JP7822903B2 - Information provision device, information provision method - Google Patents

Description

The present invention relates to video provision technology.

A system is known that collects video recording data from a shooting device such as a drive recorder via a communication network.

For example, a data collection system is known in which a photographing device has pre-set conditions for the photographed image data to be collected, and the photographed image data that meets those conditions is sent to a data collection device, enabling the rapid collection of desired data (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2020-38408

One way to use collected recording data is to associate the location information of the location where the video represented by the recording data was captured with that recording data, and then provide the user with video captured at the location specified by the user's location information.

However, the video provided in the manner described above may not be suitable for the user's intended use. If such video is provided, the user may have the impression that the video is boring.

In one aspect, the present invention aims to enable the provision of images suited to specific applications.

An information provision device according to one aspect of the present disclosure includes a recorded data collection unit, a message information collection unit, a determination unit, a memory unit, a reception unit, and a provision unit. The recorded data collection unit collects recorded data including video, date and time information indicating the date and time the video was captured, and location information indicating the location where the video was captured. The message information collection unit collects message information posted to a social networking service (SNS) and related to the recorded data based on the date and time information and location information included in the recorded data. The determination unit determines map attributes for the recorded data, indicating a purpose-specific map to which the recorded data is mapped, based on words included in the message information related to the recorded data. The memory unit stores the recorded data, the message information related to the recorded data, and the map attributes for the recorded data in association with each other. The reception unit receives a request for the provision of recorded data, the request including the map attributes. In response to receiving the request, the providing unit retrieves from the storage unit the recorded data associated with the map attribute included in the request and the message information associated with the recorded data, and provides them to the requestor.

According to one aspect, the present invention has the effect of making it possible to provide images suited to specific applications.

FIG. 1 illustrates an example of the configuration of an information providing system. FIG. 2 is a diagram illustrating an example of a detailed configuration of an information providing device. FIG. 2 is a diagram illustrating an example of a data structure of recorded data. FIG. 10 illustrates an example data structure of message information. FIG. 10 is a diagram showing an example of a crime prevention and monitoring map display. FIG. 10 is a diagram showing an example of a display of a navigation map. FIG. 10 is a diagram showing an example of a map attribute determination table. FIG. 10 is a diagram showing a first example of the data structure of a recording data request. FIG. 1 illustrates an example of a hardware configuration of a computer. 10 is a flowchart illustrating an example of processing content of a collection process. 10 is a flowchart showing an example of the process contents of a map attribute determination process. 10 is a flowchart showing a first example of the process content of a recorded data providing process. 10 is a flowchart showing the process contents of a changed portion of the map attribute determination process. FIG. 10 is a diagram showing a second example of the data structure of a recording data request. 10 is a flowchart showing a second example of the process of providing recorded data.

The following describes the embodiment in detail with reference to the drawings.

Figure 1 shows an example configuration of the information provision system 1.

The information provision system 1 comprises an information provision device 10 and multiple recording devices 20. The information provision device 10 and the recording devices 20 can exchange various types of data via a communication network 30. The information provision device 10 can also exchange various types of data with a mobile terminal 40 via a communication line (not shown), and can also exchange various types of data with a social networking service (SNS) server 50.

A plurality of recording devices 20 are mounted on each of a plurality of vehicles 60. The recording device 20 stores recorded data of video 21 (live road video 21-1) captured by the vehicle 60 around the vehicle 60 in a storage device. The recording device 20 is equipped with a clock for obtaining date and time information indicating the date and time when the video 21 was captured, and a location detection device, such as a GPS (Global Positioning System) device, for obtaining location information indicating the location where the video 21 was captured. The recording device 20 adds the date and time information and location information for the video 21 to the recorded data of the video 21 and stores it.

In this embodiment, the recording device 20 is provided with a video provision instruction button as one of the input units 23. The video provision instruction button is pressed by an occupant of the vehicle 60 while capturing video 21 of a subject of interest. Such subjects include, but are not limited to, traffic congestion, flooded roads, road closures, traffic accidents, roadside fires and other traffic obstructions, people with unnatural costumes or behavior, and events such as street live shows and performances.

