flow of compression processing of imaging data applied to the image distribution server of the first embodiment. FIG. 18 is a sequence diagram showing an example of the flow of image distribution processing according to the first embodiment. FIG. 19 is a flowchart showing an example of the flow of the imaging data search process according to the first embodiment. FIG. 20 is a sequence diagram showing an example of the flow of various request processing according to the first embodiment. FIG. 21 is a block diagram showing an example of the functional configuration of the image distribution server according to the second embodiment. FIG. 22 is a block diagram showing an example of the functional configuration of the client terminal according to the second embodiment. FIG. 23 is a sequence diagram showing an example of the flow of image distribution processing according to the second embodiment. FIG. 24 is a sequence diagram showing an example of the flow of various request processing according to the second embodiment.

(Embodiment 1)
FIG. 1 is a diagram showing an example of the overall configuration of the image distribution system 1 according to the present embodiment. As shown in FIG. 1, the image distribution system 1 according to the present embodiment includes in-vehicle devices 10A to Z, an image distribution server 20, and a client terminal 50. The in-vehicle devices 10A to Z, the image distribution server 20, and the client terminal 50 are connected to each other via a network such as the Internet.

In-vehicle devices 10A to Z are devices such as smartphones, tablet terminals, and drive recorders. As shown in FIG. 1, the in-vehicle devices 10A to Z are mounted on the vehicles 150A to Z, respectively. When the in-vehicle devices 10A to Z are generically referred to, they are referred to as in-vehicle devices 10. When the vehicles 150A to Z are generically referred to, they are referred to as vehicles 150.

The in-vehicle device 10 includes at least an image pickup device such as a camera and a position information acquisition device capable of acquiring position information such as a GPS signal. The image pickup device of the in-vehicle device 10 images the surroundings of the vehicle outside the vehicle 150. The position information acquisition device acquires the position information of the in-vehicle device 10. The in-vehicle device 10 transmits the image pickup data, the position information, and the time information to the image distribution server 20.

Here, the position information is the position coordinates of the current position of the in-vehicle device 10. For example, the position information indicates the position of the in-vehicle device 10 by latitude and longitude.

The image distribution server 20 receives imaging data, position information, and time information from the in-vehicle device 10. The image distribution server 20 is an example of the image distribution device according to the present embodiment.
The image distribution server 20 converts the received imaging data into a format capable of streaming distribution. Further, the image distribution server 20 compresses the converted imaging data after a predetermined time has passed from the imaging to generate compressed imaging data.

The image distribution server 20 receives the request from the client terminal 50 and distributes the converted image data or the compressed image data, and the image including the position image generated from the position information to the client terminal 50.
Here, the position image refers to an image in which an icon indicating the position of the in-vehicle device 10 at a certain time is displayed on the map data.

The client terminal 50 is a computer that receives image distribution from the image distribution server 20. The client terminal 50 may be a normal PC (Personal Computer), a smartphone, a tablet terminal, or the like. The client terminal 50 is an example of the information processing device in this embodiment.

Next, the details of the in-vehicle device 10 will be described.
FIG. 2 is a diagram showing an example of the hardware configuration of the in-vehicle device 10 according to the present embodiment. As shown in FIG. 2, the in-vehicle device 10 includes an image pickup device 101, a CPU 102, a ROM (Read Only Memory) 103, a flash memory 104, a timing circuit 105, a GPS receiver 106, a GPS antenna 107, and the like. It includes a display 108, a touch panel 109, and a communication device 110.

The image pickup device 101 is a camera that captures a moving image or a still image.
The CPU 102 is a control device that controls the entire in-vehicle device 10. For example, the CPU 102 realizes various configurations by executing a program or the like stored in the ROM 103.

The ROM 103 is a memory for storing readable data. For example, the ROM 103 stores a program or the like.

The timekeeping circuit 105 is a circuit having a timekeeping function. Further, the in-vehicle device 10 may adopt a configuration in which time information is acquired from the outside via a network or the like instead of the timekeeping circuit 105.

The GPS antenna 107 is an antenna capable of receiving GPS signals.
The GPS receiving unit 106 recognizes (acquires) the current position of the in-vehicle device 10 by receiving signals from several satellites in the sky via the GPS antenna 107.

The flash memory 104 is a storage medium that stores data such as imaging data captured by the imaging device 101 and position information recognized by the GPS receiving unit 106. A storage medium such as an HDD (Hard Disk Drive) may be provided instead of the flash memory 104.

The display 108 is a display device including a liquid crystal panel or the like. The display 108 displays an operation screen or the like of the in-vehicle device 10.

The touch panel 109 is an input device integrally formed on the display 108 and accepts user input. Further, instead of the touch panel 109, a configuration in which a user's operation is accepted by a physical keyboard or the like may be adopted.

The communication device 110 is an interface for the vehicle-mounted device 10 to send and receive data and signals to and from the image distribution server 20.

Next, the functional configuration of the in-vehicle device 10 will be described.
FIG. 3 is a block diagram showing an example of the functional configuration of the in-vehicle device 10 according to the present embodiment. As shown in FIG. 3, the in-vehicle device 10 includes an imaging data acquisition unit 11, an imaging data conversion unit 12, a time information acquisition unit 13, a position information acquisition unit 14, and a transmission unit 15.

The image pickup data acquisition unit 11 acquires the image pickup data captured by the image pickup apparatus 101. In the present embodiment, the captured data is a moving image. The imaging data acquisition unit 11 sends the acquired imaging data to the imaging data conversion unit 12.

The time information acquisition unit 13 acquires time information, which is the time when the image pickup device 101 has captured the image pickup data, from the timekeeping circuit 105. The time information acquisition unit 13 sends the acquired time information to the imaging data conversion unit 12 and the position information acquisition unit 14.

The imaging data conversion unit 12 associates the time information with the imaging data. Further, in order to efficiently transmit the captured data to the image distribution server 20, the format of the captured data is converted. The conversion referred to here means, for example, compressing the imaging data. As a compression method, for example, H. The 264 method may be adopted. The image pickup data conversion unit 12 associates the image pickup data converted for transmission with the time information and transmits the time information to the transmission unit 15.

The position information acquisition unit 14 acquires position information from the GPS receiving unit 106. The position information acquisition unit 14 continuously acquires position information at regular intervals from the start to the end of imaging by the imaging device 101. In the present embodiment, the fixed time is, for example, 2 seconds. The position information acquisition unit 14 associates the time information with the position information. The position information acquisition unit 14 transmits the position information and the time information in association with each other to the transmission unit 15.

The transmission unit 15 associates the imaged data acquired from the image pickup data conversion unit 12 and converted for transmission with the time information, and transmits the time information to the image distribution server 20. As the protocol used for transmitting the image data converted for transmission, for example, RTMP (Real Time Messaging Protocol) may be adopted. Further, the transmission unit 15 associates the position information acquired from the position information acquisition unit 14 with the time information and transmits the time information to the image distribution server 20.

Next, the details of the image distribution server 20 will be described.
FIG. 4 is a diagram showing an example of the hardware configuration of the image distribution server 20 according to the present embodiment. As shown in FIG. 4, the image distribution server 20 includes a CPU 201, a communication device 202, a ROM 203, and an HDD 204.

The CPU 201 is a control device that controls the image distribution server 20 as a whole. For example, the CPU 201 realizes various configurations by executing a program or the like stored in the ROM 203.

The communication device 202 is an interface for the image distribution server 20 to send and receive data and signals to and from the in-vehicle device 10 and the client terminal 50.

The ROM 203 is a memory for storing readable data. For example, the ROM 203 stores a program or the like.

The HDD 204 is a storage device that stores data acquired from the in-vehicle device 10, data after image processing, and the like.

Next, the functional configuration of the image distribution server 20 will be described.
FIG. 5 is a block diagram showing an example of the functional configuration of the image distribution server 20 according to the present embodiment. As shown in FIG. 5, the image distribution server 20 includes a receiving unit 21, a position information link unit 22, an imaging data conversion unit 23, a compression unit 24, a request reception unit 25, a calculation unit 26, and a determination unit. 27 and a distribution unit 28 are provided.

Further, the HDD 204 includes map data 900, vehicle ID database 901 (hereinafter referred to as “vehicle IDDB901”), position information database 902 (hereinafter referred to as “position information DB902”), imaging data 903, and attribute database 904 (hereinafter referred to as “vehicle IDDB901”). Hereinafter, "attribute DB 904"), compressed imaging data 905, compressed data attribute database 906 (hereinafter referred to as "compressed data attribute DB 906"), authentication database 907 (hereinafter referred to as "authentication DB 907"), and disclosure range. The database 908 (hereinafter referred to as "public range DB908") and the database 908 are stored.

The vehicle ID DB 901 is a database that stores a vehicle ID, which is identification information that uniquely identifies the vehicle 150 equipped with the in-vehicle device 10. The vehicle ID DB 901 stores the vehicle-mounted device 10 and the vehicle ID of the vehicle 150 on which the vehicle-mounted device 10 is mounted in association with each other.

The position information DB 902 is a database that stores the position information and the time information received from the in-vehicle device 10 in association with the vehicle ID of the vehicle 150 equipped with the in-vehicle device 10.
FIG. 6 is a diagram showing an example of the table configuration of the position information DB 902 according to the present embodiment. As shown in FIG. 6, the position information DB 902 is a database in which the time, the vehicle ID, and the position information are associated with each other.

The time is time information transmitted by the vehicle-mounted device 10 in association with the position information, and indicates the time when the position information acquisition unit 14 acquires the position information.
The vehicle ID is identification information for identifying the vehicle 150 equipped with the vehicle-mounted device 10 that is the source of the position information.
The position information is the position information transmitted from the in-vehicle device 10.

The image pickup data 903 is image data received from the in-vehicle device 10 and converted for transmission to the image distribution server 20 and converted for streaming distribution by the image pickup data conversion unit 23 described later. As the format for streaming distribution, for example, a format such as HLS (HTTP Live Streaming) may be adopted. Hereinafter, the term “imaging data 903” simply refers to the imaging data 903 converted for streaming distribution.

The attribute DB 904 is a database that stores the attribute information of the imaging data 903. For example, the attribute DB 904 specifies the time information associated with the imaged data received from the vehicle-mounted device 10 and converted for transmission, and the vehicle 150 equipped with the imaged data 903 and the vehicle-mounted device 10 from which the time information is acquired. The vehicle ID to be used is saved.

FIG. 7 is a diagram showing an example of the table configuration of the attribute DB 904 according to the present embodiment. As shown in FIG. 7, the attribute DB 904 is a database in which the time, the vehicle ID, and the file name of the imaging data are associated with each other.

The time is time information transmitted in association with the imaging data converted for transmission by the vehicle-mounted device 10, and indicates the time when the imaging device 101 imaged the imaging data.
The vehicle ID is identification information for identifying the vehicle 150 equipped with the vehicle-mounted device 10 that is the source of the imaged data converted for transmission.

The file name of the imaging data is identification information for identifying the imaging data 903 associated with the time and the vehicle ID. Any identification information that identifies the image pickup data 903 may be used, and not only the file name but also a management number, a path for saving the file, and the like may be registered.

Returning to FIG. 5, the compressed imaging data 905 is data obtained by compressing the imaging data 903 after a predetermined time has passed from the imaging by the compression unit 24 described later. As the file format used for compression, for example, MP4 may be adopted.

The compressed data attribute DB 906 is a database for storing the attribute information of the compressed imaging data 905. For example, the compressed data attribute DB 906 stores the time information associated with the compressed image data 905 and the vehicle ID that identifies the vehicle 150 equipped with the compressed image data 905 and the in-vehicle device 10 from which the time information is acquired. ..

FIG. 8 is a diagram showing an example of a table configuration of the compressed data attribute DB906 according to the present embodiment. As shown in FIG. 8, the compressed data attribute DB906 is a database in which the time, the vehicle ID, and the file name of the compressed imaging data are associated with each other.

The time is time information transmitted in association with the imaging data converted for transmission by the vehicle-mounted device 10, and indicates the time when the imaging device 101 imaged the imaging data. When a plurality of imaging data 903s are compressed into one compressed imaging data 905, the earliest time among the times associated with the compressed imaging data 903 is adopted.
The vehicle ID is identification information for identifying the vehicle 150 equipped with the vehicle-mounted device 10 that is the source of the imaged data converted for transmission.

The file name of the compressed imaging data is identification information for identifying the compressed imaging data 905 associated with the time and the vehicle ID. Any identification information that identifies the compressed image data 905 may be used, and not only the file name but also a management number, a path for saving the file, and the like may be registered.

Returning to FIG. 5, the authentication DB 907 is a database that stores the identification information of a user who can log in to the client terminal 50 in association with the authority of the user.
FIG. 9 is a diagram showing an example of the table configuration of the authentication DB 907 according to the present embodiment. As shown in FIG. 9, the authentication DB 907 is a database in which a user ID and an affiliation are associated with each other.

The user ID is identification information for uniquely identifying the user.
Affiliation indicates an organization such as a company to which the user specified by the user ID belongs. For example, as shown in FIG. 9, a user whose user ID is "USERA01" belongs to "Company A". Affiliation is an example of user authority in this embodiment. Not limited to the affiliation of the user, a configuration may be adopted in which the authority of the user is restricted by the amount of billing or the like.

Returning to FIG. 5, the disclosure range DB 908 is a database that stores the vehicle ID and the disclosure range of the imaging data and the position information of the in-vehicle device 10 mounted on the vehicle 150 of the vehicle ID in association with each other.
FIG. 10 is a diagram showing an example of the table configuration of the disclosure range DB908 according to the present embodiment. As shown in FIG. 10, the disclosure range DB908 is a database in which the vehicle ID and the disclosure range are associated with each other.

The vehicle ID is identification information for identifying the vehicle 150 equipped with the in-vehicle device 10 which is the transmission source of the captured image data and the position information converted for transmission.
The disclosure range is the range of the user who discloses the imaging data and the position information of the in-vehicle device 10 mounted on the vehicle 150 of the vehicle ID.

For example, as shown in FIG. 10, the disclosure range of the imaging data and the position information of the in-vehicle device 10 mounted on the vehicle 150 having the vehicle ID “A0001” is set to “public only to the user of company A”. That is, in the authentication DB 907 described with reference to FIG. 9, the user whose user ID is "USERA01" and whose affiliation is registered as "Company A" is the imaging data 903 and the compressed imaging data 905 associated with the vehicle ID "A0001". , The location information is open to the public. However, since the user whose user ID is "USERB01" is registered as "Company B" in the authentication DB 907, the image data 903, the compressed image data 905, and the position information associated with the vehicle ID "A0001" are recorded. Not included in the disclosure target.

On the other hand, in the disclosure range DB 908 shown in FIG. 10, the disclosure range of the imaging data and the position information of the in-vehicle device 10 mounted on the vehicle 150 with the vehicle ID “B0001” is set to “public to all users”. Therefore, both the user whose user ID is "USERA01" and the user whose user ID is "USERB01" are subject to disclosure of the imaging data 903, the compressed imaging data 905, and the position information associated with the vehicle ID "B0001". ..

Returning to FIG. 5, the receiving unit 21 receives the imaged data converted for transmission to the image distribution server 20 and the time information associated with the imaged data converted for the transmission from the vehicle-mounted device 10. The receiving unit 21 includes image data converted for transmission to the received image distribution server 20, time information associated with the imaged data converted for the transmission, and information for identifying the in-vehicle device 10 of the transmission source. Is sent to the imaging data conversion unit 23.

