KR102367425B1 - Method of displaying risk of road section in map according to weather, map service system performing the same, and web server used therein - Google Patents

Abstract

Disclosed are a method for displaying a map of road section risk according to weather performed in a map service system, a map service system performing the same, and a web server used therefor. The map display method includes the steps of: a web server analyzing a map search request received from a user terminal; and the web server using a background map DB (Database) server and a risk DB server to search information including a location, screen center coordinates, and scale information. and generating, by the web server, map information obtained by meshing up the background map image received from the background map DB server and the risk information received from the risk DB server.

Description

A method of displaying a map of road section risk according to weather, a map service system performing the same, and a web server used therefor }

The present invention relates to an electronic map display technology, and more particularly, to a technology for displaying weather information on an electronic map.

Recently, various electronic map services using wired/wireless communication technology, satellite positioning technology, map information technology, search engine technology, etc. have been provided. The electronic map may be displayed in various forms such as 2D (2-dimensional), 2.5D, and 3D according to a display method. In addition, the electronic map may be variously classified into an indoor map, a topographic map, a traffic map, a city map, a weather map, a theme map, and the like according to the type of display object. The various types of maps may be displayed on the screen of the electronic device according to the purpose of use.

Recently, various additional services using electronic maps have appeared. The electronic map may display points of interest (POI), advertisements, news, etc. as detailed information, as well as map-specific geographical feature information. Also, on the electronic map, overlay information such as traffic information may be displayed in addition to existing map information.

However, displaying too much information or listing information may make it difficult for a user to immediately find desired information. In addition, if too much information is displayed on a screen of a limited size, it is difficult for a user to find a desired location or information, and the user has to perform an additional operation such as enlargement to find the desired location or information.

In addition, the conventional map service does not provide map data indicating the degree of risk of road sections according to weather, such as snow, rain, cloudy or clear, for a user to easily recognize. This has a disadvantage in that it is not possible for the user to easily grasp the road conditions according to the weather and take appropriate measures accordingly. Korean Patent Publication No. 10-1087486 discloses a method for displaying a risk level with an icon. However, this type of risk level display has a problem in that the user cannot easily recognize the level of risk in a map on which various icons and texts are provided.

In addition, Korean Patent Application Laid-Open No. 10-2009-0074881 discloses a method of displaying weather information on a background screen. However, there is a problem in that the level of risk is displayed for each road section so that the user can easily grasp the level of risk across the road at a desired location in advance.

Therefore, there is a need for a method that can appropriately display important information such as road section risk information according to weather among various information to the user on the map.

Korean Patent Publication No. 10-1087486 (announced on November 28, 2011) Korean Patent Publication No. 10-2009-0074881 (published on Jul. 8, 2009)

The present invention relates to a method for displaying a map of a road section risk according to weather that provides a map in which risk information for each road section is easily recognized by a user when providing a map of a location that a user wants to inquire in a map service system, and performing the same It aims to provide a map service system that

According to an embodiment of the present invention, a method for displaying a map of road section risk according to weather performed in a map service system includes the steps of: analyzing, by a web server, a map search request received from a user terminal, wherein the web server is a background map DB (Database) server and transmitting search information including a search location, screen center coordinates, and scale information to a risk DB server, and the background map image received from the background map DB server by the web server and the risk information received from the risk DB server and generating mesh-up (MESH-UP) map information.

In the step of generating the mesh-up (MESH-UP) map information, the figure object is expressed using the spatial information value of the risk information, and the head thickness, color and A risk layer is generated by applying at least one of the patterns to the figure object, and the risk layer is overlaid on the layer of the background map image to mesh-up.

The map display method may further include the steps of: the web server receiving a map search request from a user terminal; and transmitting, by the web server, the mesh-up map information to the user terminal.

Another embodiment of the present invention, a map service system for performing a method of displaying a map of road section risk according to weather, analyzes a map search request received from a user terminal, and searches a location with a background map DB (Database) server and a risk DB server and a web server that transmits search information including screen center coordinates and scale information, and transmits map information obtained by meshing up the received background map image and risk information to the user terminal.

The mesh-up expresses a figure object using the spatial information value of the risk information, and applies at least one of a pre-designated head thickness, color, and pattern to the figure object using the risk grade value of the risk information. It may be characterized in that a risk layer is created, and the risk layer is overlaid on the layer of the background map image to mesh-up.

the map service system extracts a background map tile corresponding to the search location, screen center coordinates, and scale information, and transmits a raster image of the extracted background map tile to the web server; and the search location; It may further include a risk DB server that extracts the risk information corresponding to the screen center coordinates and scale information, converts the extracted risk information into a vector structure, and transmits the extracted risk information to the web server.

