KR101304530B1 - Manufacturing methods of digital map used CAD program - Google Patents

Abstract

The present invention relates to a drawing method of a national basic map based on an autocad to use a digital topographic map and an attribute topographic map to implement three-dimensional spatial information and to secure compatibility between data formats.
The drawing method of the national base map based on the CAD to use the digital topographic map and the attribute topographic map to implement the three-dimensional spatial information according to the present invention and to ensure the compatibility between the data formats is based on the Auto CAD program. In the drawing production method of the national basic map consisting of a digital topographic map produced from a digital topographic map, a digital topographic map produced from the digital topographic map, and a digital topographic map produced from the digital topographic map. The Korean administrative name search step of searching for the Hangul administrative name from the attribute information of the attribute topographic map, the Hanja administrative name searching step of searching for the Hanja administrative name matching the Hangul administrative name searched from the administrative name database, and the searched Hanja administrative name Administrative name edition including the Chinese character administrative name registration step to register on digital topographic map And a road editing step of removing overlapping layers of intersection points of the roads in the planar layer of the road property, and removing a termination layer of the point where the road ends, wherein the removal of the road termination layer is performed by the road property. An angle calculating step of calculating a sum of the outer angles formed by one line segment adjacent to each of two adjacent line segments, and connecting the first and third vertices of the four consecutive vertices constituting the road layer. A terminal region determining step of determining whether all of the straight line and a straight line connecting vertices 2 and 4 are present in the road layer, and an angle calculated in the angle calculating step is a line segment corresponding to 500 degrees or more. In the vertical region determination step, the vertical segment removes the segment of the region determined to exist inside the road layer. Characterized in that passes through the end layer removing step.

Description

In order to realize three-dimensional spatial information, digital topographic maps and numerical topographic maps (digital topographic map Ver2.0) and digital topographic maps are produced, and national base map drawings are created to ensure compatibility between national base map data formats. {Manufacturing methods of digital map used CAD program}

The present invention creates a digital topographic map, an attribute topographic map (numerical topographic map Ver2.0) and a digital topographic map to implement three-dimensional spatial information, and based on autocad to ensure compatibility between national base map data formats with an extended format conversion function. It relates to a drawing production method of the national basic map.

The National Basic Map production service, which is carried out by the National Geographic Information Institute, is promoting the project with the strategy of improving national competitiveness, improving the quality of life of people, and building the information base of the electronic land, and constructing map data that can satisfy various demands in various fields. Aim to.

Based on these demands, the national basic map production service is made by the digital topographic map (Ver1.0) through precise location editing and structured editing. The official name of the source consists of various types of processes and map data, such as 'digital topographic map Ver2.0)' and 'digital topographic map', which is highly readable and manufactured according to the map diagram.

In these national basic map production services, each process of in-situ editing, structured editing, and drawing production editing has different commercial programs that are used to construct map data types to make use of the unique characteristics of digital topographic maps, attribute topographic maps, and digital topographic maps. Several programs with specific characteristics are used. The Auto CAD program is used for in-place editing to create a digital topographic map, the Geo_dt program is used for structured editing for producing an attribute topographic map, and the Auto_map program is used for drawing production editing for a digital topographical map.

Although the digital topographic map, attribute topographic map, and digital topographic map data are the result of the process of in-place editing, structured editing, and drawing production editing, they are based on the in-place edited digital topographic map, and the connection between each map data is very important. .

However, in the related art, as each program is used as described above, there is a problem in compatibility between map data formats for each process, and it cannot be supplemented by batch editing that provides linkage between processes when supplementing / modifying data. There will be inefficiencies in unity.

Therefore, the present invention is a unit process by performing a basic base map based on Auto cad, while converting data smoothly between various process types (Ver1.0, Ver2.0, topographical map production) between processes It is a technology to provide efficient management and to provide linkage and uniformity between final data of each process. In addition, it is a scalable data format conversion program that implements DB expansion and automatic data update function that can be used in the future by implementing the function to perform automatic Chinese characterization of administrative names.

