JP2024111538A - Information processing device, information processing method, and information processing program - Google Patents

Abstract

To provide an information processing device for estimating a position of an entrance or an exit of an upper air shielding road, an information processing method and an information processing program.SOLUTION: An information processing device comprises: an acquisition section for acquiring vehicle travel information including position information relating to a travel position of a vehicle, time information relating to a time and speed information relating to a travel speed; a determination section for determining whether or not a travel speed of the vehicle at a travel starting point and a travel speed of the vehicle at a travel ending point are equal to or higher than a predetermined travel speed on the basis of the vehicle travel information acquired by the acquisition section; an identification section for identifying position information of the travel starting point based on the vehicle travel information if it is determined by the determination section that the travel speed is equal to or higher than the predetermined travel speed and position information of the travel ending point based on the vehicle travel information if it is determined by the determination section that the travel speed is equal to or higher than the predetermined travel speed; and an estimation section for estimating, as an exit and an entrance of an upper air shielding road, positions where the position information of the travel starting points and the position information of the travel ending points identified by the identification section regarding a plurality of vehicles are collected.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to an information processing device, an information processing method, and an information processing program.

Conventionally, there are navigation devices that provide route guidance. The navigation device described in Patent Document 1 performs map matching using a map and a current position acquired using GPS. In this case, the navigation device identifies the location of the vehicle by analyzing the captured image, and corrects the map matching results using the identified location of the vehicle. If the navigation device cannot determine the current location using GPS, it analyzes the image to acquire the installation positions and arrangement patterns of lighting, and estimates whether the vehicle is inside a tunnel or an underground passage.

JP 2013-200218 A

The technology described in Patent Document 1 requires images captured by a camera unit in order to estimate whether the vehicle is inside a tunnel or an underground passage.
However, when capturing images using a camera unit (vehicle-mounted camera) mounted on a vehicle, the position at the time of capturing images may not accurately match the position information acquired by the GPS. In other words, there may be an error in the position of the image captured by the vehicle-mounted camera, and the position may be unreliable.
In this case, there is a possibility that an error may occur in estimating whether the vehicle is inside a tunnel or an underground passage.

The present disclosure provides an information processing device, an information processing method, and an information processing program that estimate the location of an entrance or exit of a road with an obstructed view above.

An information processing device according to one embodiment includes an acquisition unit that acquires vehicle driving information including position information related to a vehicle's driving position, time information related to time, and speed information related to the driving speed; a determination unit that determines whether the driving speed at the vehicle's driving start point and the driving speed at the vehicle's driving end point are each equal to or higher than a predetermined driving speed based on the vehicle driving information acquired by the acquisition unit; an identification unit that identifies position information of the driving start point based on the vehicle driving information when the determination unit determines that the driving speed is equal to or higher than the predetermined driving speed, and position information of the driving end point based on the vehicle driving information when the determination unit determines that the driving speed is equal to or higher than the predetermined driving speed; and an estimation unit that estimates positions where the position information of the driving start point and the driving end point identified by the determination unit for a plurality of vehicles are gathered as the exit and entrance of an overhead shielded road.

According to one embodiment, the location of the entrance or exit of an overhead shielded passage can be estimated.

FIG. 1 is a diagram illustrating an information processing device according to an embodiment. FIG. 1 is a block diagram illustrating an information processing device according to an embodiment. This figure explains the overview of estimating the entrances and exits (entrances/exits) of an overhead shielded road with oncoming traffic. 1A is a diagram for explaining an overview of estimation of an entrance and an exit of a one-way traffic overhead shielded road, and FIG. 1B is a diagram for explaining estimation of an entrance of the overhead shielded road, and FIG. 1 is a flowchart illustrating an information processing method according to an embodiment.

One embodiment is described below.

[Overview of information processing device 100]
First, an overview of an information processing device 100 according to an embodiment will be described.
FIG. 1 is a diagram illustrating an information processing device 100 according to an embodiment.

The information processing device 100 may be configured, for example, as an estimation device that estimates the position of at least one of the entrance and exit of a road where the sky is blocked (sky-blocked road 400). The information processing device 100 may be configured, for example, as a registration device that registers the estimated position in a road map. The information processing device 100 may be configured, for example, as a guidance device that provides route guidance according to the estimated position. The information processing device 100 is not limited to the device of the above example, and may constitute various devices.
Here, examples of the overhead shielded passage 400 may be a tunnel, a box culvert, under a bridge, an underground parking lot, a multi-storey car park, etc.
The information processing device 100 may be a computer such as a server, a desktop, a laptop, a tablet, or a smartphone.

The information processing device 100 acquires vehicle driving information. The vehicle driving information may be, for example, CAN probe information. That is, the vehicle driving information may include position information related to the driving position of the vehicle 200, time information related to the time, and speed information related to the driving speed. The position information may be, for example, position information acquired in response to receiving a signal (GNSS signal) from a GNSS satellite 500 at the vehicle.