Further, the receiving unit 21 receives the position information and the time information associated with the position information from the in-vehicle device 10. The receiving unit 21 transmits the received position information, the time information associated with the position information, and the information for identifying the in-vehicle device 10 of the transmission source to the position information link unit 22. As the information that identifies the in-vehicle device 10 as the transmission source, for example, the MAC address of the in-vehicle device 10 may be adopted.

The position information link unit 22 receives the position information, the time information associated with the position information, and the information for identifying the in-vehicle device 10 of the transmission source from the reception unit 21. The position information link unit 22 acquires the vehicle ID of the vehicle 150 on which the in-vehicle device 10 of the transmission source is mounted from the vehicle ID DB 901. The position information link unit 22 stores the position information and the time information associated with the position information in the position information DB 902 in association with the vehicle ID acquired from the vehicle ID DB 901.

The image pickup data conversion unit 23 includes the image pickup data converted for transmission from the reception unit 21 to the image distribution server 20, the time information associated with the image pickup data converted for the transmission, and the in-vehicle device 10 of the transmission source. Receive information that identifies. The imaging data conversion unit 23 converts the imaging data converted for transmission to the image distribution server 20 into imaging data 903 in a format for streaming distribution, for example, a format such as HLS. When converted to the HLS format, the image data received by the receiving unit 21 and converted for transmission is divided into units at regular time intervals when converted to the image data 903 for streaming distribution. The image pickup data conversion unit 23 stores the image pickup data 903 in the HDD 204. The image pickup data conversion unit 23 is an example of the conversion unit in the present embodiment.

Further, the imaging data conversion unit 23 stores the attribute information of the imaging data 903 in the attribute DB 904. Specifically, the imaging data conversion unit 23 acquires the vehicle ID of the vehicle 150 on which the in-vehicle device 10 of the transmission source is mounted from the vehicle ID DB 901. The imaging data conversion unit 23 associates the time information associated with the imaging data converted for transmission with the vehicle ID acquired from the vehicle ID DB 901 and the file name of the imaging data 903 converted into a format for streaming distribution. And save it in the attribute DB904.

When the imaging data conversion unit 23 divides the imaging data received by the receiving unit 21 for transmission in order to convert it into a format for streaming distribution at regular time intervals, the divided imaging data 903 The start time is calculated, associated with the file name of each imaged data 903 after division, and saved in the item "time" of the attribute DB 904.

In the present embodiment, the position information link unit 22 and the image data conversion unit 23 adopt a configuration in which the vehicle ID is associated with the position information and the image data 903, but the present invention is not limited to this, and the in-vehicle device 10 is a vehicle in advance. A configuration may be adopted in which the image distribution data and the position information converted for transmission are transmitted to the image distribution server 20 in association with the ID.

In addition, the image pickup data conversion unit 23 performs image processing on the image pickup data 903 as needed. As an example of image processing, for privacy protection, the license plate of the captured vehicle may be detected from the imaged data 903, and the number may not be specified by mosaic processing or the like.

Further, in order to protect privacy, the imaging data conversion unit 23 may detect an imaged person from the imaging data 903 and perform mosaic processing or the like on the head so that the individual cannot be identified. Further, the imaging data conversion unit 23 adopts a configuration in which both the imaging data 903 subjected to such image processing and the imaging data 903 not subjected to image processing are separately stored and used properly depending on the user to be distributed. You may.

The compression unit 24 compresses the imaging data 903 converted into a format for streaming distribution, which has passed a predetermined time after the imaging device 101 of the in-vehicle device 10 has imaged, into a file format such as MP4, and compresses the imaging data. Generate 905. In the present embodiment, the predetermined time is, for example, 3 minutes.

Further, the compression unit 24 stores the attribute information of the compressed imaging data 905 in the compressed data attribute DB 906. Specifically, the compression unit 24 associates the time associated with the imaged data 903 before compression and the vehicle ID with the file name of the compressed imaged data 905 obtained by compressing the imaged data 903, and has a compressed data attribute. Save in DB906.

The compression unit 24 deletes the compressed image data 903 from the HDD 204. Further, the compression unit 24 deletes the record of the attribute DB 904 corresponding to the imaging data 903 for which the compression is completed.

By compressing the imaging data 903 by the compression unit 24, it is possible to prevent an increase in the disk capacity of the HDD 204. Further, when the compression unit 24 compresses the imaging data 903, the network load when the distribution unit 28, which will be described later, distributes the compressed imaging data 905 at a past time to the client terminal 50 is reduced. Instead of compressing all the imaging data 903, the imaging data 903 that has passed a predetermined time is targeted for compression because it does not impair the real-time performance of the imaging data 903 delivered to the client terminal 50, and is close to the present. This is because there is a high possibility that the user makes a display request for the past time by processing such as rewinding. Since the compressed imaging data 905 requires decompression processing for reproduction, it takes longer to reproduce on the screen at the time of distribution than the imaging data 903. Therefore, the imaging data 903 is not compressed until a predetermined time elapses from the current time.

In the present embodiment, the time when the imaging data 903 is captured is adopted as the reference for calculating the predetermined time, but the time is not limited to this, and the time when the receiving unit 21 receives the imaging data converted from the in-vehicle device 10 or the like. The time when the imaging data conversion unit 23 stores the imaging data 903 in the HDD 204 may be adopted as a reference for calculating the predetermined time.

In the present embodiment, the configuration in which the imaging data 903 and the compressed imaging data 905 are stored in the HDD 204 is adopted, but the present invention is not limited to this, and a configuration in which the imaging data 903 and the compressed imaging data 905 are stored in a storage medium such as a writable memory may be adopted. Further, the attribute information of the imaging data 903 and the compressed imaging data 905 stored in the attribute DB 904 and the compressed data attribute DB 906 may also be stored in a storage medium such as a writable memory.

The request receiving unit 25 receives various requests from the user from the client terminal 50. Specifically, the request receiving unit 25 requests the user's position display request, image data display request, pause request, rewind request, fast forward request, time selection screen display request, display target time selection, and image data distribution end. Requests such as a request and an image distribution end request are received from the client terminal 50.

The position display request is a request for distribution of a position image at a user's desired time. The request reception unit 25 receives the position display request, the user ID of the user who has logged in to the client terminal 50, and the user's desired time from the client terminal 50. The request reception unit 25 searches the authentication DB 907 for the authority of the user with the user ID. Then, the request reception unit 25 searches the disclosure range DB 908 for the vehicle ID included in the disclosure range by the user of the user ID. The request reception unit 25 sends the searched vehicle ID and the user's desired time to the calculation unit 26 and the distribution unit 28.

Further, the imaging data display request is a request for distribution of imaging data 903 at a time desired by the user. The imaging data display request is made by designating a specific vehicle ID. When the request receiving unit 25 receives the imaging data display request from the client terminal 50, the request receiving unit 25 sends the user's desired time and vehicle ID to the distribution unit 28. Further, the request reception unit 25 sends the user's desired time to the determination unit 27. The position display request and the imaging data display request are examples of distribution requests in the present embodiment.

The pause request is a request to suspend the position image and the imaging data 903 or the compressed imaging data 905 being distributed during the distribution of the image. When the client terminal 50 accepts that the user clicks the pause button on the screen, the client terminal 50 transmits a pause request to the request receiving unit 25. When the request receiving unit 25 receives the pause request, the request receiving unit 25 sends an instruction to suspend the position image, the imaging data 903 or the compressed imaging data 905 being distributed to the distribution unit 28.

FIG. 11 is a diagram showing an example of a screen image of an image distributed by the image distribution server 20 according to the present embodiment. The image shown in FIG. 11 is distributed to the client terminal 50 by the distribution unit 28 described later, and is displayed on a Web browser or the like on the display of the client terminal 50. As shown in FIG. 11, the image distributed by the image distribution server 20 includes a position image reproduction area 650, an imaging data reproduction area 660, a seek bar 670, a selection screen display button 653, and a search button 680. The imaging data reproduction area 660 includes a close button 681.

Further, the seek bar 670 includes a pointer (knob) 671 indicating a time position during playback and a pause button 672. Alternatively, the pause button 672 may adopt a configuration that is displayed separately from the seek bar 670. As shown in FIG. 11, a configuration may be adopted in which the date of the image currently being reproduced, the past time which is the limit of rewinding the image being reproduced, and the like are displayed on the seek bar 670.

In the distribution image of the present embodiment, since there is only one imaging data reproduction area 660 arranged on one screen, it is assumed that one vehicle ID is specified in the imaging data display request, but one vehicle ID is specified on one screen. A configuration may be adopted in which a plurality of imaging data reproduction areas 660 are arranged so that a plurality of vehicle IDs can be specified in the imaging data display request.

The rewind request is a request for distribution of the position image and the imaging data 903 or the compressed imaging data 905 at an arbitrary time in the past specified by the user operating the seek bar 670 on the screen during the distribution of the image.

Returning to FIG. 5, when the request reception unit 25 receives the rewind request from the client terminal 50, the calculation unit 26 and the distribution unit obtain the arbitrary time in the past specified by the user and the vehicle ID including the user in the disclosure range. Send to 28.

When a rewind request is made during the distribution of the imaging data 903 or the compressed imaging data 905, the request receiving unit 25 further transmits the vehicle ID of the imaging data 903 or the compressed imaging data 905 being distributed to the distribution unit 28. Send to. Further, the request receiving unit 25 sends an arbitrary time in the past designated by the user to the determination unit 27.

The seek bar 670 shown in FIG. 11 is an image for operation for playback control of the position image and the image pickup data 903 or the compressed image pickup data 905. The seek bar 670 indicates the time of the reproduced position image and the captured image data 903 or the compressed imaged data 905 by the position of the pointer 671 arranged on the seek bar 670. In addition, the pointer 671 accepts an operation from the user to specify an arbitrary time in the past. The seek bar 670 is an example of operation information in this embodiment.

Further, the user operates the seek bar 670 on the screen during the distribution of the past position image and the captured data 903 or the compressed imaging data 905 to specify a time closer to the current time than the past time currently being delivered. In that case, a fast-forward request is made.

Returning to FIG. 5, when the request receiving unit 25 receives the fast-forward request from the client terminal 50, the request receiving unit 25 sends the time specified by the user and the vehicle ID including the user in the disclosure range to the calculation unit 26. When a fast-forward request is made during the distribution of the imaging data 903 or the compressed imaging data 905, the request receiving unit 25 sets the time specified by the user and the vehicle ID of the imaging data 903 or the compressed imaging data 905 being distributed. It is sent to the distribution unit 28. Further, the request reception unit 25 sends the time specified by the user to the determination unit 27.

The display request of the time selection screen is to request that the user operate the selection screen display button 653 on the image to display the time selection screen on the screen during the distribution of the image.

The time selection screen is a screen that can accept the user's selection at any time in the past. While the seek bar 670 operates on the same screen to accept the rewinding and fast-forwarding operations for the position image and the imaging data 903 or the compressed imaging data 905 being delivered, the time selection screen is the past. The time is displayed as a choice and the user's selection is accepted.

FIG. 12 is a diagram showing an example of a screen image of the time selection screen 654 according to the present embodiment. In the example shown in FIG. 12, the time selection screen 654 is displayed on the right side of the position image reproduction area 650. The screen image of FIG. 12 is an example, and the time selection screen 654 may be displayed as a screen separate from the position image reproduction area 650.

As shown in FIG. 12, on the time selection screen 654, the past time that can be selected by the user is displayed as an option. In FIG. 12, as an example, the past time is divided into options in units of 30 minutes. Further, the user may press the calendar button 655 to select the time retroactively to the past date.

Other configurations of the distribution screen shown in FIG. 12 are the same as the configurations described in FIG. In FIG. 12, the position of the imaging data reproduction area 660 is shifted to the left of the screen, so that the image is not displayed. However, a configuration may be adopted in which the imaging data reproduction area 660 is continuously displayed by reducing the entire screen.

The time selection screen 654 may be a screen for selecting a time that is further past than the time that can be rewound by the seek bar 670. For example, it is assumed that the maximum rewindable time by the seek bar 670 is within the past 30 minutes, and the past time before this may be selected from the time selection screen. Further, the time selection screen 654 may not only display the past time as an option, but may also be a screen capable of accepting the user to input an arbitrary time. For example, the seek bar 670 is used to gradually go back to the past time while checking the imaging data 903 or the compressed imaging data 905, and when going back to the past in units of a longer time, the time selection screen 654 is used. It is possible to use it properly. In the present embodiment, by providing the time selection screen 654 separately from the seek bar 670, the user can select the past time more efficiently.

Returning to FIG. 5, when the request reception unit 25 receives the display request of the time selection screen from the client terminal 50, the request reception unit 25 sends an instruction to display the time selection screen to the distribution unit 28.

The selection of the display target time means that the client terminal 50 accepts that the user has selected the display target time on the time selection screen 654 shown in FIG.
FIG. 13 is a diagram showing an example of a screen image of a screen displayed in response to the time selection according to the present embodiment. When the user selects the option of "15:00 → 15:30" on the time selection screen 654 shown in FIG. 12, the start time of the time range selected by the user is "15:" as shown in FIG. The position image and the expanded compressed image data 905 at 00 ”are displayed. Other configurations of the distribution screen shown in FIG. 13 are the same as the configurations described in FIG.

Returning to FIG. 5, when the request reception unit 25 receives the user's selection of the display target time from the client terminal 50, the request reception unit 25 includes the time selected by the user and the vehicle ID including the user in the disclosure range in the calculation unit 26 and the distribution unit 28. Send to. Further, the request reception unit 25 sends the time selected by the user to the determination unit 27.

The imaging data distribution end request means that the client terminal 50 accepts that the user has requested the end of distribution of the imaging data 903 or the compressed imaging data 905 on the screen displaying the distributed image. For example, the user may request the end of image pickup data distribution by selecting and clicking the close button 681 provided in the image capture data reproduction area 660 on the screen shown in FIG. 11 with a mouse or the like.
Returning to FIG. 5, when the request receiving unit 25 receives the imaging data distribution end request from the client terminal 50, the request receiving unit 25 sends an instruction to end the imaging data distribution to the distribution unit 28.

The image distribution end request means that the client terminal 50 accepts the request for the end of the distribution of the position image, the image capture data 903, or the compressed image distribution data 905. For example, the user requests the end of image distribution by closing the screen of the Web browser displaying the position image, the image pickup data 903, or the compressed image pickup data 905. When the request reception unit 25 receives the image distribution end request from the client terminal 50, the request reception unit 25 sends an image distribution end instruction to the distribution unit 28.

The calculation unit 26 calculates the traveling direction and speed of the vehicle 150 from the position of the vehicle-mounted device 10 at a specific time and the position of the vehicle-mounted device 10 immediately before the specific time. Specifically, when the request reception unit 25 receives the position display request, the calculation unit 26 acquires the vehicle ID and the user's desired time from the request reception unit 25.