The present invention is devised to solve the problems caused by using different programs in the in-situ editing, structured editing, drawing production editing process for the production of digital topographical map, attribute topographical map, digital topographic map in the national basic map production service as described above. As the invention, it is possible to use each process based on CAD program for smooth compatibility between the data formats of each process, so that the efficient management between the processes and the linkage and unity between the final map data of each process are improved. The purpose is to provide.

In addition, it is another object to provide a drawing method of the national basic map which performs automatic Chinese characters of the administrative name and registers it in the digital topographical map.

In order to realize the three-dimensional spatial information according to the present invention for achieving the above object, a digital topographic map and a digital topographic map (numerical topographic map Ver2.0) and a digital topographic map are produced. In order to ensure this, the drawing production method of national basic map based on AutoCAD

In a drawing method of a national basic map consisting of a digital topographical map produced from a digital topographical map produced from a digital topographic map, a numerical topographical map produced from the digital topographic map, a digital topographical map produced based on an Auto CAD program,

Drawing production editing step for producing the digital topographic map

A search for a Hangul administrative name in the attribute information of the attribute topographical map; a search for a Hanja administrative name for searching for a Hangul administrative name matching the searched Hangul administrative name in the administrative name database; An administrative name editing step including a kanji administrative name registration step for registering a topographic map;

A road editing step that removes the overlapping layer at the intersection of the roads from the face layer of the road properties and removes the vertical layer at the end of the road,

Removal of the road termination layer

An angle calculating step of calculating a sum of an outer angle formed by one of the line segments on both sides adjacent to each other and forming a line layer of the road property;

An end region determination step of determining whether all of the straight lines connecting the first and third vertices of the four consecutive vertices constituting the road layer and the straight lines connecting the second and fourth vertices exist inside the road layer;

An end layer removing step of removing a line segment of an area whose angle calculated in the angle calculating step is equal to or greater than 500 degrees, and in the end region determining step, the line segment of the region determined to exist in the road layer by two straight lines. Characterized by passing through.

And the drawing production editing step

And a symbol registration step of registering a symbol representing an attribute of the object at a corresponding position on the digital topographic map.

If the layer of the position where the symbol is to be registered is a face type, the symbol registration step

A center position calculation step of calculating a center position from vertices of the face;

An internal / external determination step of determining whether the central position exists inside or outside of the plane by calculating the number of intersection points between the first straight line passing through the plane at the calculated center position and the line segment constituting the plane;

In the internal and external determination step, when the center position is determined to be an external point, the shortest corner vertex of the plane at the shortest distance from the central location and the central location, and a second straight line passing through the center location and the shortest vertex vertex And a center position correction step of extracting an intersection point intersecting to and correcting the extracted shortest vertex and an intermediate point of the intersection point into a new center position.

The symbol may be registered at an internal center position determined in the internal / external determination step or an internal center position modified in the center position correction step.

In order to realize the three-dimensional spatial information according to the present invention having such a configuration, a digital topographic map, an attribute topographic map (numerical topographic map Ver2.0), and a digital topographic map are produced. The drawing production method of national base map based on autocad is produced by digital topographic map, attribute topographic map, digital topographic map by performing each process based on Auto CAD which is widely distributed and easy to use when making national base map. It is compatible to convert data smoothly between process-specific map data formats. As a result, efficient management between unit processes and linkage and unity between final data of each process can be provided.

In addition, it performs automatic Chinese characterization of the administrative name and registers it in the digital topographic map, Hangeul and Chinese characters of the administrative name are made into a DB, and the administrative name data of the DB is automatically updated to provide accurate and rapid data for the national basic map work. In addition to updating the national basic map, which is a form of data, it is expected to play a role in efficient and systematic management of national spatial information and update of data.

1 is a schematic process diagram of a drawing production method of a national basic diagram according to the present invention.
2 is an example of a geographic survey drawing and a digital topographical map reflecting the same.
3A and 3B are views for explaining the administrative name editing step.
4A, 4B, and 4C are diagrams for explaining an editing step of a road layer.
5 a and b are diagrams for explaining a symbol registration step in a face type layer;
6A, 6B, and 6C are exemplary diagrams of a digital topographic map, an attribute topographic map, and a digital topographic map produced using the present invention;

In order to implement the three-dimensional spatial information according to the present invention with reference to the drawings, a digital topographic map and a digital topographic map (numerical topographic map Ver2.0) and a digital topographic map are produced. In order to secure, the CAD-based national basic map production method will be described in more detail.