The information processing device 100 determines whether the travel speed at the travel start point of the vehicle 200 and the travel end point of the vehicle 200 are equal to or higher than a predetermined travel speed, based on the vehicle travel information. The travel start points A1 and B1 may be the start points of one or more trips T1 and T2 of a series of travel routes R when the vehicle 200 travels from the starting point S to the destination G. The travel end points A2 and B2 may be the end points of one or more trips T1 and T2 of a series of travel routes R when the vehicle 200 travels from the starting point S to the destination G.
For example, when there is a missing period of position information of a predetermined time or more based on the vehicle driving information in the above-mentioned example travel route R, the information processing device 100 may estimate different trips T1, T2 before and after the missing period. As a specific example, when there is one missing period of position information in a series of travel routes R of the same vehicle 200, the information processing device 100 may determine the trip immediately before the missing period as a first trip T1 and the trip immediately after the missing period as a second trip T2. Here, when there are multiple missing periods, the section between two missing periods may be determined as one trip.
The information processing device 100 determines whether the traveling speed of the vehicle 200 at the end point (first traveling end point A2) of the trip (first trip T1) immediately before the missing period and the start point (second traveling start point B1) of the trip (second trip T2) immediately after the missing period is greater than or equal to a predetermined traveling speed.
Furthermore, the information processing device 100 may determine whether the driving speed of the vehicle 200 at each of the starting point of the first trip T1 (first traveling start point A1) and the end point of the second trip T2 (second traveling end point B2) is greater than or equal to a predetermined driving speed.
Furthermore, the number of trips is not limited to two, but may be three or more.

When the information processing device 100 determines that the traveling speed of the vehicle 200 at the first traveling end point A2 is equal to or greater than a predetermined traveling speed as described above, the information processing device 100 identifies the position information of the first traveling end point A2 based on the vehicle traveling information. Similarly, when the information processing device 100 determines that the traveling speed of the vehicle 200 at the second traveling start point B1 is equal to or greater than a predetermined traveling speed, the information processing device 100 identifies the position information of the second traveling start point B1 based on the vehicle traveling information.

As described above, the information processing device 100 estimates that the position where the position information of the first driving end point A2 is collected is the entrance of the overhead shielded road 400. Similarly, the information processing device 100 estimates that the position where the position information of the second driving start point B1 is collected is the exit of the overhead shielded road 400.

[Details of information processing device 100]
Next, the information processing device 100 according to an embodiment will be described in detail.
FIG. 2 is a block diagram for explaining the information processing device 100 according to an embodiment.

The information processing device 100 includes, for example, a communication unit 121, a storage unit 122, a display unit 123, and a control unit 110. The communication unit 121, the storage unit 122, and the display unit 123 may be an embodiment of an output unit. The control unit 110 includes, for example, an acquisition unit 111, a determination unit 112, an identification unit 113, an estimation unit 114, a registration unit 115, and a route guidance unit 116. The control unit 110 may be configured, for example, by a calculation processing unit of the information processing device 100. The control unit 110 (for example, a calculation processing unit, etc.) may realize the functions of each unit (the acquisition unit 111, the determination unit 112, the identification unit 113, the estimation unit 114, the registration unit 115, and the route guidance unit 116, etc.) by, for example, appropriately reading and executing various programs, etc. stored in the storage unit 122, etc.

The communication unit 121 is, for example, a communication interface capable of transmitting and receiving various information to and from a device (external device) external to the information processing device 100. The external device may be, for example, a server 300 and a vehicle 200.

The storage unit 122 may store, for example, various information and programs. Examples of the storage unit 122 may be a memory, a solid state drive, a hard disk drive, etc. The storage unit 122 may be, for example, a storage area and a server on the cloud.

The display unit 123 is, for example, a display capable of displaying various characters, symbols, images, etc.

The acquisition unit 111 acquires vehicle driving information including position information related to the driving position of the vehicle 200, time information related to the time, and speed information related to the driving speed. The vehicle driving information may be, for example, CAN probe information, etc. The vehicle driving information may include, for example, a vehicle ID (identification information) that identifies the vehicle 200. The acquisition unit 111 may acquire the vehicle driving information from the vehicle 200 or a server, for example, via the communication unit 121. Alternatively, the acquisition unit 111 may acquire the vehicle driving information from an external memory in which the vehicle driving information is recorded, when the external memory is connected to an interface of the information processing device 100, for example.

Here, the vehicle 200 may acquire position information and time information, for example, using GNSS or the like. The vehicle 200 may also acquire speed information, for example, using various methods. The vehicle 200 transmits various pieces of information acquired by the vehicle 200, including, for example, position information, time information, and speed information, to the information processing device 100 or the server 300 as vehicle driving information.

The determination unit 112 determines, based on the vehicle travel information acquired by the acquisition unit 111, whether the travel speed of the vehicle 200 at the travel start point and the travel end point of the vehicle 200 are equal to or greater than a predetermined travel speed.
For example, when there is a missing period of position information of a predetermined time or more on the basis of vehicle travel information in a series of travel routes R generated by the same vehicle 200, the determination unit 112 may estimate that the trips before and after the missing period are different trips. Note that, for example, when there is one or more missing periods in a series of travel routes R from a starting point S to a destination G of the same vehicle 200, the determination unit 112 may divide the vehicle travel information into two or more trips T1, T2 and determine whether the travel speed of the vehicle 200 is a predetermined value or more at the start point (upstream side in the traveling direction of the vehicle 200 (travel start point A1, B1)) and the end point (downstream side in the traveling direction of the vehicle 200 (travel end point A2, B2)) of each trip T1, T2.
That is, the determination unit 112 determines whether the traveling speed of the vehicle 200 at the start point (travel start points A1, B1) of each trip T1, T2 based on the series of travel routes R of the same vehicle 200 is equal to or higher than a predetermined traveling speed. Also, the determination unit 112 determines whether the traveling speed of the vehicle 200 at the end point (travel end points A2, B2) of each trip T1, T2 based on the series of travel routes R of the same vehicle 200 is equal to or higher than a predetermined traveling speed, or is equal to or higher than a predetermined first traveling speed and lower than a predetermined second traveling speed (within a predetermined traveling speed range).

