KR101485108B1 - Batch automatic method for coordinate transfer and apparatus for the same - Google Patents

Abstract

The present invention relates to a system for collectively automatically converting map data defined by various coordinate systems into a single coordinate system, comprising a reference coordinate system recognition step of recognizing a reference coordinate system from a reference map and a conversion map including at least one transformation coordinate system A transformed coordinate system recognizing step of recognizing positional information of the transformed coordinate system by analyzing the transformed coordinate system, and a coordinate system transforming step of transforming the transformed coordinate system into the same coordinate system as the reference coordinate system according to a preset reference, An identification step of identifying the area to be displayed on the reference map by identifying the positional information of the transformed coordinate system converted into the reference coordinate system, and a step of superimposing the transformed map converted into the reference coordinate system on the reference map, And outputting a map image. In the present invention, when one map data and map data having various coordinate systems are overlapped, a new map data file corresponding to each coordinate system is not generated but only coordinates to be converted by the user are selected and map data having various coordinate systems are superimposed Thus, there is an effect that it is possible to reduce the resource generated in the conversion and easily handle the map map.

Description

TECHNICAL FIELD [0001] The present invention relates to a coordinate automatic converting method,

The present invention relates to a system for automatically converting map data defined in various coordinate systems into a single coordinate system, more specifically, to a system in which different coordinate systems are input and automatically converted into a single reference coordinate system, And an apparatus for the same. 2. Description of the Related Art

Geographic information system (GIS) is an information system that integrates geographical information and attribute data. It is an information system that efficiently collects, stores, updates, processes, analyzes, and outputs various types of geographical information. , Software, geographic information, and human resources. Therefore, the demand for geographic information system (GIS) is on the rise because the information can be digitized and scaled and updated. In order to superimpose map data defined by different geographic information system (GIS) -based coordinate systems, coordinate data of each map data should be superimposed after being transformed into reference coordinates.

However, in the process of superimposing the coordinate transformation between each map data, a new map data file obtained by coordinate conversion is newly created. In order to use one map data with map data defined by various coordinates, multiple map data converted into different coordinate systems should be newly created as a new file. In order to convert the coordinates of the map data, a program capable of coordinate conversion is required. Therefore, prior knowledge of map data and coordinates is required to convert coordinates of map data, and currently, there is a problem that only GIS workers and experts can perform coordinate conversion work.

Accordingly, in the coordinate system conversion, when one map data and map data having various coordinate systems are overlapped, a new map data file corresponding to each coordinate system is not generated but only coordinates to be converted by the user are selected, The purpose of this is to superimpose map data with a system.

In addition, the present invention has an object to convert and store all received map data into the same map data when receiving and storing the map data, and to provide the map data desired by the user by sharing the stored map data.

According to an aspect of the present invention, there is provided a method of automatically converting a coordinate system into a coordinate system, comprising: a reference coordinate system recognition step of recognizing a reference coordinate system from a reference map; and a transformation map reception step of receiving a transformation map including at least one transformation coordinate system from the terminal And a transformation step of transforming the transformed coordinate system into a coordinate system identical to the reference coordinate system according to a preset reference, and detecting a position of the transformed coordinate system converted into the reference coordinate system so that the transformed map is displayed on the reference map And a map image output step of superimposing the conversion map converted into the reference coordinate system on the reference map and outputting the converted map as one map image.

The map image generation step may further include a map image generation step of generating a map image from at least one of a point, a multipoint, a line string, a multi-line string, a polygon, and a polygon after converting the transformed map into the reference coordinate system .

A first conversion step of converting the received conversion map into a file format the same as the reference map; a storing step of storing the conversion map converted into the same format as the reference map in a database; And a second conversion step of searching the request map in the database and re-converting the request map stored in the same format as the reference map into a format corresponding to the request message upon receiving the request message for the request message And a correction step of correcting a conversion error occurring upon conversion of the conversion coordinate system received from the terminal after the coordinate system conversion step into the reference coordinate system.

According to an aspect of the present invention, there is provided an apparatus for automatically converting a coordinate system, comprising: a coordinate system analyzer for recognizing a reference coordinate system from a reference map; a communication unit for receiving a transformation map including at least one transformation coordinate system from the terminal; And a map image output unit for superimposing the transformation map converted to the reference coordinate system on the reference map and outputting the transformation map as a single map image, wherein the coordinate system converting unit transforms the transformation map into the reference coordinate system, And the analyzing unit recognizes the position information of the transformed coordinate system converted into the reference coordinate system, and identifies an area where the transform map is to be displayed on the reference map.

