KR100375553B1 - Geographic Information Service Method of Using Internet Network - Google Patents

Abstract

The present invention relates to a geographic information service method using an internet network that provides a map made using image data of satellites and provides a 3D geographic information service.

The geographic information service method using the Internet network of the present invention has a form in which a vector command, a raster command, a search window, a video window, and a screen moving key are included in an initial menu and a vector data and raster data are synthesized in the background of the Internet user's terminal. Sending the initial image showing the map, and if the Internet user selects the Vector command from the initial menu, displays the map as vector data only, and designates a specific region on the map represented by the vector data. According to the step of expanding and displaying locally, and when the Internet user selects the raster command from the initial menu, the map is displayed only with the raster data, and if a specific area is designated on the map displayed with the raster data, the raster data of the corresponding area is localized according to the leveling scheme. Steps to zoom in and use the Internet If the user enters a search term in the search box in the initial menu, the user searches for a feature name identical to the search term and displays a unit area including a feature having the same name as the search word on the screen, and an internet user displays a video on the map. If the specific unit region that holds the data is designated, the method includes providing a video within the video window.

According to the present invention, the satellite image and the vector data of high resolution can be superimposed / integrated to provide visually superior and service maps containing the latest geographic information on the Internet. In addition, since the map is produced using satellite image data, it can be easily upgraded to the latest information. Furthermore, a map with high precision can be produced using high resolution satellite image data and serviced on the Internet. In addition, it is possible to service live 3D data and video data together using satellite images and vector data.

Description

Geographic Information Service Method of Using Internet Network {Geographic Information Service Method of Using Internet Network}

The present invention relates to a geographic information service method using an internet network. In particular, the present invention provides a map prepared by using image data of satellites to provide a three-dimensional geographic information service. It relates to a geographic information service method using.

Recently, as the development of a location tracking device such as a navigation system is accelerated, a high-precision map is required for not only aircraft, vehicles, ships, but also various electronic and service industries.

Map information currently provided using the Internet network is classified into vector data and raster data. Vector data is a form in which a computer can recognize the meaning of an object (symbols, figures, characters, etc.), and raster data is a form in which only information (positions and concentrations) about a point can be recognized. In order to provide map information using an internet network, geographical information of a specific region is constructed using vector data and raster data, and the constructed data is stored in each database. In this way, the data stored in the database is displayed on the web browser at the request of the Internet network user.

However, such a conventional map information providing method has a limitation in visual reading of geographic information because only two-dimensional planar maps can be provided. In addition, it is difficult to maintain the freshness and reliability of the data because the map is already used as the basic data. In addition, many maps are already lost because all the information on the surface is generalized or abstracted. In particular, as more and more small-scale maps, more and more geographic information must be omitted and distorted. In order to solve these problems, providing detailed geographic information increases the amount of data. In addition, since accumulated geographic information and large-scale geographic information are separately constructed, geographic information must be constructed in the same region. Furthermore, in order to improve the visual readout effect, it is necessary to provide 3D map information, but in this case, since a separate 3D data needs to be constructed, enormous costs are required, which causes a lot of difficulties in reality.

Accordingly, an object of the present invention is to provide a 3D geographic information service together with integrated services of vector and raster containing the latest information by providing a map made using image data of satellites. It relates to a geographic information service method using a network.

1 is a flow chart illustrating a process in which data according to the present invention is collected, processed and edited and stored in a unified format.

2A and 2B are diagrams for explaining the concept of the index system shown in FIG.

3A and 3B are diagrams illustrating data that has undergone the tiling process and the leveling process illustrated in FIG. 1.

4 is a flowchart illustrating a process of displaying raster data in a web browser according to an embodiment of the present invention.

5 is a flowchart illustrating a process of displaying vector data in a web browser according to an embodiment of the present invention.

6 is a flowchart illustrating a process of displaying vector and raster data in a web browser according to an embodiment of the present invention.

7 is a flowchart illustrating a search process according to an embodiment of the present invention.

8 is a flowchart illustrating a process of outputting a video to a web browser according to an embodiment of the present invention.

In order to achieve the above object, a geographic information service method using an internet network of the present invention includes an initial menu including a vector command, a raster command, a search box, a video window, and a screen moving key in a terminal of an internet user, and vector data and raster in the background thereof. Sending an initial image showing a map in which the data is synthesized, and if the Internet user selects the Vector command from the initial menu, displays the map as vector data only, and designates a specific region on the map represented by the vector data. When the vector data is enlarged locally according to the leveling scheme, when the Internet user selects the raster command from the initial menu, the map is displayed only with the raster data, and if a specific region is designated on the map marked with the raster data, the raster data of the region is displayed. Local magnification display according to the leveling scheme The search method may include: searching for a feature name identical to the search term and expanding and displaying a unit area including a feature having the same name as the search word when the Internet user inputs a search term in the search box in the initial menu; If an internet user designates a specific unit region that holds the video data on the map, providing the video within the video window.

