KR101170380B1 - The apparatus and method of on-demand updating of digital map with clipping and join - Google Patents

Abstract

PURPOSE: An on-demand updating device for an object-based numerical map through clipping and join and a method thereof are provided to improve the accuracy of the object-based numerical map by minimizing a data error. CONSTITUTION: A data error checking unit(610) checks a data error. A clipping algorithm engine(620) finds a map sheet part related to a geographic feature extracted through a data extracting module to form a polygon clipped into a square shape on a screen. A join algorithm engine(630) searches for measurement data having the same coordinates as coordinates which a boundary of clipped data has by sequentially searching for update data and joins the measurement data to the same layer by inserting the same into the clipped data.

Description

Object-based digital map updating and clipping method through clipping and joining {THE APPARATUS AND METHOD OF ON-DEMAND UPDATING OF DIGITAL MAP WITH CLIPPING AND JOIN}

In the present invention, object-based numerical maps can be updated at any time by assigning UFIDs to features, and object-based digital maps are updated at any time through clipping and joining, which enables continuous expression, rapid updating, and continuous history management of the same object. An apparatus and method are provided.

At present, the bulk map and partial update of digital maps are performed through aerial surveys, but due to the complicated digital map production method, a large amount of budget is required and a problem of updating even unnecessary parts occurs.

In addition, since the changes are not reflected until the next update is made, it is not possible to meet the demands of the consumer, thereby reducing the reliability of the public and reducing its utility.

In order to solve this problem, Korean Patent Publication No. 10-0587472 (June 08, 2006) collects data from ground survey data and construction plan drawings acquired at the site of change area, and builds a DB for monitoring. Extracting data, performing a function of directly receiving and outputting the extracted data transmitted in step 1), and classifying the received data and storing the data in a past DB, a current DB, and a future DB; Receive data from or load data from each DB in step 3) to perform spatial DB monitoring, and perform a real-time correction / update processing, terrain change modeling, update region future prediction consisting of Unique Feature Identifier Although the method and system for monitoring the space DV using

This is a structure applied to the foliage unit, and since the update of the feature is updated every half a year or annually, there is a problem that it is difficult to provide the latest information.

In addition, when the update occurs, the previous data is deleted, and only the changed data is managed, so that it is difficult to accurately track and provide accurate history information, and there is no device for checking an error during the update process. Because it should be, there was a problem that is difficult to update at any time.

Domestic Patent Publication No. 10-0587472 (June 08, 2006)

In order to solve the above problems, in the present invention, the object-based numerical map can be updated from time to time, continuous representation of the same object, rapid update and continuous history management, and input data (completion drawing, survey data, numerical map) The error check is divided into spatial information check mode, attribute information check mode, and error check mode on the DB so that 2.0 data and GIS DB files) are reflected in the existing object-based digital map data. The object of the present invention is to provide an apparatus and method for updating an object-based digital map through clipping and joining, which can improve the accuracy of the conventional scheme.

In order to achieve the above object, an object-based digital map updating apparatus through clipping and joining according to the present invention

A data receiving unit 100 receiving external completed construction drawings, survey data (satellite images, photos), and existing digital map 2.0 data and GIS DB files and passing them to a data conversion module;

Object-based map DB (200) that stores unique object-based map data in the form of an integrated continuous DB by assigning UFID (Unique Feature Identifier) to a plurality of terrains and features in the target area. )Wow,

Comprehensive drawing, survey data (satellite image, photo), digital map 2.0 data, GIS DB file that read and read the completed drawings, survey data (satellite image, photo), digital map 2.0 data, GIS DB file received from the data receiver A data conversion module 300 for outputting and converting the coordinate system of the object-based digital map into a UTM-K coordinate system, and then dividing the coordinate system according to the object-based digital map schema structure and granting a UFID (Unique Feature Identifier) to the object-based digital map.

Analyze the minimum spatial range (MBR) of the object to be updated in the completed drawing, survey data, digital map 2.0 data, and GIS DB file converted from the data conversion module to the UTM-K coordinate system, and then obtain the object-based map DB through the obtained spatial range. After importing only the object-based map data in the range to be updated, the difference occurs by comparing the input data (completion drawing, survey data, digital map 2.0 data, GIS DB file) and the existing object-based map data stored in the object-based map DB. A data extraction module 400 for extracting objects related to terrain and features

A data linker 500 for accessing the object-based numerical map DB to perform a function of loading, storing, creating, updating, and deleting existing object-based numerical map data;

Check the error so that the input data (completed drawing, survey data, digital map 2.0 data, GIS DB file) are reflected in the existing object-based digital map data, and check the map part of the objects related to the terrain and features extracted through the data extraction module. After finding and clipping, the clipped data is stored as backup data, and the data having the same coordinates as the clipped data is inserted into the clipped data and joined to the same layer to be updated with the new object-based digital map. It is achieved by including an object-based numerical map update control module 600 to be configured.

