KR101425576B1 - Method for acquiring and processing a three-dimensional data to product a precise wide-area scale model - Google Patents

Abstract

The present invention relates to a variety of three-dimensional data acquisition and processing methods for producing a wide-area scale model. The present invention relates to a method for acquiring and processing three-dimensional data required for a wide area scale model in various ways, A type selection step (S10) of classifying the type according to the structure; A scale selection step (S20) for selecting the size of the modeling; And a machining step S30 for collecting and processing the three-dimensional data, wherein the machining step S30 includes a CAD drawing extraction and drawing step S30-1 through edge extraction of the three-dimensional scanning data, A vector line extraction and drawing step S30-2 through actual photographic image shooting, a vector line extraction and drawing step S30-3 through a Google map and a map service image, and a data acquisition and processing step (S30-4). The present invention provides various 3D data acquisition and processing methods for producing an accurate global scale model.

Description

Technical Field [0001] The present invention relates to a three-dimensional data acquisition and processing method for producing a precise wide-

The present invention relates to a three-dimensional data acquisition and processing method for producing an accurate wide area scale model, more specifically, to acquire and post-process three-dimensional data required for a wide area scale model production in various ways, Dimensional data acquisition and processing method for producing a precise wide area scale model.

As the most basic work in producing a wide scale scale model for exhibition, the demand of 3D data information in addition to the CAD drawing data of the building is increasing, and photogrammetry plays a role as the conventional method.

Until the past, the modeling or drawing work required for the modeling depends on the scale factor and the degree of expression. For expressions requiring detail, photographic surveying was carried out by skilled design experts and computer CG designers.

In the case of general large scale satellite and wide area model construction, generalization of building type was acquired and CAD drawing was obtained. Roof shape of building was referenced from satellite photograph and made in block form.

In the case of simple building modeling, it is desirable to use existing drawings or simple modeling tools.

The generalized block form without accurate numerical and geometric information data is difficult to expect the naturalness or quality of the original building form.

It takes considerable time and effort to model buildings and structures and make them into CAD drawings in order to increase competitiveness.

In other words, existing wide area modeling technology does not have accurate numerical information data, so it maintains the roof shape based on the image of aerial photograph, cuts the block into acrylic material through CAD drawing, Could be maintained, but there is a limit to the exact proportions and details that can be expressed

Also, in case of major buildings and landmark buildings that need to be built to help understand, there is a problem that a lot of time must be invested in drawing production time, model assembly and production for a detailed model.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the problems described above and to provide a method and apparatus for determining a process of combining data acquisition methods including a 3D rider (3D scanning) Dimensional data acquisition and processing method for producing a precise wide area scale model with high productivity.

The object of the present invention is also to provide a method and system for acquiring and processing three-dimensional data for producing a precise wide area scale model capable of constructing three-dimensional data of numerical and shape information about an actual building, Method.

It is another object of the present invention to provide a three-dimensional data acquisition and processing method for producing a precise wide area scale model that can be used for modeling three-dimensional data collected in various ways.

According to another aspect of the present invention, there is provided a method for manufacturing a wide area scale model for display, comprising: a type selecting step of classifying types according to a building type and a structure; A scale selection step for selecting the size of the modeling; And a processing step of collecting and processing the three-dimensional data, wherein the processing step includes a CAD drawing extraction and drawing step by edge extraction of the three-dimensional scanning data, a vector line extraction through actual photographic image shooting, A drawing step, a vector line extraction and drawing step through a Google map and a map service image, and a data acquisition and processing step for a terrain base production. Dimensional data acquisition and processing method.

According to the present invention, there is further provided a post-processing step of post-processing so as to be optimized by one software when the processing step is composed of two or more steps.

According to the present invention, the post-processing step selects Revit software capable of selecting points of the scan data and extracting vector lines, modifying overlapping surfaces and edges using sketch-up as an integrated modeling tool, And to perform the twist phenomenon and the optimization for the loss portion.

Further, according to the present invention, the type selection step is characterized by selecting a landmark, an important building type, or a general building type.

Further, according to the present invention, the landmark and the important building type include any one of a large building type, an irregular building type, and a preserved building type.

In addition, according to the present invention, the general building type includes any one of an office building type, a residential building type, and a single type residential type.

According to the present invention, the scale selecting step may include a scale (a) when the entire quality is expressed in detail, a scale (b) when the partial quality is expressed in detail, and a scale and c).

According to the present invention, the scale ratio of (a) is 1: 500, the scale ratio of (b) is 1: 1000, and the scale ratio of (c) is 1: 3000 to 5000.

In addition, according to the present invention, the data acquisition method according to the type selection step can be applied to a 3D LiDAR survey (3D laser scanning), a mobile LiDAR survey (MMS) application, a 3D frame extraction modeler application using photographs, A modeler application, and a 3D modeling application using a satellite image, an aerial image, and a road view.