The map service system may further include a user terminal including a screen through which a user can input a search request and inquire a map.

A web server used in a map service system for performing a method of displaying a map of road section risk according to weather according to another embodiment of the present invention analyzes a map search request received from a user terminal, and provides a background map DB (Database) server and risk level It is characterized in that it transmits search information including search location, screen center coordinates, and scale information to the DB server, and transmits map information obtained by meshing up the received background map image and risk information to the user terminal. .

The map expression method, map service system, and web server of the road section risk according to the weather of the present invention change the shape and color of the road section risk according to the weather, etc. according to the risk factor and the risk class, so that the risk level on the background map (raster) layer By providing the (vector) layer overlaid, the user can easily recognize the level of risk. In addition, through this, the user can prepare in advance for dangerous situations such as modifying the travel route and checking vehicle equipment.

1 is a block diagram of a system for performing a map display method of a road section risk according to weather according to an embodiment of the present invention.
2 is a flowchart of a method for displaying a map of a road section risk according to weather according to an embodiment of the present invention.
3 is a diagram illustrating a mesh-up (MESH-UP) of a background map layer and a risk layer according to an embodiment of the present invention.
4A to 4C are examples of a map inquiry screen configuration according to an embodiment of the present invention.
5A and 5B are flowcharts of a method for producing a background map according to an embodiment of the present invention.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including first, second, etc. may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. and/or includes a combination of a plurality of related description items or any of a plurality of related description items.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but another component may exist in between. On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this application, "includes." Or "have." The term such as is intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features, number, step, operation, element, part It should be understood that it does not preclude the possibility of the existence or addition of those or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings, and in the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numbers regardless of reference numerals and overlapped therewith. A description will be omitted.

1 is a block diagram of a map service system according to an embodiment of the present invention.

The map service system 10 includes a user terminal 100 , a communication network 200 , a web server 300 , a background map DB server 400 , and a risk DB server 500 .

The user terminal 100 may be any electronic device having a display unit, and includes a personal computer (PC), a laptop, a notebook computer, a personal digital assistant (PDA), a navigation device, a mobile phone, a smart phone, a tablet computer, and the like. include A user may use the map providing service by accessing a website that provides a map providing application by using the user terminal 100 or by installing an application (or APP) in the user terminal 100 .

When using the map providing service, a map related to the current location or the last searched location may be automatically inquired on the start screen.

The user inputs a location to search for a map in the user terminal 100 . The user enters the name of a point (eg, administrative district name such as province/city/gun/gu, road name, building name, lot number, etc.) as the location to be inquired, and searches a map centered on that point, or You can search the map including the route by entering the starting point and the destination.

The user may directly input the location to be inquired on the user interface screen provided by the map providing application, or when using a terminal with a built-in GPS function, the current location may be automatically entered.

In addition, the user may adjust the scale so that the map searched on the user interface screen can be enlarged or reduced to be viewed. The scale may be adjusted by placing a scale adjusting bar on one side of the user interface screen, directly inputting a numerical value such as a level, or using an enlargement/reduction gesture.

When the user inputs a location (or route) to search for a map, the user terminal 100 displays the location (path) input to the web server 300 through the connected communication network 200, the screen center coordinates (longitude and latitude coordinates (x) , y)) and scale (representation level) to send a map search request.

The communication network 200 may connect a plurality of user terminals 100 and the web server 300 . That is, the user terminals 100 may access the web server 300 through the communication network 200 . The communication network 200 is a wired network such as LAN (Local Area Networks), WAN (Wide Area Networks), MAN (Metropolitan Area Networks), ISDN (Integrated Service Digital Networks), or wireless LAN, CDMA, Bluetooth, satellite communication, etc. It may include, but is not limited to, a wireless network.

After receiving the map search request from the user terminal 100, the web server 300 analyzes the location (or path), screen center coordinates, scale, etc. included in the map search request, and then connects the background map DB server 400 with the level of risk. The search information is transmitted to the DB server 500 .

In addition, the web server 300 meshes up the background map tile (raster image) information and the risk (vector) information received from the background map DB server 400 and the risk DB server 500 to the user terminal ( 100) is provided.

The background map DB server 400 is a server that stores a background map tile set according to a scale level, and may be an external server when a background map provided from the outside is used. For example, Naver and Daum provide background maps through the OPEN API, so you can search and use background maps from these external servers. In addition, it is also possible to directly create a background map tile set for each expression level, store it in an internal server, and use it.

