KR20170099137A - Apparatus and method for generating map - Google Patents

Apparatus and method for generating map Download PDF

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KR20170099137A
KR20170099137A KR1020160021134A KR20160021134A KR20170099137A KR 20170099137 A KR20170099137 A KR 20170099137A KR 1020160021134 A KR1020160021134 A KR 1020160021134A KR 20160021134 A KR20160021134 A KR 20160021134A KR 20170099137 A KR20170099137 A KR 20170099137A
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map
initial
map data
display terminal
data
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KR1020160021134A
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Korean (ko)
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김민규
이무훈
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한국외국어대학교 연구산학협력단
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
    • G09B29/003—Maps
    • G06F17/30241—
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/10—Services

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Abstract

The present invention relates to a map generating apparatus and method. According to a specific example of the present invention, when motion events on the map of the user-based map are detected, map data of the remaining moving positions excluding boundary information of the initial map based on boundary information and moving position information of the queried space area on the map, The map data can be displayed on the map in real time, and the map data can be displayed in real time on the map. In addition, .

Description

[0001] APPARATUS AND METHOD FOR GENERATING MAP [0002]

The present invention relates to a map generating apparatus and method, and more particularly, it relates to a map generating apparatus and method for reading and displaying only map data of a user's map moving position, thereby shortening the time required for reading and processing unnecessary map data, .

Recently, Intelligent Transportation System (ITS) technology has been developed in the area and utilization and has become an important element in our daily life. Geographic Information System (GIS), which provides real-world geographical information by providing information, is one of the key linking technologies of ITS.

The important technology of GIS for ITS is generation and provision of digital map data. The generation of digital map data requires a large amount of geographical information of the real world to be collected and processed, thus requiring a lot of cost and time. In this regard, there are many studies for the generation of digital map data and various technologies are being developed.

Generally, digital map generation is done through aerial photographs and real world image analysis, and satellite images are used in recent years. However, these methods have a problem that the initial construction cost and time are long, and the time required for the changes to be reflected when the real world information is changed.

Also, a large amount of map data is required to obtain an accurate map, and there is a limit to the visualization of the generated information and the complicated spatial data.

Accordingly, it is an object of the present invention to reduce unnecessary map data access and harmonization by reading only map data that is not displayed at the time of a user's motion event, thereby minimizing the map generation time, The present invention provides an apparatus and method for generating a map in which information desired by a user can be displayed in real time.

According to an aspect of the present invention,

A map display terminal for receiving and displaying a zoom level and a space-initialized map when the initial map data is called based on the location information input by the user, and a map display terminal for displaying zoom levels of the initial map data based on the load data included in the initial map data And a map generation server for transmitting the generated map data to the map display terminal for performing spatial query,

The map display terminal may be configured to generate and transmit movement position information when a user's motion event occurs,

The map generation server calls the remaining map data excluding the space area displayed on the initial map based on the moving position information of the map display terminal and the boundary information of the spatial area of the initial map, And transmits the processed query to the map display terminal.

Preferably, the map generation server includes an initial map data reading unit for reading out initial map data of an area including positional information inputted by a user among a plurality of map data recorded in a database storing map data; And a zoom level setting and spatial query processing unit for setting a zoom level based on the load data included in the initial map data reading unit and processing the spatial query and transmitting the zoom level to the map display terminal, A motion detection unit for generating movement position information and boundary information of a spatial region of the initial map when a user's motion event is detected; And a map data calling unit for calling the map data of the remaining moving positions excluding the spatial area of the initial movement based on the boundary information of the spatial area of the initial map of the motion detection unit and transmitting the called map data to the zoom level setting and space query processing unit can do.

Preferably, the motion event may be one of up, down, zoom in, and zoom out based on the horizontal of the initial map.

Preferably, the movement position information may include coordinate values of the center of the current position due to the occurrence of a motion event, northwest, double east, southwest, and southeast.

The map generation method according to another embodiment of the present invention based on the apparatus described above is a method for generating map data based on load data included in initial map data of an initial position input by a user at a map generation server, An initial map generation step of performing a query and transmitting the query to the map display terminal; A movement position information generation step of generating movement position information when a motion event of a user occurs in the map display terminal; And a second step of calling the remaining map data excluding the space area displayed on the initial map based on the moving position information of the map display terminal and the boundary information of the spatial area of the initial map, processing the zoom level and the spatial query on the called map data, To the map display terminal.