The recording device 20 sends to the information providing device 10 the recorded data of the video 21 of the subject of interest that was recorded during the period from when the video provision instruction button was pressed until a predetermined time has elapsed. Note that the length of the recording time of the video represented by the recorded data to be sent may be freely settable. The recorded data may be sent to the information providing device 10 immediately after the end of recording, after a predetermined time has elapsed since the end of recording, or in response to a request from the information providing device 10 to send the recorded data.

The information providing device 10 collects recorded video 21 data sent from each of the multiple recording devices 20, and also collects message information related to the collected recorded video data from the SNS server 50. The information providing device 10 determines the attributes of the recorded video data by analyzing the collected message information. Furthermore, when the information providing device 10 receives a request for providing recorded video data that includes a specified attribute from the mobile terminal 40, it provides the recorded video data having the specified attribute to the mobile terminal 40.

The mobile terminal 40 is, for example, a smartphone carried by the user or a tablet terminal installed in the user's vehicle. The mobile terminal 40 plays back the recorded data provided by the information providing device 10, including the specified attributes, and displays the video 21. At this time, the mobile terminal 40 displays the video 21 (street live video 21-1) by mapping the location of the captured image on a purpose-specific map 41 (event map 41-1) identified by the attributes specified in the recorded data.

The configuration of the information providing device 10 will now be described in more detail. Figure 2 shows an example of the detailed configuration of the information providing device 10.

The information providing device 10 includes a communication unit 70, a control unit 80, and a memory unit 90.

The communication unit 70 connects to the communication network 30 and exchanges various data with each of the multiple recording devices 20. The communication unit 70 also connects to a communication line (not shown) and exchanges various data with the mobile terminal 40. The communication unit 70 also exchanges various data with the SNS server 50.

The control unit 80 includes a recording data collection unit 81, a message information collection unit 82, a determination unit 83, a reception unit 84, and a provision unit 85.

The recording data collection unit 81 collects recording data of the video 21 sent from each of the multiple recording devices 20 and received by the communication unit 70.

Figure 3 shows an example of the data structure of the recording data, which is one of the various types of data sent from the recording device 20. The recording data is composed of video data representing the video 21, associated with recording data identification information, date and time information, and location information.

Recording data identification information is information that identifies each recording data.

The date and time information and location information indicate the date and time when the video 21 was captured and the location where the video 21 was captured, respectively.

Return to the explanation of Figure 2.

The message information collection unit 82 collects message information related to the video recording data collected by the video recording data collection unit 81. Message information is information about messages posted on SNS, such as tweets posted on Twitter (registered trademark) operated by Twitter Incorporated. Message information is stored and managed by the SNS server 50.

The message information collection unit 82 collects message information related to the recorded data from the SNS server 50 based on the date and time information and location information contained in the recorded data.

An example of the data structure of message information sent from the SNS server 50 is shown in Figure 4. The recorded data is composed of the message body, which is text data, associated with message identification information, posting date and time, posting location, and poster information.

Message identification information is information that identifies each message information.

The posting date and time and posting location are information that indicate the date and time the message was posted and the location where the message was posted, respectively.

Poster information is information about the person who posted the message, and includes attribute information about the poster, such as the poster's name, gender, and age.

Return to the explanation of Figure 2.

The determination unit 83 determines map attributes for the recorded data collected by the recorded data collection unit 81. The map attributes are attributes that indicate the purpose-specific map 41 to which the recorded data is mapped. The purpose-specific map 41 is a map in which information that is presumed to be related to the purpose of the map when using the map is mapped to a location related to that information.

Figure 1 shows an example of an event map 41-1 displayed on the display unit of the mobile device 40. The event map 41-1 is an example of a purpose-specific map 41, and is a map that maps the locations of locations where various events such as events, live shows, and street performances are held. Live street footage 21-1 is mapped onto this event map 41-1. The live street footage 21-1 is footage 21 represented by one of the recorded data collected by the recorded data collection unit 81. Note that the determination unit 83 determines "event" as the map attribute for the recorded data of the live street footage 21-1.

Other examples of usage maps 41 are explained below.