Other objects and features of the present invention in addition to the above objects will become apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 1 to 8.

1 is a flowchart illustrating a method in which geographic information is stored in a database according to an embodiment of the present invention.

Referring to FIG. 1, first, a large-scale numerical map and ortho-corrected high resolution image data are collected. (S2, 4) Orthodontic correction corrects an error such that a feature included in the image data has an orthogonal projection characteristic. That's how. The numerical map and ortho-corrected high resolution image data collected in steps S2 and S4 are superimposed (S6). Based on the coordinate information of the digital map so that the digital map and the satellite image data mapped in step S6 may have the same location information. (S8) The digital map is precisely reprocessed using the geometrically corrected image data in step S8. (S10) The new digital map generated in step S10 is stored in a database. In addition, an index is provided to systematically service the information (S12). Such an index is numerically represented as shown in FIG. 2A. For example, if "1" of a thousand units among the numbers shown in FIG. 2 means the Seoul area, then "67" after it means that it is the 67th area of the Seoul area. When such an index is stored in the database, it has a file name of 167. In addition, when 1679 of FIG. 2A is further subdivided, it is divided into three horizontal and three vertical regions as shown in FIG. 2B. That is, the 1679 area is divided into nine regions. When such an index is stored in the database, it has a file name of 1679. When the server receives a request for geographic information about a specific region from a user, the server displays the requested region information by referring to a file name stored in a database. Raster data among the indexed data in step S12 is subjected to an image tiling process. (S14) Image tiling sets an area of maximum scale within a range allowed by resolution, and subdivids the area value into a tile structure. After the image tiling process is performed in step S14, an arbitrary layer layer is set to generate tile images for each range of the image area (S16). FIG. 3A illustrates data of an arbitrary level that has passed through S16. The data is divided into nine areas. When the user selects a specific area to be enlarged, the selected area is enlarged as shown in FIG. 3B. If there is a lower level of data displayed as shown in FIG. 3B, the user may continue to load the lower level image on the screen. In addition, the image data can be loaded on the screen by overlaying the image data on the main road or the main building in a vector form. Data that has passed the step S16 is divided and stored according to each level so that it can be displayed in a web browser. (S18) For example, if image data having three layers is stored, one image data is stored in one layer, and the second layer is stored in two layers. In addition to storing nine image data, 81 image data are stored in three layers. That is, 91 pieces of data are stored in the database. Among the data to which the image index is assigned in step S12, the vector data undergoes the vector tiling process and the vector leveling process. do. However, vector data has a different range of information included for each level. This is to prevent unnecessary vector material from being displayed when the vector data displays a wide range of images. For example, if the information on the administrative boundary (the old boundary, the winter boundary) is displayed at the first level including the widest range, the information on the administrative boundary, street, park, apartment complex, etc. is displayed at the second level. At the third level, administrative boundaries, boulevards, parks and apartments. Information on the main buildings, major facilities, etc. is displayed. In other words, the narrower the range of vector data, the more detailed the feature information will be. Therefore, each vector data has a similar file size. The data that has undergone the vector tiling process and the vector leveling process in steps S20 and S22 is divided into pieces of sizes corresponding to each level so as to be displayed in a web browser. (S24) In the level system in steps S18 and S24, The data divided accordingly are stored in a database. (26) At this time, vector and raster data are stored and managed as one file. To this end, the file header has coordinate values of the entire area and size information of the entire file, and the vector header has information on the type of figure and the number of figures. In addition, the database stores video information for displaying spatial information of a specific region. Data divided in steps S18 and S24 may be stored in respective databases without going through step S26.

4 is a flowchart illustrating a process of outputting raster data to a web browser of an internet user.

Referring to FIG. 4, first, an internet user accesses a server through a wired / wireless internet network (S26). At this time, an initial screen is output to a web browser (or a video viewer or an image map viewer) of the internet user. ) The initial screen displayed on the web browser includes images of Seoul, function buttons, vector on / off buttons, raster on / off buttons, search boxes, and video windows. Here, the function button allows reference to adjacent areas of the displayed data when vector data and / or raster data is displayed on the screen. Therefore, the function buttons include buttons that can be moved in the up, down, left, right, and diagonal directions, as well as buttons that can be moved to a higher level. The vector on / off button and the raster on / off button remain on on the initial screen. The user selects only the raster button among the initial screens output in step S28. (S30) After the raster screens of all regions are displayed as initial screens in a web browser, the Internet user clicks an area to be viewed in detail. If a specific region is clicked, an applet is executed to detect the selected area and request the detected file name from the raster server. If there is data of the region clicked in the step S32, raster data is output to the web browser of the Internet user. (S34) If there is no data of the region clicked in the step S32, an error message is output to the web browser of the Internet user and the Internet is displayed. Wait for user input.

