KR102276451B1 - Apparatus and method for modeling using gis - Google Patents

Abstract

A modeling apparatus is provided. The modeling apparatus includes: a first obtaining unit for obtaining GIS (Geographic Information System) information of the object; a second acquisition unit for acquiring a photographic image of the object; a first modeling unit for generating a basic shape of the object in a virtual three-dimensional space using the GIS information; It may include; a second modeling unit for generating the actual appearance of the object using the photographic image of the object and the basic outline.

Description

Modeling apparatus and method using GIS {APPARATUS AND METHOD FOR MODELING USING GIS}

The present invention relates to an apparatus and method for shaping an image of an object in a virtual space.

Reality The digital twin, which digitizes the physical real space and projects it into the virtual space, is largely carried out in two ways. The first is an image linkage model that implements a set area using images obtained by scanning a city with an aircraft. The second is the BIMGIS (Building Information Module & Geographic Information System) interworking model that implements the setting area using an authoring tool such as CAD.

In Korea Patent Publication No. 1934308, unit object information for each building included in the road name address DB is extracted, attribute information including address information and location information for the unit object information is extracted, and the extracted information from the satellite map DB is extracted. The content of generating three-dimensional modeling data by selecting a matching image, which is an image corresponding to unit object information, and combining the numerical surface model with the matching image is disclosed.

Korean Patent Publication No. 1934308

The present invention is to provide a modeling apparatus and method for generating a digital twin model using GIS.

The modeling apparatus of the present invention includes: a first obtaining unit for obtaining GIS (Geographic Information System) information of the object; a second acquisition unit for acquiring a photographic image of the object; a first modeling unit for generating a basic shape of the object in a virtual three-dimensional space using the GIS information; It may include; a second modeling unit for generating the actual appearance of the object using the photographic image of the object and the basic outline.

The modeling apparatus of the present invention generates a primary model modeling the building using GIS (Geographic Information System) information of the building, and uses an actual numerical topographic map for at least one of roads, facilities, and topography excluding the building. a first modeling unit for modeling; Second modeling for modeling the roof of the building matching the photographic image of the building and mapping it to the roof position of the primary model, or modeling the texture of the building matching the photographic image and mapping it to the wall of the primary model may include;

The modeling method of the present invention comprises the steps of obtaining GIS (Geographic Information System) information of a building; generating a first model of the building in a virtual three-dimensional space using the GIS information; modeling at least one of a road, a facility, and a topography excluding the building on the three-dimensional space using a numerical topographic map; obtaining a photographic image of the object; Modeling the roof of the building matching the photo image and mapping it to the roof position of the first model, or modeling the texture of the building matching the photo image and mapping it to the wall surface of the first model. can

The modeling apparatus and method of the present invention uses a three-dimensional generation algorithm and a reference coordinate system setting function in the GIS tool, unlike the existing method in which the creation and editing of individual building models are created and edited in separate software and then combined to create a city model. Multiple modeling tasks can be simplified.

According to the first modeling unit corresponding to the GIS tool in which the reference coordinate system is additionally set, the possibility of modeling errors can be significantly reduced compared to the existing modeling method that had to be performed manually for each building.

Using public GIS information provided by the government as an open source, this technology can simplify the entire process in terms of city 3D shape information and production of service applications using it.

The modeling apparatus and method of the present invention may automatically generate a three-dimensional city model facility model using GIS information.

1 is a schematic diagram showing a modeling apparatus of the present invention.
2 is a schematic diagram showing a basic external appearance and an actual external appearance of an object;
3 is a schematic diagram illustrating a texture model of an object.
4 is a schematic diagram showing a virtual three-dimensional space formed by the modeling apparatus of the present invention.
5 is a schematic diagram showing the topography.
6 is a flowchart illustrating a modeling method of the present invention.
7 is a diagram illustrating a computing device according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

In the present specification, duplicate descriptions of the same components will be omitted.

Also, in this specification, when it is mentioned that a certain element is 'connected' or 'connected' to another element, it may be directly connected or connected to the other element, but another element in the middle. It should be understood that there may be On the other hand, in this specification, when it is mentioned that a certain element is 'directly connected' or 'directly connected' to another element, it should be understood that the other element does not exist in the middle.

In addition, the terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention.

Also, in this specification, the singular expression may include the plural expression unless the context clearly dictates otherwise.

Also in this specification, terms such as 'include' or 'have' are only intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, and one or more It should be understood that the existence or addition of other features, numbers, steps, operations, components, parts or combinations thereof is not precluded in advance.

Also in this specification, the term 'and/or' includes a combination of a plurality of listed items or any of a plurality of listed items. In this specification, 'A or B' may include 'A', 'B', or 'both A and B'.

Also, in this specification, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention will be omitted.

1 is a schematic diagram showing a modeling apparatus of the present invention. 2 is a schematic diagram showing a basic external appearance and an actual external appearance of an object; 3 is a schematic diagram illustrating a texture model of an object.

The modeling apparatus illustrated in FIG. 1 may include a first acquisition unit 110 , a second acquisition unit 120 , a first modeling unit 130 , and a second modeling unit 140 .

The first acquisition unit 110 may acquire Geographic Information System (GIS) information g of the object from an external server.

GIS is a complex geographic information system that collects topographic information such as general maps and related information such as underground facilities with satellites, writes them on a computer, and enables them to be searched and analyzed. Necessity is being emphasized in areas such as land planning and urban planning, water resource management, communication/transport network construction, land management, and installation of underground facilities.

GIS is an amalgamation of computer hardware and software, geographic data, and human resources designed to effectively collect, store, update, coordinate, analyze, and present all geographically referenceable forms of information. A computer system that collects data and makes it available.

GIS stores, extracts, manages, stores, extracts, manages, and manages topographical information that spatially expresses location and non-graphical attribute information that explains/complements its shape and function for the reference of various earth surface information by linking it with the management functions of graphics and databases. It is an information system-related technology that analyzes and supports users. It is also a comprehensive analysis tool that expresses the spatial relationship of a map by adding characteristic (attribute) information of topographic information. Geographic data occupying a spatial location and related attribute data are integrated and processed. It is based on RFID technology, GPS technology, LBS technology, and the like. Since most data processed by computers is closely related to spatial data, GIS is very useful in land information management, facility management, transportation, urban planning and management, environment, weather forecasting, agriculture, disasters and disasters, education, population forecasting, etc. used in a wide range of fields.

The object is an object that can be displayed on a map and may include a building, a road, a facility, a topography, and the like.

The GIS information g may be stored in an external server operated by the government or the like. The first acquisition unit 110 may communicate with an external server and receive GIS information g from the external server.

The second acquisition unit 120 may acquire a photographic image i of the object. The photo image i may include both a single general photo and a video in which a plurality of frames are continuous. Since the photographic image i optically includes the actual appearance of the object, the actual appearance of the object can be grasped by using the photographic image i.

The first modeling unit 130 may generate the basic shape b of the object in a virtual 3D space using the GIS information g.

The virtual three-dimensional space may represent a space in which three axes orthogonal to each other are used as a reference coordinate axis k. In this case, the three axes may be referred to as an x-axis, a y-axis, and a z-axis.

The coordinate axis k forming the virtual three-dimensional space may be similar to a reduction of the actual coordinate axis.

In GIS information g, which contains information on large-scale areas, it is difficult to realistically reflect the detailed actual appearance of individual buildings. Accordingly, the basic shape b of the object generated by the first modeling unit 130 based on the GIS information g may be slightly different from the actual shape r.

The first acquirer 110 may acquire external information of the object, for example, height, width, thickness, and the like, from the GIS information. The first modeling unit 130 may generate the basic shape b by using the external shape information of the object as it is.

For example, even if there is a window on the outer wall of the actual building and a pointed roof on the upper surface of the building, the window and the roof may be excluded from the basic shape b of the corresponding building generated using the GIS information g. For example, the basic shape b is generated according to text information such as height, width, and thickness information of the corresponding building included in the GIS information g, so it can be formed in a simple hexahedral shape based on height information, width information, and thickness information. .

The second modeling unit 140 may generate the actual outer shape r of the object using the photographic image i and the basic outer shape b of the object. The actual appearance r may follow the actual appearance of the object in the real world. It may be preferable that the actual shape r is formed to resemble the actual shape as much as possible within a technically acceptable range.

The three-dimensional space may have a coordinate axis that matches coordinate information of the GIS. Since the coordinate information of the GIS is coordinate information of the real world, a three-dimensional space having a coordinate axis matching the GIS coordinate information may correspond to a virtual space in which the real world is projected. Of course, it may be formed in a reduced state to a smaller scale than the real world.

A digital twin model including an object can be formed in a three-dimensional space through the coordinate axis.

The first modeling unit 130 may generate a basic shape b in the digital twin model.

The second modeling unit 140 may generate an actual external shape r in the digital twin model, and may replace the basic external shape b with the actual external shape r.

The first acquisition unit 110 may acquire the ID of the object.

The first modeling unit 130 may determine the type of the object by using the ID of the object. The type of object may include an apartment, a townhouse, a detached house, a shopping mall, a factory, and the like. The first modeling unit 130 may generate the basic external shape b of the object using a representative diagram representing the type of the object. The first modeling unit 130 may enlarge or reduce the basic shape b according to the scale and then arrange it in a three-dimensional space.

For example, when the corresponding object is identified as an apartment using the ID of the object, the first modeling unit 130 may generate a basic appearance b using the representative diagram of the apartment.

Meanwhile, a basic appearance corresponding to each ID may be stored in the database instead of the representation. In this case, the first modeling unit 130 may search the database for the basic shape b of the object by using the ID of the object. The first modeling unit 130 may extract the basic shape b of the searched object, enlarge or reduce it according to a scale, and then arrange it in a three-dimensional space.

As shown in FIG. 2 , the second modeling unit 140 may acquire the basic shape b disposed in the three-dimensional space and may transform the basic shape b according to the photo image i.

For example, the second modeling unit 140 may deform the basic contour b by forming a groove t1 on the outer surface of the basic contour b according to the photo image i, or forming a protrusion t2.

The basic shape b transformed by the second modeling unit 140 becomes the first actual shape r1, and the first actual shape r1 may follow the GIS standard of the initial basic shape as it is. As a result, the actual appearance r1 may also be displayed in the virtual space by being projected in a scaled state of the actual object in the real world.

The second modeling unit 140 may generate a roof model p of the object according to the photo image i. The second modeling unit 140 may attach the roof model p to the upper surface of the deformed basic shape.

The second modeling unit 140 may generate a texture model t3 of the object according to the photo image i. The second modeling unit 140 may attach the texture model t3 to the outer wall of the deformed basic shape.

In the present specification, a state in which a groove t1 and a protrusion t2 that follow the actual appearance are formed on the outer surface of the basic outline o, and a roof model p is attached to the upper surface of the basic outline o is represented by the first actual outline r1. In addition, the state in which the texture model t3 is attached to the outer wall of the first actual external shape r1 is represented by the second external shape r2. The first actual external shape r1 and the second actual external shape r2 are closer to the actual shape of the object compared to the basic external shape b, and the first actual external shape r1 is displayed as the actual external shape r or the second actual external shape according to the user's selection r2 may be denoted as the actual contour r.

When the roof model p and the texture model t3 are attached to the deformed basic shape, the second modeling unit 140 may group the basic shape b, the roof model p, and the texture model t3 into one group in a three-dimensional space. The grouped basic appearance, roof model, and texture model can be treated as one object in 3D space. 3 shows three apartment models. The apartment model on the far left represents a stage before applying the texture model t3 to the first actual shape r1, and the apartment model in the middle represents the state in which the texture model t3 is attached to the first actual shape r1. An external shape obtained by importing the texture model t3 into the first actual external shape r1 is represented by a second actual external shape r1. The apartment model on the far right in FIG. 3 shows the process of grouping the basic appearance, the roof model, and the texture model into one object. To reduce the processing load of the digital twin system that implements a three-dimensional space, the basic appearance, roof model, and texture model can be grouped by using a virtual cube m circumscribed to the basic appearance, roof model, and texture model. The corresponding virtual cube m is represented by the second actual shape r2, but the basic shape, the roof model, and the texture model may be arithmetically processed as one virtual cube m in the 3D virtual space.

The second acquirer 120 may acquire the roof model p of the object or the wall texture of the object by using the photo image i. The second modeling unit 140 may attach the roof model p to the upper surface of the basic outline of the object. The second modeling unit 140 may attach the wall texture of the object to the basic external side of the object. The wall texture may include a texture model t3.

The wall texture may include a wall color, a window, a balcony, and the like. In general, windows and the like are not formed at equal intervals on all sides. Accordingly, the wall texture of the same object may be different depending on the direction. For example, the texture of the wall of an apartment may vary depending on which side the apartment is viewed from, east, west, north, south, and south. In summary, the texture of the wall in an apartment can be different depending on the direction. In order to apply different wall textures according to the direction, the second acquisition unit 120 may acquire information on the photographing angle of the photo image on the GIS coordinates. Using the photographing angle information, it is possible to determine which side of the photographic image i represents the object. The second modeling unit 140 may select the external surface of the object on which the photographic image is to be applied by using the photographing angle information.

The second modeling unit 140 may analyze the shape of the roof of the object using the photo image i. The second modeling unit 140 may extract a roof model p matching the analysis result of the roof shape from a database in which a plurality of roof models p are stored. The second modeling unit 140 may attach the roof model p extracted from the database to the upper part of the basic shape b.

4 is a schematic diagram showing a virtual three-dimensional space formed by the modeling apparatus of the present invention.

As shown in FIG. 4 , an innumerable number of objects may exist in a virtual three-dimensional space. If all innumerable objects are all done by hand, it is obvious that it will take a lot of time just to form the basic shape b. In addition, if you want to implement the actual shape r, it may take a lot of work time so that it is difficult to predict. According to the present invention, the basic shape b may be automatically generated using GIS information. In addition, the actual contour r may also be automatically generated. According to the user's selection, the first actual shape r1 to which the groove t1, the protrusion t2, and the roof model p are applied is displayed on the outer surface of the basic shape b, or the second actual shape r1 in which the texture model t3 is added to the first actual shape r1 according to the user's selection The actual contour r2 may be displayed.

5 is a schematic diagram showing the topography.

Terrain information may be added to represent the real object as it is and to provide an accurate digital twin system. In the real world, various buildings are built on the ground, and the height of the ground depends on the location. In order to reflect such an environment, the first modeling unit 130 may arrange the topography of the ROI in a three-dimensional space using GIS information.

As shown in FIG. 5 , the first modeling unit 130 may display the terrain by assigning a height according to the GIS information. 5 may represent a state in which the terrain is viewed from the side. The first modeling unit 130 may display the terrain by assigning a height according to the GIS information. You can place the basic contour b of the object on the terrain.

In order to represent the building in consideration of the topography, the first modeling unit 130 may generate a first model modeling the building using Geographic Information System (GIS) information of the building. The first-order model can be represented by the basic shape b. The first modeling unit 130 may model at least one of a road, a facility, and a topography excluding a building using an actual numerical topographic map.

The second modeling unit 140 may model the roof of the building that matches the photograph image i of the building and map it to the location of the roof of the first model. Alternatively, the second modeling unit 140 may model the texture of the building matching the photo image i and map it to the wall surface of the first model.

6 is a flowchart illustrating a modeling method of the present invention.

The modeling method shown in FIG. 6 may be performed by the modeling apparatus of FIG. 1 .

It is possible to obtain GIS (Geographic Information System) information of the building (S510).

A first model of a building may be generated in a virtual three-dimensional space by using the GIS information (S520). The three-dimensional space may have a coordinate axis k matching the GIS coordinate information. A digital twin model including a building can be formed in a three-dimensional space through the coordinate axis k.

At least one of a road, a facility, and a topography excluding a building may be modeled in a three-dimensional space using a numerical topographic map ( S530 ).

A photographic image i of the building may be acquired (S540).

The roof of the building matching the photo image i may be modeled and mapped to the roof position of the first model, or the texture of the building matching the photo image i may be modeled and mapped to the wall surface of the first model ( S550 ).

7 is a diagram illustrating a computing device according to an embodiment of the present invention. The computing device TN100 of FIG. 7 may be a device (eg, a modeling device, etc.) described herein.

In the embodiment of FIG. 7 , the computing device TN100 may include at least one processor TN110 , a transceiver device TN120 , and a memory TN130 . In addition, the computing device TN100 may further include a storage device TN140 , an input interface device TN150 , an output interface device TN160 , and the like. Components included in the computing device TN100 may be connected by a bus TN170 to communicate with each other.

The processor TN110 may execute a program command stored in at least one of the memory TN130 and the storage device TN140. The processor TN110 may mean a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which methods according to an embodiment of the present invention are performed. The processor TN110 may be configured to implement procedures, functions, methods, and the like described in connection with an embodiment of the present invention. The processor TN110 may control each component of the computing device TN100 .

Each of the memory TN130 and the storage device TN140 may store various information related to the operation of the processor TN110 . Each of the memory TN130 and the storage device TN140 may be configured as at least one of a volatile storage medium and a non-volatile storage medium. For example, the memory TN130 may include at least one of a read only memory (ROM) and a random access memory (RAM).

The transceiver TN120 may transmit or receive a wired signal or a wireless signal. The transceiver TN120 may be connected to a network to perform communication.

On the other hand, the embodiment of the present invention is not implemented only through the apparatus and/or method described so far, and a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium in which the program is recorded may be implemented. And, such an implementation can be easily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiment of the present invention has been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims are also presented. It belongs to the scope of the invention.

110...First Acquisition Unit 120...Second Acquisition Unit
130...First modeling unit 140...Second modeling unit

Claims (10)

A first obtaining unit for obtaining GIS (Geographic Information System) information of the object;
a second acquisition unit for acquiring a photographic image of the object;
a first modeling unit generating a basic shape of the object excluding the roof of the object in a virtual three-dimensional space using the GIS information;
A second modeling unit for generating the actual appearance of the object by using the photographic image of the object and the basic appearance;
The second modeling unit generates a roof model of the object in accordance with the photographic image, and attaches the roof model to the upper surface of the basic outline,

The second modeling unit deforms the basic shape in such a way as to form a groove or a protrusion on the outer surface of the basic shape in accordance with the photographic image,
When the roof model and the texture model are attached to the deformed basic shape, the second modeling unit uses a virtual hexahedron circumscribed to the basic shape, the roof model, and the texture model in the three-dimensional space to the basic shape, grouping the roof model and the texture model into one group,
The virtual hexahedron is displayed in the three-dimensional space as a second real shape in which the texture model is attached to the outer surface of the first real shape in which the roof model is attached to the upper surface of the basic shape in which the grooves and the protrusions are formed,
The basic shape, the roof model, and the texture model are computationally processed as one virtual cube in the three-dimensional space.
According to claim 1,
The three-dimensional space has a coordinate axis matching the coordinate information of the GIS,
A digital twin model including the object is formed in the three-dimensional space through the coordinate axis,
The first modeling unit generates the basic appearance in the digital twin model,
The second modeling unit generates the actual external shape in the digital twin model, and a modeling device for replacing the basic external shape with the actual external shape.
According to claim 1,
The first obtaining unit obtains the ID of the object,
The first modeling unit grasps the type of the object using the ID of the object, generates the basic appearance of the object using a representative diagram representing the type of the object, and enlarges or reduces the basic appearance according to the scale and then placed in the three-dimensional space,
The object is a modeling device including a building.
delete delete delete According to claim 1,
The second modeling unit analyzes the shape of the roof of the object using the photographic image,
The second modeling unit extracts a roof model matching the analysis result of the roof shape from a database in which a plurality of roof models are stored,
The second modeling unit is a modeling device that attaches the roof model extracted from the database to the upper portion of the basic shape.
According to claim 1,
The first modeling unit arranges the topography of the region of interest in the three-dimensional space by using the GIS information,
The first modeling unit displays the topography by assigning a height according to the GIS information, and arranges a basic shape of the object on the topography.
In the modeling method performed by the modeling device,
obtaining GIS (Geographic Information System) information of the building;
generating a primary model of the building excluding the roof in a virtual three-dimensional space using the GIS information;
modeling at least one of a road, a facility, and a topography excluding the building on the three-dimensional space using a numerical topographic map;
obtaining a photographic image of the building;
Including; modeling the roof of the building matching the photographic image to the location of the roof of the primary model;

When the first model is displayed as a basic appearance,
Deforming the basic outline in such a way as to form a groove or a protrusion on the outer surface of the basic outline in accordance with the photographic image,
When the model of the roof and the texture model are attached to the deformed basic exterior, the basic exterior and the roof of the roof are used using a virtual cube circumscribed to the basic exterior, the model of the roof, and the texture model in the three-dimensional space. grouping the model, the texture model into one group,
The virtual hexahedron is displayed as a second real shape in which the texture model is attached to the outer surface of the first real shape in which the model of the roof is attached to the upper surface of the basic shape in which the grooves and the protrusions are formed in the three-dimensional space,
The basic shape, the model of the roof, and the texture model are computationally processed as one virtual cube in the three-dimensional space.
10. The method of claim 9,
The three-dimensional space has a coordinate axis matching the coordinate information of the GIS,
A modeling method in which a digital twin model including the building is formed in the three-dimensional space through the coordinate axis.

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