In this case, the specific time is a desired time obtained by the calculation unit 26 from the request reception unit 25 and requested by the user to display the position image.
Further, immediately before the specific time is, for example, the time when the position information is recorded before the specific time. Taking the position information DB 902 shown in FIG. 6 as an example, when the user requests the display of the position image at the time of "2016/7/22 17:00:04", immediately before the specific time, "2016/7" / 22 17:00:02 ". Alternatively, when the time interval for acquiring the position information is short and it is difficult to detect the movement amount of the position of the in-vehicle device 10 at a specific time and immediately before the specific time, the specific time is not immediately before the specific time. A configuration may be adopted in which the position information at a time in the past for a certain time from the time is used for calculating the traveling direction and the speed.

Returning to FIG. 5, the calculation unit 26 searches the position information DB 902 for the position of the vehicle-mounted device 10 at a specific time and the position of the vehicle-mounted device 10 immediately before the specific time, which is associated with the acquired vehicle ID. To do. Then, the calculation unit 26 calculates the traveling direction of the vehicle 150 corresponding to the acquired vehicle ID from the change in the position of the vehicle-mounted device 10 from immediately before the specific time to the specific time.

Further, the calculation unit 26 calculates the speed of the vehicle 150 from the moving distance of the in-vehicle device 10 from immediately before the specific time to the specific time and the time from immediately before the specific time to the specific time.

When there are a plurality of vehicle IDs acquired by the calculation unit 26 from the request reception unit 25, the calculation unit 26 calculates the traveling direction and traveling speed of each vehicle 150 from the position information associated with each of the plurality of vehicle IDs. To do. The calculation unit 26 similarly calculates the traveling direction and speed of the vehicle 150 when the request reception unit 25 receives a request such as a rewind request, a fast forward request, or a selection of a display target time. The calculation unit 26 sends the calculated traveling direction and speed of the vehicle 150 to the distribution unit 28 in association with the vehicle ID and the time.

When the request receiving unit 25 receives the imaging data display request, the determination unit 27 acquires the user's desired time from the request receiving unit 25. The determination unit 27 determines whether the user's desired time is a past time within a predetermined time from the current time or a past time before the predetermined time. The "past time within a predetermined time from the current time" includes the current time. The "predetermined time" is assumed to be equal to a predetermined time that serves as a reference when the compression unit 24 compresses the imaging data 903 to generate the compressed imaging data 905. As described above, the predetermined time in the present embodiment is 3 minutes.

That is, the determination unit 27 of the present embodiment determines whether the user's desired time is a past time within 3 minutes from the current time or a past time before 3 minutes. The determination unit 27 sends a determination result of whether the user's desired time is a past time within 3 minutes from the current time or a past time before 3 minutes to the distribution unit 28.

Similarly, when the request reception unit 25 receives a request such as a rewind request, a fast forward request, or a selection of a display target time, the judgment unit 27 obtains the time obtained from the request reception unit 25 within 3 minutes from the current time. It determines whether it is a past time or a past time before 3 minutes, and sends the determination result to the distribution unit 28.

The distribution unit 28 distributes the imaging data 903 or the compressed imaging data 905 to the client terminal 50 so as to be reproducible on the same screen as the position image.
"Distributing reproducibly on the same screen" means generating a single screen layout definition information in which a plurality of contents are arranged to be displayed on the same screen on the client terminal 50, and the generated screen layout definition. The information is distributed to the client terminal 50.
Here, the screen layout definition information is data that defines the layout of the content to be displayed on the screen on the screen, and corresponds to, for example, HTML format data.

Further, in the screen layout definition information, the distribution unit 28 displays the position image and the image for accepting the user's operation such as the seek bar 670 for the reproduction control of the compressed image data 903 or the compressed image data 905 in the position image and the image data 903. Alternatively, it is arranged on the same screen as the compressed image data 905 and distributed to the client terminal 50.

The position image reproduction area 650, the imaging data reproduction area 660, the seek bar 670, the selection screen display button 653, the search button 680, etc. in the image distributed by the image distribution server 20 shown in FIG. 11 are examples of the contents to be displayed on the screen. Yes, it is defined by the screen layout definition information generated by the distribution unit 28.

When the request receiving unit 25 receives the position display request, the distribution unit 28 acquires the vehicle ID to be disclosed and the user's desired time from the request receiving unit 25. The distribution unit 28 searches the position information DB 902 for the position information of the vehicle-mounted device 10 associated with the vehicle ID to be disclosed and the user's desired time.

The distribution unit 28 maps the map data 900 and the position information of each in-vehicle device 10 searched from the position information DB 902. Then, the distribution unit 28 displays an icon indicating the position of the in-vehicle device 10 at the user's desired time on the map data 900 to generate a position image.

In addition, the distribution unit 28 acquires the traveling direction and speed of the vehicle 150 associated with the vehicle ID from the calculation unit 26. The distribution unit 28 sets the direction of the icon indicating the position of the in-vehicle device 10 to be the same as the traveling direction of the vehicle 150. When the traveling direction of the vehicle 150 changes with the passage of time, the distribution unit 28 changes the direction of the icon indicating the position of the vehicle-mounted device 10 on the position image according to the traveling direction of the vehicle 150.

Further, the distribution unit 28 changes the display mode of the icon indicating the position of the in-vehicle device 10 on the position image according to the speed of the vehicle 150. "Changing the icon display mode" means changing the definition of the icon display mode in the screen layout definition information. The definition of the display mode is, for example, the definition of color. Specifically, the distribution unit 28 turns red when the speed of the vehicle 150 is 20 km / h or less, yellow when the speed is faster than 20 km / h and 40 km / h or less, and green when the speed is faster than 40 km / h, and icons in the screen layout definition information. A configuration may be adopted in which the definition of the color of is changed.

Here, the details of the position image distributed by the distribution unit 28 to the client terminal 50 will be described. As shown in FIG. 11, the position image distributed by the distribution unit 28 is displayed in the position image reproduction area 650. In the present embodiment, the distribution unit 28 displays a position image reproduction area 650, a seek bar 670, a selection screen display button 653, and a search button 680 when the request reception unit 25 receives the position display request. Layout definition information shall be generated and distributed. When the request receiving unit 25 receives the imaging data display request, the distribution unit 28 further generates and distributes screen layout definition information for displaying the imaging data reproduction area 660.

Further, as shown in FIG. 11, the position image is an image in which the icons 651a to 651ad indicating the position of the in-vehicle device 10 are displayed on the map data 900. Hereinafter, when the icons 651a to 651 are collectively referred to, they are referred to as icons 651.

The icon 651 displayed on the position image is generated by the user logged in to the client terminal 50 displaying the position image from the position information associated with the vehicle ID included in the disclosure range. Is.

For example, the user who is currently logged in to the client terminal 50 is the user with the user ID "USERA01". In the example of the disclosure range DB908 shown in FIG. 10, the vehicle IDs to be disclosed to the users of company A are "A0001", "B0001", "C0001", and "D0001".

The icon 651 in FIG. 11 is an image generated from the position information of the vehicle ID to be disclosed by the user of the user ID “USERA01”. The icon 651a in FIG. 11 indicates the position of the in-vehicle device 10A mounted on the vehicle 150A having the vehicle ID “A0001”. The icon 651b is an in-vehicle device 10B mounted on the vehicle 150B having a vehicle ID "B0001", the icon 651c is an in-vehicle device 10C mounted on the vehicle 150C having a vehicle ID "C0001", and the icon 651d is a vehicle having a vehicle ID "D0001". The positions of the in-vehicle devices 10D mounted on the 150D shall be indicated respectively.

As indicated by the seek bar 670 and the pointer 671 of the seek bar 670, the currently playing position image shows the positions of the in-vehicle devices 10A to D as of "July 22, 2016 17:07:15".

The icon 651a in FIG. 11 faces the northeast direction, which is a vehicle at "17:07:15 on July 22, 2016" equipped with the in-vehicle device 10A calculated by the calculation unit 26 from the position information. It shows that the traveling direction of 150A is the northeast direction. The other icons 651b to d also face the same direction as the traveling directions of the vehicles 150B to D as of "17:07:15 on July 22, 2016" calculated by the calculation unit 26 from the position information. To do.

In addition, the distribution unit 28 displays the icons 651 in colors corresponding to the speed of the vehicle 150 as of "17:07:15 on July 22, 2016" calculated by the calculation unit 26 from the position information. And.

When the request receiving unit 25 receives the imaging data display request, the distribution unit 28 acquires the user's desired time and vehicle ID from the request receiving unit 25. Further, the distribution unit 28 acquires a determination result from the determination unit 27 as to whether the user's desired time is the current time, a past time within 3 minutes from the current time, or a past time before 3 minutes. ..

When the user's desired time is the current time or a time in the past within 3 minutes from the current time, the distribution unit 28 uses the vehicle ID acquired from the request reception unit 25 and the user's desired time as search conditions. The attribute DB904 is searched. The distribution unit 28 specifies the vehicle ID acquired from the request reception unit 25 and the file name of the imaging data corresponding to the user's desired time. The distribution unit 28 reads the imaging data 903 corresponding to the file name of the searched imaging data from the HDD 204 and distributes it to the client terminal 50.

When the user's desired time is a time earlier than 3 minutes, the distribution unit 28 sets the compressed data attribute DB 906 using the vehicle ID acquired from the request reception unit 25 and the user's desired time as search conditions. search for. The distribution unit 28 specifies the vehicle ID acquired from the request reception unit 25 and the file name of the compressed imaging data corresponding to the user's desired time. The distribution unit 28 reads the searched compressed image data 905 from the HDD 204 and distributes it to the client terminal 50.

In the image pickup data reproduction area 660 shown in FIG. 11, the image pickup data 903 distributed by the distribution unit 28 is displayed. In the example shown in FIG. 11, the user logged in to the client terminal 50 selects the icon 651a from the icons 651 displayed on the position image and requests the imaging data display. The time indicated by the pointer 671 of the seek bar 670 is "July 22, 2016 17:07:15". In this case, the request receiving unit 25 receives the user's desired time "July 22, 2016 17:07:15" and the vehicle ID "A0001" corresponding to the icon 651a from the client terminal 50.

Here, it is assumed that "July 22, 2016 17:07:15" is the current time. In this case, the determination unit 27 determines that the user's desired time is the current time. The distribution unit 28 searches the attribute DB 904 on the condition of the vehicle ID "A0001" and "July 22, 2016 17:07:15", reads the searched imaging data 903 from the HDD 204, and sends it to the client terminal 50. To deliver.

In the image distribution system 1 of the present embodiment, after the image pickup device 101 of the in-vehicle device 10 takes an image, the image pickup data and the position information are transmitted to the image distribution server 20, and after the conversion process, they are stored in the HDD 204, and the user It will be delivered at high speed until it is delivered according to the request. Therefore, when the image distribution server 20 receives an imaging data display request specifying the current time from the user, the image distribution server 20 distributes the latest imaging data 903 stored in the HDD 204 as real-time imaging data 903.

When the imaging data 903 corresponding to the current time is not yet stored in the HDD 204, the distribution unit 28 distributes the latest imaging data 903 stored in the HDD 204. Alternatively, the distribution unit 28 may adopt a configuration in which the distribution process waits until the imaging data 903 at the specified time is stored in the HDD 204.

When the request reception unit 25 receives the suspension request, the distribution unit 28 receives a suspension instruction from the request reception unit 25. If only the position image is displayed on the screen at the time when the pause request is received, the distribution unit 28 stops the position image while displaying the state at the time when the pause request is received. If the position image and the imaging data 903 or the compressed imaging data 905 are displayed on the screen when the pause request is received, the distribution unit 28 remains displayed in the state at the time when the pause request is received. , Position image and imaging data 903 or compressed imaging data 905 are stopped.

When the request reception unit 25 receives the rewind request while the position image is being distributed, the distribution unit 28 acquires an arbitrary time in the past specified by the user from the request reception unit 25. The distribution unit 28 searches the position information DB 902, and the vehicle ID included in the disclosure range of the user logged in to the client terminal 50 currently being distributed is associated with the position associated with an arbitrary time in the past specified by the user. Get information.

Further, the distribution unit 28 acquires the traveling direction and speed of the vehicle 150 at an arbitrary time in the past specified by the user from the calculation unit 26. The distribution unit 28 maps the icon 651 indicating the position of the vehicle 150 at an arbitrary time in the past specified by the user with the map data 900 to generate a position image. In addition, the distribution unit 28 generates screen layout definition information in which the direction and color of the icon 651 on the position image are changed according to the traveling direction and speed of the vehicle 150. The distribution unit 28 distributes the position image and the screen layout definition information at an arbitrary time in the past specified by the user to the client terminal 50.

When a rewind request is made during distribution of the imaging data 903 or the compressed imaging data 905, the distribution unit 28 receives the request receiving unit 25 at an arbitrary time in the past specified by the user and the imaging data 903 being distributed. Alternatively, the vehicle ID of the compressed image data 905 is acquired. Then, the distribution unit 28 generates the position image and the screen layout definition information at an arbitrary time in the past specified by the user, as in the case where the request reception unit 25 receives the rewind request while the position image is being distributed.

Further, the distribution unit 28 acquires a determination result from the determination unit 27 whether the arbitrary time in the past specified by the user is within the past 3 minutes or in the past before 3 minutes. The distribution unit 28 searches for the attribute DB 904 or the compressed data attribute DB 906 based on the acquired determination result, and obtains the imaging data 903 or the compressed imaging data 905 associated with the vehicle ID of the imaging data 903 or the compressed imaging data 905 being distributed. Identify. Then, the distribution unit 28 distributes the position image and the imaging data 903 or the compressed imaging data 905 at an arbitrary time in the past designated by the user, and the screen layout definition information to the client terminal 50.

Even when the request receiving unit 25 receives the fast-forward request while the distribution unit 28 is delivering the position image, the distribution unit 28 at an arbitrary time in the past specified by the generated user, as in the case of the rewind request. The position image and screen layout definition information are distributed to the client terminal 50. Further, even if the request receiving unit 25 receives the fast-forward request while the distribution unit 28 is distributing the imaging data 903 or the compressed imaging data 905, the distribution unit 28 can also display the position image at an arbitrary time in the past specified by the user. The image pickup data 903 or the compressed image pickup data 905 and the screen layout definition information are distributed to the client terminal 50.

When the request reception unit 25 receives the display request of the time selection screen, the distribution unit 28 receives an instruction to display the time selection screen from the request reception unit 25. In this case, the distribution unit 28 distributes the screen layout definition information that defines the time selection screen to the client terminal 50 so that the time selection screen can be displayed on the screen.

When the request reception unit 25 accepts the selection of the display target time, the distribution unit 28 acquires the time selected by the user from the request reception unit 25 and the vehicle ID including the user in the disclosure range. The distribution unit 28 generates a position image at a time selected by the user in the same manner as the request reception unit 25 generates a position image at an arbitrary time in the past specified by the user when the request reception unit 25 receives the rewind request. Deliver to the client terminal 50. Further, the distribution unit 28 distributes the imaging data 903 or the compressed imaging data 905 at the time selected by the user to the client terminal 50 according to the determination of the determination unit 27.

When the distribution unit 28 receives an instruction from the request reception unit 25 to end the distribution of the imaging data, the distribution unit 28 ends the distribution of the imaging data 903 or the compressed imaging data 905 being distributed. When the distribution unit 28 receives the instruction of the image distribution end request from the request reception unit 25, the distribution unit 28 ends the distribution of the position image, the image capture data 903, or the compressed image distribution data 905 being distributed.