The apparatus further includes a map image generation unit that generates a map image from at least one of a point, a multi-point, a line string, a multi-line string, a polygon, and a polygon into a transformation map converted into the reference coordinate system.

The format conversion unit may further include a format conversion unit for converting the received conversion map into the same file format as the reference map and a database unit for storing the converted map in the same format as the reference map, The request map is retrieved from the database, and the request map stored in the same format as the reference map is re-converted into a format corresponding to the request message.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a map data generating apparatus and a map data generating method, And outputs map data having various coordinate systems in a superimposed manner, thereby reducing resources occurring in the conversion and easily handling the map map

In addition, in the present invention, in receiving and storing map data, all received map data are converted into the same map data and stored, and the stored map is shared to provide map data desired by the user, There is an effect that can be constructed.

1 is a block diagram for explaining a coordinate system collective transformation system according to the present invention.
2 is a functional block diagram of a coordinate system conversion service apparatus.
FIG. 3 shows a flow chart for a coordinate system batch conversion method according to the present invention.
FIG. 4 shows a flow chart of a map map format batch conversion method according to the present invention.
5 is a view for explaining a screen in which a transformation map and a reference map are superimposed and output according to an embodiment of the present invention.
6 is a diagram illustrating a request map according to an exemplary embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Referring to FIG. 1, a description will be made of a coordinate system automatic batch conversion system according to a preferred embodiment of the present invention. 1 is a block diagram for explaining a coordinate system collective transformation system according to the present invention.

Referring to FIG. 1, the coordinate system collective conversion system may include a terminal 100, a coordinate system conversion service apparatus 200, and a communication network 300.

The terminal 100 transmits the transformation map including at least one transformation coordinate system to the coordinate system transformation service apparatus 200 through the communication network 300. [

Here, the coordinate system may include at least one of a WGS84 coordinate system, a TM coordinate system, a UTM coordinate system, and a google coordinate system. The present invention does not limit the coordinate system to the WGS84 coordinate system, the TM coordinate system, the UTM coordinate system, and the google coordinate system, and includes all the coordinate systems used in the domestic and the overseas.

The coordinate system service apparatus 200 receives the transformation map from the terminal 100. Converts the received transformation map into a coordinate system identical to the previously recognized reference coordinate system, and transmits it to the terminal 100.

Also, the terminal 100 is preferably implemented as a terminal having a display means such as a PC, a laptop, a PDA phone, a smart phone, and the like.

Hereinafter, the coordinate system conversion service apparatus 200 of FIG. 1 will be described in detail with reference to FIG. 2 is a functional block diagram of the coordinate system conversion service apparatus 200 of FIG.

2, the coordinate system conversion service apparatus 200 includes a communication unit 210, a coordinate system analysis unit 220, a coordinate system conversion unit 230, a format conversion unit 240, a database unit 250, A map image output unit 270, a correcting unit 280, and an editing unit 290. [0050]

The communication unit 210 performs communication with the terminal 100. That is, the terminal 100 receives a transformation map including at least one transformation coordinate system from the user.

The wired or wireless communication module may be used to enable communication between the terminal 100 and the coordinate system conversion service apparatus 200. The wireless communication may be Bluetooth, ZigBee, infrared communication, (Wibro), HSDPA, WiMAX (Wi-Fi), Wi-Fi (Wi-Fi), etc., which can use the Internet network and the mobile communication network 300, ), And LTE (Long Term Evolution).

The coordinate system analyzer 220 recognizes the reference coordinate system from the reference map. Here, the reference map recognizes the coordinate system of the reference map in advance through the coordinate system conversion service apparatus 200 or is input in advance by the manager of the coordinate system conversion service apparatus 200.

The coordinate system converting unit 230 converts the transformed coordinate system into a coordinate system identical to the reference coordinate system according to a preset reference.

The coordinate system analyzer 220 identifies the area to be displayed on the reference map by grasping the position information of the transformed coordinate system converted into the reference coordinate system.

The database unit 250 stores the transformation map converted into the same format as the reference map. Accordingly, a necessary model table of the database unit 250 can be generated using model schema information using XML.