The predetermined traveling speed may be various traveling speeds including, for example, 20 km, 30 km, 40 km, 50 km, 60 km, 80 km, 100 km, etc. The predetermined traveling speed may be, for example, the traveling speed of the vehicle 200 passing through a traffic jam, the traveling speed (0 km) of the vehicle 200 when stopped, and a speed that excludes relatively high traveling speeds at which the positional deviation of the GNSS becomes relatively large.
The predetermined time may be various times including, for example, 5 seconds, 10 seconds, 15 seconds, 20 seconds, 30 seconds, etc. The predetermined time may be determined according to the time that the vehicle 200 is considered to have traveled through the sky shielded road 400, depending on, for example, the length of the sky shielded road 400 and the traveling speed of the vehicle 200.

The identification unit 113 identifies position information of a travel start point B1 based on the vehicle travel information when the determination unit 112 determines that the travel speed is equal to or greater than the predetermined travel speed, and position information of a travel end point A2 based on the vehicle travel information when the determination unit 112 determines that the travel speed is equal to or greater than the predetermined travel speed. Here, when there is a missing period of position information of a predetermined time or more based on a series of vehicle travel information generated by the same vehicle 200, the identification unit 113 may estimate that the trips before and after the missing period are different trips T1 and T2, and identify position information based on the vehicle travel information corresponding to each trip T1 and T2.
The identification unit 113 identifies position information of a travel start point at which the determination unit 112 determines that the travel speed of the vehicle 200 is equal to or higher than a predetermined travel speed. The identification unit 113 also identifies position information of a travel end point at which the determination unit 112 determines that the travel speed of the vehicle 200 is equal to or higher than a predetermined travel speed.
The predetermined running speed may be the same as the "predetermined running speed" described above in the "determination unit 112". The predetermined time may be the same as the "predetermined time" described above in the "determination unit 112".

The identification unit 113 may, for example, associate and identify the location information of the travel end point (first travel end point A2) of the trip (first trip T1) immediately before the period in which location information is missing with the location information of the travel start point (second travel start point B1) of the trip (second trip T2) immediately after the period in which location information is missing.

The control unit 110 (determination unit 112) may determine, based on each of the multiple vehicles 200 (multiple vehicle driving information), whether the driving speed of the same vehicle 200 at the driving start points A1, B1 and the driving speed of the same vehicle 200 at the driving end points A2, B2 are each equal to or greater than a predetermined driving speed.
The control unit 110 (identification unit 113) may identify position information of a driving start point B1 based on the vehicle driving information of the same vehicle 200 when the judgment unit 112 judges that the driving speed of the vehicle 200 is equal to or greater than a predetermined driving speed, and position information of a driving end point A2 based on the vehicle driving information of the vehicle 200.

The estimation unit 114 estimates the positions where the position information of the driving start point B1 and the driving end point A2 identified by the identification unit 113 for multiple vehicles 200 are gathered as the exit and entrance of the overhead shielded road 400. Here, the estimation unit 114 may estimate the exit and entrance of a tunnel, a box culvert, under a bridge, an underground parking lot, and a multi-story parking lot as the overhead shielded road 400.

The estimation unit 114 may estimate the entrance of the sky shielded road 400 according to the position information of the driving end point A2 based on the trip T1 immediately before the missing period, and may estimate the exit of the sky shielded road 400 according to the position information of the driving start point B1 based on the trip T2 immediately after the missing period. That is, the estimation unit 114, for example, estimates the position where the position information of the driving end point (first driving end point A2) in the trip (first trip T1) immediately before the missing period of position information is collected as the entrance of the sky shielded road 400. Also, the estimation unit 114, for example, estimates the position where the position information of the driving start point (second driving start point B1) in the trip (second trip T2) immediately after the missing period of position information is collected as the exit of the sky shielded road 400.

When the estimation unit 114 estimates the entrance and exit of the sky shielded road 400 based on the location information immediately before the period in which location information is missing and the location information immediately after the period in which location information is missing, the estimation unit 114 may estimate that the part of the period in which location information is missing that is between the entrance and the exit is the sky shielded road 400.

In addition, for example, when the identification unit 113, as described above, associates the location information of the first driving end point A2 of the first trip T1, which is immediately before the period in which location information is missing, with the location information of the second driving start point B1 of the second trip T2, which is immediately after the period in which location information is missing, the estimation unit 114 may estimate the entrance and exit of the overhead shielded road 400 by associating them.

FIG. 3 is a diagram for explaining an overview of estimation of the entrance and exit (entrance/exit) of an overhead shielded road 400 for oncoming traffic.
4A and 4B are diagrams for explaining an overview of estimating the entrance and exit of a one-way traffic overhead shielded road 400. Fig. 4A is a diagram for explaining estimation of the entrance of the overhead shielded road 400, and Fig. 4B is a diagram for explaining estimation of the exit of the overhead shielded road 400.

For example, as illustrated in Figure 3, when the overhead shielded road 400 is a two-way traffic road, the estimation unit 114 may estimate that a position 603 (for example, a position halfway (approximately halfway)) between a position 601 where position information of the start point of the journey is collected and a position 602 where position information of the end point of the journey is collected is the exit and entrance (entrance/exit 410) of the overhead shielded road 400.
As an example, the estimation unit 114 may estimate that traffic is on the opposite side when the distance between the area (601) where position information of the start point of the journey is collected and the area (602) where position information of the end point of the journey is collected is less than a predetermined distance.
For example, the vehicle 200 cannot obtain location information immediately after leaving the exit of the sky shielded road 400, but can obtain location information approximately several seconds after leaving the exit. Similarly, the vehicle 200 may record location information inside the sky shielded road 400 after passing through the entrance of the sky shielded road 400, based on the GNSS signal that it had received until just before the entrance.
Therefore, when the overhead shielded road 400 is a two-way road, the distance between the area (601) where position information of the start point of the journey is collected and the area (602) where position information of the end point of the journey is collected is less than a predetermined distance, so the estimation unit 114 may estimate the entrance/exit 410 of the overhead shielded road 400 based on the characteristics of the distance between these multiple areas.

The location 601 where the location information of the starting point of the journey is collected may be various locations, including, for example, the center of an area where multiple pieces of location information are collected, the center of gravity, the location information closest to the exit (410) of the overhead shielded road 400 (the starting point (position) that is the most upstream in the traveling direction of the vehicle 200 among the corresponding trips of the multiple vehicles 200), and the location information farthest from the exit (410) of the overhead shielded road 400 (the starting point (position) that is the most downstream in the traveling direction of the vehicle 200 among the corresponding trips of the multiple vehicles 200).

Similarly, the location 602 where the location information of the end point of the trip is collected may be various locations including, for example, the center of an area where multiple location information is collected, the center of gravity, the location information closest to the entrance (410) of the overhead shielded road 400 (the end point (position) that is the most upstream in the direction of travel of the vehicle 200 among the trips corresponding to the multiple vehicles 200), and the location information farthest from the entrance (410) of the overhead shielded road 400 (the end point (position) that is the most downstream in the direction of travel of the vehicle 200 among the trips corresponding to the multiple vehicles 200).

The position 603 between the position 601 where the position information of the travel start point is collected and the position 602 where the position information of the travel end point is collected may be various positions, including, for example, a midpoint between the position 601 where the position information of the travel start point is collected and the position 602 where the position information of the travel end point is collected.

For example, as illustrated in FIG. 4, when the overhead shielded road 400 is a one-way road, the estimation unit 114 may estimate positions 614 and 613 upstream of the position 612 where position information of the start point of travel is collected and the position 611 where position information of the end point of travel is collected, respectively, in the traveling direction D of the vehicle 200, as the exit 422 and the entrance 421 of the overhead shielded road 400.

As described above, the vehicle 200 may record position information inside the sky shielded road 400 after passing through the entrance 421 of the sky shielded road 400, based on the GNSS signal that was received until just before the vehicle 200 reached the entrance 421. Therefore, the estimation unit 114 may estimate that the entrance 421 of the sky shielded road 400 is a position 613 upstream of the position 611 where the position information of the end of the journey is collected, in the traveling direction D of the vehicle 200, as shown in FIG. 4(A).

Similarly, as described above, the vehicle 200 cannot obtain position information immediately after leaving the exit 422 of the overhead shielded road 400, for example, but can obtain position information approximately several seconds after leaving the exit 422. Therefore, the estimation unit 114 may estimate that the exit 422 of the overhead shielded road 400 is a position 614 upstream of the position 612 where the position information of the starting point of travel is collected, in the traveling direction D of the vehicle 200, as shown in FIG. 4(B) as an example.

The estimation unit 114 may, for example, estimate positions 614, 613 a predetermined distance upstream from a position 612 where position information of the start point of driving is collected and a position 611 where position information of the end point of driving is collected, as the exit 422 and entrance 421 of the overhead shielded road 400.
The predetermined distance in this case may be, for example, any distance set in advance, or may be a distance set in advance that takes into account errors that may occur when acquiring location information using GNSS.
Alternatively, the predetermined distance may be a distance based on, for example, the running speed (speed information) included in the vehicle running information and a preset time. The running speed in this case may be, for example, the running speed at the running start point and the running end point based on the vehicle running information of one vehicle 200 or the vehicle running information of multiple vehicles 200. The running speed may also be, for example, an average running speed at the running start point and an average running speed at the running end point, which are obtained by averaging the running speeds at the running start point and the running end point, respectively, based on the vehicle running information of multiple vehicles 200. The preset time in this case may also be, for example, a time based on a time error when receiving a GNSS signal and recording position information.

The registration unit 115 may, for example, register the entrances and exits (entrances (location information) and exits (location information)) of the sky shielded road 400 estimated by the estimation unit 114 in a road map. The registration unit 115 may, for example, store map information related to the road map in the memory unit 122.

The route guidance unit 116 may provide route guidance using, for example, at least one of the entrances and exits (entrances (location information) and exits (location information)) of the sky shielded road 400 estimated by the estimation unit 114 and map information in which the entrances and exits (entrances and exits) are registered by the registration unit 115.

Here, the route guidance unit 116 may be disposed in the control unit 110 of the information processing device 100, or may be disposed in a navigation device (not shown) mounted on the vehicle 200, or the like.
When the route guidance unit 116 is arranged in a navigation device of the vehicle 200, the entrances and exits of the overhead shielded road 400 estimated by the estimation unit 114 and the map information in which the entrances and exits are registered by the registration unit 115 may be stored in the navigation device.