Next, the details of the client terminal 50 will be described.
The client terminal 50 includes a control device such as a CPU, a storage device such as a ROM or RAM (Random Access Memory), an external storage device such as an HDD or a CD drive device, a display device such as a display device, a keyboard, a mouse, or the like. It has the hardware configuration of a normal computer equipped with the input device of. Alternatively, the client terminal 50 may be a smartphone, tablet terminal, or the like having the same hardware configuration as the in-vehicle device 10.

FIG. 14 is a block diagram showing an example of the functional configuration of the client terminal 50 according to the first embodiment. As shown in FIG. 14, the client terminal 50 includes a communication unit 51, a display control unit 52, and a reception unit 53.

The communication unit 51 receives the image distribution from the image distribution server 20. Specifically, the communication unit 51 receives the screen layout definition information and the position image, the imaging data 903, or the compressed imaging data 905 from the image distribution server 20.

When the communication unit 51 receives the image distribution from the image distribution server 20, the communication unit 51 sends the distributed screen layout definition information and the position image, the imaging data 903 or the compressed imaging data 905 to the display control unit 52.

Further, when the reception unit 53 receives the request from the user, the communication unit 51 acquires the request from the user received by the reception unit 53, the user ID of the user, a desired time, and the like, and causes the image distribution server 20 to obtain the request. Send.

The display control unit 52 displays the image distributed from the image distribution server 20 on the display 508. Since the image distribution server 20 transmits the screen layout definition information and the position image, the imaging data 903 or the compressed imaging data 905, the display control unit 52 interprets the screen layout definition information to form the display screen. As shown in the screen image shown in FIG. 11, a screen including a position image reproduction area 650, an imaging data reproduction area 660, a seek bar 670, a selection screen display button 653, and a search button 680 is displayed on the display 508. Will be done.

The reception unit 53 accepts operations for making various requests made by the user to the client terminal 50. For example, the reception unit 53 receives requests such as a user's position display request, imaging data display request, pause request, rewind request, fast forward request, time selection screen display request, display target time selection, and the like.

For example, when the user accesses a predetermined website from a predetermined Web browser and logs in, the reception unit 53 accepts the operation as a position display request. Further, a position display request button is provided on the initial search screen or the like, and when the user selects and clicks the button with the mouse, the reception unit 53 accepts the operation as a position display request. You may adopt it.

When the user makes a position display request, a configuration may be adopted in which a desired time can be input or selected on the screen. Further, when the user makes a position display request without inputting or selecting the time, the reception unit 53 shall accept the position display request with the current time specified. When the reception unit 53 receives the position display request, the reception unit 53 sends the position display request, the user ID of the currently logged-in user, and the user's desired time or current time to the communication unit 51.

When the user selects one of the icons 651 on the position image with the mouse and double-clicks the icon 651, the reception unit 53 requests the imaging data display by designating the vehicle ID of the vehicle 150 corresponding to the icon 651. Accept. Further, the reception unit 53 accepts the time of the image being played at the time when the user performs the operation as the user's desired time. When the reception unit 53 receives the imaging data display request, the reception unit 53 sends the imaging data display request, the user's desired time, and the vehicle ID specified by the user to the communication unit 51.

Further, the reception unit 53 receives a pause request when the user selects and clicks the pause button 672 on the position image with the mouse. When the reception unit 53 receives the suspension request, the reception unit 53 sends the suspension request to the communication unit 51.

Further, the reception unit 53 receives a rewind request or a fast forward request when the user selects the pointer 671 of the seek bar 670 on the position image with the mouse and moves the pointer 671 to the left or right. When the reception unit 53 receives the rewind request or the fast-forward request, the reception unit 53 sends the rewind request or the fast-forward request and an arbitrary time specified by the pointer 671 to the communication unit 51. When a rewind request or a fast-forward request is received during distribution of the imaging data 903 or the compressed imaging data 905, the reception unit 53 receives the imaging data currently being distributed in addition to an arbitrary time specified by the user with the pointer 671. The vehicle ID of the 903 or the compressed image data 905 is transmitted to the communication unit 51.

Further, the reception unit 53 receives a display request for the time selection screen when the user selects and clicks the selection screen display button 653 on the position image with the mouse. When the reception unit 53 receives the display request of the time selection screen, the reception unit 53 sends the display request of the time selection screen to the communication unit 51.

Then, the reception unit 53 accepts the selection of the display target time when the user performs an operation such as selecting and clicking one of the options displayed on the time selection screen with the mouse. When the reception unit 53 accepts the selection of the display target time, the reception unit 53 sends the time selected by the user to the communication unit 51.

Further, the reception unit 53 receives an imaging data distribution end request when the user performs an operation such as selecting and clicking the close button 681 of the imaging data reproduction area 660 with a mouse or the like. When the reception unit 53 receives the image pickup data distribution end request, the reception unit 53 sends the image capture data distribution end request to the communication unit 51.

Further, the reception unit 53 receives an image distribution end request when the user performs an operation such as closing the screen of the Web browser. Alternatively, a configuration may be adopted in which a logout button (not shown) or the like is displayed on the screen. When the reception unit 53 receives the image distribution end request, the reception unit 53 sends the image distribution end request to the communication unit 51.

When the client terminal 50 is provided with a touch panel, the reception unit 53 may adopt a configuration in which the reception unit 53 accepts an operation in which the user touches the touch panel with a finger or the like instead of clicking.

Next, the imaging process by the in-vehicle device 10 of the present embodiment configured as described above will be described.
FIG. 15 is a flowchart showing an example of the flow of the imaging process according to the in-vehicle device 10 of the present embodiment. The processing of the flowchart shown in FIG. 15 starts when, for example, the in-vehicle device 10 starts the application for the imaging process.

The imaging device 101 of the in-vehicle device 10 images the surroundings of the vehicle 150 outside the vehicle (S1). The image pickup data acquisition unit 11 acquires the image pickup data captured by the image pickup apparatus 101. The imaging data acquisition unit 11 sends the acquired imaging data to the imaging data conversion unit 12.

The time information acquisition unit 13 acquires time information, which is the time when the image pickup device 101 has captured the image pickup data, from the timekeeping circuit 105 (S2). The time information acquisition unit 13 sends the acquired time information to the imaging data conversion unit 12 and the position information acquisition unit 14.

In order to efficiently transmit the captured data to the image distribution server 20, the format of the captured data is converted (S3). The image pickup data conversion unit 12 associates the image pickup data converted for transmission with the time information and transmits the time information to the transmission unit 15.

The transmission unit 15 associates the imaged data acquired from the image pickup data conversion unit 12 and converted for transmission with the time information, and transmits the time information to the image distribution server 20 (S4).

The position information acquisition unit 14 acquires position information from the GPS receiving unit 106 (S5). The position information acquisition unit 14 transmits the position information and the time information in association with each other to the transmission unit 15.

The transmission unit 15 associates the position information acquired from the position information acquisition unit 14 with the time information and transmits the time information to the image distribution server 20 (S6).

When the imaging device 101 does not finish imaging (S7 “No”), the process returns to S2, and the time information acquisition unit 13 acquires time information, which is the time when the imaging device 101 imaged the imaging data, from the timekeeping circuit 105. To do. While the imaging device 101 continues imaging, the vehicle-mounted device 10 repeats the processes of S2 to S6.

When the imaging device 101 ends imaging (S7 “Yes”), the imaging process of the flowchart ends. The case where the image pickup apparatus 101 ends the imaging is, for example, the case where the application for the imaging process is terminated in the in-vehicle device 10 or the case where the power supply of the in-vehicle device 10 is turned off.

Next, a process in which the image distribution server 20 receives the image pickup data, the position information, and the time information transmitted by the in-vehicle device 10 and performs conversion and storage will be described.
FIG. 16 is a flowchart showing an example of a processing flow from reception to storage of data applied to the image distribution server 20 of the present embodiment.

The receiving unit 21 receives the imaged data converted for transmission to the image distribution server 20 from the vehicle-mounted device 10 and the time information associated with the imaged data converted for the transmission (S10). The receiving unit 21 includes image data converted for transmission to the received image distribution server 20, time information associated with the imaged data converted for the transmission, and information for identifying the in-vehicle device 10 of the transmission source. Is sent to the imaging data conversion unit 23.

The imaging data conversion unit 23 converts the imaging data converted for transmission to the image distribution server 20 into imaging data 903 in a format for streaming distribution, for example, a format such as HLS (S11).

The image pickup data conversion unit 23 stores the converted image pickup data 903 in the HDD 204. Further, the imaging data conversion unit 23 associates the time information with the vehicle ID acquired from the vehicle ID DB 901 and the file name of the imaging data 903 converted into the format for streaming distribution, and stores the time information in the attribute DB 904 (S12). ..

The receiving unit 21 receives the position information and the time information associated with the position information from the vehicle-mounted device 10 (S13). The receiving unit 21 transmits the received position information, the time information associated with the position information, and the information for identifying the in-vehicle device 10 of the transmission source to the position information link unit 22.

The position information link unit 22 stores the position information and the time information associated with the position information in the position information DB 902 in association with the vehicle ID acquired from the vehicle ID DB 901 (S14).

When the reception of the imaging data, the position information, and the time information from the in-vehicle device 10 continues (S15 “No”), the process returns to S10, and the receiving unit 21 is for transmitting from the in-vehicle device 10 to the image distribution server 20. The image data converted to the above and the time information associated with the image data converted for the transmission are received.

When the reception of the imaging data, the position information, and the time information from the in-vehicle device 10 is completed (S15 “Yes”), the processing of the flowchart is completed.

Next, the compression processing of the imaging data 903 by the image distribution server 20 in the present embodiment will be described.
FIG. 17 is a flowchart showing an example of the flow of compression processing of the image pickup data 903 applied to the image distribution server 20 of the present embodiment.

The compression unit 24 compares the time information stored in the item "time" of the attribute DB 904 with the current time, and whether there is imaging data 903 in which a predetermined time has passed since the imaging device 101 of the vehicle-mounted device 10 captured the image. Search for whether or not (S20). The predetermined time is 3 minutes in this embodiment. When there is no image pickup data 903 3 minutes after the image pickup (S20 “No”), the compression unit 24 repeats the comparison between the time information stored in the item “time” of the attribute DB 904 and the current time.

When there is imaging data 903 3 minutes after imaging (S20 “Yes”), the compression unit 24 compresses the imaging data 903 into a file format such as MP4 to generate compressed imaging data 905 (S21).

The compression unit 24 stores the generated compressed imaging data 905 in the HDD 204. Further, the compression unit 24 associates the time associated with the imaging data 903 before compression and the vehicle ID with the file name of the compressed imaging data 905 obtained by compressing the imaging data 903, and stores the image data 903 in the compressed data attribute DB 906. (S22). The compression unit 24 deletes the compressed image data 903 from the HDD 204. Further, the compression unit 24 deletes the record of the attribute DB 904 corresponding to the imaging data 903 for which the compression is completed.

The compression unit 24 searches the attribute DB 904, and if there is imaging data 3 minutes after imaging (S23 “Yes”), repeats the processes S21 to S22. If there is no imaging data 3 minutes after imaging (S23 “No”), the processing of the flowchart ends.

Next, the image distribution process by the image distribution server 20 in the present embodiment will be described.
FIG. 18 is a sequence diagram showing an example of the flow of image distribution processing according to the present embodiment.

The reception unit 53 of the client terminal 50 receives the user's position display request. At this time, it is assumed that the user does not input or select the time, and the reception unit 53 accepts the current time as a designated position display request. The reception unit 53 sends the position display request, the user ID of the currently logged-in user, and the current time to the communication unit 51. The communication unit 51 transmits the location display request, the current time, and the user ID of the currently logged-in user to the image distribution server 20 (S30).

The request receiving unit 25 of the image distribution server 20 receives a position display request, a current time, and a user ID of the currently logged-in user from the client terminal 50. The request reception unit 25 searches the authentication DB 907 for the authority of the user with the user ID, and authenticates the user. Then, the request reception unit 25 searches the disclosure range DB 908 for the vehicle ID included in the disclosure range by the user of the user ID, and confirms the vehicle ID to be disclosed to the user (S31). The request reception unit 25 sends the searched vehicle ID and the current time to the calculation unit 26 and the distribution unit 28.

The calculation unit 26 searches the position information DB 902 for the position of the vehicle-mounted device 10 at the current time and the position of the vehicle-mounted device 10 immediately before the current time, which is associated with the vehicle ID acquired from the request receiving unit 25. Further, the distribution unit 28 searches the position information DB 902 for the position of the vehicle-mounted device 10 at the current time and the position of the vehicle-mounted device 10 immediately before the current time, which is associated with the vehicle ID acquired from the request receiving unit 25. (S32).

Then, the calculation unit 26 specifies the traveling direction of the vehicle 150 corresponding to the vehicle ID acquired from the request reception unit 25 from the change in the position of the vehicle-mounted device 10 from immediately before the current time to the current time. Further, the calculation unit 26 calculates the speed of the vehicle 150 from the moving distance of the vehicle-mounted device 10 from immediately before the current time to the current time and the time from immediately before the current time to the current time (S33). The calculation unit 26 sends the calculated traveling direction and speed of the vehicle 150 to the distribution unit 28 in association with the vehicle ID.

The distribution unit 28 maps the map data 900 and the position information of each in-vehicle device 10 searched from the position information DB 902. Then, the distribution unit 28 generates a position image for displaying the icon 651 indicating the position of the in-vehicle device 10 at the current time on the map data 900 (S34). In addition, the distribution unit 28 acquires the traveling direction and speed of the vehicle 150 associated with the vehicle ID from the calculation unit 26. The distribution unit 28 generates screen layout definition information by setting the direction of the icon 651 indicating the position of the vehicle-mounted device 10 on the position image to be the same as the traveling direction of the vehicle 150. Further, the distribution unit 28 changes the definition of the color of the icon 651 indicating the position of the vehicle-mounted device 10 on the position image in the screen layout definition information according to the speed of the vehicle 150.

The distribution unit 28 distributes the screen layout definition information and the position image to the client terminal 50 via the network (S35). The communication unit 51 of the client terminal 50 receives the screen layout definition information and the position image from the image distribution server 20. The communication unit 51 sends the distributed screen layout definition information and the position image to the display control unit 52.

The display control unit 52 interprets the screen layout definition information distributed from the image distribution server 20 to generate a display screen, and displays the position image on the display 508 (S36).

Since the position image in the present embodiment is generated from the position information corresponding to the time, it changes with the passage of time. Therefore, it is assumed that the processes of S32 to S36 are repeated even after the position image of S36 of FIG. 18 is displayed. In the second and subsequent location information search processes, the time following the time specified in the previous location display request is set as the delivery target time. For example, if the current time at the time of processing S30 is "17:00:03" and the position information DB 902 saves the position information every 2 seconds, the second and subsequent search processes for the position information may be performed. A configuration may be adopted in which "17:00:05" is set as the time of the next distribution target. The time is an example, and may change depending on the frequency of acquisition of the position information of the position information acquisition unit 14 of the in-vehicle device 10.

When the user selects and clicks the icon 651 indicating the position of the vehicle 150 on the position image with the mouse, the reception unit 53 specifies the vehicle ID of the vehicle 150 corresponding to the icon 651. Accepts display requests. Further, the reception unit 53 accepts the time of the image being played at the time when the user performs the operation as the user's desired time. When the reception unit 53 receives the imaging data display request, the reception unit 53 sends the imaging data display request, the user's desired time, and the vehicle ID specified by the user to the communication unit 51. The communication unit 51 sends an image data display request, a user's desired time, and a vehicle ID specified by the user to the image distribution server 20 (S37).