Figure 5 shows an example of the display of a crime prevention/monitoring map 41-2. The crime prevention/monitoring map 41-2 is also an example of a purpose-specific map 41. The crime prevention/monitoring map 41-2 is a map suitable for crime prevention and monitoring of children and the elderly. A person video 21-2 is mapped onto this crime prevention/monitoring map 41-2. The person video 21-2 is also an image 21 represented by one of the recorded data collected by the recorded data collection unit 81. Note that the determining unit 83 determines "monitoring" as the map attribute for the recorded data of the person video 21-2.

Figure 6 shows an example display of a navigation map 41-3. The navigation map 41-3 is also an example of a purpose-specific map 41. The navigation map 41-3 is a map for providing various traffic information to automobile drivers. Accident video 21-3 is mapped onto this navigation map 41-3. The accident video 21-3 is also a video 21 represented by one of the recorded data collected by the recorded data collection unit 81. Note that the determination unit 83 determines "navigation" as the map attribute for the recorded data of the accident video 21-3.

The determination unit 83 determines the map attribute based on the words included in the message information related to the recorded data to which the map attribute is associated. More specifically, the determination unit 83 references a map attribute determination table prepared in advance and determines the map attribute associated with the words used in the message information related to the recorded data in the map attribute determination table as the map attribute for the recorded data.

An example of a map attribute determination table is shown in Figure 7. In this example, the words "traffic jam," "flooding," "flood," "earthquake," "tsunami," "eruption," "accident," "fire," and "hit" are registered in association with the map attribute "navigation." The words "wandering," "elderly," and "commuting to school" are registered in association with the map attribute "supervision," and the words "molester," "attacked," "suspicious person," "exhibitionist," "thug," "stabbed," and "pervert" are registered in association with the map attribute "crime prevention." Finally, the words "street performance" and "location scouting" are registered in association with the map attribute "event."

The determination unit 83 first extracts words from the message body included in the message information. To extract these words, morphological analysis techniques are used, for example.

The map attribute determination table is stored in advance, for example, in the memory unit 90.

Next, for words extracted from the message information related to the recorded data that are registered in the map attribute determination table, the determination unit 83 determines the map attribute associated with the words in the map attribute determination table as the map attribute for the recorded data.

Note that a single piece of recorded data does not necessarily have to have only one map attribute determined. For example, if multiple words extracted from message information are associated with multiple different map attributes in the map attribute determination table, the determination unit 83 determines the multiple map attributes for the recorded data to which the message information relates. Furthermore, if multiple pieces of message information are collected for a single piece of recorded data, the determination unit 83 determines, for that recorded data, the map attribute associated with the word registered in the table, out of the words extracted from each of the multiple pieces of message information.

In addition, when multiple pieces of message information are collected for one piece of recorded data, the determination unit 83 may determine the map attribute for that piece of recorded data based on words contained in two or more of the collected pieces of message information. For example, consider a case where three pieces of message information are collected for one piece of recorded data, and the word "traffic jam" is extracted from only one of them, and the word "street performance" is extracted from two of them. In this case, the determination unit 83 may use "street performance" instead of "traffic jam" and determine "event," which is associated with "street performance" in the map attribute determination table illustrated in FIG. 7, as the map attribute for that piece of recorded data.

The recording data collected by the recording data collection unit 81, the message information related to the recording data collected by the message information collection unit 82, and the map attributes for the recording data determined by the determination unit 83 are associated and stored in the storage unit 90.

The reception unit 84 receives a request for recording data from the mobile terminal 40.

Figure 8 shows a first example of the data structure of a recording data request sent from the mobile device 40 for this request. In this example, specific data indicating that the data string is a "recording data request" is placed at the beginning, followed by the following data: "request destination identifier," "request source identifier," "map attribute," "target date and time," and "target location."

The "request destination identifier" is an identifier that identifies the information providing device 10 that is the destination of the recorded data request, and the "request source identifier" is an identifier that identifies the mobile terminal 40 that is the source of the recorded data request.

"Map attributes" is information that identifies the map attributes associated with the requested recording data.

The "target date and time" is information used to set the condition for the date and time when the video 21 to be mapped on the usage-specific map 41 was captured, and is date and time information used to set the condition for the date and time information in the recorded data that is the subject of the request. This "target date and time" is set, for example, with information indicating the date and time when the mobile terminal 40 sent the recorded data request. Information indicating the date and time specified by the user of the mobile terminal 40 may also be set as the "target date and time."