According to the present invention, when a motion event on the user-based map is detected, map data of the remaining moving positions excluding boundary information of the initial map based on boundary information and moving position information of the queried space area on the map are retrieved from the database Thus, access and coordination of unnecessary map data can be reduced, and the map generation time can be shortened to a minimum. In addition, it is possible to display information desired by the user on the map in real time Effect is obtained.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further understand the technical idea of the invention. And should not be construed as limiting.
1 is a diagram showing a configuration of a map generating apparatus according to an embodiment of the present invention.
2 is a diagram showing a detailed configuration of a map generation server of a map generation apparatus according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating screen examples of a map display terminal output from the zoom level and spatial query processing unit of the map generating apparatus according to the embodiment of the present invention.
4 is a diagram illustrating a simulation process of a map generating apparatus according to an embodiment of the present invention.
5 is a diagram illustrating a screen display terminal according to a simulation result of a map generating apparatus according to an embodiment of the present invention.
FIG. 6 is a table showing map generation time based on the map generating apparatus according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . When an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

Hereinafter, a circuit service method according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a diagram showing a configuration of a map generating apparatus according to an embodiment of the present invention. Referring to FIG. 1, a map generating apparatus according to an exemplary embodiment of the present invention generates and visualizes an initial map, displays map data of a moving position when a user's movement event is generated, The map display terminal 100 and the map generation server 200. The map display terminal 100 may be a map display terminal and a map display server.

When the initial map data is called based on the position information inputted by the user by the map display terminal 100, the map generation server 200 can read the initial map data of the database matching with the location information of the user.

In addition, the administrator terminal 400 referred to in this specification includes not only a general desktop computer but also a smart phone such as a tablet PC, a smart box, a mobile communication terminal, a notebook computer, a workstation, a palmtop computer, PDA), a web pad, and the like, and is equipped with a microprocessor and has computing capability.

The map generation server 200 can transmit the initial map data of the zoom level to the map display terminal 100 with the zoom level set based on the information included in the initial map data.

Next, when a motion event of the user is generated from the map display terminal 100, the map generation server 200 generates map data of the movement position by the movement of the user when the movement position by the user's motion event is not recorded in the initial map data To the map display terminal 100. The map display terminal 100 shown in Fig.

Therefore, according to the embodiment of the present invention, the map is generated by calling only the map data of the moving position of the user, so that it is possible to generate the map for the moving position of the user using only a small amount of map data, and accordingly, the map generation time can be shortened.

FIG. 2 is a diagram illustrating a detailed configuration of the map generating server shown in FIG. 1. FIG. 3 shows an initial map according to the zoom level set by the zoom level setting and spatial query processing unit 230 shown in FIG. Examples are shown. 2 and 3, the map generation server 200 includes a database 210, an initial map data reading unit 220, a zoom level setting and spatial query processing unit 230, a motion event sensing unit 240, And a map data calling unit 250.

The initial map data reading unit 220 may be provided to read out initial map data of an area including the current position of the user among a plurality of map data recorded in the database 210 in which the map data is stored.

Here, the map data may include geographical information and space (shape) information.

The geographical information is not directly loaded from a server in which a map is prepared so as to be provided to a user by combining a map made up of a plurality of images corresponding to each scale, and a set of the manufactured images is called one by one and provided to the user.

On the other hand, spatial information is information for distinguishing a natural or artificial object existing in a space such as a ground, a basement, a corresponding space, an atmosphere, etc., and the position and shape of the object. That is, information on the position information existing in the space may include basic position coordinates and a shape such as a point, a line, and a polygon, a topological structure that is a relation between the shapes, and attributes between the position spaces. In addition, spatial information may include, for example, geographical features, geology, and natural environments, as well as standard node links for water and wastewater, gas, electricity supply facilities, and traffic information systems.

Here, the standard node link data for each road uses real time road information, construction, accident, and traffic information using a standard transportation network database established to apply a unified identification system to the national transportation network in the intelligent transportation system (ITS) CCTV, etc., and can be processed and used according to the usage field.

The traffic network data is composed of nodes and links. A node is a position formed by a property change of a running road of a vehicle such as a tunnel entrance and an intersection. A link is a line of a road connecting a node and a node, And has various shapes and attributes such as upper and lower lines and complicated intersections.