The request receiving unit 25 of the image distribution server 20 receives an imaging data display request, a user's desired time, and a vehicle ID specified by the user from the client terminal 50. The image distribution server 20 searches for the imaged data 903 to be distributed in response to the imaged data display request (S38).

The imaging data search process of S38 will be specifically described.
FIG. 19 is a flowchart showing an example of the flow of the imaging data search process according to the present embodiment.

The determination unit 27 acquires the user's desired time from the request reception unit 25. The determination unit 27 determines whether the time to be distributed is a past time within 3 minutes from the current time or a past time before 3 minutes, and transmits the determination result to the distribution unit 28.

When the determination unit 27 determines that the user's desired time, which is the time to be distributed, is the current time or a past time within 3 minutes from the current time (S381 “Yes”), the distribution unit 28 requests. The file name of the imaging data is searched from the attribute DB 904 using the vehicle ID acquired from the reception unit 25 and the user's desired time as search conditions (S382). The distribution unit 28 identifies the imaged data 903 to be distributed from the file name of the imaged data of the search result (S383).

Further, when the determination unit 27 determines that the user's desired time is a time in the past 3 minutes before the current time (S381 “No”), the distribution unit 28 has acquired the request reception unit 25. The file name of the compressed imaging data is searched from the compressed data attribute DB906 using the vehicle ID and the user's desired time as search conditions (S384). The distribution unit 28 identifies the compressed image data 905 to be distributed from the file name of the compressed image data of the search result (S385). Here, since the current time is specified, the distribution unit 28 shall specify the imaging data 903 to be distributed.

Here, the processing of the flowchart is completed, and the process returns to the processing of the sequence diagram of FIG.
The distribution unit 28 reads the specified image data 903 to be distributed from the HDD 204 and distributes it to the client terminal 50 (S39).

The communication unit 51 of the client terminal 50 receives the screen layout definition information and the imaging data 903 from the image distribution server 20. The communication unit 51 sends the distributed screen layout definition information and the imaging data 903 to the display control unit 52.

The display control unit 52 interprets the screen layout definition information distributed from the image distribution server 20 to generate a display screen, and displays the imaging data 903 on the display 508 (S40).

Since the imaging data 903 and the compressed imaging data 905 in the present embodiment are moving images, they are displayed and reproduced on the display 508. Further, it is assumed that the processes of S38 to S40 are repeated until the distribution of the imaging data 903 or the compressed imaging data 905 is completed, and the imaging data 903 or the compressed imaging data 905 continues to be reproduced with the passage of time. In the second and subsequent searches of the captured data, the time following the time set as the search condition in the previous process is set as the time to be delivered. For example, when the current time at the time of the previous processing of S38 is "17:00:10" and the time length of the imaging data 903 or the compressed imaging data 905 delivered in the previous processing of S39 is 10 seconds. In the second and subsequent imaging data search processes, a configuration may be adopted in which "17:00:20" is set as the time of the next distribution target. The time is an example and is changed depending on the length of time per file of the imaging data 903 or the compressed imaging data 905.

Next, various request processing from the client terminal 50 to the image distribution server 20 in the present embodiment will be described.
FIG. 20 is a sequence diagram showing an example of the flow of various request processing according to the present embodiment. As a premise of the processing of FIG. 20, it is assumed that the position image and the captured data 903 are being distributed from the image distribution server 20 to the client terminal 50.

The reception unit 53 of the client terminal 50 receives a pause request when the user selects and clicks the pause button 672 on the position image with the mouse. When the reception unit 53 receives the suspension request, the reception unit 53 sends the suspension request to the communication unit 51. The communication unit 51 transmits a pause request to the image distribution server 20 (S50).

The request receiving unit 25 of the image distribution server 20 receives a pause request from the client terminal 50. The request receiving unit 25 sends an instruction to suspend the position image and the captured data 903 to the distribution unit 28. The distribution unit 28 stops the position image and the captured data 903 while displaying the state at the time when the pause request is received (S51).

Further, the reception unit 53 receives a rewind request when the user selects the pointer 671 of the seek bar 670 on the position moving image with the mouse and moves it to the left. When the reception unit 53 receives the rewind request, the reception unit 53 sends the rewind request, an arbitrary time in the past specified by the user with the pointer 671, and the vehicle ID of the image data 903 currently being distributed to the communication unit 51. To do. The communication unit 51 transmits the rewind request, an arbitrary time in the past specified by the user with the pointer 671, and the vehicle ID of the image data 903 currently being distributed to the image distribution server 20 (S52).

The request receiving unit 25 of the image distribution server 20 receives a rewind request from the client terminal 50, an arbitrary time in the past specified by the user with the pointer 671, and a vehicle ID of the image data 903 currently being distributed. The request receiving unit 25 sends out to the calculation unit 26 and the distribution unit 28 an arbitrary time in the past specified by the user and a vehicle ID including the user in the disclosure range. The request receiving unit 25 further transmits the vehicle ID of the imaging data 903 being distributed at an arbitrary time in the past specified by the user to the distribution unit 28. Further, the request receiving unit 25 sends an arbitrary time in the past designated by the user to the determination unit 27.

The calculation unit 26 acquires a designated past arbitrary time from the request reception unit 25. The calculation unit 26 searches the location information DB 902, searches the location information DB 902, and the user who is logged in to the client terminal 50 currently being distributed has a vehicle ID included in the disclosure target and a designated arbitrary time in the past. Acquires the position information associated with. In addition, the calculation unit 26 converts the vehicle ID included in the disclosure target by the user logged in to the client terminal 50 currently being distributed and the position information associated with the time immediately preceding the designated arbitrary time in the past. get. Further, the distribution unit 28 searches the location information DB 902, and the user who is logged in to the client terminal 50 currently being distributed is associated with the vehicle ID included in the disclosure target at a designated arbitrary time in the past. Acquire position information (S53).

The calculation unit 26 is a user at a designated past arbitrary time from the position of the vehicle-mounted device 10 at a designated past arbitrary time and the position of the vehicle-mounted device 10 immediately before the designated past arbitrary time. Specify the traveling direction of the vehicle 150 having the vehicle ID included in the disclosure target, and calculate the speed (S54).

The distribution unit 28 acquires the traveling direction and speed of the vehicle 150 at an arbitrary time in the past designated by the calculation unit 26. The distribution unit 28 maps the icon 651 indicating the position of the vehicle 150 at a designated arbitrary time in the past with the map data 900 to generate a position image (S55). In addition, the distribution unit 28 generates screen layout definition information in which the direction and color of the icon 651 on the position image are changed according to the traveling direction and speed of the vehicle 150.

Further, the determination unit 27 determines whether the designated arbitrary time in the past is a past time within 3 minutes from the current time or a past time before 3 minutes, and transmits the determination result to the distribution unit 28. Send out. The distribution unit 28 searches for either the attribute DB 904 or the compressed data attribute DB 906 according to the determination of the determination unit 27, and identifies the image capture data 903 or the compressed image data 905 to be distributed (S56). The details of the process of S56 are the same as the process described with reference to FIG. Here, it is assumed that the specified past arbitrary time is a past time within 3 minutes from the current time.

The distribution unit 28 distributes the position image and the captured data 903 at a designated arbitrary time in the past and the screen layout definition information (S57). The communication unit 51 of the client terminal 50 receives the screen layout definition information, the position image, and the imaging data 903 from the image distribution server 20. The communication unit 51 sends the distributed screen layout definition information, the position image, and the imaging data 903 to the display control unit 52.

The display control unit 52 interprets the screen layout definition information distributed from the image distribution server 20 to generate a display screen, and displays the position image and the imaging data 903 at a specified past arbitrary time on the display 508. (S58).

Further, the reception unit 53 receives a display request for the time selection screen when the user selects and clicks the selection screen display button 653 on the position moving image with the mouse. When the reception unit 53 receives the display request of the time selection screen, the reception unit 53 sends the display request of the time selection screen to the communication unit 51. The communication unit 51 transmits a display request for the time selection screen to the image distribution server 20 (S59).

The request reception unit 25 of the image distribution server 20 sends an instruction to display the time selection screen to the distribution unit 28. The distribution unit 28 distributes the screen layout definition information displaying the time selection screen and the past time options that can be selected by the user to the client terminal 50 (S60).

The communication unit 51 of the client terminal 50 receives the screen layout definition information displaying the time selection screen from the image distribution server 20 and the past time options that can be selected by the user. The communication unit 51 sends to the display control unit 52 the screen layout definition information displaying the delivered time selection screen 654 and the past time options that can be selected by the user. The display control unit 52 interprets the screen layout definition information distributed from the image distribution server 20 and displays the time selection screen 654 on the display 508 (S61).

The reception unit 53 accepts the selection of the display target time when the user selects and clicks any of the options displayed on the time selection screen 654 with the mouse. When the reception unit 53 accepts the selection of the display target time, the reception unit 53 sends the time selected by the user to the communication unit 51. The communication unit 51 transmits the time selected by the user to the image distribution server 20 (S62).

The request reception unit 25 of the image distribution server 20 transmits the time selected by the user and the vehicle ID including the user in the disclosure range to the calculation unit 26 and the distribution unit 28. The calculation unit 26 acquires the selected time from the request reception unit 25. The calculation unit 26 searches the position information DB 902, and the user logged in to the client terminal 50 currently being distributed acquires the vehicle ID included in the disclosure target and the position information associated with the selected time. In addition, the calculation unit 26 acquires the vehicle ID included in the disclosure target by the user logged in to the client terminal 50 currently being distributed, and the position information associated with the time immediately before the selected time. In addition, the distribution unit 28 searches the location information DB 902, and the user logged in to the client terminal 50 currently being distributed acquires the vehicle ID included in the disclosure target and the location information associated with the selected time. (S63).

From the position of the vehicle-mounted device 10 at the selected time and the position of the vehicle-mounted device 10 immediately before the selected time, the calculation unit 26 of the vehicle 150 having the vehicle ID included in the disclosure target by the user at the selected time. The traveling direction is specified and the speed is calculated (S64).

Further, the distribution unit 28 acquires the traveling direction and speed of the vehicle 150 at the selected time from the calculation unit 26. The distribution unit 28 maps the icon 651 indicating the position of the vehicle 150 at the selected time with the map data 900 to generate a position image (S65). In addition, the distribution unit 28 generates screen layout definition information in which the direction and color of the icon 651 on the position image are changed according to the traveling direction and speed of the vehicle 150.

Further, the determination unit 27 determines whether the selected time is a past time within 3 minutes from the current time or a past time before 3 minutes, and sends the determination result to the distribution unit 28. The distribution unit 28 searches for either the attribute DB 904 or the compressed data attribute DB 906 according to the determination of the determination unit 27, and identifies the image capture data 903 or the compressed image data 905 to be distributed (S66). The details of the process of S66 are the same as the process described with reference to FIG. Here, it is assumed that the selected time is a time in the past 3 minutes before the current time.

In the present embodiment, the time selection screen 654 is used to specify a time that is further past than the range that can be specified by the operation of the seek bar 670. Therefore, the processing of the determination unit 27 is omitted, and the distribution unit 28 , A configuration may be adopted in which only the compressed data attribute DB906 is searched.

The distribution unit 28 distributes the position image and the compressed image data 905 at the selected time, and the screen layout definition information (S67). The distribution unit 28 performs decompression processing when distributing the compressed image data 905 to the client terminal 50. Alternatively, a configuration may be adopted in which the display control unit 52 of the client terminal 50 expands the compressed imaging data 905.

The communication unit 51 of the client terminal 50 receives the screen layout definition information, the position image, and the compressed image data 905 from the image distribution server 20. The communication unit 51 sends the distributed screen layout definition information, the position image, and the decompressed compressed image data 905 to the display control unit 52.

The display control unit 52 interprets the screen layout definition information distributed from the image distribution server 20 to generate a display screen, and displays the position image at the selected time and the decompressed compressed image data 905 on the display 508 (. S68).

Further, the reception unit 53 receives an imaging data distribution end request when the user performs an operation such as selecting and clicking the close button 681 of the imaging data reproduction area 660 with a mouse or the like. The reception unit 53 sends an imaging data distribution end request to the communication unit 51. The communication unit 51 transmits an image distribution end request to the image distribution server 20 (S69). The request reception unit 25 of the image distribution server 20 sends an instruction to end the image distribution to the distribution unit 28. Since it is the compressed imaging data 905 that is being distributed at this point, the distribution unit 28 ends the distribution of the compressed imaging data 905 (S70).

Further, the reception unit 53 receives an image distribution end request when the user performs an operation such as closing the screen of the Web browser. The reception unit 53 sends an image distribution end request to the communication unit 51. The communication unit 51 transmits an image distribution end request to the image distribution server 20 (S71). The request reception unit 25 of the image distribution server 20 sends an instruction to end image distribution to the distribution unit 28. Since it is the position image that is being distributed at this point, the distribution unit 28 ends the distribution of the position image (S72). When the distribution of the position image is completed, the distribution of the screen layout definition information including the information such as the seek bar 670 is also completed.

As described above, according to the image distribution server 20 of the present embodiment, the compression unit 24 compresses the image pickup data 903 after a predetermined time has passed since the image pickup device 101 of the in-vehicle device 10 has taken an image, and compresses the compressed image data 905. Since it is generated and stored, it is possible to avoid an increase in the storage capacity of the image distribution server 20 even if a large amount of past imaging data is stored. On the other hand, in the image distribution server 20 of the present embodiment, the imaging data 903 is stored without being compressed until a predetermined time elapses from the imaging, and the user's desired time is a past time within a predetermined time from the current time. If this is the case, the distribution unit 28 distributes the imaged data 903 before compression to the client terminal 50. Therefore, when the user desires the imaging data 903 at a past time within a predetermined time from the current time, it is not necessary to expand the compressed imaging data 905, so that the imaging data 903 is reproduced in real time on the client terminal 50. As a result, the user can grasp the traffic situation such as when a traffic jam occurs in real time. On the other hand, the image distribution server 20 of the present embodiment compresses the image pickup data 903 that has passed a predetermined time from the image capture to reduce the storage capacity of the image distribution server 20 and at a past time within a predetermined time from the current time. From the imaged data 903, the user can grasp the traffic situation in real time.

Further, according to the image distribution server 20 of the present embodiment, the user's desired time is received from the client terminal 50, the imaging data captured by the imaging device 101 is received from the in-vehicle device 10 and converted into a format capable of streaming distribution. In order to deliver the imaging data 903 or the compressed imaging data 905 to the client terminal 50, the user not only inquires the imaging data 903 imaged by the imaging device 101 of the in-vehicle device 10 in real time, but also images the imaging data 903 at a desired past time. Data 903 or compressed imaging data 905 can be queried.

Further, as described above, in the image distribution server 20 of the present embodiment, the compression unit 24 compresses the imaging data 903 that has passed a predetermined time from the imaging, while the imaging data 903 until the predetermined time has elapsed from the imaging. Do not compress. Therefore, according to the present embodiment, it is possible to quickly reproduce the past imaging data 903 within a predetermined time from the current time, which is frequently inquired by the user, and the disk capacity and network of the image distribution server 20. The load can be reduced.