The "target location" is information used to set the location conditions for the capture location of the video 21 to be mapped on the usage-specific map 41, and is location information used to set conditions for the location information in the video recording data that is the subject of the request. This "target date and time" is set to information indicating the location of the location from which the mobile terminal 40 sent the video recording data request, obtained, for example, by a location detection device such as a GPS device provided on the mobile terminal 40. The "target location" may also be information indicating the location of a location specified by the user of the mobile terminal 40, for example, by a tap operation on the map displayed on the mobile terminal 40.

When the mobile terminal 40 receives a display request for a usage-specific map 41 from a user, it sends a recording data request to the information providing device 10, which stores information specifying the map attributes of the requested usage-specific map 41. For example, if a display request for an event map 41-1 is received, a recording data request is sent in which information specifying "event" is stored in the map attribute. Furthermore, for example, if a display request for a crime prevention/monitoring map 41-2 is received, a recording data request is sent in which information specifying "monitoring" or "crime prevention" is stored in the map attribute. Alternatively, for example, if a display request for a navigation map 41-3 is received, a recording data request is sent in which information specifying "navigation" is stored in the map attribute. Such recording data requests are accepted by the accepting unit 84.

In response to receiving a request for the provision of recorded data, the providing unit 85 obtains from the storage unit 90 the recorded data associated with the map attributes included in the request and the message information associated with the recorded data, and provides these to the mobile terminal 40 that made the request.

When the mobile terminal 40 receives the recorded data, it displays the video 21 represented by the recorded data, mapped to the location indicated by the location information of the recorded data on a map displayed based on map data provided by a map server (not shown). In this way, the mobile terminal 40 provides the user with a purpose-specific map 41 that corresponds to the display request received from the user.

The information providing device 10 is configured as described above and provides video 21 suited to the user's needs.

The information providing device 10 may also be configured using a computer combined with software.

Figure 9 shows an example hardware configuration of computer 100.

The computer 100 includes, as its components, the following hardware components: a processor 101, a memory 102, a storage device 103, a reading device 104, a communication interface 106, and an input/output interface 107. These components are connected via a data bus 108, allowing data to be exchanged between the components.

The processor 101 may be, for example, a single processor, or a multi-processor and multi-core processor. The processor 101 provides the functions of the control unit 80 by using the memory 102 to execute a program that describes the procedures for each process, such as the recorded data collection process and the recorded data provision process described below.

Memory 102 is, for example, semiconductor memory and includes a RAM area and a ROM area. RAM is an abbreviation for Random Access Memory. ROM is an abbreviation for Read Only Memory.

The storage device 103 is, for example, a hard disk, a semiconductor memory such as a flash memory, or an external storage device. When the information providing device 10 is configured using the computer 100, the storage device 103 provides the functions of the storage unit 90.

The reading device 104 accesses the removable storage medium 105 in accordance with instructions from the processor 101. The removable storage medium 105 may be realized, for example, as a semiconductor device (such as a USB memory), a medium that inputs and outputs information magnetically (such as a magnetic disk), or a medium that inputs and outputs information optically (such as a CD-ROM or DVD). Note that USB is an abbreviation for Universal Serial Bus. CD is an abbreviation for Compact Disc. DVD is an abbreviation for Digital Versatile Disk.

The communication interface 106 sends and receives data via various communication lines, for example, in accordance with instructions from the processor 101. When the information providing device 10 is configured using the computer 100, the communication interface 106 provides the functions of the communication unit 70.

The input/output interface 107 provides an interface with input devices such as a keyboard, mouse, button switch, or touch panel. The input/output interface 107 also provides an interface with output devices such as a display device or audio output device.

The program executed by the processor 101 of this computer 100 is provided, for example, in the following form:

(1) It is pre-installed in the storage device 103.
(2) Provided by a removable storage medium 105.
(3) Provided to the communication interface 106 from a program server or the like via the communication network 30 or the like.

Note that the hardware configuration of the computer 100 is an example, and embodiments are not limited to this. For example, some or all of the functions of the functional units described above may be implemented as hardware using FPGAs, SoCs, etc. Note that FPGA is an abbreviation for Field Programmable Gate Array. SoC is an abbreviation for System-on-a-chip.