In addition, the method of updating the object-based digital maps through clipping and join according to the present invention,

Receiving the completed drawing, survey data (satellite image, photo) and the existing digital map 2.0 data and the GIS DB file, which are input from the outside through the data receiving unit, and transmitting them to the data conversion module (S100);

In step S200, by assigning UFIDs to a plurality of terrains and features of a target area in the object-based map DB, constructing the object-based spatial information as an object unit and storing the existing object-based map data in an integrated continuous DB form (S200);

Completion drawings, survey data (satellite images, photos), digital map 2.0 data, GIS DB files received from the data conversion module, and completed drawings, survey data (satellite images, photos), digital map 2.0 Outputting and converting the coordinate system of the data and the GIS DB file to the UTM-K coordinate system, which is the coordinate system of the object-based digital map, dividing the data according to the object-based digital map schema structure and assigning UFID (S300);

Analyze the minimum spatial range (MBR) of the object to be updated in the completed drawing, survey data, digital map 2.0 data, and GIS DB file converted from the data conversion module to the UTM-K coordinate system through the data extraction module. Import only the object-based map data of the range to be updated in the object-based map DB through the input data (completion drawing, survey data, digital map 2.0 data, GIS DB file) and existing object-based map data stored in the object-based map DB. Comparing step (S400) and extracting the objects related to the terrain, features that the difference occurs,

Checking an error such that input data (completed drawing, survey data, digital map 2.0 data, GIS DB file) is reflected in existing object-based digital map data through the object-based numerical map update control module (S500);

After the object-based numerical map update control module finds the map parts of the objects related to the terrain and features extracted by the Weiler-Atherton algorithm engine, clipping them in the form of polygons, and backs up the clipped data. Storing the data into the same layer by inserting survey data (satellite image, photo) having the same coordinates as the clipped data through the join algorithm engine and joining the same layer to update the new object-based digital map ( S600).

As described above, in the present invention, in order to solve the above problems, the object-based numerical map can be updated from time to time, continuous representation of the same object, rapid update and continuous history management, and minimized data errors There is a good effect that can improve the accuracy of object-based digital map to 80%.

1 is a block diagram showing the components of the object-based digital map updating apparatus 1 through clipping and joining according to the present invention,
2 is a block diagram of the components of the data conversion module 300 according to the present invention;
Figure 3 is an embodiment showing that the coordinate transformation unit 310 according to the present invention configured as a chat window,
4 is a block diagram showing that the object-based numerical map according to the present invention consists of a 16-digit UFID structure,
5 is a block diagram showing the components of the data extraction module 400 according to the present invention;
Figure 6 is an embodiment showing that the data extraction module 400 is configured as a dialog window according to the present invention,
7 is a block diagram showing the components of the object-based numerical map update control module 600 according to the present invention;
8 is a block diagram showing the components of a clipping algorithm engine 620 according to the present invention;
9 is a diagram illustrating an operation of a Sutherland Hodgman algorithm engine according to the present invention;
FIG. 10 is a diagram illustrating an operation of a Weiler-Atherton algorithm engine according to the present invention. FIG.
FIG. 11 is an exemplary diagram illustrating tracking of historical information when the 'Gyeongbu Expressway Dongsan Osan Point' is arbitrarily updated three times through the data history management unit according to the present invention.
12 is an embodiment showing that the data error check unit is configured as a chat window according to the present invention;
Figure 13 is an embodiment showing that the UFID code is given to the feature through the UFID code setting unit according to the present invention,
FIG. 14 is a view illustrating the leaf parts of objects related to the terrain and features extracted through the Weiler-Atherton algorithm engine in the object-based numerical map update control module according to the present invention, and then clipping them into polygons. , Inserting survey data (satellite image, photo) having the same coordinates as the clipped data through the join algorithm engine, joining the clipped data to the same layer, and updating the new object-based digital map. Ye
15 is a flowchart illustrating a method for updating an object-based digital map at any time through clipping and joining according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram illustrating the components of the object-based digital map updating apparatus 1 through clipping and joining according to the present invention, which is a data receiving module 100, an object-based map DB 200, The data conversion module 300, the data extraction module 400, the data linker 500, and the object-based numerical map update control module 600 are configured.