Therefore, according to the image distribution server 20 of the present embodiment, while reducing the storage capacity of the image distribution server 20 and the network load, the desired past imaging data can be quickly reproduced to improve user convenience. can do.

Further, according to the image distribution server 20 of the present embodiment, it is possible to distribute the imaging data 903 or the compressed imaging data 905 at a time desired by the user, not only when a specific event such as traffic congestion occurs. The imaged data 903 or the compressed imaged data 905 can be provided to the user without limitation.

Further, since the determination unit 27 determines which of the imaging data 903 and the compressed imaging data 905 is to be delivered to the client terminal 50, when the user requests the imaging data distribution, either the imaging data 903 or the compressed imaging data 905 is delivered. You can make a request without being aware of whether to request the delivery of. Further, since the determination unit 27 makes a determination, it is limited whether the data to be searched by the distribution unit 28 is the imaging data 903 or the compressed imaging data 905. Therefore, the processing of the image distribution server 20 by the search is performed. The load can be reduced.

Further, according to the image distribution server 20 of the present embodiment, since the image pickup data captured by the image pickup device 101 of the in-vehicle device 10 mounted on the vehicle 150 is received, the fixed point camera fixed to the side of the road or the like is provided. Imaging data can be obtained even in places where imaging is difficult, and blind spots of fixed-point cameras can be supplemented.

Further, according to the image distribution server 20 of the present embodiment, the position information indicating the position of the in-vehicle device 10 at each time is received, and the icon 651 indicating the position of the in-vehicle device 10 at the user's desired time is displayed on the map data 900. In order to deliver the position image to be displayed on the user, the user can inquire about the position of the in-vehicle device 10 at a desired time. Therefore, the user can easily search the map data 900 for the vehicle 150 traveling in the vicinity of the place to be inquired at a desired time from the position image.

Further, according to the distribution unit 28 of the image distribution server 20 of the present embodiment, the imaging data 903 or the compressed imaging data 905 and the position image are reproducibly distributed on the same screen, so that the user can reproduce the imaging data 903. Alternatively, when inquiring the compressed imaging data 905, the position of the in-vehicle device 10 at the time when the imaging data 903 or the compressed imaging data 905 is imaged can be easily confirmed from the position image.

Further, according to the distribution unit 28 of the image distribution server 20 of the present embodiment, the imaging data 903 or the compressed imaging data 905 and the seek bar 670 that accepts the rewinding operation from the user with respect to the position image are captured data 903. Alternatively, in order to reproducibly distribute the compressed image data 905 and the image on the same screen as the position image, the user operates the seek bar 670 while checking the position image and the image of the image data 903 or the compressed image data 905 in the past. It is easy to specify any time of.

For example, if the user overlooks an image during distribution of the imaging data 903 at the current time, the past imaging data 903 can be quickly inquired by operating the seek bar 670 on the same screen.

Further, at this time, even if the arbitrary past time specified by the user is a time earlier than the predetermined time, it is determined whether to deliver the imaging data 903 or the compressed imaging data 905 to the client terminal 50. Therefore, the user can perform the rewinding operation without being aware of the boundary between the imaging data 903 and the compressed imaging data 905.

Further, according to the image distribution server 20 of the present embodiment, the imaging data conversion unit 23 converts the imaging data received from the in-vehicle device 10 by the receiving unit 21 into a format capable of streaming distribution, so that the image distribution server 20 makes a client. The network load when delivering the image pickup data 903 to the terminal 50 is reduced, and the image data can be delivered quickly.

Further, according to the image distribution server 20 of the present embodiment, the distribution unit 28 indicates the position of the in-vehicle device 10 on the position image according to the traveling direction of the vehicle 150 specified by the calculation unit 26 from the position information. Since the orientation is changed, the user can easily grasp the traveling direction of the vehicle 150. Therefore, when the position image and the imaging data 903 or the compressed imaging data 905 are displayed on the same screen, the user can use the imaging data 903 or the compressed imaging data 905 in which direction the imaging device 101 of the in-vehicle device 10 has. It is possible to grasp whether the image is taken.

Further, according to the image distribution server 20 of the present embodiment, the distribution unit 28 changes the color of the icon 651 indicating the position of the in-vehicle device 10 according to the speed of the vehicle 150, so that the user can change the color of the icon 651 indicating the position of the vehicle 150 from the position image. You can know the speed. For example, when the speed of the in-vehicle device 10 is slow, the possibility that the road on which the vehicle 150 equipped with the in-vehicle device 10 travels is congested can be read from the position image.

According to the image distribution server 20 of the present embodiment, the calculation unit 26 calculates the speed of the vehicle 150 from the position information, so that even if the in-vehicle device 10 does not have a device for measuring the speed, the speed of the vehicle 150 is adjusted. You can change the color of the icon 651.

Further, according to the image distribution server 20 of the present embodiment, the user ID of the user who has logged in to the client terminal 50 is received from the client terminal 50, and the image pickup data 903 or the compressed image pickup data 905 in which the user is included in the disclosure range, And the position image is delivered, and the imaging data 903 or the compressed imaging data 905 and the position image that the user is not included in the disclosure range are not delivered. By restricting the use by the user's authority in this way, it is possible to mutually use the imaged data and the position information imaged and acquired by the in-vehicle device 10 mounted on the vehicle 150 owned by a different company within an appropriate range. it can.

That is, since one user can use the imaged data and the position information imaged and acquired by the plurality of in-vehicle devices 10, the time and place of the monitoring range can be expanded when used by a security company or the like. .. Further, since the positions of the plurality of vehicle-mounted devices 10 that the user has the authority to inquire are displayed on the position image, the positions of the plurality of vehicle-mounted devices 10 can be grasped and information can be centrally managed. ..

In the image distribution system 1 of the present embodiment, the calculation unit 26 of the image distribution server 20 adopts a configuration in which the speed of the vehicle 150 is calculated from the position information, but the in-vehicle device 10 determines the speed of the vehicle 150. A configuration may be adopted in which the image is acquired and transmitted to the image distribution server 20. For example, the in-vehicle device 10 may adopt a configuration in which the speed of the vehicle 150 is acquired from the wheel speed sensor of the vehicle 150. Alternatively, the in-vehicle device 10 may adopt a configuration that detects the acceleration of the vehicle 150. When this configuration is adopted, the process of calculating the speed of the vehicle 150 by the calculation unit 26 can be omitted, and the processing load of the image distribution server 20 can be reduced.

The image distribution server 20 of the present embodiment adopts a configuration in which the image pickup data 903 and the position information are stored in the HDD 204 and then distributed to the client terminal 50, but the present invention is not limited to this. For example, a configuration may be adopted in which the imaged data 903 converted for streaming distribution and the position information are not stored in the HDD 204, but the imaged data 903 and the position image are distributed to the client terminal 50 at any time.

The image distribution server 20 of the present embodiment adopts a configuration in which the user's time is specified at the time of the position display request, but the display target area may be further specified. Further, during the distribution of the position image, the user may specify the display target area by inputting the place name or the like from the search button 680 on the screen.

Further, in the image distribution server 20 of the present embodiment, the vehicle ID is specified by accepting an operation such as clicking the icon 651 on the screen when the image pickup data display request is made, but the vehicle ID is specified on the screen. The vehicle ID may be specified by the user by inputting the vehicle ID from the search button 680 of.

The image pickup device 101 of the vehicle-mounted device 10 of the present embodiment captures a moving image, but the present invention is not limited to this, and a configuration for capturing a still image may be adopted.
Further, the distribution unit 28 of the image distribution server 20 adopts a configuration in which the imaging data 903 of the moving image is distributed as the moving image at the time of streaming distribution, but the present invention is not limited to this, and a still image is generated from the frames constituting the moving image. , A configuration may be adopted in which continuous still images are frame-advanced and distributed to the client terminal 50. Further, the distribution unit 28 of the image distribution server 20 may adopt progressive download that downloads data to the memory of the client terminal 50 at the time of distribution to the client terminal 50.

(Embodiment 2)
In the image distribution system 1 of the first embodiment, the image distribution server 20 has generated screen layout definition information, specified the traveling direction of the vehicle 150, calculated the speed, generated a position image, and the like. In the form, these processes are performed on the client terminal 50 side.

The hardware configuration and functional configuration of the vehicle-mounted device 10 in this embodiment are the same as those in the first embodiment. Further, the hardware configuration of the image distribution server 20 and the client terminal 50 in this embodiment is the same as that in the first embodiment.

The functional configuration of the image distribution server 20 of the present embodiment will be described.
FIG. 21 is a block diagram showing an example of the functional configuration of the image distribution server 20 according to the present embodiment. As shown in FIG. 21, the image distribution server 20 includes a reception unit 21, a position information link unit 22, an imaging data conversion unit 23, a compression unit 24, a request reception unit 1025, a determination unit 27, and a distribution unit. 1028 and.

Further, the HDD 204 stores the vehicle ID DB 901, the position information DB 902, the imaging data 903, the attribute DB 904, the compressed imaging data 905, the compressed data attribute DB 906, the authentication DB 907, and the disclosure range DB 908.

The configuration of the receiving unit 21, the position information link unit 22, the imaging data conversion unit 23, the compression unit 24, and the determination unit 27 is the same as that of the first embodiment described with reference to FIG. Further, each database and data stored in the HDD 204 are the same as those in the first embodiment.

The request receiving unit 1025 makes a request such as a user's position display request, an image data display request, a pause request, a rewind request, a fast forward request, a display target time selection, an image data distribution end request, and an image distribution end request. Accept from 50.

Specifically, when a position display request is received from the client terminal 50, the request reception unit 1025 sets the position display request, the user ID of the user who has logged in to the client terminal 50, and the user's desired time to the client terminal. Accept from 50. The request reception unit 1025 searches the authentication DB 907 for the affiliation of the user with the user ID. Then, the request reception unit 1025 searches the disclosure range DB 908 for the vehicle ID in which the user of the user ID is included in the disclosure range. The request reception unit 1025 sends the searched vehicle ID and the user's desired time to the distribution unit 1028.

When the image data display request is received from the client terminal 50, the request receiving unit 1025 sends the user's desired time and vehicle ID to the distribution unit 1028. Further, the request reception unit 1025 sends the user's desired time to the determination unit 27.

When a pause request is received from the client terminal 50, the request reception unit 1025 sends a position information during distribution, an instruction to suspend the imaged data 903 or the compressed image data 905 to the distribution unit 1028.

When a rewind request or a fast-forward request is received from the client terminal 50, the request reception unit 1025 sends a user-designated past arbitrary time and a vehicle ID including the user in the disclosure range to the distribution unit 1028. .. When a rewind request or a fast-forward request is received during the distribution of the imaging data 903 or the compressed imaging data 905, the request receiving unit 1025 further obtains the vehicle ID of the imaging data 903 or the compressed imaging data 905 being distributed. It is sent to the distribution unit 1028. Further, the request reception unit 1025 sends an arbitrary time in the past designated by the user to the determination unit 27.

Further, in the present embodiment, the time selection screen 654 is displayed on the client terminal 50 side, but the display target time selected by the user on the time selection screen 654 is transmitted from the client terminal 50 to the image distribution server 20. .. When the request reception unit 1025 receives the selection of the display target time, the request reception unit 1025 sends the time selected by the user and the vehicle ID including the user in the disclosure range to the distribution unit 1028. Further, the request reception unit 1025 sends the time selected by the user to the determination unit 27.

When the client terminal 50 receives the imaging data distribution end request, the request receiving unit 1025 sends an instruction to end the imaging data distribution to the distribution unit 1028. When the image distribution end request is received from the client terminal 50, the request reception unit 1025 sends an image distribution end instruction to the distribution unit 1028.

In the present embodiment, since the position image is generated on the client terminal 50 side, the distribution unit 1028 distributes the position information to the client terminal 50 instead of the position image. Further, the distribution unit 1028 distributes the image pickup data 903 or the compressed image pickup data 905 to the client terminal 50 as in the first embodiment.

Specifically, when the request reception unit 1025 receives the position display request, the distribution unit 1028 acquires the vehicle ID to be disclosed and the user's desired time from the request reception unit 1025. The distribution unit 1028 searches the position information DB 902 for the position information of the vehicle-mounted device 10 associated with the vehicle ID to be disclosed and the user's desired time.

Further, the distribution unit 1028 searches the position information DB 902 for the position information of the in-vehicle device 10 at the time immediately before the user's desired time, which is used by the client terminal 50 to calculate the traveling direction and the speed of the vehicle 150. The distribution unit 1028 distributes the position information at the desired time of the searched user and the time immediately before the desired time of the user to the client terminal 50 in association with the vehicle ID and the time.

Similarly, when the request receiving unit 1025 receives the imaging data display request, the rewind request, the fast forward request, and the selection of the display target time, the distribution unit 1028 also receives the position information at the time selected by the user and the time immediately before that. Is delivered to the client terminal 50 in association with the vehicle ID and the time.

When the distribution unit 1028 receives an instruction from the request reception unit 1025 to end the distribution of the imaging data, the distribution unit 1028 ends the distribution of the imaging data 903 or the compressed imaging data 905 being distributed. When the distribution unit 1028 receives an instruction from the request reception unit 1025 to request the end of image distribution, the distribution unit 1028 ends the distribution of the position information being distributed, the imaging data 903, or the compressed imaging data 905.

Next, the functional configuration of the client terminal 50 in this embodiment will be described.
FIG. 22 is a block diagram showing an example of the functional configuration of the client terminal 50 according to the present embodiment. As shown in FIG. 22, the client terminal 50 includes a communication unit 1051, a calculation unit 55, a screen configuration unit 54, a display control unit 1052, and a reception unit 1053. The HDD 504 also stores the map data 900.

The communication unit 1051 receives distribution from the image distribution server 20. Specifically, the communication unit 1051 receives the position information associated with the vehicle ID and the time from the image distribution server 20 and the image pickup data 903 or the compressed image pickup data 905. When the communication unit 1051 receives the distribution from the image distribution server 20, the communication unit 1051 transmits the position information associated with the vehicle ID and the time to the calculation unit 55 and the screen configuration unit 54. Further, the communication unit 1051 sends the distributed image pickup data 903 or compressed image pickup data 905 to the screen configuration unit 54.

Further, when the reception unit 1053 receives the request from the user, the communication unit 1051 acquires the request from the user received by the reception unit 1053, the user ID of the user, a desired time, and the like, and causes the image distribution server 20 to obtain the request. Send.

The calculation unit 55 calculates the traveling direction and speed of the vehicle 150 from the position of the vehicle-mounted device 10 at a specific time and the position of the vehicle-mounted device 10 immediately before the specific time. Specifically, when the specific time is the time selected by the user, the calculation unit 55 receives the vehicle ID, the time selected by the user, and the position information associated with the time immediately before the vehicle ID 1051 from the communication unit 1051. To get.

The calculation unit 55 calculates the traveling direction of the vehicle 150 corresponding to the acquired vehicle ID from the change in the position of the in-vehicle device 10 from immediately before the time selected by the user to the time selected by the user. Further, the calculation unit 55 determines the moving distance of the in-vehicle device 10 from immediately before the time selected by the user to the time selected by the user, and the time from immediately before the time selected by the user to the time selected by the user. From, the speed of the vehicle 150 is calculated. The calculation unit 55 sends the calculated traveling direction and speed of the vehicle 150 to the screen configuration unit 54 in association with the vehicle ID and the time.

