KR20190055010A - Method and apparatus for displaying information of room space hierarchically in building - Google Patents

Abstract

According to an embodiment of the present invention, a hierarchical display device for indoor space information of a building comprises: a data receiving unit for receiving data on a building; an internal object extracting unit for extracting an object inside the building from the data; an external object extracting unit for extracting an object outside the building from the data; an LOD generating unit for generating LOD data for each stage from the objects inside and outside the building; a storage unit for storing the extracted and generated data; and a control unit for determining an LOD stage in response to an input signal of a user and rendering the data on the determined LOD stage to provide the same for the user. The control unit increases the LOD stage for a clicked object when the rendered object is clicked and reduces the LOD stage when an object other than the rendered object is clicked.

Description

TECHNICAL FIELD [0001] The present invention relates to a hierarchical display method and a display device for indoor space information of a building,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for displaying indoor space information of a building, and more particularly, to a display method and an apparatus for displaying indoor space information hierarchically and transmitting indoor space information to a user in detail.

BIM (Building Information Modeling) refers to the process of modeling a facility in a multi-dimensional virtual space such as planning, design, engineering (structure, facility, electricity, etc.), construction, further maintenance and disposal. In particular, it enables the design and construction of low-cost buildings with cutting-edge design and environment-friendly energy, which is a recent issue, and is a similar concept to the multi-dimensional virtual design construction (VDC). In recent years, the application of BIM has been widely used in civil and plant fields in Europe and the US because it covers all construction environments as well as construction environments.

The building of the BIM (Building Information Modeling) means the entire life cycle of the target building - design, construction, operation and management, and the information means all information included in the entire life cycle of the target building , Modeling refers to an integrated tool and platform that produces, manages, and publishes all information contained in the entire life cycle.

BIM can digitize buildings to produce numerical data, and can display 3D display effects. Data of a length connecting a start point and an end point of a line other than a simple line and a surface operation is generated and the area is data based on the closed surface. By combining the data of length and area, volume data can be obtained.

BIM expresses each property of building objects such as walls, slabs, windows, doors, roofs, stairs, etc., and recognizes each other's relations and immediately reflects the building elements to the building design. Regardless of whether the building to be designed is regular or unstructured, the data generated when building the building is integrated and managed at all levels through compatibility and sharing of each project and each process.

A geographic information system (GIS) is a computer system that collects and makes available the hardware, software, and geographic data of a computer that is designed to collect, store, update, coordinate, analyze and represent all types of geographically referential information .

GIS is a system for storing, extracting, managing, and managing information by linking geographical information that represents a spatial location for various earth surface information references and non-graphic attribute information that explains and complements its form and function with graphical and database management functions. It is an information system related technology to analyze, and it is a comprehensive analysis means that expresses the spatial relation of map by adding characteristic (attribute) information of the geographical information. Geographic data occupying spatial position and related attribute data are integrated and processed. GIS can be widely used in land information management, facility management, transportation, urban planning and management, environment, weather forecasting, agriculture, disaster and disaster, education and population prediction.

From the point of view of the purpose of use, GIS can be divided into Facility Management (FM) system and decision support system for planning support, Land Information System (LIS) (UIS: urban information system).

Recently, an integrated data model that integrates BIM (IFC) data in the construction field and GIS data in the field of spatial information is required for combining and interoperating BIM and GIS, and such studies are underway.

As the demand of 3D building model worldwide increases and the utilization field using 3D building model becomes various, the importance of platform that can serve spatial information of urban model unit by using 3D building model and terrain information Has been highlighted. In addition, since the urban model is composed of numerous buildings, a quick and efficient visualization method of the three-dimensional model is becoming an important factor. Particularly, when screen display is performed on a large-capacity three-dimensional object using a device having limited performance such as a mobile device, smooth operation due to limitation of rendering performance is impossible. In order to solve such a problem, it is essential that a technique for reducing data through a detailed step (LOD) model construction for a three-dimensional real-world model is essential.

Levels of Detail (LOD) are the level of detail in modeling information, which is one of the things that must be negotiated when performing BIM. If the configuration of the LOD model is not clear, it can be confusing to model construction information among stakeholders.

The basic idea of the detail step (LOD) is to use a more compact representation if an object is small or does not contribute to the rendered image. For example, a detailed three-dimensional object model of approximately 10,000 triangles is used when the observer is close to the object. If an observer moves away from an object, simply using a simplified model of about 100 triangles can be seen to be nearly identical to the original model because of the distance. With this method, a considerable speed increase can be expected due to the light weight of the data.

Korean Unexamined Patent Application Publication No. 2008-0029407 (Apr. 03, 2008)

It is an object of the present invention to provide a method and system for visualizing a variety of information in a building interior and exterior through a stepwise visualization method such as outdoor, indoor, floor, space, And a display device.

Another object of the present invention is to provide an interface capable of searching, selecting, and providing information of various facilities, vegetation, and buildings existing outside a building, a method of linking outdoor and indoor at the same time, A spatial information, a panoramic image, object information in an image, and finally, a hierarchical display method and a display device capable of providing detailed object information.

Other objects of the present invention will become more apparent from the following detailed description and the accompanying drawings.

According to an embodiment of the present invention, a hierarchical display apparatus for indoor spatial information of a building includes: a data receiving unit for receiving data on a building; An internal object extracting unit for extracting a building internal object from the data; An enclosure object extracting unit for extracting a building exterior object from the data; An LOD generation unit for generating stepwise LOD data from the building external object and the building internal object; A storage unit for storing the extracted and generated data; And a controller for determining the LOD level according to the input signal of the user, rendering the data related to the determined LOD level and providing the data to the user, wherein the controller increases the LOD level for the clicked object when the rendered object is clicked And decreases an LOD step when an object other than the rendered object is clicked.

The controller may render data for the external object in the LOD 0 stage.

The controller may render data on the building internal object from the LOD N level and render data on the building internal object for each floor.

In the LOD N + 1 step, the controller may render the objects rendered for each layer so as to be spaced apart from the height of each layer.

In the LOD N + 2 step, the controller may provide a rendering area for rendering data for the clicked layer and an image area for displaying one or more representative images for the respective spaces in the clicked layer as one screen have.

In step LOD N + 3, the controller may provide a description area on the rendering area to display a detailed description of the clicked space.

The controller may increase the LOD level for the clicked object when the representative image is clicked, and may provide a description area on the rendering area to display a detailed description of the clicked space in the LOD N + 3 step.

The control unit provides a rendering area for rendering data for the clicked space and an image area for displaying at least one representative image of the clicked space on one screen in the LOD N + 4 step, May be provided on the rendering area.

If the guide image is clicked, the controller increases the LOD step for the clicked object, provides a spatial image of the guide image clicked in the step LOD N + 5, and provides the guide image on the spatial image .

When the guide image provided on the spatial image is clicked, the controller increases the LOD step for the clicked guide image and provides an explanation image of the guide image clicked in step LOD N + 6.

According to an embodiment of the present invention, a hierarchical display method for indoor spatial information of a building includes: inputting data on a building; Extracting an object inside the building and an object outside the building from the data; Generating stepwise LOD data from an object inside the building; Storing the extracted and generated data; Determining an LOD step according to a user's input signal, rendering the data related to the determined LOD step and providing the rendered data to the user, wherein the controller increases the LOD step for the clicked object when the rendered object is clicked And decreases an LOD step when an object other than the rendered object is clicked.

According to one embodiment of the present invention, anyone can access and interpret information through a step-by-step visualization method such as outdoor, indoor, floor, space, This can be a convenient method.

1 is a block diagram schematically illustrating a hierarchical display system according to an embodiment of the present invention.
2 is a block diagram schematically showing the hierarchical display device shown in FIG.
3 is a flowchart illustrating a hierarchical display process according to an embodiment of the present invention.
Figs. 4 to 23 are screens showing the display state according to Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. The embodiments are provided to explain the present invention to a person having ordinary skill in the art to which the present invention belongs. Accordingly, the shape of each element shown in the drawings may be exaggerated to emphasize a clearer description.

The traditional 3D architectural visualization method is a display method from the architectural point of view such as section, plan, elevation, bird's-eye view on a map or floor. The present invention proposes a display method that combines a conventional architectural visualization method with an information design model for information search.

The information design model for information search uses the following three methods.

- Physical design: A design that supports user's information search.

- Cognitive design: Information design for user's understanding.

- Emotional design: Information design that can be easily and easily provided to users.

By introducing the information design model for the information search in the building, a visualization model that can easily recognize the information, an easily recognizable visualization model, and a method of providing information feedback through the intuitive response of the user are presented.

1 is a block diagram schematically illustrating a hierarchical display system according to an embodiment of the present invention. As shown in FIG. 1, the hierarchical display system includes a hierarchical display device 100 for visualizing large-capacity BIM data on a three-dimensional GIS platform, various 3D objects based on BIM (e.g., buildings, bridges, And a BIM server 200 for storing IFC data (BIM data) of stored objects (e.g., buildings, bridges, urban facilities, etc.) on the hierarchical display device 100 side.

The hierarchical display apparatus 100 effectively stores the structured BIM data by storing the BIM data in a service data structure capable of performing a fast rendering process.

2 is a block diagram schematically showing the hierarchical display device shown in FIG. 2, the hierarchical display apparatus 100 according to the present invention includes a data receiving unit 10, a control unit 40, a building interior object extracting unit 50, a sheath object extracting unit 60, (70), and a storage unit (80).

The data receiving unit 10 receives the objects (e.g., buildings, bridges, and the like) from the BIM server 200 in order to display BIM-based three-dimensional objects , City facilities, and the like) IFC data (BIM data).

The in-building object extraction unit 50 extracts each object in the building from the received BIM data. The enclosure object extracting unit 60 extracts the building exterior object from the received BIM data.

The LOD generation unit 70 reduces the input BIM data and generates LOD data for each step. The LOD data is composed of LOD 0 stages to LOD N stages (N = 1,2,3, ..., n, integer). As will be described later, LOD 0 is data on an object outside the building, And data for an object inside the building. The storage unit 80 stores the generated LOD data.

The control unit 40 is interlocked with each component (for example, the data receiving unit 10, the building inner object extracting unit 50, the enclosure object extracting unit 60, the LOD generating unit 70, and the storage unit 80) , And controls the operation of the hierarchical display apparatus 100. A specific operation will be described later.

FIG. 3 is a flowchart illustrating a hierarchical display process according to an embodiment of the present invention, and FIGS. 4 to 23 are views showing a display state according to FIG. Hereinafter, a specific operation will be described with reference to FIGS. 3 to 23. FIG.

As described above, the LOD generation unit 70 generates LOD data for each step, and the generated LOD data is stored in the storage unit 80. [ The control unit 40 determines the LOD level according to the input signal of the user, and visually (e.g., renders) the stored data according to the determined LOD level and provides the data to the user. Can be provided.

First, the control unit 40 is driven to the LOD 0 stage at the time when the initial device is driven, and the LOD 0 stage renders data for the exterior objects of the building. An out-of-building object can be an image of a building exterior object visible at a particular view point (Fig. 4).

The user can click an object outside the building using a mouse pointer (using a mouse) or a finger (using a touch screen), and the object outside the clicked object changes to another color (FIG. 5) The LOD level for the object is increased to LOD level 1.

As shown in FIG. 6, the control unit 40 renders data on an object in the building from the LOD 1 stage. The controller 40 can render data on objects in the building for each floor and provide the data to the user. Figure 7 is another embodiment for the LOD 1 stage.

Again, the user can click an object inside the building using a mouse pointer (using a mouse) or a finger (using a touch screen), and the LOD level for the object in the clicked building increases to the LOD level 2. On the contrary, when the user clicks on a space other than the inside of the building, the LOD step is reduced to the LOD 0 level, and the controller 40 can render the data for the object outside the building again and provide it to the user.

The controller 40 may render the objects rendered for each floor in the LOD 2 step so as to be spaced apart from the height of each floor and render the developed objects to the user. As shown in FIG. 8, when the rendered objects are widely spaced apart from each other, the user can easily confirm the rendering of each floor (in FIG. 7, the upper layer rendering obscures the lower layer rendering, Difficult to confirm).

Again, the user can click on a layer using a mouse pointer (using a mouse) or a finger (using a touch screen), and the clicked layer changes to another color (Figs. 9, 11, 13) LOD level for one layer increases to LOD level 3. The control unit 40 may render the data of the layer clicked in the LOD 3 step and provide it to the user (FIGS. 10, 12 and 14).

On the other hand, as shown in Fig. 14, the control unit 40 displays a rendering area for rendering data on the clicked layer and at least one representative image for each space included in the clicked layer It is possible to provide the user with a single image area. On the other hand, Fig. 10 and Fig. 12 only provide the rendering area and not the image area.

Again, the user can click on one space using a mouse pointer (using a mouse) or a finger (using a touch screen), and the clicked space changes to a different color (Figs. 15-17) LOD level for space increases to LOD level 4. The control unit 40 may provide a description area for displaying a detailed description of the space clicked in the LOD 4 step on the displayed rendering area.

On the other hand, the user can click one of the representative images using a mouse pointer (when using a mouse) or a finger (when using a touch screen), and the LOD level for the space corresponding to the representative image is increased to LOD level 4 The control unit 40 may provide a description area for displaying a detailed description of the space clicked in the LOD 4 step on the displayed rendering area.

Again, the user can click on the description area using a mouse pointer (using a mouse) or a finger (using a touch screen), and the LOD step for the space corresponding to the description area is increased to LOD 5 step. The controller 40 may render the space clicked in the LOD 5 step in an enlarged state, and may provide one or more guide images according to the position of the space on the rendering area (FIG. 18).

Again, the user can click one of the guide images using a mouse pointer (using a mouse) or a finger (using a touch screen), and the LOD level for the space corresponding to the guide image is increased to LOD level 6 do. The control unit 40 renders a space corresponding to the guide image in the LOD 6 step and provides the space as a space image. The guide image, which is the same as the guide image displayed in the LOD 5 step on the spatial image, (Figs. 19 to 22).

Again, the user can click one of the guide images using a mouse pointer (when using the mouse) or a finger (when using the touch screen), and the LOD step for the part corresponding to the guide image is increased to LOD level 7 do. The control unit 40 may provide a detailed description corresponding to the guide image in step 7 of the LOD (FIG. 23).

Although the present invention has been described in detail by way of preferred embodiments thereof, other forms of embodiment are possible. Therefore, the technical idea and scope of the claims set forth below are not limited to the preferred embodiments.

Claims (8)

A data receiving unit for receiving data on a building;
An internal object extracting unit for extracting a building internal object from the data;
An enclosure object extracting unit for extracting a building exterior object from the data;
An LOD generation unit for generating LOD data step by step from the building external object and the building internal object;
A storage unit for storing the extracted and generated data; And
Determining a LOD step according to a user's input signal, rendering the data related to the determined LOD step, and providing the data to a user,
Wherein the controller increases the LOD level for the clicked object when the rendered object is clicked and decreases the LOD level when an object other than the rendered object is clicked. The method according to claim 1,
In the LOD 0 step, the control unit renders data on the exterior object of the building,
(N = 1, 2, 3,...) Related to the indoor spatial information of the building, which renders data on the building interior objects from the LOD N level and renders data on the building interior objects for each floor. ..n, integer). 3. The method of claim 2,
In the LOD N + 1 step, the controller renders the objects rendered for each layer so as to be spaced apart from the height of each layer,
In the LOD N + 2 step, a rendering area for rendering data for the clicked layer and an image area for displaying at least one representative image for each space provided in the clicked layer, A hierarchical display device for spatial information. The method of claim 3,
The control unit increases the LOD level for the clicked object when the representative image is clicked, and provides an explanation area for displaying a detailed description of the clicked space in the LOD N + 3 step on the rendering area, A hierarchical display device for spatial information. 5. The method of claim 4,
The control unit provides a rendering area for rendering data for the clicked space and an image area for displaying at least one representative image of the clicked space on one screen in the LOD N + 4 step,
And provides at least one guide image on the rendering area according to the position with respect to the clicked space on the rendering area. 6. The method of claim 5,
If the guide image is clicked, the controller increases the LOD step for the clicked object and provides a spatial image for the guide image clicked in step LOD N + 5,
And provides a guide image on the spatial image. 10. The method of claim 9,
The control unit increases the LOD level for the guide image that is clicked when the guide image provided on the space image is clicked, and provides an explanation image of the guide image clicked in the step LOD N + 6, Lt; / RTI > Receiving data on a building;
Extracting an object inside the building and an object outside the building from the data;
Generating stepwise LOD data from the building external object and the building internal object;
Storing the extracted and generated data; And
Determining an LOD step according to a user's input signal, rendering the data regarding the determined LOD step and providing the data to a user,
Wherein the controller increases the LOD step for the clicked object when the rendered object is clicked and decreases the LOD step when an object other than the rendered object is clicked.

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