For example, when the route guidance unit 116 is disposed in the control unit 110 of the information processing device 100, the route guidance unit 116 may provide route guidance information to a terminal (not shown) external to the information processing device 100 via the communication unit 121. The terminal may be a user terminal used by a user who uses the route guidance. The terminal may be a mobile terminal such as a laptop, tablet, or smartphone, or a stationary terminal such as a desktop.
The route guidance unit 116 may, for example, display guidance images and the like during route guidance on the display unit 123, or on a display unit (not shown) of a navigation device, a display unit (not shown) of a terminal, etc.

As described above, examples of the information processing device 100 include a server, a desktop, a laptop, a tablet, and a smartphone. However, the information processing device 100 is not limited to these examples, and may be mounted on a vehicle 200, and may cooperate with a navigation device mounted on the vehicle 200.

[Information processing method]
Next, an information processing method according to an embodiment will be described.
FIG. 5 is a flowchart illustrating an information processing method according to an embodiment.

In step ST101, the acquisition unit 111 acquires vehicle driving information including position information related to the driving position of the vehicle 200, time information related to the time, and speed information related to the driving speed.

In step ST102, the determination unit 112 determines whether the driving speed of the vehicle 200 at the driving start point and the driving speed of the vehicle 200 at the driving end point are equal to or greater than a predetermined driving speed, based on the vehicle driving information acquired in step ST101.

In step ST103, the identification unit 113 identifies the position information of the travel start point based on the vehicle travel information when it is determined in step ST102 that the travel speed is equal to or greater than the predetermined travel speed, and the position information of the travel end point based on the vehicle travel information when it is determined in step ST102 that the travel speed is equal to or greater than the predetermined travel speed. Here, when there is a period of missing position information of a predetermined time or more based on a series of vehicle travel information generated by the same vehicle 200, the identification unit 113 may estimate that the trips before and after the missing period are different trips, and identify the position information based on the vehicle travel information corresponding to each trip.

In step ST104, the estimation unit 114 estimates the positions where the position information of the travel start point and the position information of the travel end point identified in step ST103 for the multiple vehicles 200 are collected as the exit and entrance of the overhead shielded road 400. Here, the estimation unit 114 may estimate the exit and entrance of a tunnel, a box culvert, under a bridge, an underground parking lot, and a multi-story parking lot as the overhead shielded road 400.
The estimation unit 114 may estimate the entrance of the overhead shielded road 400 based on location information of the end point of travel based on the trip immediately before the missing period, and may also estimate the exit of the overhead shielded road 400 based on location information of the start point of travel based on the trip immediately after the missing period.
For example, when the overhead shielded road 400 is a two-way traffic road, the estimation unit 114 may estimate that the positions between the position information of the start point of driving and the position information of the end point of driving are the exit and entrance (entrance/exit) of the overhead shielded road 400.
For example, when the overhead shielded road 400 is a one-way road, the estimation unit 114 may estimate that the positions upstream of the position where the position information of the start point of the journey is collected and the position where the position information of the end point of the journey is collected are the exit and entrance of the overhead shielded road 400.

[Example]
Next, an example of this embodiment will be described.
In this embodiment, a tunnel will be described as an example of the sky shield passage 400.

When the information processing device 100 determines that the position information (such as coordinates using GNSS) of the vehicle 200's starting point or end point of travel is concentrated in a predetermined range and that the vehicle 200 is traveling within a predetermined travel speed range, it estimates that the position based on the position information is the entrance/exit of a tunnel.
The main processing contents of the control unit 110 and the like will be described below.

The control unit 110 (e.g., the acquisition unit 111, etc.) acquires a relatively large amount of CAN probe information (vehicle driving information). The CAN probe information is data in which driving information from a sensor and position coordinates (GNSS coordinates) using GNSS for each vehicle 200 are recorded (output) at intervals of approximately 1 second. The CAN probe information in this embodiment includes information such as the vehicle ID (VIN: Vehicle Identification Number), GNSS coordinates (latitude and longitude), vehicle speed, and recording time.

The control unit 110 (e.g., the determination unit 112, etc.) divides the CAN probe information for each vehicle ID recorded in the CAN probe information and performs trip grouping. Even if the CAN probe information has the same vehicle ID, if the interval between recording times in the CAN probe information is greater than a predetermined time (for example, 10 seconds), the control unit 110 (e.g., the determination unit 112, etc.) determines that the CAN probe information belongs to different trips.

If poor reception occurs in the GNSS signals recorded in the CAN probe information, the signals will be missing and the trip will be interrupted. If the trip is interrupted, it is highly likely that the vehicle 200 is traveling inside a tunnel. When the vehicle 200 enters a tunnel, and when the vehicle 200 exits a tunnel, the trip will end or start at a constant traveling speed. Therefore, the control unit 110 can extract the positions (e.g., GNSS coordinates) of the first and last records of trips with a constant speed (predetermined traveling speed) for multiple trips, and identify a point where they are concentrated, thereby estimating that point to be the entrance or exit of the tunnel.
The estimation of the tunnel entrance/exit will be explained below.

The control unit 110 (e.g., the determination unit 112, etc.) extracts the first record of the trip (the CAN probe information with the earliest driving time zone) and the last record of the trip (the CAN probe information with the latest driving time zone). Here, if poor reception of the GNSS signal occurs while the vehicle 200 is driving, the trip is interrupted, and the trip starts when poor reception of the GNSS signal no longer occurs (recovers).

The control unit 110 (e.g., the determination unit 112, etc.) uses the speed information (vehicle speed information) included in the CAN probe information to identify the first record and the last record of a trip in which the vehicle is traveling at a predetermined driving speed (for example, 30 km/h, etc.) or higher (or within a predetermined driving speed range). Here, by limiting the vehicle speed, it becomes possible to exclude the position information of the vehicle 200 in a traffic jam or parked in a parking lot, etc. In addition, it becomes possible to exclude the position information of the vehicle 200 traveling too fast compared to other vehicles, because the deviation in the position using GNSS becomes large.

The control unit 110 (e.g., the identification unit 113) identifies the location information (CAN probe information) that is the first record and the last record of the extracted trip (after the above-mentioned identification). The control unit 110 (e.g., the identification unit 113, etc.) identifies the location where the location information (CAN probe information) is concentrated.

The control unit 110 (e.g., the estimation unit 114, etc.) estimates the entrance/exit of the tunnel based on the position information (a position where the position information is dense) identified as described above. Here, the control unit 110 (e.g., the estimation unit 114, etc.) may use CAN probe information from multiple vehicles 200 to collect positions estimated to be the entrance/exit of the tunnel, thereby improving the accuracy of identifying the positions.

The control unit 110 (for example, the estimation unit 114, etc.) can correct the positional deviation of the entrance and exit of the tunnel.
Generally, the vehicle 200 records position information using GNSS signals at intervals of about one second. Therefore, when exiting a tunnel, the position information is likely to shift to the outside of the tunnel (position deviation 1). Also, since the vehicle 200 can receive GNSS signals immediately after entering the tunnel, the position information is likely to shift to the inside of the tunnel when entering the tunnel (position deviation 2).
Therefore, the control unit 110 (e.g., the estimation unit 114, etc.) corrects the position instead of estimating that the central position or the like where the positions based on the position information are concentrated is the entrance/exit of the tunnel. That is, in the case of a tunnel with two-way traffic, the control unit 110 (e.g., the estimation unit 114, etc.) corrects the position to a position between position deviation 1 and position deviation 2. In addition, in the case of a tunnel with one-way traffic, the control unit 110 (e.g., the estimation unit 114, etc.) corrects both position deviation 1 and position deviation 2 to the upstream (nearby) side with respect to the traveling direction of the vehicle 200.

In other words, the control unit 110 (e.g., the estimation unit 114, etc.) records position information (GNSS coordinates) for about 1 to 2 seconds after entering a tunnel, but does not record position information (GNSS coordinates) for about 1 to 2 seconds after exiting the tunnel, so the first and last records of a trip tend to be concentrated in positions that are shifted from the actual tunnel entrance/exit positions. In a tunnel with two-way traffic, it is possible to correct the position shift by identifying the points where the first and last records are concentrated and setting the points in between as the tunnel entrance/exit.

In summary, the information processing device 100 estimates the entrance and exit of a tunnel by using CAN probe information when GNSS signal reception is poor. Furthermore, the information processing device 100 is not limited to the example of simply estimating the entrance and exit of a tunnel from the central position where positions based on position information are concentrated, but performs position correction by distinguishing between entering and exiting a tunnel.

[Functions and circuits]
Next, the functions and circuits of the information processing device 100 will be described.
Each unit of the information processing device 100 may be realized as a function of a computer's arithmetic processing device, etc. That is, the acquisition unit 111, determination unit 112, identification unit 113, estimation unit 114, registration unit 115, and route guidance unit 116 (control unit 110) of the information processing device 100 may be realized as an acquisition function, a determination function, an identification function, an estimation function, a registration function, and a route guidance function (control function), respectively, by the computer's arithmetic processing device, etc.
The information processing program can cause a computer to realize each of the above-mentioned functions. The information processing program may be recorded in a non-transitory computer-readable recording medium, such as a memory, a solid-state drive, a hard disk drive, or an optical disk. The recording medium may be referred to as a non-transitory computer-readable medium, for example.
As described above, each unit of the information processing device 100 may be realized by a processing unit of a computer or the like. The processing unit or the like is configured by, for example, an integrated circuit or the like. Therefore, each unit of the information processing device 100 may be realized as a circuit constituting the processing unit or the like. That is, the acquisition unit 111, the determination unit 112, the identification unit 113, the estimation unit 114, the registration unit 115, and the route guidance unit 116 (control unit 110) of the information processing device 100 may be realized as an acquisition circuit, a determination circuit, an identification circuit, an estimation circuit, a registration circuit, and a route guidance circuit (control circuit) constituting the processing unit or the like of a computer.
The communication unit 121, the storage unit 122, and the display unit 123 (output unit) of the information processing device 100 may be realized as a communication function, a storage function, and a display function (output function) including the functions of an arithmetic processing device, etc. The communication unit 121, the storage unit 122, and the display unit 123 (output unit) of the information processing device 100 may be realized as a communication circuit, a storage circuit, and a display circuit (output circuit) by being configured, for example, by an integrated circuit, etc. The communication unit 121, the storage unit 122, and the display unit 123 (output unit) of the information processing device 100 may be realized as a communication device, a storage device, and a display device (output device) by being configured, for example, by being configured by a plurality of devices.

The information processing device 100 can combine one or any two or more of the above-mentioned units.
In this disclosure, the term "information" is used, but the term "information" can be replaced with "data" and the term "data" can be replaced with "information."