The screen configuration unit 54 generates screen layout definition information so that the imaging data 903 or the compressed imaging data 905 acquired from the communication unit 1051 can be reproduced on the same screen as the position image. Specifically, the communication unit 1051 acquires the position information associated with the vehicle ID and time distributed by the image distribution server 20, and the distributed image pickup data 903 or compressed image pickup data 905. The screen configuration unit 54 maps the map data 900 with the vehicle ID and the position information of each in-vehicle device 10 associated with the time. Then, the screen configuration unit 54 generates a position image for displaying the icon 651 indicating the position of the in-vehicle device 10 at the user's desired time on the map data 900.

Further, the screen configuration unit 54 acquires the traveling direction and speed of the vehicle 150 from the calculation unit 55. The screen configuration unit 54 changes the direction of the icon 651 indicating the position of the vehicle-mounted device 10 on the position image according to the traveling direction of the vehicle 150. Further, the screen configuration unit 54 changes the definition of the icon display mode in the screen layout definition information according to the speed of the vehicle 150, so that the display mode of the icon 651 indicating the position of the in-vehicle device 10 on the position image, for example, Change the color.

The screen configuration unit 54 defines a screen layout such as HTML for arranging the position image, the imaging data 903 or the compressed imaging data 905, the seek bar 670, and the like on the screen. The screen configuration unit 54 sends the screen layout definition information, the position image, the imaging data 903 or the compressed imaging data 905 to the display control unit 1052.

Further, when the screen configuration unit 54 receives an instruction to display the time selection screen 654 from the reception unit 1053, the screen configuration unit 54 generates the time selection screen 654. The time selection screen 654 may be the same screen as that of the first embodiment described with reference to FIG. 12, or another display form may be adopted. The screen configuration unit 54 sends the generated time selection screen 654 to the display control unit 1052.

The display control unit 1052 interprets the screen layout definition information acquired from the screen configuration unit 54 to form a display screen, and has a position image reproduction area 650 and an imaging data reproduction area 660 as shown in the screen image shown in FIG. A screen including the seek bar 670, the selection screen display button 653, and the search button 680 is displayed on the display 508. When the display control unit 1052 receives a pause request from the reception unit 1053, the display control unit 1052 stops the position image and the image pickup data 903 or the compressed image pickup data 905 on the screen while displaying the state at the time when the pause request is received. Let me.

The reception unit 1053 receives operations for making various requests made by the user to the client terminal 50. For example, the reception unit 1053 receives requests such as a user's position display request, imaging data display request, pause request, rewind request, fast forward request, time selection screen display request, display target time selection, and the like.

When the reception unit 1053 receives the position display request, the reception unit 1053 sends the position display request, the user ID of the currently logged-in user, and the user's desired time or current time to the communication unit 1051.

When the reception unit 1053 receives the imaging data display request, the reception unit 1053 sends the imaging data display request, the user's desired time, and the vehicle ID specified by the user to the communication unit 1051.

When the reception unit 1053 receives the suspension request, the reception unit 1053 sends the suspension request to the display control unit 1052 and the communication unit 1051. When the reception unit 1053 receives the rewind request or the fast-forward request, the reception unit 1053 sends the rewind request or the fast-forward request and an arbitrary time specified by the pointer 671 to the communication unit 1051. When a rewind request or a fast-forward request is received during distribution of the imaging data 903 or the compressed imaging data 905, the reception unit 1053 receives the imaging data currently being distributed in addition to an arbitrary time specified by the pointer 671. The vehicle ID of the 903 or the compressed image data 905 is transmitted to the communication unit 1051.

When the reception unit 1053 receives the display request of the time selection screen, the reception unit 1053 sends an instruction to display the time selection screen to the screen configuration unit 54. When the reception unit 1053 accepts the selection of the display target time during the display of the time selection screen 654, the reception unit 1053 sends the time selected by the user to the communication unit 1051.

The flow of the imaging process by the in-vehicle device 10 of the present embodiment configured as described above is the same as that of the first embodiment described in the flowchart of FIG. Further, the process of receiving the image pickup data or the like transmitted by the in-vehicle device 10 by the image distribution server 20 and performing conversion and storage is the same as that of the first embodiment described in the flowchart of FIG. Further, the flow of the compression processing of the imaging data 903 by the image distribution server 20 of the present embodiment is the same as that of the first embodiment described in the flowchart of FIG.

Next, the image distribution process by the image distribution server 20 of the present embodiment will be described.
FIG. 23 is a sequence diagram showing an example of the flow of image distribution processing according to the present embodiment. The transmission of the position display request of S100, the user authentication of S101, and the confirmation of the disclosure target are the same as those of S30 to S31 described with reference to FIG.

The distribution unit 1028 searches the position information DB 902 for the position of the vehicle-mounted device 10 at the current time and the position of the vehicle-mounted device 10 immediately before the current time, which is associated with the vehicle ID acquired from the request reception unit 1025. S102).

The distribution unit 1028 distributes the current time and the position information immediately before the current time to the client terminal 50 via the network in association with the vehicle ID and the time (S103). The communication unit 1051 of the client terminal 50 receives the position information associated with the vehicle ID and the time from the image distribution server 20. The communication unit 1051 transmits the position information associated with the vehicle ID and the time to the calculation unit 55 and the screen configuration unit 54.

The calculation unit 55 calculates the traveling direction of the vehicle 150 from the change in the position of the vehicle-mounted device 10 from immediately before the current time to the current time. Further, the calculation unit 55 calculates the speed of the vehicle 150 from the moving distance of the vehicle-mounted device 10 from immediately before the current time to the current time and the time from immediately before the current time to the current time (S104). The calculation unit 55 sends the calculated traveling direction and speed of the vehicle 150 to the screen configuration unit 54 in association with the vehicle ID and the time.

The screen configuration unit 54 maps the map data 900 and the position information of each in-vehicle device 10 acquired from the communication unit 1051. Then, the screen configuration unit 54 generates a position image for displaying the icon 651 indicating the position of the vehicle-mounted device 10 at the current time on the map data 900 (S105). Further, the screen configuration unit 54 acquires the traveling direction and speed of the vehicle 150 associated with the vehicle ID and the time from the calculation unit 55. The screen configuration unit 54 generates screen layout definition information by setting the direction of the icon 651 indicating the position of the vehicle-mounted device 10 on the position image to be the same as the traveling direction of the vehicle 150. Further, the screen configuration unit 54 changes the definition of the color of the icon 651 indicating the position of the vehicle-mounted device 10 on the position image in the screen layout definition information according to the speed of the vehicle 150.

Further, the screen configuration unit 54 defines the screen layout in which the position image, the seek bar 670, etc. are arranged on the screen by HTML or the like. The screen configuration unit 54 sends the screen layout definition information and the position image to the display control unit 1052.

The display control unit 1052 interprets the screen layout definition information acquired from the screen configuration unit 54 to form a display screen, and displays the position image on the display 508 (S106).

When the reception unit 1053 receives the user's imaging data display request, the reception unit 1053 sends the imaging data display request, the user's desired time, and the vehicle ID specified by the user to the communication unit 1051. The communication unit 1051 sends an image data display request, a user's desired time, and a vehicle ID specified by the user to the image distribution server 20 (S107).

The process of searching the imaging data in S108 is the same as the process of S38 described with reference to FIG. Further, the details of the image pickup data search process of S108 are the same as the process of the flowchart of FIG.

The distribution unit 1028 reads the image capture data 903 or the compressed image data 905 of the distribution target specified in the process of S108 from the HDD 204 and distributes it to the client terminal 50 (S109).

The communication unit 1051 of the client terminal 50 receives the image pickup data 903 from the image distribution server 20. The communication unit 1051 sends the distributed image pickup data 903 to the screen configuration unit 54. The screen configuration unit 54 defines a screen layout in which the imaging data 903 or the compressed imaging data 905 is arranged on the screen by HTML or the like. The screen configuration unit 54 sends the screen layout definition information and the imaging data 903 or the compressed imaging data 905 to the display control unit 1052.

The display control unit 1052 interprets the screen layout definition information acquired from the screen configuration unit 54 to form a display screen, and displays the image pickup data 903 or the compressed image pickup data 905 on the display 508 (S110).

Next, various request processes in the present embodiment will be described.
FIG. 24 is a sequence diagram showing an example of the flow of various request processing according to the present embodiment. As a premise of the processing of FIG. 24, it is assumed that the position image and the captured data 903 are displayed on the display 508.

When the reception unit 1053 receives the suspension request, the reception unit 1053 sends the suspension request to the communication unit 1051 and the display control unit 1052. The communication unit 1051 transmits a pause request to the image distribution server 20. The communication unit 1051 transmits a pause request to the image distribution server 20 (S120).

The request reception unit 1025 of the image distribution server 20 receives a pause request from the client terminal 50. The request reception unit 1025 sends a position information and an instruction to suspend the imaging data 903 to the distribution unit 1028. The distribution unit 1028 stops the distribution of the position information and the imaging data 903 (S121). Further, the display control unit 1052 stops the display of the position image and the captured data 903 on the screen while displaying the state at the time when the pause request is received (S122).

When the reception unit 1053 receives the rewind request, the reception unit 1051 transmits the rewind request, an arbitrary time in the past specified by the user with the pointer 671, and the vehicle ID of the image data 903 currently being distributed. Send to. The communication unit 1051 transmits the rewind request, an arbitrary time in the past specified by the user with the pointer 671, and the vehicle ID of the image data 903 currently being distributed to the image distribution server 20 (S123).

The request reception unit 1025 of the image distribution server 20 receives a rewind request from the client terminal 50, an arbitrary time in the past specified by the user with the pointer 671, and a vehicle ID of the image data 903 currently being distributed. The request reception unit 1025 sends out to the distribution unit 1028 an arbitrary time in the past specified by the user and a vehicle ID including the user in the disclosure range. The request reception unit 1025 further transmits the vehicle ID of the imaging data 903 being distributed at an arbitrary time in the past specified by the user to the distribution unit 1028. Further, the request reception unit 1025 sends an arbitrary time in the past designated by the user to the determination unit 27.

The distribution unit 1028 positions the position information of the in-vehicle device 10 at the specified time and the position information of the in-vehicle device 10 immediately before the specified time, which is associated with the vehicle ID acquired from the request reception unit 1025. Search from the information DB 902 (S124).

The determination unit 27 determines whether the specified past arbitrary time is a past time within 3 minutes from the current time or a past time before 3 minutes, and sends the determination result to the distribution unit 1028. .. The distribution unit 1028 searches for either the attribute DB 904 or the compressed data attribute DB 906 according to the determination of the determination unit 27, and identifies the image capture data 903 or the compressed image data 905 to be distributed (S125). The details of the process of S125 are the same as the process described with reference to FIG. Here, it is assumed that the specified past arbitrary time is a past time within 3 minutes from the current time.

The distribution unit 1028 distributes the position information of the vehicle-mounted device 10 at the designated time and the position information of the vehicle-mounted device 10 immediately before the designated time to the client terminal 50 in association with the vehicle ID and the time. Further, the distribution unit 1028 distributes the specified imaging data 903 to the client terminal 50 (S126).

The communication unit 1051 of the client terminal 50 receives the position information associated with the vehicle ID and the time and the image pickup data 903 from the image distribution server 20. The communication unit 1051 transmits the position information associated with the vehicle ID and the time to the calculation unit 55 and the screen configuration unit 54. In addition, the communication unit 1051 sends the distributed imaging data 903 to the screen configuration unit 54.

The calculation unit 55 calculates the traveling direction of the vehicle 150 from the change in the position of the vehicle-mounted device 10 from immediately before the designated time to the designated time. Further, the calculation unit 55 calculates the speed of the vehicle 150 from the moving distance of the in-vehicle device 10 from immediately before the designated time to the designated time and the time from immediately before the designated time to the designated time. (S127). The calculation unit 55 sends the calculated traveling direction and speed of the vehicle 150 to the screen configuration unit 54 in association with the vehicle ID and the time.

The screen configuration unit 54 acquires the traveling direction and speed of the vehicle 150 associated with the vehicle ID and the time from the calculation unit 55. The screen configuration unit 54 maps the icon 651 indicating the position of the vehicle 150 at the designated time with the map data 900 to generate a position image (S128). Further, the screen configuration unit 54 generates screen layout definition information in which the direction and color of the icon 651 on the position image are changed according to the traveling direction and speed of the vehicle 150. The screen configuration unit 54 sends the screen layout definition information, the position image, and the imaging data 903 to the display control unit 1052.

The display control unit 1052 interprets the screen layout definition information acquired from the screen configuration unit 54 to form a display screen, and displays the position image and the captured data 903 at the designated time on the display 508 (S129).

When the reception unit 1053 receives the display request of the time selection screen, the reception unit 1053 sends the display request of the time selection screen to the screen configuration unit 54. When the screen configuration unit 54 receives an instruction to display the time selection screen 654 from the reception unit 1053, the screen configuration unit 54 generates the time selection screen 654. The screen configuration unit 54 sends the generated time selection screen 654 to the display control unit 1052. The display control unit 1052 displays the time selection screen 654 on the display 508 (S130).

When the reception unit 1053 receives the selection of the display target time, the reception unit 1053 sends the time selected by the user to the communication unit 1051. The communication unit 1051 transmits the time selected by the user to the image distribution server 20 (S131).

When the request reception unit 1025 of the image distribution server 20 accepts the selection of the display target time, the request reception unit 1025 sends the time selected by the user and the vehicle ID including the user in the disclosure range to the distribution unit 1028. Further, the request reception unit 1025 sends the time selected by the user to the determination unit 27.

The distribution unit 1028 positions the position information of the vehicle-mounted device 10 at the selected time and the position information of the vehicle-mounted device 10 immediately before the selected time, which is associated with the vehicle ID acquired from the request reception unit 1025. Search from the information DB 902 (S132).

The determination unit 27 determines whether the selected time is a past time within 3 minutes from the current time or a past time before 3 minutes, and sends the determination result to the distribution unit 1028. The distribution unit 1028 searches for either the attribute DB 904 or the compressed data attribute DB 906 according to the determination of the determination unit 27, and identifies the image capture data 903 or the compressed image data 905 to be distributed (S133). The details of the process of S133 are the same as the process described with reference to FIG. Here, it is assumed that the selected time is a time in the past 3 minutes before the current time.

The distribution unit 1028 distributes the position information of the vehicle-mounted device 10 at the selected time and the position information of the vehicle-mounted device 10 immediately before the selected time to the client terminal 50 in association with the vehicle ID and the time. Further, the distribution unit 1028 distributes the specified compressed imaging data 905 to the client terminal 50 (S134).

Similar to S127, the calculation unit 55 calculates the traveling direction and speed of the vehicle 150 at the selected time (S135). Further, the screen configuration unit 54 maps the icon 651 indicating the position of the vehicle 150 at the selected time with the map data 900 to generate a position image (S136). Further, the screen configuration unit 54 generates screen layout definition information in which the direction and color of the icon 651 on the position image are changed according to the traveling direction and speed of the vehicle 150. The screen configuration unit 54 sends the screen layout definition information, the position image, and the compressed imaging data 905 to the display control unit 1052.