XML (eXtensible Markup Language) is a next-generation Internet electronic document standard created by improving shortcomings of HTML (Hyper Text Markup Language) and SGML (Standard Generalized Markup Language). It is platform independent, XML has been increasingly used since it was adopted by the W3C as a recommendation in February 1998 because it has the advantage of expressing its abundant meaning. The XML schema is an abstract representation of the attributes of the XML object and the interrelationships between the elements, and defines the structure analysis and each structure element to represent the schema in the document. For example, for a Web site, Web site elements, Web page elements, and other content elements are defined using XML and HTML tags. It is directly handled without parser mediation because it is more advantageous than languages like document type definition (DTD) and simple object XML (SOX: Simple Object XML) And the ability to define with transform (XSLT).

Thereby extracting the design information for the automatic system 200 for converting the coordinate system and storing the transformation map input through the terminal 100. This makes it easy to edit and modify the conversion maps stored in the database unit 250.

The format conversion unit 240 converts the received conversion map into the same file format as the reference map. Upon receiving a request message for a request map to be provided from a user of the terminal 100, the request unit 250 searches the request unit 250 for a request map according to the request message and requests a request map stored in the same format as the reference map Converts back to the format corresponding to the message.

The map image generating unit 260 generates a map image by converting the transformed map into the reference coordinate system into at least one of a point, a multi-point, a line string, a multi-line string, a polygon, and a polygon.

The map image output unit 270 superimposes the conversion map converted into the reference coordinate system with the reference map and outputs the converted map as one map image.

The correction unit 280 corrects the conversion error that occurs when converting the conversion coordinate system received from the user of the terminal 100 into the reference coordinate system.

The editing unit 290 can add, edit, and delete images on the output map image.

Since the map map edited through the editing unit 290 is a single coordinate system on the editing screen and the conversion map stored in the database unit 250 is a unique coordinate system, the coordinate system conversion unit 230 converts the requested editing data through the coordinate system conversion unit 230.

Hereinafter, a method of automatically converting a coordinate system according to a preferred embodiment of the present invention will be described with reference to FIG. 3 to FIG. 3 shows a flowchart of a coordinate system batch conversion method according to the present invention. FIG. 4 shows a flowchart of a map map format batch conversion method according to the present invention. The description of the foregoing is omitted or simplified. The construction of the coordinate system automatic conversion system of the present invention can be made more clear by the following description.

Referring to FIG. 3, the coordinate system conversion service apparatus 200 recognizes a reference coordinate system that recognizes a reference coordinate system from a reference map (S301). The standard reference coordinate system used here is the coordinate system used in Korea and abroad, and it is necessary to use the widest map data that can display not only domestic map data but also overseas map data. For example, you can use the google coordinate system provided by google as the basic coordinate system.

Next, a transformation map including at least one transformation coordinate system is received from the terminal 100 (S302). Here, the conversion map is map map information including at least any one of the specified building, road, river, and area. This transformation map also includes at least one coordinate system. Here, the coordinate system may include at least one of a WGS84 coordinate system, a TM coordinate system, a UTM coordinate system, and a google coordinate system. The present invention does not limit the coordinate system to the WGS84 coordinate system, the TM coordinate system, the UTM coordinate system, and the google coordinate system, and includes all the coordinate systems used at home and abroad.

Next, the transformed coordinate system is converted into the same coordinate system as the reference coordinate system according to a preset reference (S304). Here, the preset reference can be seen as a method of converting the received transformation map such as WGS84 coordinate system, TM coordinate system, UTM coordinate system, google coordinate system, etc. into the reference coordinate system recognized in the reference coordinate system recognition step.

As an example of a transformation method, an existing Hermert transformation (7-parameter transformation) can be used. Hermert transforms are commonly used to transform a three-dimensional Cartesian coordinate system or a plane coordinate system. When converting between three-dimensional Cartesian coordinate system, rotation, parallel movement, and storage transformation of X, Y and Z axes are all considered. In the conversion between two-dimensional plane coordinate systems, rotation and parallel movement and scale transformation only of X and Y axes are considered.

: 평행이동 벡터, 두 좌표계　중심간의 차이here,

: A translation vector, the difference between two coordinate system centers

: 회전요소 벡터, 직각좌표중심에서 축을 따라 증가하는 방향으로 바라볼 때 시계방향 회전을 양(+)으로 한다(라디안 단위).

: Clockwise rotation is positive (in radians) when viewed in a direction that increases along the axis from the rotation vector, center of the rectangular coordinate.

: 축척계수,

: 축척보정계수

: Scale factor,

: Scale correction factor

The transformation method not only transforms the coordinate system through an equation such as Hermert transformation, but also enables automatic conversion of the coordinate system through the conversion program.