[Aspects and Effects of the Present Embodiment]
Next, one aspect of this embodiment and the effects of each aspect will be described. Note that each aspect described below is an example at the time of filing, and this embodiment is not limited to the aspects described below. In other words, this embodiment is not limited to the aspects described below, and may be realized by appropriately combining each of the above-mentioned parts. In addition, a lower aspect may be able to cite any of the higher aspects.
In addition, the effects described below are merely examples, and the effects of each aspect are not limited to those described below. In addition, each aspect may, for example, exhibit at least one of the effects described below.

(Aspect 1)
An information processing device of one embodiment includes an acquisition unit that acquires vehicle driving information including position information regarding the vehicle's driving position, time information regarding the time, and speed information regarding the driving speed, a determination unit that determines whether the driving speed at the vehicle's driving start point and the driving speed at the vehicle's driving end point are each equal to or higher than a predetermined driving speed based on the vehicle driving information acquired by the acquisition unit, an identification unit that identifies position information of the driving start point based on the vehicle driving information when the determination unit determines that the driving speed is equal to or higher than the predetermined driving speed, and position information of the driving end point based on the vehicle driving information when the determination unit determines that the driving speed is equal to or higher than the predetermined driving speed, and an estimation unit that estimates positions where the position information of the driving start point and the driving end point identified by the determination unit for a plurality of vehicles are gathered as the exit and entrance of an overhead shielded road.
This allows the information processing device to estimate the entrances and exits of overhead shielded roads based on vehicle driving information, thereby reducing errors in the entrances and exits (positions) compared to when using an on-board camera to estimate tunnels, etc.
The information processing device may also use, for example, vehicle travel information of vehicles that typically travel. Even if a new overhead shielded road is opened, a vehicle that typically travels is likely to pass through the newly opened overhead shielded road relatively early. Therefore, the information processing device can estimate the entrance/exit (position) of the newly opened overhead shielded road relatively early, and can improve services for users, such as providing road maps with registered entrances and route guidance.
In addition, as an example of a case where the information processing device performs route guidance using the estimated entrance and exit of the sky shielded road, the information processing device can warn that there is an entrance and an exit upstream of the entrance and exit of the sky shielded road in the traveling direction of the vehicle. That is, the information processing device can warn in advance about the possibility of a hindrance to driving the vehicle, such as a sudden change in road surface conditions between the outside and inside of the sky shielded road, or a crosswind when going out from the sky shielded road. In addition, the information processing device can warn in advance about the possibility of an accident occurring because it takes time to ensure visibility due to a sudden change in the surrounding brightness between the outside and inside of the sky shielded road. Therefore, the information processing device can reduce the possibility of a vehicle accident or the like occurring.

(Aspect 2)
In one embodiment of an information processing device, the estimation unit may estimate that when the overhead obstructed road is a two-way road, the positions between the position information for the start point of driving and the position information for the end point of driving are the exit and entrance of the overhead obstructed road.
Thereby, the information processing device can correct the positions of the exit and the entrance even if a position shift occurs when acquiring position information using, for example, GNSS, etc. In other words, the information processing device can identify the exact positions of the exit and the entrance.

(Aspect 3)
In one embodiment of an information processing device, when the overhead shielded road is a one-way road, the estimation unit may estimate that positions upstream in the vehicle's direction of travel from the position where position information for the start point of travel is collected and the position where position information for the end point of travel is collected are the exit and entrance of the overhead shielded road.
Thereby, the information processing device can correct the positions of the exit and the entrance even if a position shift occurs when acquiring position information using, for example, GNSS, etc. In other words, the information processing device can identify the exact positions of the exit and the entrance.

(Aspect 4)
In one embodiment of an information processing device, when there is a period of missing location information of a predetermined time or longer based on a series of vehicle driving information generated by the same vehicle, the identification unit may estimate that the trips before and after the missing period are different trips, and identify the location information based on the vehicle driving information corresponding to each trip.
This allows the information processing device to estimate that there is an obstructed road above when there is a period of missing position information based on predetermined conditions.

(Aspect 5)
In one embodiment of an information processing device, the estimation unit may estimate the entrance of an overhead obstructed road based on location information of the end point of a trip based on the trip immediately before the missing period, and may also estimate the exit of the overhead obstructed road based on location information of the start point of a trip based on the trip immediately after the missing period.
This allows the information processing device to estimate the entrance and exit of the sky shielded road immediately before and after a period in which location information is unavailable based on specified conditions.

(Aspect 6)
In one aspect of the information processing device, the estimation unit may estimate each of the exits and entrances of a tunnel, a box culvert, an underbridge, an underground parking lot, and a multi-story parking lot as the overhead obstructed passage.
This enables the information processing device to estimate the positions of the exit and entrance of the specific example of the overhead shielded road described above.

(Aspect 7)
In one aspect of the information processing method, a computer executes the following steps: an acquisition step in which the computer acquires vehicle driving information including position information regarding the vehicle's driving position, time information regarding the time, and speed information regarding the driving speed; a determination step in which the computer determines whether the driving speed at the vehicle's driving start point and the driving speed at the vehicle's driving end point are each equal to or higher than a predetermined driving speed based on the vehicle driving information acquired by the acquisition step; an identification step in which the computer identifies position information of the driving start point based on the vehicle driving information when the determination step determines that the driving speed is equal to or higher than the predetermined driving speed, and position information of the driving end point based on the vehicle driving information when the determination step determines that the driving speed is equal to or higher than the predetermined driving speed; and an estimation step in which the positions where the position information of the driving start point and the driving end point identified by the determination step for a plurality of vehicles are gathered are estimated to be the exit and entrance of an overhead shielded road.
The information processing method can achieve the same effects as the information processing device according to the above-described embodiment.