The risk DB server 500 is a server that stores the risk of road sections according to weather conditions such as rainfall and snowfall for each section (link). This risk level may be rainfall or snowfall, as well as other weather conditions (eg, glare, wind speed, fog, etc.). Also, this risk may be a result of calculating a risk grade through various risk analysis algorithms.

In the map service system 10 , at least two of the web server 300 , the background map DB server 400 , and the risk DB server 500 may be configured as one device or may be configured with different devices.

2 is a flowchart of a method for displaying a map of a road section risk according to weather according to an embodiment of the present invention.

Referring to FIG. 2 , the user inputs a location (or route) to search for a map through the map search screen of the user terminal 100 ( S1 ). As for the location, the user may input the location that the user wants to search directly on the map search screen as administrative district names such as provinces/city/gun/gu/dong, building names, road names, lot numbers, etc., in the case of a user terminal with a built-in GPS function When you want to inquire a map for the current location, the current location may be automatically input. Also, you can search for a map including a route by inputting departure and destination information. In the case of a user terminal with a built-in GPS function, the current location may be automatically input as a starting point or a destination when searching for a route.

The user terminal 100 transmits the map search request including the input location (or route) information and the screen center coordinates and scale information of the user terminal to the web server 300 through the wired/wireless communication network 200 (S2).

The web server 300 receives the map search request and analyzes the received map search request to extract input location (or route) information, screen center coordinates, and scale information (S3). The extracted search information including the input location (or path) information, screen center coordinates, and scale information is transmitted to the background map DB server 400 and the risk DB server 500, respectively (S4 and S5).

The background map DB server 400 stores the background map tile sets produced for each expression level in the background map DB server 400 . That is, the background map is provided in the WMTS (Web Map Tile Service) method, and a background data set for each expression level is stored and used in the background map DB server 400 .

Background maps provided by Naver and Daum as open APIs can also be used.

The background map DB server 400 receives the search information and extracts a map tile set corresponding to the search location (or route), screen center coordinates, and scale. Table 1 is an example of the configuration of information displayed on the background map, and information from information 67 to information 1 is displayed on the background map as it goes from a small scale to a large scale. For example, in the case of a national Internet map, information from information 67 to information 1 is displayed on the background map as it goes from level 6 (small scale) to level 19 (large scale). Accordingly, the background map DB server 400 extracts a set of display level background maps corresponding to the screen center coordinates and scale included in the search information.

number information item number information item One building entrance 36 Leisure sports 2 new address building number 37 Housing site development zone 3 subway facilities 38 educational institution
(University) 4 road traffic facility 39 administrative agency
(city, county offices) 5 new address road name 40 administrative agency
(Provincial and Metropolitan Government Offices) 6 restaurant 41 Attractions 7 overpass 42 Administrative district name 8 building in the district 43 Administrative district name 9 religious facilities 44 IC name 10 subway entrance number 45 name of administrative district 11 street name 46 natural product 12 intersection name 47 main road 13 underpass name 48 JC name 14 market 49 bridge 15 industrial facilities 50 national road 16 major finance 51 national road number 17 special street 52 provincial park 18 overpass 53 airport 19 administrative agency
(dong office) 54 highway name 20 educational institution
(elementary and high school) 55 highway number 21 residential facilities 56 A national park 22 cultural living facilities 57 city highway 23 Tunnel name 58 ferry route 24 Park name 59 Name of administrative district group 25 Administrative district name 60 Administrative district city name 26 Administrative district name 61 province name 27 hiking trail 62 highway 28 transportation facilities 63 provincial border 29 Accommodation 64 national border 30 medical facility 65 major cities 31 subway station name 66 sea name between countries 32 subway line 67 country name 33 bridge 34 Bridge name 35 National railway station name

The risk server 500 receives the search information and extracts the risk information of the corresponding area.

In an embodiment of the present invention, the risk information may be a risk grade according to rainfall or snowfall for each road section (link). That is, it may be information calculated through various risk analysis algorithms for a road risk grade (eg, classified as high, medium, or low) according to rainfall or snowfall for each link dividing road sections.

For example, the road hazard rating can be calculated as follows. First, for a specific period, 1-minute meteorological data are aggregated for each link (road center line from the starting entry point to the ending exit location) in 5-minute units, and the 5-minute unit precipitation is calculated using the daily accumulated precipitation for 5 minutes. Meteorological information is processed in units. Then, for the same period, traffic data in 1-minute units is aggregated for each link in units of 5 minutes, vehicle speed is written as an arithmetic average, and traffic volume is processed in units of 5 minutes by summing data for each hour. Finally, by fusion of the weather information, the traffic information, and the geometric structure information for the link around the accident, the risk grade of the road section according to the weather information such as rainfall/snowfall can be calculated by the model calculation formula.