Such link data is made up of spatial objects and has attribute information shown in Table 1 below, and ROAD_RANK among the attribute information has attribute codes as shown in Table 2. Here, the attribute code can be applied to visualize the map data according to the scale level in the map.

[Table 1]

Figure pat00001

[Table 2]

Figure pat00002

The zoom level setting and spatial query processing unit 230 may be configured to set a predetermined zoom level according to the road code of the attribute information included in the link data. At this time, as the zoom level goes up to the upper level, the layers on the road overlap, and the user perceives the cognitive effect of the road. Referring to the attribute code shown in Table 3, the zoom level is set to the lower (zoom level of -18 or lower) zoom level in the case of the attribute code [103] of the general highway, as shown in Fig. 3 (a) As shown in b), in the case of the main trunk road, the zoom level is set to the upper zoom level, that is, the zoom level 0.

The set zoom level is transmitted to the map display terminal 100, and the map display terminal 100 displays the initial map by performing the zoom level and spatial query technique on the loaded initial map data.

That is, after the map display terminal 100 loads a map in the form of a tile, it generates and visualizes a web map based on a Web Map Tile Service (WMTS) based on the initial map data on which the zoom level and the spatial query have been performed.

For example, map data includes large and complex location information, which takes a long time to load the map data. As the map data capacity increases, the loading speed exponentially increases.

Therefore, WMTS is widely used in web maps as an optimized way to express map data through internet.

The WMTS is a method for creating a plurality of map images matching each accumulation, combining the maps and visualizing the maps more quickly, accessing the database and not loading the map data directly, but a set of prebuilt maps is called one by one and visualized , The display speed of the web map is improved.

Also, in order to visualize the desired information on the web map using the open API, the map is loaded in the form of a tile and the desired information is visualized on the loaded map.

Meanwhile, the motion sensing unit 240 of the map generating server 200 may sense a user's motion event including one of horizontal up and down and zoom in on the map through the map display terminal 100.

That is, the motion sensing unit 240 senses the movement position of the initial map to an area other than the spatial area, extracts coordinate values of the center of the sensed movement area, northwest, northeast, southwest, and southeast, Value is compared with the boundary area of the initial map, it is determined that a motion event has occurred.

Then, the motion sensing unit 240 transmits the boundary information of the spatial region of the inquired initial map and the movement position information to the map data calling unit 250.

The map data calling unit 250 determines occurrence of a motion event with respect to the zoom level of the user, performs the division of the main road and the detailed road, and processes the remaining space area query excluding the boundary information of the existing initial map data.

At this time, the spatial region query for the new movement position excluding the boundary information of the initial map data is processed using Asynchronous Javascript And XML (AJAX). As a result of data transmission and processing between the map display terminal 100 and the map generation server 200 using the AJAX, the entire page is not updated when a user's motion event occurs. That is, the map display terminal 100 can visualize only the spatial query of the called location data of the called location without renewing the new page.

FIG. 4 is a diagram illustrating a process of a simulation of the map generation server 200 shown in FIG. 1, FIG. 5 is a flowchart showing a process of a map generated by the motion sensing unit 240 and the map data calling unit 250 shown in FIG. Referring to FIGS. 4 and 5, a map of the display terminal 100 is shown. The open API of the map generation server 200 of the present invention is used to display the map data of the display terminal 100, The map can be displayed on the map display terminal 100.

Here, the map generation server 200 implements a visualization algorithm using a quad-core 3.60 GHz processor, 32 GB of memory, Java, JSP (Java Server Pages), HTML, Javascript, Uses the MBRContains function.

As shown in FIG. 5A, the map display terminal 100 displays the user's information on the initial map data, and as shown in FIG. 5B, When a motion event is detected, as shown in (c), the map data of some areas other than the initial map is called out from the database and displayed. (d), this series of processes is repeatedly performed. That is, when a motion event is detected at a movement position other than the map data shown in (c), the map data of the area other than the map shown in (c) is called from the database and displayed on the map display terminal 100.

Accordingly, when a motion event on the map of the user base is detected, the map data of the remaining movement positions excluding the border information of the initial map based on the boundary information and the movement position information of the queried space area on the map is called from the database, By visualizing the map data through the post-map display terminal, the map generation time can be shortened to the minimum.

FIG. 6 is a table showing the time taken to generate a map by the map generation server 200 shown in FIG. 1. Referring to FIG. 6, the map generation server 200 uses map data of 10,000 to 100,000 to map The time required for generating the map of the desired location area is 0.84-1.60 seconds according to the embodiment of the present invention. Therefore, according to the embodiment of the present invention It can be confirmed that the time required for the user to generate the map of the desired location area is shorter than the time for generating the existing map.

According to the embodiment of the present invention, map data of the remaining movement positions excluding the border information of the initial map based on the boundary information and the movement position information of the inquired space region on the map when the motion event on the map of the user- The map data can be displayed on the map in real time, and the map data can be displayed in real time on the map. In addition, .

In the embodiment of the present invention, each unit in the map generation server 200 operates in cooperation with each other and is configured to be dependent on the map generation server 200 for convenience of explanation, . It should be noted that the configuration related to the present invention will be described with the convenience of explanation. Servers for providing various functions such as authentication related to the open API in the related portal site providing the illustrated servers and map services as required, and advertisement related, etc. may be additionally included.

On the other hand, when a motion event on the map of the user base is detected, the map data of the remaining movement positions excluding the border information of the initial map based on the boundary information and the movement position information of the inquired spatial region on the map are called from the database, The map generation method according to another embodiment of the present invention for visualizing the map data through the rear map display terminal includes the initial map data reading unit 220, the zoom level setting and spatial query processing unit 230, the motion sensing unit 240, And the map data calling unit 250, detailed abbreviations are omitted.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

Based on the boundary information and the movement position information of the query space area on the map when the user-based motion event is detected on the map, the map data of the remaining movement positions excluding the boundary information of the initial map is called from the database, It is possible to reduce the access and coordination of unnecessary map data by minimizing unnecessary map data and shorten the map generation time according to the visualization through the display terminal and to provide a map generating apparatus and method capable of realizing the information presentation desired by the user on the map It is possible to make a very great progress in terms of accuracy and reliability of operation and further performance efficiency of the operation of the apparatus, It is an available invention.

Claims (5)

A map display terminal for receiving and displaying an initial map having a zoom level and a space when the initial map data is called based on the location information inputted by the user;
And a map generation server for transmitting the initial map data to the map display terminal which performs zoom level and spatial query of the initial map data based on the load data included in the initial map data,
The map display terminal,
And generate and transmit movement position information when a user's motion event occurs,
The map generation server includes:
The remaining map data excluding the space area displayed on the initial map is called based on the movement position information of the map display terminal and the boundary information of the space area of the initial map, and the zoom level and the space query are processed for the called map data, To the display terminal.
The map generation system according to claim 1,
An initial map data reading unit for reading initial map data for an area including positional information input by a user among a plurality of map data recorded in a database storing map data;
Setting a zoom level based on the load data included in the initial map data reading unit, processing the spatial query, and transmitting the processed zoom query to the map display terminal, and a space query processor,
A motion detection unit for generating movement position information and boundary information of a spatial region of the initial map when a user's motion event is detected on an initial map of the map display terminal; And
And a map data calling unit for calling the map data of the remaining moving positions excluding the spatial region of the initial movement based on the boundary information of the spatial region of the initial map of the motion detection unit and transmitting the called map data to the zoom level setting and spatial query processing unit Wherein the map generating device comprises:
3. The method of claim 2,
Wherein the first map is one of up, down, zoom in, and zoom out based on the horizontal of the initial map.
4. The method according to claim 3,
And coordinates values of the center of the current position due to the occurrence of the motion event, northwest, double east, southwest, and southeast.
An initial map generation step of performing zoom level and spatial query of initial map data based on load data included in initial map data of an initial position input by a user at a map generation server and transmitting the zoom level and spatial query to the map display terminal;
A movement position information generation step of generating movement position information when a motion event of a user occurs in the map display terminal; And
The remaining map data excluding the space area displayed on the initial map is called based on the movement position information of the map display terminal and the boundary information of the space area of the initial map, and the zoom level and the space query are processed for the called map data, And transmitting the map to the display terminal.




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Cited By (1)

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Publication number Priority date Publication date Assignee Title
US10991117B2 (en) 2018-12-23 2021-04-27 Samsung Electronics Co., Ltd. Performing a loop closure detection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10991117B2 (en) 2018-12-23 2021-04-27 Samsung Electronics Co., Ltd. Performing a loop closure detection

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