For reference, in the national basic map production service conducted by the National Institute of Information and Information, the digital map edited on the official position is the 'digital topography', the structured and edited digital map is the 'digital topographic map Ver2.0', and the digital map with the drawing editing. Is using a digital topographic map. Therefore, in the present invention, the digital map edited in position is 'digital map' or 'digital map Ver1.0', and the structured edited digital map is 'digital map Ver2.0' or 'property topographic map', Used as the name of 'digital topographical map'.

As shown in Fig. 1, the method for producing a national basic map according to the present invention roughly includes an exact position editing step (S10) for producing a digital topographic map (numerical topographic map Ver1.0), and a property topographic map (numeric topographic map Ver2.0). Structural editing step (S20), it is composed of a drawing production editing step (S30) for producing a digital topographic map that can be easily read by the general public.

In order to build the digital topography Ver1.0, we first conduct a geographic survey.

Geographical surveys are carried out using orthoimages and drawing data taken from aircraft according to the National Geographic Information Institute's "Measures on Numerical Mapping Work" and "National Basic Map Survey and Editing Guidelines".

In the exact position editing step (S10) reflects the information obtained by the geographic survey as described above to produce a digital topographic map Ver1.0.

The exact position editing step (S10) is a task of modifying and supplementing the digital topographic map so that newly created, extinguished, or changed features are represented by reflecting the geographic survey matters on the existing digital topographic map.

FIG. 2 shows an example of a geographic survey drawing (left) in which geographic survey matters are described, and a digital topographic map (right) that has been corrected and supplemented by reflecting this.

The structured editing step (S20) eliminates logical contradictions and geometric distortion problems of the geometry information of the digital topographical map produced in the exact position editing step (S10) (i.e., updating the shape information (S21)), and properties for each object. The information is assigned (S23) to produce an attribute map.

The problem of logical contradictions and geometric distortions has been eliminated, and the attribute topographic map, which is provided with attribute information for each object, is the foundation of the nationwide numerical map map DB, which builds up a tank of phases between objects.

Geometry information representing a digital topographic map and an attribute topographic map consists of points, lines, and planes.In a digital topographic map, geometric information about objects such as roads, tributaries, rivers, and borders is represented linearly. In the structured editing step (S20), the object information represented by a line or plane having a logical contradiction or geometric distortion in the figure information of the digital topographic map is represented by a face or a line to remove the logical contradiction and geometric distortion. Update to.

In the structured editing step S20, attribute information is matched to each figure information representing an object.

The drawing production editing step (S30) produces a digital topographic map suitable for the map diagram so that the general public can easily read.

The drawing production editing step (S30) combines the shape information of the numerical topographical map produced in the exact position editing step (S10) and the shape information of the property topographical map produced in the structured editing step (S20) and fits the map information. Create and register a symbol (symbol), cycle, administrative name, etc. according to the map diagram in the generated figure information.

Since the digital topographical map, the property topographical map and the digital topographical map should be produced according to the same rules as the standard schematic or the map schematic, respectively, the exact position editing step (S10) and the structured editing step, which are major components of the national basic map production method according to the present invention. (S20) and the drawing production editing step (S30) itself has been briefly described as being no different from the prior art.

Hereinafter, a detailed component (detailed procedure) in which the national basic map manufacturing method according to the present invention is differentiated from the prior art will be described in more detail.

First, the present invention compared with the prior art, the exact position editing step (S10), the structured editing step (S20) and the drawing production editing step (S30) based on the CAD (Auto CAD) program, the digital topographic map, attribute topographic map and It is different in that it produces a digital topographic map.

As described above, the conventional CAD uses the Auto CAD program in the in-place editing for producing the digital topographic map, the Geo_dt program in the structured editing for producing the attribute topographic map, and the Auto_map program in the drawing production editing for the digital topographical map. Since there is insufficient compatibility between data formats, each process (i.e., in-position editing, structured editing, and drawing production editing) reads data produced by other processes, converts it into data in a format suitable for one's own process, and edits them. It was difficult to utilize in. However, according to the present invention, each process is based on a CAD program, and compatibility between data formats is secured so that each process reads data produced in another process stably and swiftly and without errors, and the read data is directly edited or the like. It can be used for.