Table 2 is an example of the risk information table stored in the risk DB server (500).

link
ID road
information rainfall
risk class space
information 001 Gyeongbu Expressway award

002 Gyeongbu Expressway middle

003 Central Expressway under

… … …

As shown in Table 2, risk class information and spatial information (link coordinates) are stored in the risk DB server 500 for each link ID that distinguishes road sections. The background map DB server 400 transmits the background map tiles in the form of an extracted image file (eg, PNG) to the web server 300 (S8).

The risk DB server 500 transmits the risk information corresponding to the location requested by the user among the stored risk information to the web server 300 in a vector format (S9).

The web server 300 primarily expresses the figure object using the spatial information value of the risk information received from the DB server 500, and uses the risk grade value to have a predetermined thickness (eg, head thickness), A risk layer (vector layer) is created by applying a design such as color (eg, red, yellow, green, etc.), pattern (eg, solid, stripe, etc.). Thereafter, a risk layer (vector layer) is overlaid on the secondly received background map image layer (raster layer) to perform a mesh-up (MESH-UP) (S10).

3 is a diagram illustrating a mesh-up (MESH-UP) of a background map layer and a risk layer according to an embodiment of the present invention. As shown in FIG. 3 , a risk level map is generated by overlaying a displayed risk layer (vector layer) 700 using the received vector information on the background map image tile layer (raster layer) 600 . In this case, the level of risk may be displayed on the map by changing the shape according to the risk factor or by changing the color according to the risk level. For example, if the risk factor is rain, the link may be displayed in a solid form, and if the risk factor is snowfall, the link may be displayed in the form of a stripe. In addition, the link may be displayed in red (R) when the risk level is 'high', yellow (Y) when the risk level is 'medium', and green (G) when the risk level is 'low'.

The web server 300 transmits a map indicating the mesh-up risk level to the user terminal 100 through the wired/wireless communication network 200 (S11).

The user terminal 100 displays a map indicating the received risk level on the screen. The user may adjust the scale so as to enlarge or reduce the searched map on the user interface screen of the user terminal 100 to view it. The scale may be adjusted by placing a scale adjusting bar on one side of the user interface screen, directly inputting a numerical value such as a level, or using an enlargement/reduction gesture.

4A to 4C are examples of a map inquiry screen configuration according to an embodiment of the present invention. As shown in FIG. 4A , the map service application may provide a map including a degree of risk by dividing the screen of the user terminal 100 into a map area 110 and a legend area 120 .

The map area 110 is an area for displaying a map on which the degree of risk is displayed as shown in FIG. 4B .

The legend area 120 is an area for displaying information on risk levels according to display target risk factors and shapes/colors. As shown in FIG. 4B , risk factors may be selected whether to be displayed in the form of a toggle switch or the like.

The map area 110 and the legend area 120 may be divided left and right as shown in FIGS. 4A to 4C , but may also be divided vertically or diagonally, and the size of each area is also adjustable. Also, the legend area 120 may be hidden and only the map area 110 may be displayed.

In Fig. 4c, a screen (4c-1) displaying both the map area displaying the rainfall risk and the legend area, a screen displaying only the map area (4c-2), a screen for selecting the rainfall risk display (4c-3), and the rainfall risk An example of the screen 4c-4 in which no display is selected is shown.

In the method of displaying the map of the road section risk according to the weather according to an embodiment of the present invention described above, a background map provided from the outside may be used, or a background map may be produced and used by itself.

5A is a flowchart of a background map production method according to an embodiment of the present invention. Referring to FIG. 5A , the background map production method includes a background data processing step (S100), a map design policy establishment step (S200), a data set configuration step for each expression level (S300), an MXD file creation and verification step (S400), a map tile It includes a generation step (S500), a tile inspection and supplementation step (S600), and a tile conversion and compression step (S700).

In the background data processing step (S100), a base and separate DB layer set is configured for source data such as a national basic map, a new address, and a serial cadastral map, and background data is processed to improve readability. In addition, data is constructed by selecting separate construction data such as public transportation layer and leisure layer.

In the map design policy establishment step (S200), a color policy for each background layer and LOD (Level Of Detail) is established, and guides (line, plane) for each data type are established. It also builds icon files and develops fonts.

In the step of constructing a data set for each expression level ( S300 ), a layer set in which information to be displayed for each expression level is displayed is constructed by dividing the scale level into predetermined steps. In addition, it is possible to establish a set of expression periods for each level, and select a period and font size according to the characteristics of each level.