According to the three-dimensional data acquisition and processing method for producing a precise wide area scale model of the present invention, a process combining data acquisition methods of various methods including a three-dimensional rider (three-dimensional scanning) is established, Accordingly, it is possible to produce a more accurate global scale model by having appropriate efficiency and productivity.

In addition, the numerical and geometric information about the actual building is converted into three-dimensional data, which is used as a necessary source for the model construction and can be applied to the machining model immediately, thereby enhancing precision.

In addition, it is possible to produce a wide scale scale model in which all the advantages of all models are integrated into one, by processing the three-dimensional data collected in various methods into one data and utilizing it for model making.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart of a three-dimensional data acquisition and processing method for producing an accurate wide area scale model according to an embodiment of the present invention;
FIG. 2 is a view showing a kind of a three-dimensional data collecting method according to an embodiment of the present invention;
FIG. 3 is a view showing classification according to an embodiment of the present invention,
4 is a diagram illustrating a data collection application portion according to an embodiment of the present invention,
5 to 7 are diagrams showing application ranges of a data acquisition method according to scale of model making according to an embodiment of the present invention,
8 to 14 are diagrams illustrating a CAD drawing extraction and drawing method by edge extraction of 3D scanning data according to an embodiment of the present invention,
15 is a diagram illustrating a vector line extraction and drawing method by photographing an actual photographic image according to an embodiment of the present invention;
16 to 18 are diagrams illustrating a vector line extraction and drawing method using an image of a Google Map and a map service according to an embodiment of the present invention;
19 is a diagram illustrating a data acquisition and processing method for producing a terrain base according to an embodiment of the present invention;
20 is a diagram illustrating an integrated modeling method according to an embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a three-dimensional data acquisition and processing method for producing a precise WGM model of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a flowchart of a three-dimensional data acquisition and processing method for producing a precise WGM model according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating a kind of a three-dimensional data collecting method according to an embodiment of the present invention.

Referring to FIG. 1, a method for producing a wide area scale model for display includes a type selection step S10 for classifying types according to a building type and a structure, a scale selection step S20 A processing step S30 for collecting and processing three-dimensional data, and a post-processing step S40 for post-processing so as to be optimized in one software.

The processing step S30 includes a CAD drawing extraction and drawing step S30-1 through edge extraction of the three-dimensional scanning data, a vector line extraction and drawing step S30-2 through actual photographic image shooting, A vector line extraction and drawing step S30-3 through the Google map and map service image, and a data acquisition and processing step S30-4 for the terrain base production.

FIG. 3 is a diagram illustrating classification according to an embodiment of the present invention, and FIG. 4 is a diagram illustrating a data collection application portion according to a type according to an embodiment of the present invention.

As shown in FIG. 3, the type selection step S10 may be classified into a landmark, an important building type, or a general building type. The landmark and the important building type include a large building type (A Type) Type building type (C type), and the general building type includes an office building type (D type), a residential building type (E type), and a single type residential type (F type) .

And, as shown in FIG. 4, the applicable technology range for data acquisition may vary depending on the type.

The data acquisition method is applied to 3D LiDAR survey (①), mobile LiDAR survey (②), 3D frame extraction model using photo (③), sketch up and Google satellite photo 3D modeler application (④), and 3D modeling application method (⑤) using satellite images, aerial images and road view.

The above A Type and B Type are ①, C Type is ① ②, D Type is ①②③④, E Type and F Type can be applied to ①②③④⑤.

The scale selection step S20 includes a scale a when detailing the entire quality, a scale b when the detail quality is expressed in detail, and a scale c when the quality is not rendered in detail. The scale ratio in (a) is 1: 500, the scale ratio in (b) is 1: 1000, and the scale ratio in (c) is 1: 3000 to 5000.

5 to 7 are diagrams showing a range of application of the data acquisition method according to the model production scale according to the embodiment of the present invention.

As shown in Fig. 5, when the scale ratio is 1: 500, A Type and B Type are ①, C Type is ① ②, D Type is ①②③④, E Type is ②③③⑤, and F Type is ③④⑤.

As shown in FIG. 6, when the scale ratio is 1: 1000, B type is 1, C type is ①②③, D type is ④⑤, E type is ③④⑤, and F type is ⑤.

As shown in FIG. 7, when the scale ratio is 1: 3000 to 5000, the data acquisition methods of A Type and B Type are applied to ③, C Type and D Type are ④, and E Type and F Type are data acquisition method.

FIGS. 8 to 14 are views showing a CAD drawing extraction and drawing method by edge extraction of 3-D scanning data according to an embodiment of the present invention.

As shown in Figs. 8 to 14, a precision model is constructed using a broadband scanner device (Leica C10) for obtaining necessary drawings and three-dimensional data, and a point vector line for the appearance type is extracted from the scanned data Finally, the modeling software (Revit, Cyclone, etc.) is used to perform the modeling through the program.

The outline vector extraction of the scan points of the building is performed using the software based on the linear modeling, and the outline model of the building is created through the process of forming the height, shape and size of the building, and the like through the shaping process.