Next, we will explain the various processes performed by the control unit 80 of the information providing device 10.

When the information providing device 10 is configured by combining software with the computer 100 in Figure 9, the processor 101 can be made to execute an information processing program that describes the processing described below.

First, we will explain the collection process. The collection process involves collecting recorded data and message information and determining map attributes for the collected message information.

Figure 10 is a flowchart showing an example of the collection process. Of the processes shown in Figure 10, steps S101 and S102 are performed by the recording data collection unit 81, and steps S103 to S107 are performed by the message information collection unit 82. Furthermore, step S108 is performed by the determination unit 83.

When the processing in Figure 10 begins, first, in S101, a process is performed to determine whether the recording data transmitted from the recording device 20 has been received by the communication unit 70. If it is determined in this determination process that the recording data has been received (if the determination result is YES), the process proceeds to S102. On the other hand, if it is determined in this determination process that the recording data has not been received (if the determination result is NO), the process in S101 is repeated until it is determined that the recording data has been received.

In S102, the recording data received by the communication unit 70 is stored in the storage unit 90.

In S103, the process acquires date and time information and location information from the received recording data.

In S104, the search period and search area are set based on the date and time information and location information acquired in the process of S103.

The search period and search area represent the conditions for the message information to be collected, and respectively represent the conditions for the posting date and time and posting location contained in the message information. Here, message information whose posting date and time are within the search period and whose posting location is within the search area will be collected.

In the processing of S104, periods within a predetermined time before and after the date and time information are set as the search period, and locations within a predetermined distance from the location information are set as the search area. Therefore, message information posted to SNS at a posting date and time that is within the predetermined time difference from the date and time information included in the video recording data, and at a posting location that is within the predetermined distance from the location indicated by the location information included in the video recording data, is targeted for collection.

In S105, a message information search request including information about the search period and search area set in the processing of S104 is sent to the SNS server 50.

When the SNS server 50 receives a message information search request, it searches for message information that meets the search period and search area conditions included in the request, and sends the message information obtained as a search result to the information providing device 10.

In S106, processing is performed to collect message information sent in response to the message information search request sent in the processing of S104 and received by the communication unit 70. The collected message information is treated as message information related to the video recording data determined to have been received in the processing of S101.

In S107, the message information collected in S106 is stored in the storage unit 90 in association with the recording data stored in S102. To manage the association between recording data and message information, for example, a management table may be created that associates identification information for recording data with identification information for message information, and stored in the storage unit 90.

In S108, a map attribute determination process is performed. This process determines the map attributes for the recorded data determined to have been received in S101 using the message information related to that recorded data collected in S106. Details of this map attribute determination process will be described later.

When processing in S108 is completed, processing for the recording data determined to have been received in processing in S101 is completed. Processing then returns to S101, where processing is performed to determine whether new recording data has been received.

The above process is the collection process.

Next, we will explain the map attribute determination process, which is the process at S108 in Figure 10. Figure 11 is a flowchart showing an example of the map attribute determination process.

When the processing of Figure 11 begins, first, in S111, a process is performed to determine whether multiple pieces of message information were collected by the processing of S106 of Figure 10, which was performed immediately before the start of this processing. In this determination process, if it is determined that multiple pieces of message information were collected (if the determination result is YES), the process proceeds to S113. On the other hand, in this determination process, if it is determined that only one piece of message information was collected (if the determination result is NO), the process proceeds to S112.

In S112, words are extracted from the message information collected in S106 of Figure 10. After S112, processing proceeds to S115.

On the other hand, in S113, a process is performed to extract words from each of the multiple pieces of message information collected by the process of S106 in Figure 10.

In addition, in the processes of S112 and S113, for example, morphological analysis is performed on the message body included in the message information to extract words.

Following the processing of S113, in S114, processing is performed to extract words that are included in two or more pieces of message information from the extracted words.

In S115, the map attribute determination table is referenced to identify a word registered in the table from among the words extracted by the processing in S112 or S114, and the map attribute associated with the identified word in the table is obtained. The map attribute obtained by this processing is determined as the map attribute for the video recording data determined to have been received by processing 101 in Figure 10.