Next, in the detailed procedure of the drawing production editing step (S30) for producing a digital topographical map according to the map schematic, the administrative name editing step (S35) of automatically converting and registering the Korean administrative name into the Chinese character administrative name is registered with the prior art. It has technical characteristics that are different.

The production of national maps requires the operation of Chinese characters into digital maps. In the prior art, the Chinese characters of the administrative name are used to find the administrative name input by the worker in Korean (the Korean administrative name is registered in the attribute information of the attribute topographic map) and convert the name directly into the Chinese character administrative name. The conventional method of manually converting and registering kanji administrative names has a problem that it is time-consuming and difficult to confirm whether it is converted to the correct kanji.

In order to solve the problem of the existing method of manually converting and registering the Chinese character administrative name, the present invention provides an administrative name database having the entire administrative name, the Korean administrative name, the Chinese character administrative name, and the leaf number of the corresponding administrative layer as shown in FIG. 3B, the Korean administrative name is converted into a Chinese character administrative name and registered through the administrative name editing step shown in FIG.

Referring to FIG. 3B, the administrative name editing step S35 is composed of the Korean administrative name searching step S351, the Chinese character administrative name searching steps S353 and S355, and the Chinese character administrative name registering steps S357 and S359.

When the layer having the stroke attribute is selected from the figure information of the digital topographic map in which the figure information of the digital topographic map and the figure information of the attribute topographic map are selected, the Korean administrative name search step (S351) searches the Korean administrative name of the selected layer from the attribute information. The Chinese character administrative name searching step (S353, S355) searches the Chinese character administrative name matching the searched Korean administrative name in the administrative name database, and the Chinese character administrative name registering steps (S357, S359) searches the searched Chinese character administrative name. In the graphic information of the digital topographical map, it is registered and recorded in the corresponding administrative layer. At this time, if the same Korean administrative name is registered in the administrative name database, for example, when the Korean administrative name searched in the attribute information is 'Daecheon-ri', 'Daecheon-ri, Hucheon-myeon, Hamyang-gun, Gyeongsangnam-do' It is necessary to confirm whether the searched Hangul administrative name 'Daecheon-ri' is Daecheon-ri of Hamyang-gun or Daecheon-ri of Uiryeong-gun. This check is based on whether the leaf number registered in the attribute information of the selected layer matches the leaf number registered in the administrative name database. Check it.

In addition, the administrative name database can be continuously added and updated in the process of registering the Chinese character administrative name on the digital topographic map, thereby providing accurate and rapid data to the national map production work.

Next, the present invention has a technical feature that the road editing step (S33) for editing the layer of the road property in the detailed procedure of the drawing production editing step (S30) for producing a digital topographic map according to the map diagram is distinguished from the prior art. .

For reference, the layer refers to points, lines, planes, symbols (symbols), periods, etc. constituting figure information represented on a map (digital topographical map, attribute topographical map, digital topographical map). It is classified into a total of 104 layers according to the types and characteristics of the features (objects) represented. For example, the shape information of traffic property is 22 layers, the shape information of building property is 2 layers, the shape information of facility property is 55 layers, the shape information of vegetation property is 4 layers, and the shape information of water system property is Eight layers, topographical information of five layers, topographical information of five layers, and periods of five layers are represented on the map. Each layer is assigned its own color, thickness, and linetype, depending on the schematic and the scale.

In principle, the digital topographic map does not have overlapping layers. However, there are many overlapping layers of figure information in which the figure information of the digital topographic map and the figure information of the attribute topographic map are collected.

The properties of the overlapped layers are typical of roads. In addition to roads, there are tributaries, administrations, and outlines (outside the map).

The road editing step S33 is a process of removing the overlapped layer and the termination layer from the planar layer of the road property.

Editing a road removes the layer at the intersection of the road and where the road ends (or begins).