First, the data receiving module 100 according to the present invention will be described.

The data receiving module 100 receives externally completed drawings, survey data (satellite images, photos), and existing digital map 2.0 data and GIS DB files, and transmits them to the data conversion module.

This is a terminal device that receives data in a data transmission system, and is configured to inspect received data and to send an error control signal to a transmitting side when a transmission / reception error occurs.

The completed drawing refers to a drawing that expresses the contents of the changed feature of a specific region as it is, and the survey data (satellite image, photo) is a satellite image data for the feature taken by GPS satellite and a feature taken by aerial lidar Say high definition pictures about.

The digital map 2.O data is a digital output of a map of land, vegetation, land use, and other land representations, which are collected on a magnetic tape, or processed directly or processed using a computer. It is composed of map units and consists of NGI and NDA formats. It consists of GRS80 ellipsoid TM coordinate system and features are formed in layers.

The GIS DB file refers to a file that stores and stores data about a geographic information system that can be utilized in terrain-related fields such as traffic and communication by analyzing and processing geospatial data.

Next, the object-based map DB 200 according to the present invention will be described.

The object-based map DB 200 provides UFID (Unique Feature Identifier) to a plurality of topographic features of the target area, constructs the object-based spatial information in object units, and integrates the existing object-based map data in the form of a continuous DB. It serves to store.

The existing object-based map data is a digital map constructed in the form of object-based spatial information, as shown in FIG. 4, and includes feature code information combining four digital map 1.0 standard codes and four digital map 2.0 standard codes. It is represented by 8 digits, the serial number of the feature that is continuously constructed is represented by 7 digits, and the parity bit for error checking is represented by 1 digit and consists of a total of 16 UFID structures.

Next, the data conversion module 300 according to the present invention will be described.

The data conversion module 300 reads the completed drawing, survey data (satellite image, photo), numerical map 2.0 data, GIS DB file, read completed drawings, survey data (satellite image, photo) received from the data receiving unit, After converting the coordinate system of the digital map 2.0 data and GIS DB file to the UTM-K coordinate system, which is the coordinate system of the object-based digital map, convert it.

The file type is composed of ngi, dxf, shp format to read the completed drawings, survey data (satellite image, photo), digital map 2.0 data, and GIS DB file.

The data conversion module 300 according to the present invention includes a coordinate transformation unit 310 and UFID code setting unit 320.

As shown in FIG. 3, the coordinate transformation unit 310 converts the coordinate system of the read-in completion drawing, survey data (satellite image, photo), digital map 2.0 data, and GIS DB file into a coordinate system of an object-based digital map. Outputs the K coordinate system and converts it.

The UFID code setting unit 320 constructs the completed drawings, survey data (satellite images, photos), digital map 2.0 data, and GIS DB files converted into coordinates of the object-based digital map, and divides them by maps according to the schema of the spatial database. This function assigns 16-digit UFID codes after continuous data processing for each object through the database operator.

Here, the 16-digit UFID code expresses the feature code information combining the numeric map 1.0 standard code 4 digits and the digital map 2.0 standard code 4 digits in 8 digits , and the serial number of the corresponding feature serially constructed is 7 digits. The parity bit for error checking is expressed as one digit .

FIG. 13 is a diagram illustrating an embodiment in which a UFID code is assigned to a feature through a UFID code setting unit according to the present invention.

Next, the data extraction module 400 according to the present invention will be described.

The data extraction module 400 analyzes the completed drawings, survey data, numerical map 2.0 data, and the minimum spatial range (MBR) of objects to be updated in the GIS DB file, which are converted from the data conversion module to the UTM-K coordinate system. After importing only the object-based map data of the range to be updated in the object-based map DB through the spatial range, input data (completion drawing, survey data, digital map 2.0 data, GIS DB file) and existing object-based stored in the object-based map DB Compares map data and extracts objects related to the terrain and features that cause the difference.

It consists of one dialog, a file type selector for selecting file input on one side of the upper part is formed in advance on the memory, an input data (input file) uploading unit is formed at the bottom of the file type selection unit, and an MBR at the bottom of the input data uploading unit. An analysis unit 410 is formed, and an object extraction control unit 430 is formed to extract the object extracted at the bottom of the MBR analysis unit together with the UFID.

The data extraction module 400 according to the present invention includes an MBR analyzer 410, an object-based map DB caller 420, and an object extraction controller 430.

The MBR analyzer 410 analyzes a minimum spatial range (MBR) of an object to be updated in input data, such as a completion drawing, survey data, digital map 2.0 data, and a GIS DB file.

The object-based map DB caller 420 is connected to the data linker to load only existing object-based map data of a range to be updated in the object-based map DB.

The object extraction control unit 430 compares the input data (completion drawing, survey data, digital map 2.0 data, GIS DB file) and the existing object-based map data stored in the object-based map DB for the terrain, features that occur difference It is responsible for extracting the objects and the UFID together.

Next, the data linking unit 500 according to the present invention will be described.

The data linker 500 accesses the object-based numerical map DB and performs a function of loading, storing, generating, updating, and deleting existing object-based numerical map data.

It is configured in connection with the object-based map DB caller of the data extraction module.

Next, the object-based numerical map update control module 600 according to the present invention will be described.

The object-based numerical map update control module 600 checks an error so that the input data (completed drawing, survey data, numerical map 2.0 data, GIS DB file) is reflected in the existing object-based numerical map data, and through the data extraction module. After finding and clipping the leaf parts of the extracted terrain and objects, the clipped data is stored as backup data, and the measurement data having the same coordinates as the clipped data is inserted into the clipped data. Joins to layers to update new object-based digital maps.

The data error check unit 610, the clipping algorithm engine 620, the join algorithm engine 630, the data history management unit 640 is configured.

The data error checking unit 610 checks an error so that input data (completed drawing, survey data, numerical map 2.0 data, GIS DB file) is reflected in the existing object-based numerical map data, spatial information check mode, and attribute information check. Mode, it checks data error by dividing into error checking mode on DB.

Here, the spatial information check mode relates to a mode for checking whether the point object is overlapped or not, and whether the object is divided or not, and the attribute information check mode is for checking whether the unique identifier is missing or duplicated and the required attribute information is missing. The error checking mode in the DB relates to a mode for checking an error based on overlapping, linking, and intersecting objects.

As shown in FIG. 12, the data error checking unit according to the present invention is configured as a chat window, and the checked error information is configured to identify and correct an error occurrence point by displaying a corresponding position in the form of a circle on the screen.

The clipping algorithm engine 620 forms a polygon that is clipped to a rectangular shape on the screen by finding the leaf parts of objects related to the terrain and features extracted through the data extraction module, and then stores the clipped data as backup data. It plays a role.

It is composed of the Sutherland Hodgman algorithm engine 621 and the Weiler-Atherton algorithm engine 622.

The Sutherland Hodgman algorithm engine 621 selects an area to be clipped by dividing it into an inner vertex and an outer vertex of a boundary (area: boundary) to be clipped, and then touches all the parts together with the area. Stores vertices sequentially. This is solved by a relatively simple formula for clipping data, which has the advantage of fast execution speed.

FIG. 9 is a diagram illustrating an embodiment of an operation of a Sutherland Hodgman algorithm engine according to the present invention.

The Weiler-Atherton algorithm engine 622 plays a role of independently storing and managing objects when one object is in contact with a region to be clipped. The data structure that stores the vertices consists of a linked list, and the order of the vertices is directional. Then, the storage location of the vertex list is stored between the object to be clipped and the area, and the clipped objects are stored after crossing the list.

Operation of the Weiler-Atherton algorithm engine, as shown in FIG.

First, select the object to be clipped from the object and the area and move the vertices one by one from the starting point and check whether the vertex is inside or outside the area.

Subsequently, when moving from outside to inside, the vertex is passed. When moving from inside to outside, the vertex is stored and moved to the corresponding vertex list of the area.

Subsequently, the area vertex list is moved, and when moving from the inside of the object to the outside, the vertex is saved and once again, the vertex list of the object is met. Let's do it.

In this way, repeated vertex movements until the first start point is encountered, creating independent multi-sided clipped polygons.

The join algorithm engine 630 sequentially searches for data to be updated, searches for survey data (satellite image, photo) having the same coordinates as the boundary of the clipped data, and then surveys data having the same coordinates as the clipped data. It inserts (satellite image, photo) into the clipped data and joins them to the same layer.

It joins surveying data (satellite images, photos) by finding the same coordinates that are clipped and automatically stored in memory to join the data.

In addition, based on a single object of the survey data (satellite image, photo) is searched for the entity that meets the end point of a single entity and configured to join the survey data (satellite image, photo).

That is, first, the data to be updated is sequentially searched to search the survey data (satellite image, photo) with the same clipped area and the end point of the object, and then the joined data is joined by joining the survey data (satellite image, photo). Enter again into existing data and join sequentially.

The join algorithm engine according to the present invention consists of a method of advancing the next layer after completion of all join operations of the layer. At this time, because the layer is not updated, it automatically deletes and clippings a layer such as a building or a warning system in advance.

Table 1 below relates to the join algorithm engine according to the present invention.

Logn * n
Log (A ', B', C ', D') * (A, B, C, D, E, F)
Loop {N-> n Join (Loop {M-> m})
if (Delete N-> n)}

The data history management unit 640 stores the update start time and the end time for each object in a selected table of a DB, and manages a change situation of an object in a daily, monthly, yearly or a specific period.

It consists of a data history management database consisting of eight attributes.

The data history management database includes the UFID of the updated object, the data type of the object, the table name of the update data (Table_name), the update method (Update_method), the updated user (Update_user), the update subject (Update_purpose), and the update. It consists of S_TIME and E_TIME which stores the status and update time.

For example, if the history information when the 'Gyeongbu Expressway Dongtan Osan Inter-branch Point' is arbitrarily updated three times is displayed as shown in FIG. 11.

That is, whenever one object is updated, the changed history is systematically managed. When the update is made, information on the date of the update is stored in the existing E_TIME attribute, and update information of the newly updated feature is input.

In S_TIME, updated date information is input. In E_TIME, since the last updated data is not known, the end time of the update is not known. Therefore, the current value of UC (Until Change) is stored.

As such, the data history management unit according to the present invention can track the history of the same feature through UFID search, so that when updates occur instead of a batch update of a certain period, management and tracking of the quick update and history of each object unit occurs. You can do

Hereinafter, a detailed operation process of the object-based digital map updating method through clipping and joining according to the present invention will be described.

First, the completion drawing, survey data (satellite image, photo) input from the outside through the data receiving unit, and receive the existing digital map 2.0 data and GIS DB file and transmits to the data conversion module (S100).

Subsequently, the object-based map DB is assigned UFIDs to a plurality of terrains and features of the target area, constructed in the form of object-based spatial information as an object unit, and stores the existing object-based map data in an integrated continuous DB form (S200).

Subsequently, the completed drawing, survey data (satellite image, photo), numerical map 2.0 data, GIS DB file received from the data receiving module through the data conversion module, read the completed drawing, survey data (satellite image, photo), numerical value The coordinate system of the map 2.0 data and the GIS DB file is converted to the UTM-K coordinate system, which is the coordinate system of the object-based digital map, converted, and divided by the leaves according to the object-based digital map schema structure, and the UFID is assigned (S300).

Subsequently, the minimum space range (MBR) of the object to be updated is analyzed through the data extraction module, the completed drawing, survey data, digital map 2.0 data, and GIS DB file converted from the data conversion module to the UTM-K coordinate system. After importing only the object-based map data of the range to be updated from the object-based map DB through the range, input data (completion drawing, survey data, digital map 2.0 data, GIS DB file) and existing object-based map stored in the object-based map DB Comparing the data to extract the objects on the terrain, features that the difference occurs (S400).

Subsequently, through the object-based numerical map update control module, an error is checked so that input data (completed drawings, survey data, digital map 2.0 data, GIS DB file) is reflected in existing object-based digital map data (S500).

It checks the coordinates, the number of intermediate points, the width of the planar object, the length of the linear object, etc., and analyzes the identity of the object and extracts different objects.

At this time, as the input data performs coordinate transformation when extracting different objects, an error according to the amount of local distortion occurs.

Therefore, in the present invention, an object satisfying the inspection condition among the data which does not deviate within the error range by setting a condition within the error tolerance range of 70 cm is set to be determined as the same object.

Checking an error so that the input data (completion drawing, survey data, digital map 2.0 data, GIS DB file) is reflected in the existing object-based digital map data through the object-based digital map update control module includes a space inspection mode and an attribute. It means to check by executing inspection mode and position display mode.

The spatial inspection mode detects an error appearing on a graphic, and performs a duplicate inspection of an object, a duplicate inspection of a vertex, an inspection below a predetermined area, a polygon closure inspection, an object leakage inspection, and an independent existence inspection.

The attribute checking mode detects an error of attribute information of an object, and performs a unique identifier missing check, a unique identifier duplicate check, a unique identifier consistency check, an attribute information missing check, and an attribute information allowable value check.

The position display mode serves to mark the position of the object on which an error has occurred in the object-based numerical map that has completed the spatial inspection mode and the attribute inspection mode.

Finally, as shown in FIG. 14, the object-based numerical map is extracted from the Weiler-Atherton algorithm engine in the object-based numerical map update control module to find the leaf parts of objects related to the terrain and features, and then clipping them into polygons. Then, the clipped data is stored as backup data, and the data having the same coordinates as the clipped data is inserted into the clipped data through the join algorithm engine and joined to the same layer to be updated with the new object-based digital map ( S600).

The clipping of polygons by finding the map parts of objects related to terrain and features extracted through the Weiler-Atherton algorithm engine

First, select the object to be clipped from the object and the area and move the vertices one by one from the starting point and check whether the vertex is inside or outside the area.

Subsequently, when moving from outside to inside, the vertex is passed. When moving from inside to outside, the vertex is stored, and the vertex is moved to and stored in the corresponding vertex list of the area.

Subsequently, the area vertex list is moved, and when moving from the inside of the object to the outside, the vertex is saved and once again, the vertex list of the object is met. Let's do it.

In this way, repeated vertex movements until the first start point is encountered, creating independent multi-sided clipped polygons.

100: data receiving module 200: object-based map DB
300: data conversion module 400: data extraction module
500: data connection unit 600: object-based numerical map update control module

Claims (5)

A data receiving unit 100 receiving external completed construction drawings, survey data (satellite images, photos), and existing digital map 2.0 data and GIS (Geographic Information System) DB files and passing them to a data conversion module;
Object-based map DB (200) that stores unique object-based map data in the form of an integrated continuous DB by assigning UFID (Unique Feature Identifier) to a plurality of terrains and features in the target area. )Wow,
Comprehensive drawing, survey data (satellite image, photo), digital map 2.0 data, GIS DB file that read and read the completed drawings, survey data (satellite image, photo), digital map 2.0 data, GIS DB file received from the data receiver The coordinate system of UTM-K (Universal Transverse Mercator-Korea), which is the coordinate system of the object-based digital map, is outputted and converted. ), And a data conversion module 300 consisting of the UFID code setting unit 320,
Analyze the minimum spatial bound (MBR) of the object to be updated in the completed drawing, survey data, digital map 2.0 data, and GIS DB file converted from the data conversion module to the UTM-K coordinate system. Import only the object-based map data of the range to be updated from the object-based map DB, and compare the input data (completion drawing, survey data, digital map 2.0 data, GIS DB file) with existing object-based map data stored in the object-based map DB. A data extraction module 400 for extracting objects related to the terrain and features where the difference occurs;
A data linker 500 for accessing the object-based numerical map DB to perform a function of loading, storing, creating, updating, and deleting existing object-based numerical map data;
Check the error so that the input data (completed drawing, survey data, digital map 2.0 data, GIS DB file) are reflected in the existing object-based digital map data, and check the map part of the objects related to the terrain and features extracted through the data extraction module. After finding and clipping, the clipped data is stored as backup data, and the data having the same coordinates as the clipped data is inserted into the clipped data and joined to the same layer to be updated with the new object-based digital map. In the object-based digital map updating apparatus through clipping and join, which is configured to include an object-based digital map update control module 600,
The object-based numerical map update control module 600
In order to check the error so that the input data (completed drawing, survey data, digital map 2.0 data, GIS DB file) are reflected in the existing object-based digital map data, whether the surface object is closed, whether the point object is duplicated, or the object is divided. Spatial information check mode for checking whether it is missing, attribute information check mode for checking whether the unique identifier is missing or duplicated, and required attribute information is missing, and error checking mode in the DB that checks for errors based on overlapping, linkage, and crossover of objects. A data error checking unit 610 for dividing and checking data errors;
The clipping algorithm engine 620 forms a polygon clipped into a rectangular shape on the screen by finding the leaf parts of objects related to the terrain and features extracted through the data extraction module, and then stores the clipped data as backup data. and,
Search the data to be updated sequentially to search the survey data (satellite image, photo) with the same coordinates as the boundary of the clipped data, and then clip the survey data (satellite image, photo) with the same coordinates as the clipped data. A join algorithm engine 630 for inserting the data into the same layer and joining the same layer;
Clipping and joining, characterized in that the data history management unit 640 is stored in the selected table of the DB of the update start time and end time for each object, and manages the change situation of the object in a daily, monthly, yearly or specific period. Object-based digital map updating device through the network. delete delete delete delete

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