In S116, the map attributes acquired in S115 are stored in the storage unit 90 in association with the recording data stored in S102 of FIG. 10. Note that the aforementioned management table for managing the association between recording data and message information may also be used to manage the association between recording data and map attributes.

When processing in S116 is completed, the map attribute determination process ends and processing returns to the collection process in Figure 10.

The above processing is the map attribute determination process.

Next, we will explain the recording data provision process. The recording data provision process is a process that, in response to a recording data request in which a map attribute is specified, provides the requesting source with the recording data associated with that map attribute, along with message information related to that recording data.

Figure 12 is a flowchart showing a first example of the processing content of the recorded data provision process. Of the processing shown in Figure 12, steps S201 and S202 are performed by the reception unit 84, and steps S203 to S207 are performed by the provision unit 85.

When the processing in FIG. 12 starts, first, in S201, a process is performed to determine whether a recording data request transmitted from the mobile terminal 40 has been received by the communication unit 70. If it is determined in this determination process that a recording data request has been received (if the determination result is YES), the process proceeds to S202. On the other hand, if it is determined in this determination process that a recording data request has not been received (if the determination result is NO), the process in S201 is repeated until it is determined that a recording data request has been received.

Next, in S202, the recording data request received by the communication unit 70 is accepted, and the map attributes, target date and time, and target location information contained in the recording data request is acquired.

Next, in S203, the target date and time and target location information acquired in the process of S202 is used to set extraction conditions for the recorded data to be provided to the requester of the recorded data request.

In this S203 process, the date and time up to a predetermined period before the date and time indicated by the target date and time is set as the extraction condition for recorded data for the date and time information. Note that a date and time within a predetermined period, with the date and time indicated by the target date and time as the middle of the period, may also be set as the extraction condition for recorded data for the date and time information. Alternatively, a period may be set in advance for each map attribute, and the period set for the map attribute obtained in S202 may be used to set the extraction condition for recorded data for the date and time information.

In addition, in step S203, locations whose distance from the location indicated by the target location is within a predetermined distance are set as extraction conditions for recorded data for the location information. Note that distances may be set in advance for each map attribute, and the distances set for the map attributes obtained in step S202 may be used to set extraction conditions for recorded data for the location information.

Next, in S204, the storage unit 90 performs a process to identify the recorded data associated with the map attributes obtained in the process of S202.

Next, in S205, recording data that matches the extraction conditions for both date and time information and location information set in the processing of S203 is extracted from the recording data identified in the processing of S204 and read from the storage unit 90.

Next, in S206, the storage unit 90 reads and acquires the message information associated with the recording data extracted in S205.

Next, in S207, the communication unit 70 is controlled to transmit the recording data acquired in S205 and the message information acquired in S206 to the mobile terminal 40 that made the recording data request accepted in S202. Upon receiving this recording data, the mobile terminal 40 displays the video 21 represented by the recording data, mapped to the position indicated by the location information of the recording data on a map displayed based on map data provided by a map server (not shown).

After that, when processing in S207 is completed, the process of providing recording data in response to the recording data request determined to have been received in processing in S201 ends. Processing then returns to S201, where it is determined whether a new recording data request has been received.

The above process is the first example of the recording data provision process.

By performing the collection process and recorded data provision process described above by the information providing device 10, video 21 suited to the user's purpose is provided to the user's mobile device 40, and a purpose-specific map 41 onto which the video 21 is mapped can be displayed on the mobile device 40.

In addition, the video 21 provided to the user via the mobile terminal 40 may be adapted not only to suit the intended purpose, but also to suit the user's attributes (gender, age, etc.).

For example, the event map 41-1 mentioned above is a purpose-specific map 41 that maps the locations of locations where various events are held. Here, the purpose-specific map 41 may be further subdivided according to user attributes, such as event maps 41-1 for men or for people in their twenties, and the information providing device 10 may provide the mobile terminal 40 with images 21 suitable for mapping onto each of these maps.

To adapt the video 21 provided by the information providing device 10 to the mobile terminal 40 to suit the user's attributes as described above, the embodiment described above can be partially modified. The details of this partial modification are explained below.