Next, the position information of the transformed coordinate system converted into the reference coordinate system is identified and the position on the reference map is identified (S305). This is the step of identifying the location where the transformed transform map is to be displayed in the reference map on which it is based. That is, it recognizes the position information of the transformation map composed of at least any one map information such as each building, road, river, and area, and identifies the position to be displayed on the reference map with the position information of the previously recognized transformation map.

Next, in step S306, the conversion error generated when converting the conversion coordinate system received from the terminal 100 into the reference coordinate system is corrected. Correction of errors that may occur in the coordinate system conversion such as correction of conversion error occurring in conversion between TM coordinate system and world geodetic system which are mainly used in Korea.

In the coordinate system transformation, the 7-parameter transformation described above is characterized by preserving the shape of the data to be transformed into the top transformation. That is, the shape of the observation points in the two coordinate systems is preserved in the same manner. For example, if four observation points have the shape of a square, it means that the shape has a square shape even after the transformation. As a result, it is assumed that there is no distortion between the two geodesic systems in the transformation of the topography. When the results of the viewpoints are acquired in one coordinate system, the shape of the figure composed of the coordinates differs depending on the method of measurement and the method of adjustment calculation. If it is different from the form in Therefore, the difference remains after the transformation. Therefore, even if the 7-parameter transformation through the selection of the best viewpoint is performed, the coordinate difference will exist.

In the coordinate transformation as described above, the difference remaining after the transformation is referred to as distortion. In the end, correction using distortion modeling is performed for precise coordinate transformation. Distortion modeling can be mathematically expressed as a mathematical or statistical surface based on distortions obtained from a large number of viewpoints. Multiple regression surface joining, minimum surface joining, and least squares co-location can be used.

By using the double least squares collision method, the spatially distributed distortion can be predicted. The least squares collocation first calculates the amount of distortion in the overheads. Next, the empirical dispersion function of the distortion amount is calculated using the latitude, longitude, and height values. Next, the empirical dispersion function is expressed as an analytical dispersion function. Next, the amount of distortion at an arbitrary point is calculated.

The error correction method not only corrects the error in the same way as the least square collision but also enables automatic conversion of the coordinate system through the error program. Accordingly, the method of correcting the error is not limited to the least squares collision.

Next, in step S307, the transformed map converted to the reference coordinate system is generated as a map image using at least one geometry of a point, a multipoint, a line string, a multiline string, a polygon, and a polygon.

Here, the geometry visualizes the information of the land. In general, it is often easier to turn a large amount of complex information into a visual model. For example, you can graph the statistical data at a glance, and change the operating system of your computer from DOS to Windows. This is due to the mysterious ability of human beings to have visual intuition. Geometry is the process of transforming problems in mathematics and science into visual models and solving them using mathematically validated visual intuitions. It is therefore a major task of geometry to transform a given problem into a visual model, and to rigorously verify the visual intuition of the resulting visual model mathematically.

Points, multi-points, line strings, multi-line strings, polygons, and poly polygons can be seen as a visual means of representing land information.

Next, the transformation map converted into the reference coordinate system is superimposed on the reference map (S307). This causes at least one transformation map to overlap the reference map. That is, it is possible to superimpose not only one transform map transformed into the reference coordinate system but also two, three, etc. with the reference map. Thus, by converting the transformation map composed of different coordinate systems into the same coordinate system as the reference coordinate system and superimposing them, the user can easily use the map and visually recognize the map map easily.

Next, the map image is superimposed and transmitted as a single map image to the terminal 100 (S308). As described above, the map image generated by superimposing the conversion map converted into the reference coordinate system and the reference map is transmitted to the terminal 100.

Next, an edit request message for adding, editing, and deleting an image of the map image output from the user of the terminal 100 is received (S309). Since the edited map map is a single coordinate system on the editing screen and the conversion map stored in the database unit 250 is a unique coordinate system, the coordinate system conversion unit 230 converts the coordinate data of the requested editing data (S310). The edited data is also stored in the database unit 250 (S311).

The embodiment of FIG. 3 may be implemented as a whole or as a part thereof. For example, only S301 to S308 can be implemented. The embodiment of FIG. 3 may be performed in a different order. For example, S311 in S309 may be performed before S305.

Hereinafter, the map map format batch conversion method will be described with reference to FIG.

Referring to FIG. 4, the coordinate system conversion service apparatus 200 recognizes a reference coordinate system that recognizes a reference coordinate system from a reference map (S401). The standard reference coordinate system used here is the coordinate system used in Korea and abroad, and it is necessary to use the widest map data that can display not only domestic map data but also overseas map data. For example, you can use the google coordinate system provided by google as the basic coordinate system.