(Aspect 8)
An information processing program of one embodiment provides a computer with the following functions: an acquisition function for acquiring vehicle driving information including position information related to a vehicle's driving position, time information related to time, and speed information related to the driving speed; a determination function for determining whether the driving speed at a vehicle's driving start point and the driving speed at a vehicle's driving end point are each equal to or higher than a predetermined driving speed based on the vehicle driving information acquired by the acquisition function; an identification function for identifying position information of the driving start point based on the vehicle driving information when the determination function determines that the driving speed is equal to or higher than the predetermined driving speed, and position information of the driving end point based on the vehicle driving information when the determination function determines that the driving speed is equal to or higher than the predetermined driving speed; and an estimation function for estimating positions where the position information of the driving start points and the position information of the driving end points identified by the identification function for a plurality of vehicles are gathered, as the exit and entrance of an overhead shielded road.
Make this a reality.
The information processing program can achieve the same effects as the information processing device according to the above aspect.

REFERENCE SIGNS LIST 100 Information processing device 110 Control unit 111 Acquisition unit 112 Determination unit 113 Identification unit 114 Estimation unit 115 Registration unit 116 Route guidance unit 121 Communication unit 122 Storage unit 123 Display unit 400 Sky shielded road

Claims (8)

an acquisition unit that acquires vehicle driving information including position information related to a driving position of the vehicle, time information related to a time, and speed information related to a driving speed;
a determination unit that determines whether a travel speed at a travel start point of the vehicle and a travel speed at a travel end point of the vehicle are equal to or greater than a predetermined travel speed based on the vehicle travel information acquired by the acquisition unit;
an identification unit that identifies position information of the travel start point based on the vehicle travel information when the determination unit determines that the travel speed is equal to or higher than a predetermined travel speed, and position information of the travel end point based on the vehicle travel information when the determination unit determines that the travel speed is equal to or higher than a predetermined travel speed;
an estimation unit that estimates positions where the position information of the travel start point and the position information of the travel end point identified by the identification unit for a plurality of vehicles are collected as an exit and an entrance of an overhead shielded road;
An information processing device comprising: The information processing device according to claim 1 , wherein the estimation unit estimates positions between a position where position information of a start point of driving is collected and a position where position information of an end point of driving is collected as the exit and entrance of the overhead obstructed road when the overhead obstructed road is a two-way traffic. The information processing device described in claim 1, wherein the estimation unit estimates that when the overhead obstructed road is a one-way road, positions upstream in the vehicle's travel direction from the position where position information for the start point of travel is collected and the position where position information for the end point of travel is collected are the exit and entrance of the overhead obstructed road. The information processing device according to any one of claims 1 to 3, wherein, when there is a period of missing location information of a predetermined time or longer based on a series of vehicle driving information generated by the same vehicle, the identification unit estimates that the trips before and after the missing period are different trips, and identifies the location information based on the vehicle driving information corresponding to each trip. The information processing device according to claim 4, wherein the estimation unit estimates the entrance of an overhead obstructed road based on location information of the end point of a trip based on a trip immediately before the missing period, and estimates the exit of the overhead obstructed road based on location information of the start point of a trip based on a trip immediately after the missing period. The information processing device according to claim 5 , wherein the estimation unit estimates each of an exit and an entrance of a tunnel, a box culvert, an underbridge, an underground parking lot, and a multi-story parking lot as the overhead obstructed passage. The computer
an acquiring step of acquiring vehicle driving information including position information related to a driving position of the vehicle, time information related to a time, and speed information related to a driving speed;
a determination step of determining whether a traveling speed at a traveling start point of the vehicle and a traveling speed at a traveling end point of the vehicle are equal to or higher than a predetermined traveling speed based on the vehicle traveling information acquired in the acquisition step;
a determination step of determining position information of the travel start point based on the vehicle travel information when the determination step determines that the travel speed is equal to or higher than a predetermined travel speed, and determining position information of the travel end point based on the vehicle travel information when the determination step determines that the travel speed is equal to or higher than a predetermined travel speed;
an estimation step of estimating positions where the position information of the travel start point and the position information of the travel end point identified by the identification step for a plurality of vehicles are collected as an exit and an entrance of an overhead shielded road;
An information processing method for performing the above. On the computer,
An acquisition function for acquiring vehicle driving information including position information related to a driving position of the vehicle, time information related to a time, and speed information related to a driving speed of the vehicle;
a determination function that determines whether a running speed at a running start point of the vehicle and a running speed at a running end point of the vehicle are equal to or higher than a predetermined running speed based on the vehicle running information acquired by the acquisition function;
a determination function for determining position information of the travel start point based on the vehicle travel information when the determination function determines that the travel speed is equal to or higher than a predetermined travel speed, and a determination function for determining position information of the travel end point based on the vehicle travel information when the determination function determines that the travel speed is equal to or higher than a predetermined travel speed;
an estimation function that estimates positions where the position information of the travel start point and the position information of the travel end point identified by the identification function for a plurality of vehicles are collected as the exit and entrance of an overhead shielded road;
An information processing program that realizes this.

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