Map information creation device and map information creation method

Abstract

The present invention easily links facility information to a parking lot polygon included in map information.　A map information creation device 1 comprises: a map information storage unit 122 that stores, as facility information about a plurality of facilities, map information including center position information of each facility, and a plurality of pieces of parking lot polygon information; and a parking lot determination unit 113 that determines a parking lot having the parking lot polygon information, as a parking lot of the facility information having the center position information for which the distance from one node of the parking lot polygon information is the closest.

Description

Technical Field

[0001] The present invention relates to a map information creation apparatus and a map information creation method for easily associating a parking lot polygon included in map information with facility information.

Background Art

[0002] The use of receiving Floating Car Data (FCD) including GPS position information from a plurality of vehicles by a server, accumulating the received position information, etc., and utilizing the accumulated data for data analysis regarding facilities visited by vehicles has been expanding. Also, as described in Patent Document 2, continuous position information from a plurality of vehicles is received together with time information, and when there is no change in the position information for a predetermined time or more, it is determined that the vehicle has parked, and a vehicle parking position information table that records the position information as the parking position of the vehicle and includes the parking time including date and time information is created. Here, the vehicle parking position information table refers to a table that stores vehicle parking information including at least parking position information, parking date and time information, and parking time collected within a predetermined area (for example, a prefecture, a municipality, etc.) and within a predetermined period (for example, one year, etc.). Here, the parking position information is defined as the position information of the vehicle when there is no change in the position information of the vehicle for a predetermined time or more. The vehicle parking position information table is created based on a position information database (not shown) including movement transition information created using FCD (Floating Car Data) including a vehicle ID, position information, time information, etc., which is received from, for example, a connected car. Regarding the creation of the vehicle parking position information table, it is a well-known technique for those skilled in the art as described in Patent Document 2, for example. Note that from the perspective of personal information protection, the vehicle parking position information table can be made to not include the vehicle ID. Based on the position information of the vehicle, in order to correctly grasp that the vehicle user has visited, for example, a facility adjacent to a parking lot, it is necessary that the section information of the parking lot on the map and that the parking lot corresponding to the parking lot is correctly registered as the parking lot of the facility. Parking spaces are registered as polygons in the map layer, and this polygon information can also be registered by external companies. Furthermore, some parking polygons are already registered in existing OSM (Open Street Map). However, it is often unclear whether each parking polygon represents a parking space attached to a facility for facility users or a monthly-rental parking space for individuals. Moreover, even in the case of facility-attached parking spaces, it is often not clear which facility the parking space belongs to, as the facility information is not linked to the parking grid. For example, Patent Document 1 discloses a technique that divides map information into multiple mesh areas, and within each mesh area, areas where a vehicle has parked multiple times are designated as areas to be determined. This technique determines that a mesh area where a specific vehicle is parked is a home parking lot, and a mesh area where an unspecified number of vehicles are parked is a facility parking lot. However, while the technique described in Patent Document 1 discloses associating facilities close to the latitude and longitude of the area of ​​the facility determined to be a facility parking lot with that facility, if there are multiple facilities, it only assigns a parking lot attribute and does not go so far as to identify a specific facility. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] WO2019-065328 [Patent Document 2] Japanese Patent Publication No. 2020-144587 [Overview of the project] [Problems that the invention aims to solve]

[0004] To enable analysis of visitors to facilities through big data analysis of FCDs acquired from vehicles, there is a need for a map information creation device and method that can easily link parking polygons included in map information with facility information.

[0005] This invention has been made in view of the above problems, and aims to provide a map information creation device and a map information creation method that can easily link parking polygons included in map information with facility information for facilities that have central location information that is close in distance from one node of parking polygon information. [Means for solving the problem]

[0006] (1) The map information creation device of the present invention (for example, the map information creation device 1 described later) A map information storage unit (for example, the map information storage unit 122 described later) stores map information including the central location information of multiple facilities as facility information, and information on multiple parking polygons. A parking lot determination unit (for example, the parking lot determination unit 113 described later) determines that a parking lot having the aforementioned parking lot polygon information is the parking lot of the facility information having the closest central position information from one node of the aforementioned parking lot polygon information, It is equipped with.

[0007] According to (1) above, for facilities with central location information that is close in distance from one node of the parking polygon information, it becomes possible to create a map that easily links the parking polygons included in the map information with the facility information.

[0008] (2) The map information creation device described in (1) above (for example, the map information creation device 1 described later) is provided with scale information indicating the size of the facility as facility information, The system includes a parking area information table (for example, the facility parking area information table 123 described later) that shows the correspondence between the area or range of area as a measure of the facility's size and the standard parking area or range of parking area expected for a facility of that size. The system includes a facility extraction unit (for example, a facility extraction unit 112 described later) that extracts facility information having center position information such that the distance from one node of the parking polygon information is less than or equal to a predetermined distance, The aforementioned parking lot determination unit (for example, the parking lot determination unit 113 described later) If the facility extraction unit extracts two or more pieces of facility information, the system may determine that a parking lot with parking polygon information has facility information that is close in size to the facility size information associated with the area of ​​the parking lot calculated from the parking polygon information, by referring to the parking area information table.

[0009] According to (2) above, if there are two or more facility information items near a parking polygon, the area of ​​the parking lot calculated from the parking polygon information can be compared with the area of ​​the parking lot calculated based on the size of each facility, thereby enabling the creation of a map that more accurately links the parking polygon included in the map information with the facility information.

[0010] (3) In the map information creation device described in (2) above (for example, the map information creation device 1 described later), the parking lot determination unit (for example, the parking lot determination unit 113 described later) further, If the facility extraction unit (for example, the facility extraction unit 112 described later) extracts two or more pieces of facility information, the parking lot having the parking lot polygon information may be determined to be the parking lot of the facility information having the closest central position information from one node of the parking lot polygon information, and the facility information having the second closest central position information, which has size information close to the size information of the facility associated with the area of ​​the parking lot calculated from the parking lot polygon information.

[0011] According to (3) above, by comparing the area of ​​the parking lot calculated from the parking lot polygon information with the area of ​​the parking lot calculated based on the size of each facility, without human intervention, it becomes possible to create a map that more accurately links the parking lot polygons included in the map information with the facility information.

[0012] (4) In the map information creation device described in (1) above (for example, the map information creation device 1 described later), the parking lot determination unit (for example, the parking lot determination unit 113 described later) further, When the facility information with the central position information closest to the distance from one node of the parking lot polygon information and the facility information with the second-closest central position information have respective distances within a predetermined distance, the parking lot with the parking lot polygon information may be determined as the parking lot of the facility information with a larger facility scale.

[0013] According to (4) above, when there is a small facility such as a food stall at the closest distance to the parking lot polygon and a shopping mall nearby, it is possible to prevent misjudging the parking lot polygon as the parking lot of the food stall.

[0014] (5) The map information creation method of the present invention is a map information creation method executed by a computer, a map information storage step of storing map information including the central position information of facilities as facility information for a plurality of facilities and a plurality of parking lot polygon information; a parking lot determination step of determining the parking lot with the parking lot polygon information as the parking lot of the facility information having the central position information closest to the distance from one node of the parking lot polygon information.

[0015] According to the method of (5) above, the same effect as the map information creation device of (1) above is achieved.

Effects of the Invention

[0016] According to the present invention, it is possible to provide a map information creation device and a map information creation method capable of easily associating the parking lot polygon and the facility information included in the map information for a facility having central position information close to the distance from one node of the parking lot polygon information.

Brief Description of the Drawings

[0017] [Figure 1] It is a block diagram showing the basic configuration of a map information creation device which is an embodiment of the present invention. [Figure 2]It is a diagram showing an example of map information indicating the central position information of a facility and the polygon information of the facility, and the position and polygon information of a parking lot in an embodiment of the present invention. [Figure 3] It is a diagram showing the distance between a facility and a parking lot polygon in an embodiment of the present invention. [Figure 4] It is a diagram showing an example of a case where two facilities are located near a parking lot polygon in an embodiment of the present invention. [Figure 5] It is a flowchart showing an operation of creating a map by associating a parking lot polygon with facility information in an embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0018] Hereinafter, a preferred embodiment of the map information creation device of the present invention will be described in detail with reference to the drawings. FIG. 1 shows the basic configuration of the map information creation device 1. The functional blocks included in the map information creation device 1 will be described with reference to the block diagram of FIG. 1.

[0019] As shown in FIG. 1, the map information creation device 1 includes a control unit 11, a storage unit 12, a communication unit 13, a display unit 14, and an input unit 15.

[0020] The control unit 11 is composed of an arithmetic processing device such as a microprocessor, and controls each part constituting the map information creation device 1. Details of the control unit 11 will be described later.

[0021] The storage unit 12 is composed of a semiconductor memory or the like, and stores various programs such as a control program called firmware or an operating system, a program for performing map information creation processing, and further various information such as map information. In the figure, as information stored in the storage unit 12, a facility information storage unit 121 that stores the facility information of each of a plurality of facilities, a map information storage unit 122 that stores map information including the central position information of each facility and the polygon information of each parking lot, and a parking lot area information table 123 of the facility are illustrated. In the following embodiments, coin-operated parking lots and the like that are not facility parking lots are excluded from the scope of determination of the present invention. Coin-operated parking lots and the like are indicated to that effect on the map and can therefore be excluded from the scope of determination. Furthermore, parking lots for individuals on a monthly basis can also be easily excluded as parking lots outside the scope of the present invention, for example, based on characteristics such as long parking times, especially long parking times at night, and a close relationship between the number of vehicles parked at night and the number of parking spaces calculated from the area of ​​the parking lot.

[0022] Facility information includes, for example, facility identification information (facility ID), facility name, facility type (and / or genre), telephone number, address, business hours, central location information indicating the facility's central location (e.g., latitude and longitude information), and facility size (e.g., either the facility's site area or the total floor area, which is the sum of the facility's floor areas). Here, facility type indicates the type of business the facility operates in, for example, a convenience store, hospital, or car dealership.

[0023] The map information storage unit 122 includes the central location information and polygon information of each facility on the map, as well as the location and polygon information of parking lots. Figure 2 shows an example of the central location information and polygon information of facilities, and the location and polygon information of parking lots.

[0024] The facility parking area information table 123 refers to a table that shows the correspondence between the area or range of area as a measure of the facility's size and the standard parking area or range of parking area that is expected for a facility of that size. Here, the area as a measure of the facility's size is either the site area of ​​the facility or the total floor area which is the sum of the floor areas of the facility. The parking area is either the site area of ​​the parking lot or, in the case of a multi-story parking garage, the total floor area which is the sum of the floor areas.

[0025] Map information including facility information, facility center location information, facility polygon information, parking lot location and polygon information, and parking lot area information table 123, etc., may be pre-stored in the storage unit 12, or they may be downloaded as needed from a server device (not shown) connected to the communication network 60. Furthermore, this information may be modified as appropriate in response to user input, etc.

[0026] The communication unit 13 has a DSP, etc., and complies with standards such as LTE (Long Term Evolution), 4G (4th Generation), 5G (5th Generation), and Wi-Fi (registered trademark) to realize wireless and wired communication with other devices (for example, the server mentioned above) via the communication network 60. The communication network 60 is realized by a network such as the Internet or a mobile phone network, or a network that combines these. A LAN (Local Area Network) may also be included as part of the network.

[0027] The display unit 14 is composed of a display device such as a liquid crystal display or an organic electroluminescent panel. The display unit 14 displays an image in response to instructions from the control unit 11. The input unit 15 consists of input devices such as physical switches called a numeric keypad and a touch panel (not shown) mounted on top of the display surface of the display unit 14.

[0028] Next, the details of the control unit 11 will be explained. The control unit 11 is composed of a microprocessor having a CPU, RAM, ROM, and I / O. The CPU executes each program read from the ROM or storage unit 12, and during execution, it reads information from the RAM, ROM, and storage unit 12, writes information to the RAM and storage unit 12, and exchanges signals with the communication unit 13. In this way, the processing in this embodiment is realized through the cooperation of hardware and software (programs).

[0029] The control unit 11 includes, as functional blocks, a distance calculation unit 111, a facility extraction unit 112, a parking lot determination unit 113, and a facility information recording unit 114.

[0030] The distance calculation unit 111 calculates the distance between the center position information of the facility included in the facility information and one node of the parking polygon information. Here, one node of the parking polygon information refers to a position included in the parking polygon that is the shortest distance from the center position information of the facility. Figure 3 is a diagram showing the distance between the facility and the parking polygon. As shown in Figure 3, the distance between the facility and the parking polygon is the shortest distance between the center position of the facility and any position included in the parking polygon. Note that if the center position of the facility is included in the parking polygon, the distance between the center position information of the facility included in the facility information and one node of the parking polygon information will be 0 (zero).

[0031] The facility extraction unit 112 extracts facility information for parking lots that have parking polygon information selected by the user, where the distance from one node of the parking polygon information is less than or equal to a predetermined distance.

[0032] The parking lot determination unit 113 first determines that if the parking lot polygon information is tagged with facility information (for example, a facility ID), the parking lot polygon information is the parking lot of the facility identified by the facility ID. Furthermore, the parking lot determination unit 113 determines that the parking lot polygon information is the parking lot of the facility if the parking lot polygon includes the central location information of the facility included in the facility information. In cases other than those described above, the parking lot determination unit 113 may determine a parking lot having parking lot polygon information as a parking lot with facility information that has the closest central position information from one node of the parking lot polygon information among the facility information extracted by the facility extraction unit 112. However, if the determination is based solely on the shortest distance, as shown in Figure 4, for example, if there is a small facility such as a food stall at the closest distance to a parking polygon, and a shopping mall is nearby, the parking polygon may be mistakenly identified as the food stall's parking lot.

[0033] To eliminate such cases, the parking lot determination unit 113 may, when two or more facility information entries are extracted by the facility extraction unit 112, refer to the parking lot area information table 123 and determine that the parking lot has facility information with the closest scale information to the facility scale information associated with the area of ​​the parking lot calculated from the parking lot polygon information. Furthermore, if the facility extraction unit 112 extracts two or more pieces of facility information, the parking lot determination unit 113 may determine the parking lot to be the facility information having the closest central position information from one node of the parking lot polygon information, and the facility information having the second closest central position information, which has size information close to the size information of the facility associated with the area of ​​the parking lot calculated from the parking lot polygon information. Furthermore, the parking lot determination unit 113 may determine that a facility is a parking lot of a large facility if the distance between the facility information with the closest central position information from one node of the parking lot polygon information and the facility information with the second closest central position information is less than or equal to a predetermined distance.

[0034] The facility information recording unit 114 stores the facility information determined by the parking lot determination unit 113 in the map information storage unit 122, associating it with the parking lot polygon information. By doing so, it becomes possible to create a map that easily links parking polygons and facility information included in the map information, without having to manually link facility information to the parking polygons included in the map information. The configuration of each functional unit of the map information creation device 1, which is illustrated as an example of this embodiment, has been described above. Next, the operation of this embodiment will be explained with reference to the flowchart shown in Figure 5. Here, Figure 5 is a flowchart showing the operation of creating a map by linking parking polygons with facility information. As mentioned above, coin parking lots and the like that are not facility parking lots are excluded from the parking polygons to be judged. In addition, if a parking polygon has tag information indicating a facility, or if a parking polygon includes the center position information of a facility, the facility information is linked to the parking polygon and stored in the map information storage unit 122. For this reason, such parking polygons are excluded from the processing flow below.

[0035] Referring to Figure 5, in step S10, the map information creation device 1 (parking lot determination unit 113) selects one parking lot polygon.

[0036] In step S11, the map information creation device 1 (distance calculation unit 111) calculates the distance from the parking polygon information for each facility located near the parking lot selected by the user. Specifically, it calculates the distance between the center position information of the facility and one node of the parking polygon information.

[0037] In step S12, the map information creation device 1 (facility extraction unit 112) extracts facility information for parking lots that have parking polygon information selected by the user, where the distance from one node of the parking polygon information is less than or equal to a predetermined distance.

[0038] In step S13, if the map information creation device 1 (parking lot determination unit 113) extracted one facility information in step S12, it proceeds to step S14. If two or more facility information items were extracted, it proceeds to step S15. If no facility information items were extracted, the process ends. In step S14, the facility information is linked to the parking lot polygon, and the process proceeds to step S16.

[0039] In step S15, the map information creation device 1 (parking lot determination unit 113) refers to the facility size information and / or parking lot area information table 123 to determine the facility information to be associated with the parking lot polygon, and then proceeds to step S16.

[0040] In step S16, the map information creation device 1 (facility information recording unit 114) stores the parking lot polygon information and the facility information associated with the parking lot polygon information in the map information storage unit 122, associating them with each other.

[0041] As described above, the map information creation device 1 can associate facility information with parking polygons by performing the above operations on the parking polygons included in the map information.

[0042] According to the embodiment described above, it is possible to provide a map information creation device and a map information creation method that can easily create a map in which parking polygons included in map information and facility information are linked without manually linking facility information to parking polygons included in map information.

[0043] Each of the devices can be implemented using hardware, software, or a combination thereof. Furthermore, the navigation method performed by the cooperation of each device included in the above-described navigation system can also be implemented using hardware, software, or a combination thereof. Here, implementation by software means implementation by a computer loading and executing a program.

[0044] Programs can be stored and supplied to a computer using various types of non-transitory computer-readable media. Non-transitory computer-readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (e.g., flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (e.g., magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, CD-R / Ws, and semiconductor memory (e.g., mask ROMs, PROMs (Programmable ROMs), EPROMs (Erasable PROMs), flash ROMs, and RAMs (random access memory)). Programs may also be supplied to a computer using various types of transient computer-readable media. Examples of transient computer-readable media include electrical signals, optical signals, and electromagnetic waves. Transitory computer-readable media can be supplied to a computer via wired communication channels such as electric wires and optical fibers, or via wireless communication channels.

[0045] While the embodiments described above are preferred embodiments of the present invention, the scope of the present invention is not limited to these embodiments, and various modifications can be made to implement the invention without departing from the spirit of the invention.

[0046] <Example 1> For example, the functional configuration shown in Figure 1 is merely illustrative and does not limit the functional configuration of this embodiment. In other words, it is sufficient that each device is equipped with a function that can execute a series of processes related to the map information creation function of the present invention as a whole, and the type of functional block used to realize this function is not particularly limited to the example in Figure 1. Furthermore, the embodiments described above may also be modified, for example, as shown in the following modified examples. The modified examples described below may also be combined in further ways.

[0047] <Modification 2> In the above-described embodiment, the map information creation device 1 is implemented using a single server device, but it may also be implemented as a distributed processing system, where each function of the map information creation device 1 is distributed among multiple server devices as appropriate. Alternatively, each function of the map information creation device 1 may be implemented using virtual server functions on the cloud. [Explanation of symbols]

[0048] 1. Map information creation device 11 Control Unit 111 Distance Calculation Unit 112 Facility Extraction Department 113 Parking lot determination unit 114 Facility Information Records Department 12 Storage section 121 Facility Information Storage Unit 122 Map Information Storage Unit 123 Parking Area Information Table 13 Communications Department 14 Display section 15 Input section 60 Communication Network

Claims

1. A map information storage unit stores map information including the central location information of multiple facilities and information on multiple parking polygons as facility information for multiple facilities, A parking lot determination unit determines that a parking lot having the aforementioned parking lot polygon information is the parking lot of the facility information having the closest central position information from one node of the aforementioned parking lot polygon information, Equipped with, A map information creation device characterized in that one node of the parking polygon information is a location included in the parking polygon that is the shortest distance from the facility's central location information.

2. The aforementioned facility information includes size information indicating the size of the facility, The system includes a parking area information table that shows the correspondence between the area or range of area as a measure of the facility's size and the standard parking area or range of parking area expected for a facility of that size. The facility extraction unit extracts facility information having center position information such that the distance from one node of the parking polygon information is less than or equal to a predetermined distance, The aforementioned parking lot determination unit is The map information creation device according to claim 1, characterized in that, when two or more facility information entries are extracted by the facility extraction unit, the parking lot having the parking lot polygon information is determined to be a parking lot with facility information having scale information close to the facility scale information associated with the area of ​​the parking lot calculated from the parking lot polygon information, by referring to the parking lot area information table.

3. The aforementioned parking lot determination unit further, The map information creation device according to claim 2, characterized in that, when two or more pieces of facility information are extracted by the facility extraction unit, the parking lot having the parking lot polygon information is determined to be the parking lot of the facility information having the closest central position information from one node of the parking lot polygon information, and the facility information having the second closest central position information, which has scale information close to the scale information of the facility associated with the area of ​​the parking lot calculated from the parking lot polygon information.

4. The aforementioned parking lot determination unit further, The map information creation device according to claim 1, characterized in that if the distance between the facility information having the closest central position information from one node of the parking polygon information and the facility information having the second closest central position information is less than or equal to a predetermined distance, the parking lot having the parking polygon information is determined to be the parking lot of the facility information with a large facility size.

5. A method for creating map information executed by a computer, comprising: a map information storage step of storing map information including center position information of facilities and a plurality of parking lot polygon information as facility information for a plurality of facilities; a parking lot determination step of determining a parking lot having the parking lot polygon information as the parking lot of the facility information having the center position information closest in distance from one node of the parking lot polygon information; and one node of the parking lot polygon information is a position included in the parking lot polygon and is a position at the shortest distance from the center position information of the facility. A method for creating map information characterized by this.

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