Referring to the figure information on the left side of FIG. 4A, since the intersection points where the roads 21 to 24 and the roads 21 to 24 are many are blocked by the layer 27, the blocked portions (that is, the overlapped portions ( 27)). This process removes all layers where the road and the road meet each other and can be said to be a simple task because it is only necessary to determine whether the layers overlap.

However, it is not easy to automatically determine the termination layer at the end or beginning of the road. In particular, automatic determination of the termination layer is difficult when the road is bent several times as shown in FIG. 4B.

The determination of whether the road is an end layer is determined through an angle calculation step S331 and an end area determination step S333 as shown in FIG. 4C. This judgment is based on the geometrical characteristics of the road.

The angle calculating step (S331) calculates the sum of the outer angles formed by the line segments on both sides adjacent to one line segment constituting the road layer,

The determining of the end region (S333) includes whether a straight line connecting the first and third vertices of the four consecutive vertices constituting the road layer and a straight line connecting the second and fourth vertices exist inside the road layer. To judge.

If the angle calculated in the angle operation step S331 is 500 degrees or more, it may correspond to a termination layer. Referring to FIG. 4B, the line connecting ④ and ⑤ exceeds 500 degrees (θ1 + θ2; about 540 degrees).

In the terminal region determination step (S333), the line segments of the region where the two straight lines are determined to exist inside the road layer are the targets of the terminal layer. 4B, the line segments ④ through ⑦ correspond to the line segments in the termination region.

The layer (line segment connecting ④ and ⑤ in FIG. 4B) that satisfies both the angle calculation step S331 and the termination region determination step S333 is a termination layer of the road through a termination layer removal step S335. Removed.

Next, the present invention is a symbol registration for registering a symbol (symbol) to express the properties of the object in the detailed procedure of the drawing production editing step (S30) to produce a digital topographic map in accordance with the map schematic to the corresponding position of the digital topographic map There is a technical characteristic that is different from the prior art in step S31.

The symbol registration step (S31) is to register a symbol representing a paddy field, a field, a school, an athletic stadium, a national reference point, and the like on a digital topographic map. It is simple to register the symbol at the location of the point.However, when registering a symbol that symbolizes the feature (object) on the line or face of the figure, information on the position where the symbol is registered exists in the figure or attribute information. In order to register the symbol at the center point of the plane or line, the symbol registration step is necessary.

The feature to register the symbol is mainly a building, vegetation, water system, road center line, etc., and the registration of period or text also uses the symbol registration method.

In the symbol registration step S31, the symbol is registered in the line type layer and the face type layer in the digital topographical figure information.

The feature of the line type layer in which the symbol (or cycle) is registered is a road center line or a river boundary line. Examples of the registered symbol (or cycle) are [road sign-road number-road name], [river name]. And the like.

In the linetype layer, the center point is determined as the midpoint of both ends of the linetype layer. That is, the coordinates (X, Y) of the registered center point of the symbol are X = (x1 + x2) / 2 and Y = (y1 + y2) / 2.

In this case, when the curvature of the line type layer is large and the shortest distance between the middle point of both ends and the line type layer is long, it is desirable to reduce the shortest distance by moving the center point where the symbol is registered on a straight line connecting the middle point and the shortest point. can do.

Representative features of the face type layer where a symbol is registered are paddy fields, fields, and buildings.

When the face type layer is not a simple shape such as a rectangle, it is not easy to automatically calculate and determine the center point where the symbol is registered.

As shown in FIG. 5C, the symbol registration step S31 in the plane type layer includes a center position calculation step S311, an inner / outer determination step S313, and a center position correction step S35.

The center position calculating step S311 calculates a center position from vertices of a corresponding surface.

That is, the average value of the coordinates (x, y) of the vertices constituting the plane becomes the center position coordinates (X, Y). X = (x1 + x2 ... + xn) / n, Y = (y1 + y2 ... + yn) / n, where n represents a vertex.

The internal and external determination step (S313) is a step of determining whether the center position calculated in the center position calculation step (S311) is inside or outside of the corresponding surface.

Referring to FIG. 5A to determine whether it is present inside or outside, an intersection point 5 at which the first straight line 7 passing through the surface and the line segment 1 constituting the surface intersects at the calculated central position 3 It is determined whether the center position exists inside or outside the surface by calculating the number of.