The display control unit 1052 interprets the screen layout definition information acquired from the screen configuration unit 54 to generate a display screen, and displays the position image at the selected time and the expanded compressed image data 905 on the display 508 (S137). ).

The process from the request for ending the image distribution of S138 to the end of image distribution in S141 is the same as the processing of S69 to S72 in FIG.

As described above, according to the image distribution system 1 of the present embodiment, the same effect as that of the first embodiment can be obtained, and the image distribution server 20 can perform processing such as image generation on the client terminal 50 side. The processing load can be reduced. Further, by performing processing such as screen generation on the client terminal 50, the amount of data transmitted and received between the client terminal 50 and the image distribution server 20 can be reduced, and the network load can be further reduced. ..

In the present embodiment, the HDD 504 of the client terminal 50 has adopted the configuration of storing the map data 900, but the client terminal 50 may adopt the configuration of receiving the distribution of the map data 900 from the image distribution server 20. .. Further, the client terminal 50 may adopt a configuration in which the map data 900 is acquired from an external system via the Internet or the like.

As described above, according to the image distribution system 1 of the first and second embodiments, the image pickup data 903 or the compressed image pickup data 905 captured by the image pickup device 101 of the vehicle-mounted device 10 at a time desired by the user is delivered to the client terminal 50. can do.

The imaging processing program executed by the in-vehicle device 10 of the above-described first and second embodiments is a file in an installable format or an executable format, and is a CD-ROM, a flexible disk (FD), a CD-R, or a DVD (Digital Versatile). It is provided by being recorded on a computer-readable recording medium such as a Disk).
Further, the imaging processing program executed by the in-vehicle device 10 of the first and second embodiments may be stored on a computer connected to a network such as the Internet and provided by downloading via the network. .. Further, the imaging processing program executed by the in-vehicle device 10 of the first and second embodiments may be provided or distributed via a network such as the Internet.

Further, the imaging processing program executed by the in-vehicle device 10 of the first and second embodiments may be configured to be provided by incorporating it in a ROM or the like in advance.
The image pickup processing program executed by the in-vehicle device 10 of the first and second embodiments has a module configuration including the above-mentioned parts (imaging data acquisition unit, imaging data conversion unit, time information acquisition unit, position information acquisition unit, transmission unit). As the actual hardware, the CPU (processor) reads the imaging processing program from the storage medium and executes it, so that each of the above parts is loaded on the main storage device, and the imaging data acquisition unit, the imaging data conversion unit, and the like. The time information acquisition unit, the position information acquisition unit, and the transmission unit are generated on the main memory.

In addition, the data reception and storage processing program, the imaging data compression processing program, the image distribution processing program, and various request processing programs executed by the image distribution server 20 of the above-described first and second embodiments are installed. A file in a feasible format or an executable format is recorded and provided on a computer-readable recording medium such as a CD-ROM, a flexible disk (FD), a CD-R, or a DVD (Digital Versatile Disk).

In addition, a data reception and storage processing program, an imaging data compression processing program, an image distribution processing program, and various request processing programs executed by the image distribution server 20 of the first and second embodiments can be provided on the Internet or the like. It may be configured to be stored on a computer connected to the network and provided by downloading via the network. In addition, a data reception and storage processing program, an imaging data compression processing program, an image distribution processing program, and various request processing programs executed by the image distribution server 20 of the first and second embodiments are provided on a network such as the Internet. It may be configured to be provided or distributed via.

Further, the data reception and storage processing program, the imaging data compression processing program, the image distribution processing program, and various request processing programs executed by the image distribution server 20 of the first and second embodiments are stored in a ROM or the like. It may be configured to be incorporated in advance and provided.
The data reception and storage processing program, the imaging data compression processing program, the image distribution processing program, and various request processing programs executed by the image distribution server 20 of the first and second embodiments are described in the above-mentioned parts (reception). It has a module configuration including a unit, a position information link unit, an imaging data conversion unit, a compression unit, a request reception unit, a calculation unit, a judgment unit, and a distribution unit), and the CPU (processor) stores the above as the actual hardware. By reading the program from the medium and executing it, each of the above units is loaded on the main storage device, and the receiving unit, position information link unit, imaging data conversion unit, compression unit, request reception unit, calculation unit, judgment unit, and distribution unit It is designed to be generated on the main storage device.

Further, the image reception processing program and various request processing programs executed by the client terminals 50 of the above-described first and second embodiments are CD-ROMs and flexible disks (FD) in an installable format or an executable format file. ), CD-R, DVD (Digital Versatile Disk), etc., which are recorded on a computer-readable recording medium and provided.
Further, the image reception processing program and various request processing programs executed by the client terminals 50 of the first and second embodiments are stored on a computer connected to a network such as the Internet and provided by downloading via the network. It may be configured to do so. Further, the image reception processing program and various request processing programs executed by the client terminals 50 of the first and second embodiments may be provided or distributed via a network such as the Internet.

Further, the image reception processing program and various request processing programs executed by the client terminals 50 of the first and second embodiments may be configured to be provided by incorporating them in the ROM or the like in advance.
The image reception processing program and various request processing programs executed by the client terminals 50 of the first and second embodiments are modules including the above-mentioned parts (communication unit, calculation unit, screen configuration unit, display control unit, reception unit). As the actual hardware, the CPU (processor) reads the program from the storage medium and executes it, so that each part is loaded on the main storage device, and the communication unit, the arithmetic unit, the screen configuration unit, and the like. The display control unit and the reception unit are generated on the main memory.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1 Image distribution system 10, 10A to 10Z In-vehicle device 11 Imaging data acquisition unit 12 Imaging data conversion unit 13 Time information acquisition unit 14 Position information acquisition unit 15 Transmission unit 20 Image distribution server 21 Reception unit 22 Position information link unit 23 Imaging data conversion Unit 24 Compression unit 25,1025 Request reception unit 26 Calculation unit 27 Judgment unit 28,1028 Distribution unit 50 Client terminal 51,1051 Communication unit 52,1052 Display control unit 53,1053 Reception unit 54 Screen configuration unit 55 Calculation unit 101 Imaging device 105 Timing circuit 106 GPS receiver 107 GPS antenna 150, 150A to 150Z Vehicle 508 Display 650 Position image playback area 651,651a to 651d Icon 653 Selection screen display button 654 Time selection screen 660 Imaging data playback area 670 Seek bar 671 Pointer 672 Pause Button 900 Map data 901 Vehicle ID database 902 Location information database 903 Imaging data 904 Attribute database 905 Compressed imaging data 906 Compressed data attribute database 907 Authentication database 908 Public range database

Claims (14)

A receiving unit that receives the imaging data captured by the imaging device of the vehicle-mounted device mounted on the vehicle and the position information indicating the position of the vehicle-mounted device at each time.
A compression unit that compresses the imaging data after a predetermined time has passed since the imaging device imaged the image and generates compressed imaging data.
A request reception unit that receives a delivery request at a desired time from an information processing device,
A determination unit for determining whether or not the desired time is a past time within the predetermined time from the current time.
Based on the position information received by the receiving unit, a position image including an icon indicating the position of the in-vehicle device on the map data is delivered to the information processing device, and the determining unit determines that the desired time is set from the current time. When it is determined that the time is in the past within the time of, the image data for distribution is distributed to the information processing apparatus, and the determination unit determines that the desired time is in the past before the predetermined time. When it is determined that it is the time, the distribution unit that distributes the compressed imaging data to the information processing device and
An image distribution device including. A calculation unit that calculates the traveling direction and speed of the vehicle at the specific time from the position of the vehicle-mounted device of the position information at a specific time and the position of the vehicle-mounted device of the position information immediately before the specific time. And, with more
The icon generated by the distribution unit indicating the position of the in-vehicle device is an icon indicating the direction corresponding to the traveling direction of the vehicle in a color corresponding to the speed calculated by the calculation unit.
The image distribution device according to claim 1. A receiving unit that receives the imaging data captured by the imaging device of the vehicle-mounted device mounted on the vehicle and the position information indicating the position of the vehicle-mounted device at each time.
A compression unit that compresses the imaging data after a predetermined time has passed since the imaging device imaged the image and generates compressed imaging data.
A calculation unit that calculates the traveling direction and speed of the vehicle at the specific time from the position of the vehicle-mounted device of the position information at a specific time and the position of the vehicle-mounted device of the position information immediately before the specific time. When,
A request reception unit that receives a delivery request at a desired time from an information processing device,
A determination unit for determining whether or not the desired time is a past time within the predetermined time from the current time.
When the determination unit determines that the desired time is a past time within the predetermined time from the current time, the imaging data for distribution is distributed to the information processing apparatus, and the determination unit determines. When it is determined that the desired time is a time in the past before the predetermined time, the compressed imaging data is distributed to the information processing apparatus, and the color corresponding to the speed calculated by the calculation unit is described. A distribution unit that generates a position image that displays an icon indicating the position of the in-vehicle device on the map data in a direction corresponding to the traveling direction of the vehicle.
An image distribution device including. The distribution unit reproducibly distributes the imaging data or the compressed imaging data on the same screen as the position image.
The image distribution device according to claim 1 or 3. The distribution unit can reproduce on the same screen the operation information that allows the user to instruct the user to rewind the imaged data, the compressed imaged data, and the position image to an arbitrary time in the past. Delivered to
The request receiving unit receives the rewinding instruction by the user, and receives the instruction.
The determination unit determines whether or not the arbitrary time in the past specified by the rewind instruction by the user is a past time within the predetermined time from the current time.
Further, when the determination unit determines that the arbitrary time in the past is a past time within the predetermined time from the current time, the distribution unit distributes the imaging data to the information processing apparatus. When the determination unit determines that the arbitrary time in the past is a time in the past before the predetermined time, the compressed imaging data is distributed to the information processing apparatus.
The image distribution device according to claim 4. A conversion unit that converts the imaging data received by the receiving unit into imaging data for distribution and stores the imaging data.
Further prepare,
The image distribution device according to any one of claims 1 to 5. The receiving unit receives the speed of the vehicle from the in-vehicle device.
The image distribution device according to any one of claims 1 to 6. The request receiving unit receives the identification information of the user who has logged in to the information processing device from the information processing device.
The distribution unit distributes the imaging data or the compressed imaging data for which the user has authority, and the position image to the information processing device to which the user has logged in.
The image distribution device according to claims 1 to 5. The request receiving unit receives the identification information of the user who has logged in to the information processing device from the information processing device.
The distribution unit does not distribute the imaging data or the compressed imaging data to which the user does not have the authority, and the position image to the information processing device to which the user has logged in.
The image distribution device according to claims 1 to 5. The conversion unit detects an image subject to privacy protection from the captured data, and performs mosaic processing on the detected image subject to privacy protection.
The image distribution device according to claim 6. An image distribution system including an in-vehicle device and an image distribution device.
The in-vehicle device is
An image pickup device that captures images and
A transmission means for transmitting the image pickup data captured by the image pickup device and the position information indicating the position of the vehicle-mounted device at each time to the image distribution device is provided.
The image distribution device is
A receiving unit that receives image data captured by an imaging device of an in-vehicle device mounted on a vehicle and position information indicating a position of the in-vehicle device at each time.
A compression unit that compresses the imaging data after a predetermined time has passed since the imaging device imaged the image and generates compressed imaging data.
A request reception unit that receives a delivery request at a desired time from an information processing device,
A determination unit for determining whether or not the desired time is a past time within the predetermined time from the current time.
Based on the position information received by the receiving unit, an icon indicating the position of the in-vehicle device on the map data is delivered to the information processing device, and the determining unit determines that the desired time is within the predetermined time from the current time. When it is determined that the time is in the past, the imaged data for distribution is distributed to the information processing apparatus, and the determination unit determines that the desired time is a past time before the predetermined time. When it is determined, the distribution unit that distributes the compressed imaging data to the information processing device and
Image distribution system equipped with. An image distribution system including an in-vehicle device and an image distribution device.
The in-vehicle device is
An image pickup device that captures images and
A transmission means for transmitting the image pickup data captured by the image pickup device and the position information indicating the position of the vehicle-mounted device at each time to the image distribution device is provided.
The image distribution device is
A receiving unit that receives the imaging data captured by the imaging device of the vehicle-mounted device mounted on the vehicle and the position information indicating the position of the vehicle-mounted device at each time.
A compression unit that compresses the imaging data after a predetermined time has passed since the imaging device imaged the image and generates compressed imaging data.
A calculation unit that calculates the traveling direction and speed of the vehicle at the specific time from the position of the vehicle-mounted device of the position information at a specific time and the position of the vehicle-mounted device of the position information immediately before the specific time. When,
A request reception unit that receives a delivery request at a desired time from an information processing device,
A determination unit for determining whether or not the desired time is a past time within the predetermined time from the current time.
When the determination unit determines that the desired time is a past time within the predetermined time from the current time, the imaging data for distribution is distributed to the information processing apparatus, and the determination unit determines. When it is determined that the desired time is a time in the past before the predetermined time, the compressed imaging data is distributed to the information processing apparatus, and the color corresponding to the speed calculated by the calculation unit is described. A distribution unit that generates a position image that displays an icon indicating the position of the in-vehicle device on the map data in a direction corresponding to the traveling direction of the vehicle.
Image distribution system equipped with. An image distribution method executed by an image distribution device.
A reception step for receiving the imaging data captured by the imaging device of the vehicle-mounted device mounted on the vehicle and the position information indicating the position of the vehicle-mounted device at each time.
A compression step of compressing the imaging data after a predetermined time has passed since the imaging device imaged the image to generate compressed imaging data.
A first distribution step of distributing an icon indicating the position of the in-vehicle device on the map data to the information processing device based on the position information received in the reception step.
A request reception step for receiving a delivery request at a desired time from the information processing device, and
A determination step for determining whether or not the desired time is a past time within the predetermined time from the current time, and
When it is determined in the determination step that the desired time is a past time within the predetermined time from the current time, the imaging data for distribution is distributed to the information processing apparatus.
When it is determined in the determination step that the desired time is a time in the past before the predetermined time, a second distribution step of distributing the compressed imaging data to the information processing apparatus is performed.
Image distribution method including. An image distribution method executed by an image distribution device.
A reception step for receiving the imaging data captured by the imaging device of the vehicle-mounted device mounted on the vehicle and the position information indicating the position of the vehicle-mounted device at each time.
A compression step of compressing the imaging data after a predetermined time has passed since the imaging device imaged the image to generate compressed imaging data.
A calculation step of calculating the traveling direction and speed of the vehicle at the specific time from the position of the vehicle-mounted device of the position information at a specific time and the position of the vehicle-mounted device of the position information immediately before the specific time. When,
A request reception step for receiving a delivery request at a desired time from an information processing device,
A determination step for determining whether or not the desired time is a past time within the predetermined time from the current time, and
When it is determined in the determination step that the desired time is a past time within the predetermined time from the current time, the imaging data for distribution is distributed to the information processing apparatus.
When it is determined in the determination step that the desired time is a time in the past before the predetermined time, the first distribution step of distributing the compressed imaging data to the information processing apparatus and the distribution step.
An icon indicating the position of the in-vehicle device in a color corresponding to the speed calculated in the calculation step is displayed.
A second distribution step of generating a position image to be displayed on the map data in a direction corresponding to the traveling direction of the vehicle, and
Image distribution method including.

Images