First, let us look at Figure 13. Figure 13 is a flowchart showing the processing content of the change portion of the map attribute determination process. This flowchart shows the processing performed by the determination unit 83 following the processing of S116 in the flowchart shown in Figure 11.

Following the processing of S116 in FIG. 11, in S121, a process is performed in which poster information is extracted from the message information from which words were extracted by the processing of S112 or S114 in FIG. 11.

Next, in S122, the poster information acquired in S121 is stored in the storage unit 90 as a user attribute indicating the user of the usage-specific map 41 to which the recorded data is mapped, in association with the recorded data stored in S102 of FIG. 10. Note that the aforementioned management table for managing the association between recorded data, message information, and map attributes may also be used to manage the association between recorded data and poster information.

When processing S122 is completed, the map attribute determination process ends and processing returns to the collection process in Figure 10.

Next, we will explain Figure 14. Figure 14 shows a second example of the data structure of a recording data request sent from the mobile terminal 40.

The second example shown in Figure 14 has a structure in which "user attribute" data is placed between the "map attribute" and "target date and time" data in each piece of data, which is the same as the first example shown in Figure 8.

"User attributes" is information about the attributes of the user of the usage map 41 to which the requested recording data is mapped.

When the mobile terminal 40 receives a display request for a usage-specific map 41 from a user, it sends a recording data request to the information providing device 10 that stores information specifying the map attributes of the usage-specific map 41 and the attributes of the user of the usage-specific map 41. For example, if a display request for an event map 41-1 for men is received, a recording data request is sent that stores information specifying "event" in the map attributes and information indicating "male" in the user attributes.

Next, we will explain Figure 15. Figure 15 is a flowchart showing a second example of the processing content of the recorded data provision process. This second example replaces the first example shown in Figure 12.

Of the processes shown in Figure 15, steps S211 and S212 are performed by the reception unit 84, and steps S213 to S207 are performed by the provision unit 85.

When the processing in Figure 15 starts, first, in S211, a process is performed to determine whether a recording data request transmitted from the mobile terminal 40 has been received by the communication unit 70. If it is determined in this determination process that a recording data request has been received (if the determination result is YES), the process proceeds to S212. On the other hand, if it is determined in this determination process that a recording data request has not been received (if the determination result is NO), the process of S211 is repeated until it is determined that a recording data request has been received.

Next, in S212, the recording data request received by the communication unit 70 is accepted, and the process of acquiring the map attributes, user attributes, target date and time, and target location information contained in the recording data request is performed.

Next, in S213, the target date and time and target location information obtained in the processing of S212 is used to set extraction conditions for the recorded data to be provided to the requester of the recorded data request.

In this S213 process, the date and time up to a predetermined period before the date and time indicated by the target date and time is set as the extraction condition for recorded data for the date and time information. Note that a date and time within a predetermined period, with the date and time indicated by the target date and time as the middle of the period, may also be set as the extraction condition for recorded data for the date and time information. Alternatively, a period may be set in advance for each map attribute, and the period set for the map attribute obtained in S212 may be used to set the extraction condition for recorded data for the date and time information.

In addition, in the process of S213, locations whose distance from the location indicated by the target location is within a predetermined distance are set as extraction conditions for recorded data for the location information. Note that distances may be predetermined for each map attribute, and the distances defined for the map attributes obtained in the process of S212 may be used to set extraction conditions for recorded data for the location information.

Next, in S214, the storage unit 90 performs a process to identify the recorded data associated with the combination of map attributes and user attributes obtained in the process of S212.

Next, in S215, recording data that matches the extraction conditions for both date and time information and location information set in the processing of S213 is extracted from the recording data identified in the processing of S214 and read from the storage unit 90.

Next, in S216, the storage unit 90 reads and acquires the message information associated with the recording data extracted in S215.

Next, in S217, the communication unit 70 is controlled to transmit the recording data acquired in S215 and the message information acquired in S216 to the mobile terminal 40 that made the recording data request accepted in S212. Upon receiving this recording data, the mobile terminal 40 displays the video 21 represented by the recording data, mapped to the position indicated by the location information of the recording data on a map displayed based on map data provided by a map server (not shown).