5 is a flowchart illustrating a process of outputting vector data to a web browser of an Internet user.

Referring to FIG. 5, an internet user first accesses a server through a wired / wireless internet network (S36). At this time, an initial screen is output to a web browser of an internet user. (S38) The user selects only the vector button among the initial screens output in step S38. (S40) After the vector screen of the entire region is output to the web browser, the Internet user clicks the region to be viewed in detail. (S42) If the specific region is clicked in step S42, the applet is executed to detect the selected region and the corresponding file name. Find and ask the vector server. If there is data of the region clicked in the step S42, the corresponding data is output to the web browser of the Internet user. (S44) If there is no data of the region clicked in the step S42, an error message is output to the web browser of the Internet user and the Internet is displayed. Wait for user input.

6 is a flowchart illustrating a process of outputting vector and raster data to a web browser of an internet user.

Referring to FIG. 6, first, an internet user accesses a server through a wired / wireless internet network (S46). At this time, an initial screen is output to a web browser of an internet user. (S48) The user clicks a region to be viewed in detail in the entire Seoul image included in the initial screen. (S50) If a specific region is clicked in step S50, an applet is executed to detect a selected region and find a corresponding file name. Ask the server. If there is integrated data of the vector and raster in the region clicked in the step S50, the server outputs the integrated data to a web browser of the Internet user in step S50. It prints an error message to the user's web browser and waits for input from the Internet user.

7 is a flowchart illustrating a search process for a specific feature by an Internet user.

Referring to FIG. 7, first, an internet user accesses a server through a wired / wireless internet network (S54). At this time, an initial screen is output to a web browser of an internet user. If a search word is input to a search box included in the initial screen output in step S56 and the search is executed, the applet is executed to detect the search word and request a search from the database server. (S60) If the same feature as the search word is found in step S60, a vector file including the corresponding data is searched. (S62) The server searches the web browser of the Internet user of the content searched in step S62. (S64, S66) If the information corresponding to the search word does not exist in the step S60, an error message is output to the user's web browser, and then the state is switched to the search standby state (S68, S66). )

8 is a flowchart illustrating a process of executing a video file.

Referring to FIG. 8, first, an Internet user accesses a server through a wired / wireless internet network (S70). At this time, an initial screen is output to a web browser of the Internet user. Click with the mouse (S74). The applet is executed to detect the selection, find the file name, and request the file from the video server. If there is a video corresponding to the region clicked on in step S74, the video is output to the web browser of the Internet user. (S76) If there is no video corresponding to the region clicked on in step S74, an error message is sent to the user's web browser and the user input is input. waiting.

As described above, according to the method of geographic information service using the internet network according to the present invention, superimposition and integration of high resolution satellite images and vector data can provide visually superior and service maps containing the latest geographic information on the Internet. have. In addition, since the map is produced using satellite image data, it can be easily upgraded to the latest information. Furthermore, a map with high precision can be produced using high resolution satellite image data and serviced on the Internet. In addition, it is possible to service live 3D data and video data together using satellite images and vector data.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (6)

Outputting an initial screen from the web server when an internet user accesses the web server through a wired / wireless internet network; Transmitting an initial image including a vector command, a raster command, a search window, a video window, and an initial menu including a screen moving key and a map in which a vector data and raster data are combined on a background thereof to a terminal of the Internet user; Displaying the map using only vector data when the internet user selects a vector command from the initial menu, and locally displaying and displaying the vector data of the corresponding region according to a leveling scheme when designating a specific region on the map represented by the vector data; Displaying the map using only raster data when the internet user selects a raster command from the initial menu, and locally displaying the raster data according to a leveling scheme when the specific area is designated on the map represented by the raster data; Searching for a feature name identical to the search word and expanding and displaying a unit area including the feature having the same name as the search word when the Internet user inputs a search word into a search box in the initial menu; And And displaying a video screen in the video window in the video window when the internet user designates a specific unit region to which video data is mapped on the map. The method of claim 1, And storing the vector data and raster data included in the map in a database according to each leveling scheme. The method of claim 2, The index is divided into nine regions, each of which is divided by a numerical value, And a common numerical value in each of the areas is stored as a file name. The method of claim 1, And the vector data and the raster data are stored in a single database in a unified format. The method of claim 1, And the vector data and the raster data are stored in respective databases. The method according to claim 2 or 5, Storing in the database, Geometrically correcting the image data based on the coordinate information of the numerical map so that the image data and the numerical map have the same location information after collecting the image data and the numerical map; Assigning an index to systematically manage the reprocessed numerical map; Setting a maximum accumulation area of the reprocessed digital map, classifying the area value into a tile structure, and assigning a layer to the classified tile structure to generate tile images for each area; And classifying and storing the tile image for each region into a predetermined size so that the tile image for each region can be displayed on a web browser.