As shown in Fig. 5A, when the center position 3 is inside the plane, there are an even number of intersections 5, and when it is outside, there are even numbers.

When it is determined in the internal and external determination step (S313) that the central position exists inside the plane, the symbol registration step is completed by registering the symbol at the important position, but when the external location is present, the central position correction step (S315) is performed. Correct the center position inside.

Referring to FIG. 5B, the center position correcting step S315 corresponds to the shortest distance from the center position 13 and the center position when the center position 3 is determined to be an external point in the inner and outer determination step S313. The shortest corner vertex 12 of the face and the second straight line 17 passing through the center position and the shortest corner vertex extract an intersection point 15 intersecting the line segment 11 of the face, and the extracted shortest corner vertex The midpoint of (12) and the intersection point 15 is corrected to a new center position 13A. The symbol is registered at the modified center position (S317).

If the symbol or period has the same object as the surrounding information (that is, when there are several features of the same type nearby), only one representative is registered. For example, when a feature is a building, the symbol is registered on the representative of the largest area.

6A, 6B and 6C show an example of a digital topographic map edited in place, a structured edited topographic map, and a digitally produced topographic map edited using the present invention.

In the above description of the present invention, a country based on CAD for using a digital topographic map and an attribute topographic map to implement three-dimensional spatial information in a specific procedure and method with reference to the accompanying drawings, and for ensuring compatibility between data formats. Although a method for manufacturing a drawing of a basic diagram has been described, the present invention may be variously modified and changed by those skilled in the art, and such modifications and changes should be interpreted as falling within the protection scope of the present invention.

Claims (2)

In a drawing method of a national basic map consisting of a digital topographical map produced from a digital topographical map produced from a digital topographic map, a numerical topographical map produced from the digital topographic map, a digital topographical map produced based on an Auto CAD program,

Drawing production editing step for producing the digital topographic map
A search for a Hangul administrative name in the attribute information of the attribute topographical map; a search for a Hanja administrative name for searching for a Hangul administrative name matching the searched Hangul administrative name in the administrative name database; An administrative name editing step including a kanji administrative name registration step for registering a topographic map;
A road editing step that removes the overlapping layer at the intersection of the roads from the face layer of the road properties and removes the vertical layer at the end of the road,

Removal of the road termination layer
An angle calculating step of calculating a sum of an outer angle formed by one of the line segments on both sides adjacent to each other and forming a line layer of the road property;
An end region determination step of determining whether all of the straight lines connecting the first and third vertices of the four consecutive vertices constituting the road layer and the straight lines connecting the second and fourth vertices exist inside the road layer;
An end layer removing step of removing a line segment of an area whose angle calculated in the angle calculating step is equal to or greater than 500 degrees, and in the end region determining step, the line segment of the region determined to exist in the road layer by two straight lines. Characterized in that
In order to realize three-dimensional spatial information, digital topographic maps and numerical topographic maps (digital topographic map Ver2.0) and digital topographic maps are produced, and national base map drawings are created to ensure compatibility between national base map data formats. .
The method of claim 1,
The drawing production editing step
And a symbol registration step of registering a symbol representing an attribute of the object at a corresponding position on the digital topographic map.

If the layer of the position where the symbol is to be registered is a face type, the symbol registration step
A center position calculation step of calculating a center position from vertices of the face;
An internal / external determination step of determining whether the central position exists inside or outside of the plane by calculating the number of intersection points between the first straight line passing through the plane at the calculated center position and the line segment constituting the plane;
In the internal and external determination step, when the center position is determined to be an external point, the shortest corner vertex of the plane at the shortest distance from the central location and the central location, and a second straight line passing through the center location and the shortest vertex vertex And a center position correction step of extracting an intersection point intersecting to and correcting the extracted shortest vertex and an intermediate point of the intersection point into a new center position.
The symbol is registered in the internal center position determined in the internal or external determination step or the internal center position corrected in the center position correction step.
In order to realize three-dimensional spatial information, digital topographic maps and numerical topographic maps (digital topographic map Ver2.0) and digital topographic maps are produced, and national base map drawings are created to ensure compatibility between national base map data formats. .

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