After that, when processing of S217 is completed, the process of providing recording data based on the recording data request determined to have been received in processing of S211 ends. Processing then returns to S211, where it is determined whether a new recording data request has been received.

The above process is a second example of the recording data provision process.

Note that the embodiments described above also include the following information provision programs and recording media on which such programs are recorded.

Collecting video recording data including video, date and time information indicating the date and time when the video was captured, and location information indicating the location where the video was captured;
Collecting message information posted on a social networking service (SNS) and related to the video recording data based on the date and time information and the location information included in the video recording data;
determining a map attribute for the video recording data, the map attribute indicating a purpose-specific map to which the video recording data is mapped, based on words included in the message information related to the video recording data;
storing the recorded data, the message information related to the recorded data, and the map attribute of the recorded data in a storage unit in association with each other;
receiving a request for providing the recorded data, the request including the map attribute;
In response to the reception of the request, the recording data associated with the map attribute included in the request and the message information associated with the recording data are obtained from the storage unit, and are provided to a source of the request.
An information providing program that causes a computer to perform the following:

While the disclosed embodiments and their advantages have been described in detail above, those skilled in the art will be able to make various modifications, additions, and omissions without departing from the scope of the present invention, which is clearly set forth in the claims.

1 Information provision system 10 Information provision device 20 Recording device 21 Video 21-1 Live road video 21-2 Person video 21-3 Accident video 30 Communication network 40 Mobile terminal 41 Map by use 41-1 Event map 41-2 Crime prevention/monitoring map 41-3 Navigation map 50 SNS server 60 Vehicle 70 Communication unit 80 Control unit 81 Recorded data collection unit 82 Message information collection unit 83 Decision unit 84 Reception unit 85 Provision unit 90 Storage unit 100 Computer 101 Processor 102 Memory 103 Storage device 104 Reading device 105 Removable storage medium 106 Communication interface 107 Input/output interface 108 Data bus

Claims (5)

a recording data collection unit that collects recording data including video, date and time information indicating the date and time when the video was captured, and location information indicating the location where the video was captured;
a message information collection unit that collects message information posted on a social networking service and related to the video recording data based on the date and time information and the location information included in the video recording data;
a determining unit that determines a map attribute for the video recording data, the map attribute indicating a purpose-specific map to which the video recording data is mapped, based on words included in the message information related to the video recording data;
a storage unit that stores the recorded data, the message information related to the recorded data, and the map attribute of the recorded data in association with each other;
a receiving unit that receives a request for providing the recorded data, the request including the map attribute;
a providing unit that, in response to receiving the request, obtains from the storage unit the recorded data associated with the map attribute included in the request and the message information associated with the recorded data, and provides the obtained data to a requester of the request;
An information providing device comprising: The information providing device of claim 1, wherein the message information collection unit collects, as the message information related to the video recording data, message information posted to the social networking service at a posting date and time that is within a predetermined time of the date and time information included in the video recording data, and at a posting location that is within a predetermined distance from the location indicated by the location information included in the video recording data. The information providing device described in claim 1, wherein, when the message information collection unit collects multiple pieces of message information, the determination unit determines the map attribute based on words contained in two or more of the collected pieces of message information. The message information includes attribute information about a poster of the message information,
The determination unit further determines a user attribute indicating a user of the purpose-specific map to which the recorded data is mapped, for the recorded data, based on the attribute information included in the message information.
The information providing device according to claim 1 . 1. A computer-implemented method for providing information, comprising:
Collecting video recording data including video, date and time information indicating the date and time when the video was captured, and location information indicating the location where the video was captured;
Collecting message information posted on a social networking service and related to the video recording data based on the date and time information and the location information included in the video recording data;
determining a map attribute for the video recording data, the map attribute indicating a purpose-specific map to which the video recording data is mapped, based on words included in the message information related to the video recording data;
storing the recorded data, the message information related to the recorded data, and the map attribute of the recorded data in a storage unit in association with each other;
receiving a request for providing the recorded data, the request including the map attribute;
In response to the reception of the request, the recording data associated with the map attribute included in the request and the message information associated with the recording data are obtained from the storage unit, and are provided to a source of the request.
How to provide information, including: