JP2017125908A - Feature information provision system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a feature information provision system which is convenient to use.SOLUTION: The feature information provision system includes: a portable communication terminal device 4 provided with an imaging device 1, own position measurement means 2, and imaging direction measurement means 3 of the imaging device 1; and a server device 6 provided with input means 5 for receiving own position measurement information and imaging direction measurement information from the portable communication terminal device 4. The server device 6 includes a map data storage part 11 for storing a digital surface layer model 7, and polygon data 10 obtained by setting a polygon using a name about a feature as attribute data in an arrangement area of the feature on a two-dimensional plane, retrieval means 14 for calculating an intersection point between the own position measurement information and the digital surface layer model 7 within a map space of an imaging vector determined by the imaging direction measurement information, and extracting attribute data of the polygon to which the two-dimensional coordinates of the intersection point belong, and output means 15 for transmitting the attribute data extracted by the retrieval means 14 to the portable communication terminal device 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a feature information providing system.

  As what provides the name regarding a feature, the thing of patent document 1 is conventionally known, for example. This conventional example displays a two-dimensional map, and the name of the owner of the building is set as attribute data in the polygon for expressing the building on the two-dimensional map.

  On the other hand, in Patent Document 2, information described in a ground building ledger or the like related to the building is linked as attribute data to graphic data representing the three-dimensional shape of the building. The above attribute data can be used, for example, for a feature search using the content as a search key.

JP 2006-72068 A JP 2003-77000 A

  However, the above conventional example has a drawback in that it is inconvenient when a user makes an inquiry from the site using a portable communication terminal device.

  In other words, in order to find the name of a feature in front of one's own eyes, the user must strongly fit the map space in the real space in order to identify and designate the feature representing the feature on the map space. Therefore, it takes time and may cause misunderstandings due to incorrect fitting.

  The present invention has been made to solve the above-described drawbacks, and an object thereof is to provide a feature information providing system that is easy to use. Another object of the present invention is to provide a server device that is easy to use.

According to the invention, the object is
A portable communication terminal device 4 including an imaging device 1, a self-position measuring unit 2, and an imaging direction measuring unit 3 of the imaging device 1;
A server device 6 having input means 5 for receiving the local position measurement information and the imaging direction measurement information from the portable communication terminal device 4;
The server device 6
A map data storage unit 11 for storing polygon data 10 in which a polygon 9 having a name related to a numerical surface layer model 7 and a feature 8 as attribute data is set in an arrangement region of the feature 8 on a two-dimensional plane;
The intersection 13 with the numerical surface layer model 7 in the map space of the imaging vector 12 determined by the local position measurement information and the imaging direction measurement information is calculated, and the attribute data of the polygon 9 to which the two-dimensional coordinates of the intersection 13 belong. Search means 14 for extracting
This is achieved by providing a feature information providing system having output means 15 for transmitting attribute data extracted by the search means 14 to the portable communication terminal device 4.

  According to the present invention, the portable communication terminal device 4 acquires the own position and the imaging direction when the feature 8 is imaged by the imaging device 1 by the own position measuring unit 2 and the imaging direction measuring unit 3, and the server device 6. Output to. The server device 6 that has received these sets the imaging vector 12 in the map space based on the local position measurement information and the imaging direction measurement information, and calculates the intersection 13 of the imaging vector 12 with the numerical surface model 7 (DSM). After that, the polygon 9 to which the two-dimensional coordinates of the intersection 13 belong is specified, and its attribute data is transmitted to the portable communication terminal device 4.

  In the present invention in which the information providing target feature 8 is specified using the imaging conditions of the imaging device 1, the user only needs to image the target feature 8 with the imaging device 1, and to the map space of the real space. Since fitting is not necessary, usability can be greatly improved. In addition, recently, since the mobile communication terminal device 4 such as a so-called smartphone is generally equipped with a camera, a GPS (GNSS) receiver, and an electronic compass function, the system is easily constructed using these. It is possible. In addition to the above, the portable communication terminal device 4 is also equipped with a display as a standard, so that it is possible to display the imaging status of the imaging device 1 and the name related to the feature 8 by using this. .

  Further, the numerical surface model 7 is used to specify the position of the target feature 8 in the three-dimensional space based on the imaging condition, and the name of the feature 8 is searched from the specified three-dimensional coordinate position. By extracting the two-dimensional coordinate position from the three-dimensional coordinate position and then using the polygon data 10 in which the polygon 9 having the name related to the feature 8 as attribute data is expanded on the two-dimensional plane, for example, three-dimensional by texture mapping Compared to the case of constructing GIS, software development efforts can be greatly reduced. Although it is sufficient to use the existing numerical surface model 7 as described above, even if it is created by aerial photogrammetry or the like in order to reflect the latest environment, it does not take much time. It is sufficient to divert existing two-dimensional GIS.

  The name related to the feature 8 described above is, for example, Tokyo Sky Tree and Tokyo Sky Tree Town, which includes ancillary facilities such as an aquarium, Kiso Komagatake, and the Japanese Alps, which is the collective name of the mountain range to which it belongs. In addition, Tokyo Tower and the name of the administrative district to which the address belongs, Shiba Koen 4-chome, etc., are generally different when the area to which the feature 8 belongs is regarded as a narrow area and when it is regarded as a wide area. become. In consideration of such circumstances, the server device 6 includes an attribute database 16 that stores an appropriate number of names in a wider area in addition to narrow names related to the feature 8 as attribute data in association with each polygon 9; When the attribute data is extracted by the search means 14, a selection information adding means 17 for adding extraction of a wide area name as option selection information to the narrow area name extracted by the search means 14 is provided. In this way, it is possible to smoothly reach the desired name of the feature 8 while narrowing down the search result based on the imaging condition.

  Furthermore, it is desirable that the numerical surface layer model 7 has good position accuracy in order to identify the position of the feature 8 to be provided according to the imaging conditions. In this case, if the survey results of both aerial photogrammetry and aerial laser surveying are integrated and generated for the numerical surface layer model 7, a highly accurate numerical surface layer model 7 can be obtained with various terrain conditions by taking advantage of the respective measurement methods. Can be obtained stably.

  In addition, the above-described GPS tends to be inferior in position accuracy in the altitude direction due to its nature, and there is a concern that the accuracy of the imaged vector 12 may be reduced. In this regard, the server device 6 includes an altitude value extracting means 18 for extracting the altitude value in the numerical surface model 7 corresponding to the plane position information in the own position measurement information. If the image capturing vector 12 is determined using the corrected altitude value obtained by adding the predetermined correction value C to the altitude value obtained by the altitude value extracting means 18 as altitude data instead of the altitude information of the numerical value surface layer, Using the model 7, the altitude position accuracy can be further increased. For the correction value C, for example, it is possible to use a general height at which the portable communication terminal device 4 is held by the user when the imaging device 1 captures an image.

Moreover, according to the present invention,
Input means 5 for receiving the own position measurement information and the imaging direction measurement information;
A map data storage unit 11 for storing polygon data 10 in which a polygon 9 having a name related to a numerical surface layer model 7 and a feature 8 as attribute data is set in an arrangement region of the feature 8 on a two-dimensional plane;
The intersection 13 with the numerical surface layer model 7 in the map space of the imaging vector 12 determined by the local position measurement information and the imaging direction measurement information is calculated, and the attribute data of the polygon 9 to which the two-dimensional coordinates of the intersection 13 belong. Search means 14 for extracting
It is possible to provide a server device 6 having output means 15 for transmitting attribute data extracted by the search means 14.

  As is clear from the above description, according to the present invention, since names related to features can be acquired very easily and accurately, for example, tourism can be enhanced.

It is a hardware block diagram of the feature information provision system which concerns on this invention. It is a figure which shows the relationship between a numerical surface layer model and polygon data, (a) is a perspective view explaining the situation linked | related based on the geographical position, (b) is based on an imaging | photography vector via a numerical surface layer model. It is a figure explaining the condition where a polygon is specified. It is a figure which shows an imaging | photography condition, (a) is a top view, (b) is a side view, (c) is a principal part expanded side view. It is a flowchart of the feature information provision process which concerns on this invention.

  1 to 4 show an embodiment of the present invention. In this embodiment, the feature information providing system is configured by connecting a server device 6 and an appropriate number of smart phones (portable communication terminal devices 4) through a communication network 21 such as the Internet, as shown in FIG. Is done. In the case of the smartphone 4, a camera (imaging device 1), a display 22 including an LCD, and an operation unit 23 used for menu selection at the time of information processing are arranged.

  In addition, application software for providing the feature 8 information is installed in the smartphone 4 so that the moving image acquired by the camera 1 can be displayed on the display 22 as a through image (live view image). The self-position measuring unit 2 and the imaging direction measuring unit 3 that are controlled and operated by the control unit 24 are formed. The own position measuring means 2 is the position of the smartphone 4 by GPS (GNSS), in other words, the position of the camera 1, and the imaging direction measuring means 3 is an electronic compass, that is, a three-axis type geomagnetic sensor, a three-axis acceleration sensor, Thus, the imaging direction of the camera 1, in other words, the optical axis direction of the camera lens is detected. The above-described smartphone 4 is connected to the above-described communication network 21 by the communication unit 25 and transmits information obtained by measuring the camera position and the camera imaging direction at the time of through image acquisition to the server device 6.

  FIG. 3 shows a through image acquisition situation by the smartphone 4. At this time, the self-position measuring means 2 uses the three-dimensional coordinates x, y, z consisting of the longitude and latitude x and y and the altitude value z to determine the position of the smartphone 4. The imaging direction measuring means measures the imaging azimuth of the camera 1 as the azimuth angle θ and the imaging elevation angle of the camera 1 as the elevation angle α with reference to the magnetic north direction based on the rotation angles ω, φ, k. To do. In FIG. 3, 8 is a feature such as a building, 26 is a road, 27 is an optical axis of the camera lens, and 27a is a point where the optical axis 27 contacts the feature. Moreover, in FIG.3 (c), c is the ground height of the smart phone 4 at the time of through image acquisition.

  On the other hand, the server device 6 includes a map data storage unit 11, an attribute database 16, an altitude value extraction unit 18, a search unit 14, a selection information addition unit 17, an option information addition unit 29, and output data that are controlled and operated by the control unit 28. The communication unit 31 includes the generation unit 30 and the communication unit 31. The communication unit 31 is connected to the communication network 21. The input unit 5 receives the camera position measurement information and the like from the smartphone 4. The output unit 15 receives the smartphone 4. Send data to.

  The map data storage unit 11 has a numerical surface layer model 7 (DSM) and polygon data 10, and as shown in FIG. 2A, these are overlaid like a GIS on the basis of the geographical position. It is constructed by. In the present embodiment, the numerical surface layer model 7 includes an aerial photogrammetry using an oblique camera that includes a plurality of cameras and simultaneously shoots a plurality of directions in one shooting, and an aerial laser surveying. It is formed by integrating results. The integration of survey results is the same as the point cloud acquired as a result of laser surveying, by extracting the measurement points distributed in a point shape from the survey results in aerial photogrammetry and combining them with the point cloud that is the result of aerial laser surveying. Thus, the numerical surface layer model 7 with extremely excellent positional accuracy is generated.

  On the other hand, the polygon data 10 is obtained by defining the positions and sizes of various features 8 using a polygon 9 on a two-dimensional plane as in a two-dimensional map. For example, a two-dimensional orthogonal coordinate system composed of longitude and latitude. Are formed by setting polygons 9 in the arrangement areas of the various features 8 in FIG.

  The attribute database 16 stores each of the polygons 9 and attribute data of the feature 8 indicated by each polygon 9 in association with each other. In this attribute data, in addition to the narrow name of the feature 8 represented by the polygon 9, for example, the name of the sacred tree, the name of a wider area, for example, the name of the shrine where the sacred tree is erected, the village name, etc. Each field is also set. In the attribute data, commentary information about the feature 8, for example, a field derived from a sacred tree is also set.

  The altitude value extracting means 18 extracts the plane coordinates x, y, that is, longitude and latitude information from the camera position measurement information consisting of the three-dimensional coordinate values x, y, z received by the input means 5 as described above. The altitude value of the numerical surface model 7 corresponding to the longitude and latitude information is extracted with reference to the numerical surface layer model 7 described above.

  The search means 14 searches for a name related to the feature 8 to be imaged based on the altitude value extracted by the altitude value extraction means 18 and the above-described local position measurement information and imaging direction measurement information. In the search, first, as shown in FIG. 2B, in the map space by the numerical surface layer model 7, the elevation value, the plane coordinates x and y in the local position measurement information, and the imaging direction measurement information ω, An imaging vector 12 is set based on φ and k, and an intersection 13 of the imaging vector 12 with the numerical surface model 7 is obtained. The three-dimensional coordinate position of the smartphone 4 that is the starting point of the imaging vector 12 is an altitude coordinate position Z calculated by adding an appropriate correction value C to the altitude value, and a planar coordinate position x, y in the own position measurement information. X and Y corresponding to are adopted. As the correction value C for obtaining the elevation coordinate position, for example, 155 cm, which is considered to be a general height c at which the smartphone 4 is held by the user when the camera 1 takes an image, is used.

  When the intersection point 13 is specified, next, as shown in FIG. 2B, the corresponding point 32 on the polygon data 10 of the intersection point 13 is obtained, and then the polygon 9 to which the corresponding point 32 belongs is specified. Thereafter, if the attribute data corresponding to the specified polygon 9 is searched in the attribute database 16, the name related to the feature 8 is obtained. The attribute data of the attribute database 16 includes the narrow area name as described above, and the search by the search means 14 is performed on the narrow area name.

  As described above, the selection information adding means 17 uses the attribute database to obtain the narrow area name from the attribute data after the search means 14 specifies the polygon 9 using the self-position measurement information and the like. In 16, selection information is generated as to whether or not to switch and display as option selection information for a wider area name included in the attribute data. When there are a plurality of wide area names in the attribute data, selection information is sequentially generated, and each selection information is ordered so as to be sequentially switched and displayed with priority given to narrower areas.

  The option information adding means 29 generates selection information for the commentary information related to the feature 8 while the selection information adding means 17 targets the wide area name related to the feature 8 in the attribute data. To do. When the polygon 9 is specified by the search means 14, the option information adding means 29 first searches the attribute database 16 for the presence / absence of commentary information on the feature 8 and generates selection information only when there is commentary information. To do.

  The output data generation means 30 generates output data for displaying narrow area information on the feature 8 as a search result by the search means 14 on the display 22 of the smartphone 4. In this generation, the selection information generated by the selection information adding unit 17 and the option information adding unit 29 is also included in the display target.

  FIG. 4 shows the operation of the above feature information providing system. First, when the owner of the smartphone 4 operates the operation unit 23 to activate the application software and displays a through image on the display 22 (step C1), the control unit 24 includes the own position measurement unit 2 and the imaging direction measurement unit 3. The camera position measurement information and the like are acquired from (step C2) and transmitted to the server device 6 (step C3).

  In the server device 6, when data is received from the smartphone 4, it is first received by the control means 28 whether a request for additional information as the selection information is received (step S <b> 1), or reception of camera position measurement information or the like. (Step S2). When the request is for additional information, attribute data corresponding to the selected information is extracted from the attribute database 16 via the selected information adding means 17 or the like (step S7). On the other hand, when camera position measurement information or the like is received, the control unit 28 causes the altitude value extraction unit 18 to extract the altitude value from the numerical surface model 7, and then the search unit 14 converts the altitude value to the correction value C. Is added to calculate the corrected altitude value, and this is combined with camera position measurement information and the like to analyze the imaging vector 12, and in addition to the analyzed imaging vector 12, the numerical surface layer model 7 and the polygon data 10 are The attribute data is extracted using it (step S3).

  Next, the control means 28 inquires the selection information adding means 17 etc. about the presence / absence of option selection information (step S4). If there is option selection information, it adds it (step S5) and outputs the data generation means 30. Thus, a search result screen is generated and transmitted from the output means 15 to the smartphone 4 (step S6).

  When the smartphone 4 receives the search result (step C4), the control unit 24 displays the search result on the display 22 (step C5). Thereafter, when option selection information is selected by operating the operation unit 23 (step C6), the control unit 24 transmits a request for additional information from the communication unit 25 to the server device 6 (step C7). When additional information is received (step C4), it is displayed on the display 22 (step C5) and further option selection information is selected (step C6). If option selection information is not selected, the feature information providing process is completed there.

In the above-described embodiment, the case where the smartphone 4 is used as the portable communication terminal device has been described. However, a tablet computer or a wearable computer can be used as long as it has a self-position measuring function or the like. In addition, the screen display of the search result can be configured by, for example, character display of the name of the feature 8 and button display of the option selection information. It is possible to make it easier to understand. In addition to displaying the search result as character information or the like on the display 22, it is sufficient to notify the user as audio information. In this case, it is sufficient to set an audio file in the attribute data of the server device 6.
(Appendix)
(Appendix 1)
A portable communication terminal device including an imaging device, a self-position measuring unit, and an imaging direction measuring unit of the imaging device;
A server device including an input unit that receives the local position measurement information and the imaging direction measurement information from the portable communication terminal device;
The server device
A map data storage unit for storing polygon data in which a numerical surface layer model and a polygon having a name related to a feature as attribute data are set in an arrangement region of the feature on a two-dimensional plane;
Retrieval means for calculating an intersection point of the imaging vector determined by the self-position measurement information and the imaging direction measurement information with the numerical surface layer model in a map space, and extracting attribute data of the polygon to which the two-dimensional coordinates of the intersection point belong When,
A feature information providing system comprising: output means for transmitting attribute data extracted by the search means to a portable communication terminal device.
(Appendix 2)
The server device
In addition to the narrow area name for the feature, an attribute database that stores an appropriate number of wide area names as attribute data in association with each polygon;
The feature information according to appendix 1, further comprising selection information adding means for adding extraction of a wide area name as option selection information to the narrow area name extracted by the searching means when the attribute data is extracted by the searching means. Offer system.
(Appendix 3)
The feature information providing system according to appendix 1 or 2, wherein the numerical surface layer model is generated by integrating survey results of both aerial photogrammetry and aerial laser surveying.
(Appendix 4)
The server device has an altitude value extracting means for extracting an altitude value in a numerical surface layer model corresponding to planar position information in the local position measurement information,
The search unit determines an imaging vector using, as elevation data, an altitude value after correction obtained by adding a predetermined correction value to the altitude value obtained by the altitude value extraction unit instead of the altitude information in the local position measurement information. The feature information providing system according to any one of appendices 1 to 3.
(Appendix 5)
Input means for receiving the self-position measurement information and the imaging direction measurement information;
A map data storage unit for storing polygon data in which a numerical surface layer model and a polygon having a name related to a feature as attribute data are set in an arrangement region of the feature on a two-dimensional plane;
Retrieval means for calculating an intersection point of the imaging vector determined by the self-position measurement information and the imaging direction measurement information with the numerical surface layer model in a map space, and extracting attribute data of the polygon to which the two-dimensional coordinates of the intersection point belong When,
A server apparatus comprising: output means for transmitting attribute data extracted by the search means.
(Appendix 6)
Input means for receiving local position measurement information and imaging direction measurement information from a portable communication terminal device;
A map data storage unit for storing polygon data in which a numerical surface layer model and a polygon having a name related to a feature as attribute data are set in an arrangement region of the feature on a two-dimensional plane;
Retrieval means for calculating an intersection point of the imaging vector determined by the self-position measurement information and the imaging direction measurement information with the numerical surface layer model in a map space, and extracting attribute data of the polygon to which the two-dimensional coordinates of the intersection point belong When,
A server apparatus comprising: output means for transmitting attribute data extracted by the search means to the portable communication terminal apparatus.

DESCRIPTION OF SYMBOLS 1 Imaging device 2 Self-position measurement means 3 Imaging direction measurement means 4 Portable communication terminal device 5 Input means 6 Server apparatus 7 Numerical surface layer model 8 Feature 9 Polygon 10 Polygon data 11 Map data storage part 12 Imaging vector 13 Intersection 14 Search means DESCRIPTION OF SYMBOLS 15 Output means 16 Attribute database 17 Selection information addition means 18 Elevation value extraction means C Correction value

Claims (5)

A portable communication terminal device including an imaging device, a self-position measuring unit, and an imaging direction measuring unit of the imaging device;
A server device including an input unit that receives the local position measurement information and the imaging direction measurement information from the portable communication terminal device;
The server device
A map data storage unit for storing polygon data in which a numerical surface layer model and a polygon having a name related to a feature as attribute data are set in an arrangement region of the feature on a two-dimensional plane;
Retrieval means for calculating an intersection point of the imaging vector determined by the self-position measurement information and the imaging direction measurement information with the numerical surface layer model in a map space, and extracting attribute data of the polygon to which the two-dimensional coordinates of the intersection point belong When,
A feature information providing system comprising: output means for transmitting attribute data extracted by the search means to a portable communication terminal device. The server device
In addition to the narrow area name for the feature, an attribute database that stores an appropriate number of wide area names as attribute data in association with each polygon;
2. The feature according to claim 1, further comprising selection information adding means for adding extraction of a wide area name as option selection information to the narrow area name extracted by the search means when extracting the attribute data by the search means. Information provision system.   3. The feature information providing system according to claim 1, wherein the numerical surface layer model is generated by integrating survey results of both aerial photogrammetry and aerial laser surveying. The server device has an altitude value extracting means for extracting an altitude value in a numerical surface layer model corresponding to planar position information in the local position measurement information,
The search unit determines an imaging vector using, as elevation data, an altitude value after correction obtained by adding a predetermined correction value to the altitude value obtained by the altitude value extraction unit instead of the altitude information in the local position measurement information. The feature information providing system according to any one of claims 1 to 3. Input means for receiving the self-position measurement information and the imaging direction measurement information;
A map data storage unit for storing polygon data in which a numerical surface layer model and a polygon having a name related to a feature as attribute data are set in an arrangement region of the feature on a two-dimensional plane;
Retrieval means for calculating an intersection point of the imaging vector determined by the self-position measurement information and the imaging direction measurement information with the numerical surface layer model in a map space, and extracting attribute data of the polygon to which the two-dimensional coordinates of the intersection point belong When,
A server apparatus comprising: output means for transmitting attribute data extracted by the search means.

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