Next, as shown in FIG. 3, a transformation map including at least one transformation coordinate system is received from the terminal 100 (S402). Here, the conversion map is map map information including at least any one of the specified building, road, river, and area. This transformation map also includes at least one coordinate system. Here, the coordinate system may include at least one of a WGS84 coordinate system, a TM coordinate system, a UTM coordinate system, and a google coordinate system. The present invention does not limit the coordinate system to the WGS84 coordinate system, the TM coordinate system, the UTM coordinate system, and the google coordinate system, and includes all the coordinate systems used at home and abroad.

Next, the received conversion map is converted into the same file format as the reference map (S403). For example, when the format file of the reference map is composed of a Shape file, the conversion map composed of a format file such as a Shape file, KML, GML, DXF is received and converted into a Shape file that is the same as the reference map. In the present invention, the format file is not limited to a Shape file, KML, GML, and DXF, and a format file including all coordinate systems used at home and abroad is used.

Next, the conversion map converted into the same format as the reference map is stored in the database unit 250 (S404).

Next, the request message for the request map is received from the terminal 100 (S405). Here, the request message selects a request map file format that the user desires and transmits a request message to the coordinate system conversion service apparatus 200.

Next, upon receiving a request message for a request map to be provided from the user of the terminal 100, the request unit 250 searches the request unit 250 for a request map according to the request message to request a request map stored in the same format as the reference map And re-converts the format into a format corresponding to the message (S406).

For example, if the request message is to receive the request map A in the format of KML among the files stored in the database unit 250, the request map A stored in the same format as the reference map is re-converted into KML and provided.

Finally, the request map corresponding to the request message is transmitted to the user of the terminal 100 through the communication network 300 (S407).

5 is a diagram for explaining a screen in which a transformation map and a reference map are superimposed and output according to an embodiment of the present invention.

As shown in FIG. 5, it can be seen that the coordinate system defined by the different coordinate system on the google coordinate system, which is the reference coordinate system, is converted into the reference coordinate system collectively and overlapped with the reference map. As can be seen, it is possible to identify the coordinate system superimposed on one image by superimposing and outputting the conversion map for Daejeon special city and Gangneung city on the google map as a reference.

6 is a diagram illustrating a request map according to an exemplary embodiment of the present invention.

6, it can be confirmed that the conversion map stored in the database unit 250 is provided to the terminal 100 user. It is possible to selectively receive the download type and the coordinate system by receiving the request message for Gangneung city. The download type is the part that selects the map map format to provide the request map. Accordingly, it is possible to convert the converted map stored in the same manner as the reference map into the map map format desired by the user and to receive the converted map map.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings.

100: terminal 200: coordinate system conversion service device
210: communication unit 220: coordinate system analysis unit
230: Coordinate system conversion unit 240: Format conversion unit
250: Database part 260: Map image generating part
270: map image output unit 280:
290: editor 300:

Claims (8)

A reference coordinate system recognition step of recognizing a reference coordinate system from a reference map previously input by an administrator;
A transformation map reception step of receiving a transformation map including map information of at least one of a specific building, a road, a river, and a region including at least one transformed coordinate system information from the terminal;
A coordinate system conversion step of converting the transformed coordinate system into a coordinate system identical to the reference coordinate system according to a preset reference;
A correcting step of correcting a conversion error due to the coordinate transformation by calculating a distortion amount generated when the always-converted coordinate system is converted into the reference coordinate system using the least-squares collision;
An identification step of identifying the area in which the transformation map is to be displayed on the reference map by grasping the position information of the transformation coordinate system converted into the reference coordinate system; And
And a map image output step of superimposing the transformation map converted into the reference coordinate system on the reference map and outputting it as one map image. The method according to claim 1,
After the identifying step
Further comprising a map image generation step of generating a map image by using at least one geometry of the transformation map converted into the reference coordinate system as a point, a multi-point, a line string, a multi-line string, a polygon, Automatic conversion method. The method according to claim 1,
A first conversion step of converting the received conversion map into the same file format as the reference map;
A storing step of storing a conversion map converted into the same format as the reference map in a database; And
Upon receiving a request message for a request map to be provided from a terminal user, searches the request map in the database,
Further comprising a second conversion step of re-converting the request map stored in the same format as the reference map into a format corresponding to the request message. delete delete delete delete delete

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