In the MXD file creation and verification step (S400), the MXD file creation and verification step (S400) is an MXD (Map Document) that stores information such as the color and size of the layer color, icon, period, and font to be applied to the data set for each expression level. ) file is created. In addition, by performing sample tiling, visual pre-inspection such as map design, LOD, cycle overlap, and hierarchical order is performed. In the tile generation step ( S500 ), a map tile rendered to a scale level to provide a service suitable for a Korean map is generated by applying the Open Geospatial Consortium (OGC) standard mutatis mutandis.

In the tile inspection and supplementation step ( S600 ), automatic inspection is performed using a self-developed program (eg, an empty tile inspection machine, etc.). In addition, visual inspection is performed through the tile viewer, and error data are supplemented by creating inspection tables.

In the tile conversion and compression step ( S700 ), a file type is changed using a tile file converter. It also compresses files to improve upload speed.

The background map tile generated through the above-described steps may be stored in the background map DB server 400 and used for the map service.

A number of embodiments of the invention have been described. Nevertheless, it is to be understood that the foregoing description is for illustrative purposes only and does not limit the scope of the invention as defined by the scope of the following claims. Accordingly, other embodiments are also within the scope of the following claims. For example, various modifications may be made without departing from the scope of the present invention. Additionally, some of the steps described above are order independent and may be performed in an order other than that described.

100: user terminal
110: map area 120: legend area
200: communication network 300: web server
400: background map DB server 500: risk DB server
600: background map layer 700: risk layer

Claims (8)

In the map display method of the road section risk according to the weather performed in the map service system,
analyzing, by the web server, a map search request received from the user terminal;
transmitting, by the web server, search information including a search location, screen center coordinates, and scale information to a background map DB (Database) server and a risk level DB server; and
generating, by the web server, map information obtained by meshing up the background map image received from the background map DB server and the risk information received from the risk DB server;
The risk information is a risk grade according to rainfall or snowfall for each link that distinguishes road sections,
In the step of generating the mesh-up (MESH-UP) map information, the figure object is expressed using the spatial information value of the risk information, and the head thickness, color and creating a risk layer by applying at least one of the patterns to the figure object, overlaying the risk layer on the layer of the background map image to mesh-up,
When the risk factor is rain, the link is displayed in a solid form, and when the risk factor is snowfall, the link is displayed in the form of a stripe. delete delete In the map service system for performing a map display method of road section risk according to weather,
By analyzing the map search request received from the user terminal, the search information including the search location, screen center coordinates and scale information is transmitted to the background map DB (Database) server and the risk DB server, and the received background map image and risk information are stored Including a web server for transmitting mesh-up (MESH-UP) map information to the user terminal,
The risk information is a risk grade according to rainfall or snowfall for each link that distinguishes road sections,
In the step of generating the mesh-up (MESH-UP) map information, the figure object is expressed using the spatial information value of the risk information, and the head thickness, color and creating a risk layer by applying at least one of the patterns to the figure object, overlaying the risk layer on the layer of the background map image to mesh-up,
A map service system, characterized in that when the risk factor is rainfall, the link is displayed in a solid form, and when the risk factor is snowfall, the link is displayed in the form of a stripe. delete 5. The method of claim 4,
a background map DB server that extracts a background map tile corresponding to the search location, screen center coordinates, and scale information, and transmits a raster image of the extracted background map tile to the web server; and
The map service system further comprising: a risk DB server for extracting risk information corresponding to the search location, screen center coordinates, and scale information, converting the extracted risk information into a vector structure, and transmitting the extracted risk information to the web server. 5. The method of claim 4,
The map service system, further comprising a user terminal including a screen through which a user can input a search request and inquire a map. As a web server used in a map service system that performs a map display method of road section risk according to weather, it analyzes a map search request received from a user terminal, and searches location with a background map DB (Database) server and a risk DB server; Search information including screen center coordinates and scale information is transmitted, and map information obtained by meshing up the received background map image and risk information is transmitted to the user terminal,
The risk information is a risk grade according to rainfall or snowfall for each link that distinguishes road sections,
In the step of generating the mesh-up (MESH-UP) map information, the figure object is expressed using the spatial information value of the risk information, and the head thickness, color and creating a risk layer by applying at least one of the patterns to the figure object, overlaying the risk layer on the layer of the background map image to mesh-up,
A web server, characterized in that when the risk factor is rain, the link is displayed in solid form, and when the risk factor is snow, the link is displayed in the form of a stripe.

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