As shown in FIG. 10, in the case of three-dimensional scan data, information is received in a point cloud and is modeled in a polygon or mesh structure to produce completed data.

As shown in FIGS. 11 to 13, when the 3D scan data is modeled as a polygon or a mesh structure as it is, it is possible to acquire the data as it is about the shape, such as cultural property. However, The solid modeling method of the vector line is modeled.

As shown in FIG. 14, the 3D scanning uses broadband scanning, acquires raw data to be able to distinguish shapes rather than precision data acquisition, acquires a texture mapping source to create modeling data, Photograph) of the present invention.

In addition, it acquires the shape data of the front seen through the 3D scanning, creates the detailed image of the building using the photographed image about the detailed aspect, the roof, and the detailed form, and requires accurate data. However, In order to solve the difficult and time-consuming parts, it is necessary to acquire the data on the ratio and the shape by scanning a part of the building or several buildings once, and the remaining part is to construct the shape based on the photographed 2D image.

FIG. 15 is a diagram illustrating a vector line extraction and drawing method by photographing an actual photographic image according to an embodiment of the present invention.

As shown in FIG. 15, three-dimensional spatial information is constructed according to various angles of a 2D photograph by a passive non-stereoscopic 3D data modeling method by photographing a method of acquiring shape information of an actual building object in a short time, 3D data is constructed by dimensional vectorization.

Photographing can be done with a general digital camera, and when a texture map is needed, high-resolution shooting and regular shooting are performed.

The vector extraction software uses a Photo modeler or 3D builder and it is recommended that you use the latest sketchup plugin data.

16 to 18 are diagrams illustrating a vector line extraction and drawing method using an image of a Google Map and a map service according to an embodiment of the present invention.

As shown in FIG. 16, a 3D frame is created by using a Google map and a sketch-up to form a vector frame for a shape together with a terrain base, and raising a vector frame of a drawn roof shape in proportion.

The results produced by the above method are shown in Fig. 17, and can be used for making a large scale model or a model including a texture, rather than maintaining a precise shape.

In the case of 3D data modeling using photographs, the method using the photograph is the same as the existing process, but the 3D data is created instead of the CAD drawing data as shown in FIG. 18, and the software uses the REVIT and the sketch up .

19 is a diagram illustrating a data acquisition and processing method for producing a terrain base according to an embodiment of the present invention.

The acquisition of the topographical data necessary for the existing model production was made by CAD work by manual work level reference with reference to aerial photographs and satellite photographs, and it was made by cutting foam & panel of 0.5T ~ 2T size.

However, in the present invention, as shown in FIG. 19, the 3D data is created using the created terrain or level, and the base work of the road and the building location is performed so that it can be fitted to each building model. The created data can be easily used for 3D printing and NC cutting To be used after post-treatment.

20 is a diagram illustrating an integrated modeling method according to an embodiment of the present invention.

As shown in FIG. 20, a plurality of various methods other than building one by applying a method at the time of building a building model are combined or combined.

In other words, 3D modeling technology including MMS is applied, photo model and scanning technology are applied, and integrated modeling is enabled using Google Earth 3D data, search portal aerial photographs and road view.

That is, in the processing step (S30), if it is composed of two or more steps among the steps (S30-1) to (S30-4), post-processing is performed so as to be optimized by one software.

In the post-processing step, Revit software capable of selecting points of a scan data and extracting a vector line is selected, and the overlapped face and edge portions are modified by using an integrated modeling tool as a sketch up, It is preferable to perform the optimization for "

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.

Claims (9)

delete delete delete delete delete delete As a method for producing a global scale model for exhibition,
A type selection step (S10) of classifying types according to the building type and structure;
A scale selection step (S20) of selecting a size of the model making; And
(S30) for collecting and processing three-dimensional data,
The processing step S30 includes a CAD drawing extraction and drawing step S30-1 through edge extraction of the three-dimensional scanning data, a vector line extraction and drawing step S30-2 through actual photographic image shooting, A vector line extraction and drawing step S30-3 through a Google map and a map service image, and a data acquisition and processing step S30-4 for a terrain base production,
The scale selection step S20 includes a scale a when detailing the entire quality, a scale b when detailing some of the quality, and a scale c when the quality is not rendered in detail. Dimensional data acquisition and processing method for producing a precise wide area scale model.
8. The method of claim 7,
Wherein the scale ratio of (a) is 1: 500, the scale ratio of (b) is 1: 1000, and the scale ratio of (c) is 1: 3000 to 5000. [ Acquisition and processing methods.
8. The method of claim 7,
The data acquisition method according to the type selection step S 10 may be performed by using a ground LiDAR survey (3D laser scanning), a mobile LiDAR survey (MMS) application, a 3D frame extraction modeler application using photographs, a sketch up and a Google satellite photo 3D modeler application Satellite image, aerial image, and 3D modeling application using a road view. The 3D data acquisition and processing method for precise wide area scale model production.

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